I've Never Seen ANYTHING Like This | Combi Boiler Install
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- Опубліковано 7 лют 2025
- I've Never Seen ANYTHING Like This | Combi Boiler Install
Are you a homeowner in the market for a new combi boiler? This might be the coolest Combi Boiler install I've seen in a residential house. With the help of Mathew Nolan from Nolan Energy, we walk and talk you through why this Rinnai Combi Boiler system is perfect for this home, as well as the various components and strategies involved in getting it up and running. Whether you're an experienced plumber or new to the game, you won't be disappointed at what these guys are able to piece together using products from industry leaders such as Rinnai.
Thank you to Rinnai for sponsoring this video! Because of them we can do amazing things and make fun videos like this, showcasing the great work plumbers around the country are doing every day.
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Thanks for watching! I'm Roger Wakefield, The Expert Plumber, and welcome to my channel. On this channel, it's ALL about plumbing. We play games, we experiment, and we have FUN here, talking and learning about all things plumbing!
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Some pieces of art are just to look at. That wall of copper pipes is a work of art, and it's functional as well!
Looks like a lot of space taken up.
@@FrustratedBaboonIt's a large building.
Once you’ve had in floor hydronic heat you will never go back to forced air, it’s awesome
Well You can always tell the quality of the craftsman by their pride in their work. And This something that any craftsman would be proud of.
Mona Lisa eat your heart out.
To William Bennett Wild, Let's hope the "Mona" homeowner doesn't moan when there is *only one super-stary* social media contractor --
But the one desperately needed-who is not as good-or when scary costs take her for a ride.
Hey Roger..my name is Gladys wambui from Kenya am a student plumber taking my courses in plumbing and pipe fitting.
I really learnt from your channel and you encourage me to keep going.
Baithaway i enjoy and also learnt something on the Best starting Trade tools video.....hoping and wishing that one day i will be gifted such kind of working tools
Gladys..thank you so much for this comment, it’s amazing the people I reach all around the world, it blows my mind. Keep learning and don’t stop trying to be the best 💪🏻 good luck to you on your journey
I'm learning and new into the field as well, much love you man and dont give up!
Radiant heat is the best
We had it at a house in Turkey it didn’t dry the air and was very comfortable
Roger's energy is the best.
That guy Matt needs a red bull 😂
No kidding.
I just subscribed to your channel. After fixing my leaking toilet, from your video. And it was easy-squeeze. They say your only as good as your teacher. Thank you teacher.😊👍
Don't know why mine, is posting twice.
Glad it helped!
I've got a Rinnai doing hot water and hydro air heat. It works incredibly well.
What part of the country are you in?
@@RogerWakefield New England, in an apartment complex. One too many of the 50 gallon tanks (65k BTU direct vent, also did heat & hot water) ruptured, so the insurance said they had to convert to tankless or get dropped.
It's funny you mentioning about Texas having freezing problems. I'm watching this after my all the PVC pipes in corpus busted like a year or so ago. It sucked. I had no water or power for like 3 months.
What temperature does the boiler fluid need to be to supply hot air?
What temp does water need to be to supply DHW?
95% efficiency is only at condensing temps. Right? Do you need to be above condensing temps to make DHW and forced air?
I’m installing a similar system right now but plan to add a heat pump water heater for summer hot water and the ability to have a DHW storage tank too. Also, too many zones and microzones can lead to short cycling. So a buffer tank might be required for greater efficiency.
You are right, installed like this and antifreeze on top of it, this system will get nowhere near 95%. In fact, there is no real advantage over a cheaper simpler non condensing boiler for this install.
Good quality craftsmanship!
Really
My viessman vitoden install when i bought the house looks like this. Just on a much smaller scale. I absolutely love it. Small footprint, efficient, on my gas bill anyway, install wasn't cheap. The on demand hot water i really appreciate. Does it take slightly longer to heat up? Sure. But a small price to pay for the efficiency.
Does yours incorporate the solar water panels, or is it just direct gas?
@k.we2279 direct gas. I live in a western facing house in canada. It didnt make sense to spring for the solar. Also, since i had to replace the old 1958 oil boiler for insurance purposes, i should have moved it to the opposite side of the basement, you know. In line with all the taps in the house, that would have just made sense. But buying a house, working out all the details of that, it didnt occur to me. So part of the delay is the distance it has to travel to get to the taps plays into that. I forgot to mention that.
In the early 1990's I needed to get out of electric and install a used Burnham boiler with radiators. Well the quoted install back then was 2600 give or take for the few estimates. Well I went to the local library and checked out a book on hydronic heating systems. Well that and driving the local plumbing and heating supply house guys crazy.....almost 30 years later it still humming along. Knock on wood. Routine maintenance and an Aquastat ( and one self soldier repair) regular 1.0 80B 's etc. and its warm steady heat. Now that PEX loops in concrete is growing that COULD be a future and some other ideas to make the PA winter a little more bearable. Videos like this and youtube sure help those of us with limited knowledge. And back in the 1930's when my dad was a little kid you could NOT even paint YOUR OWN house with the union. Times change....soon all this knowledge will get a lock on it too so that only AUTHORIZED personnel can LEARN. History folks. Mine was similar just without pex, pumps for each zone (just have one Bell and Gosset for the entire house on the RETURN side) not shut off for the 1.5 inch main loop either. I know I know I have drained it all ONCE. Thanks to all who made this video.
High efficiency & high maintenance!
Now thats what i like to see right there
Beautiful installation for sure
Wanna see something crazy? Grabowski Energy in Greenport NY has something for you. You should go see that same job a year later, press fittings and Glycol don’t mix
Wow nice work
They really did a great job
testable RP , or break tank please , is there an air gap in the unit ?
2 quick questions
#1 are the screws that your connecting your exhaust/fresh air factory screws? I believe those screws should have a specific coating on them...
#2 why the change to black iron at the exp tank/air Scoop? Just curious to know of there's a specific reason for that??
Thanks
It brings me joy to see the Grundfos logo
When we put in our new solid state transmitters, the heat exchangers came with Grundfos pumps. 25% the size of the old pumps, run silently, and can be changed in minutes if the need arises.
Good video very interesting. Plumber in Texas and i don’t see systems like this!
Me neither, honestly I wish we did more. Heater floors?! Sounds great
@@RogerWakefieldif you want some boiler insulation pictures let me know. That’s all I do
@@RogerWakefield
It called in floor heating.
We install the tubing on 8” centers. We keep the loop length below 200’ for each circuit. If you really want to learn more about this process let me know
@@RogerWakefield when I had my shop up here in North Franklin, CT I had radiant heating in the floor and let me tell you it is so nice because of the heat is even and the cement acts like a heat sink and if you have to do anything on the floor you’re not freezing your butt off especially in the winter time up here in Connecticut! I am and have been a subscriber of yours and you do excellent work 99.99% of the time.
Roger one thing I have notice over the years with radiant heat system is if one happiness to get leak in the system there is no way to fix it.. I know a few systems that have failed...
This is big here in the north east, we install stuff like this on a regular basis
what size copper was used in this build, for the manifolds and to supply each pump?
yeah, wait until you see the setup needed to thaw a driveway! i doubt there are many of those in Texas
We got a peak of what that looks like…CRAZY
That's a condensing boiler. I wonder why they were running 180 degrees into the radiant floor heat. I have a weil-mclain version of this. No mention if this Rinai unit is a step-down boiler. I'd imagine it is.
One thing for sure that install certainly scratches that OCD itch.
Why no low loss header ? Boiler will work more efficiently with one it stops pumps working against each other back circulation, also boiler will modulate better saving energy
The manifold coming out of the bottom of the boiler is a closely spaced tee system, which accomplishes the same thing as a low loss header.
I just watched this one. And maybe I miss something. But the cold day's there antifreeze in the water. Forrr heating purposes. But not in the tap water, right, or for showers water as well. It's just for heat. Just wondering. Have a good day and God Bless
Correct,the domestic water and heating water are separate.
I am a union carpenter and I love when electricians and plumbers do their work like this. When I see tangled wires and piping that looks like a steam punk project it makes me wonder what other sins they have committed.
Nice looking work but isn't it overkill for a house that looks average in size - one floor and DHW only 30'away ?
Womder how much all in?
What's up with the black pipe to the expansion tank? I would think that would introduce rust into the system over time?
It's called adding inhibitor
That system would be great in one of those 3D printed concrete houses they are building now. You could have the pipes running under the floor and the walls. With the amount of money the homeowner would save, it sounds like a great match as those 3D printed houses are expensive.
So is running a combi.. especially if on propane..better to go with trombe or barra wall if going with concrete house
Lol that was funny how you asked him a question and he immediately stated talking to the camera and not you.
Sounds like he already knew the answer so he told the cam instead or just proper camera manners my guy
Roger had to pull all the answer out of this dude, he is crappy sales man for his product..
3 radiant loops, 3 Air Handling Units in attic, and also Potable Hot water demand. Can this Rinnai unit handle that load in sub freezing weather?
Yes, We mention it during the video…It still operates in -20°f
@@RogerWakefield yeah, it operates Roger but that what kind of efficiency? Don’t forget these “high efficiency“ units are rated differently than the non-high-efficiency so even though you saying that they save a lot of money, they really don’t because the high-efficiency units are rated at a lot lower temperature than a regular conventional boiler would be. (be like comparing apples to oranges, yes, they are both fruit but they are two different things) Don’t be part of the scam. Roger but rather be part of true and honest information to your viewers. Otherwise you’ll be talking to be like a politician, only doing half truths!
Edward H. - “Integrity, Plumbing, Septic, Heating and Drain“ out of the Clinton, CT USA area.
Exactly that lil tug boat that could of a Rinna I'd maxed out all the time and forget about a nice 30 min bath....at -20 degrees all the energy going to DHW, your pipes will be nice and busted from ice. This is all a joke. I bought this bs idea and lived through the constant break downs and waiting for heat and hot water not to mention waiting for parts of the nician he'll, but the good news is it's very efficient... and included in that efficiency is the efficient way it back flushes your wallet! All junk!!!
Pretty sure glycol which I assume your using for anti freeze doesn’t do well with propress connections.. idk could be wrong I still sweat all my stuff.. looks like a clean install besides the uponor lines, I’ll never like that look
I do chemical sales and service for hydronic systems. See a lot of propress systems with glycol and no issues. As long as pH is maintained and there’s proper amount of corrosion inhibitor they’ll last longer than the owners. May be issues with ethylene glycol but since we rarely use it and most people are switching to propylene to reduce hazards and hazmat disposal I really don’t know if they affect the o rings. Another thing we’re seeing more of is putting ethanol alcohol in systems for freeze protection. Not sure how that will affect them either.
I’m not sure why they would even need it on new construction, should be very well insulated home
Prolly garage floor@@glenarseneau1231
Oof that’s pushing it on 2” not to mention the concentric kit adds like 20ft onto total load.
Great to see the European way of doing things in the USA
We're slowly but surely getting there😅
Why no buffer tank? Aren't all those pumps going to work against each other and stop the boiler from modulating? (if it can)
Good point, that boiler is a commercial grade in the UK. We would definitely put in a tank to supply hot water. But, he did say the boiler can supply both at the same time so I have to research that design. Where is that boiler made and what’s the model?
@@digitariaThis is a Rinnai I Series boiler, made in Japan. Combis use a flat plate heat exchanger to produce domestic hot water, similarly to a tankless water heater but using hydronic system water in lieu of a burner. They work extremely well when sized and installed correctly, they're extremely popular.
@RogerWakefield
Hi Roger. I thoroughly enjoy all your vids!
As a scandinavian plumber, i have a question.
Why is it, that americans often install so many pumps? I come From the country that produces these centrifugal pumps, and here we usually just install one Per house.
Is the just that the building is that big?
It's really a matter of personal preference. A lot of North American hydronic heating runs off of open/close thermostats as opposed to a constant circulation system where individual thermostatic valves are controlling the radiators. This particular installation is using individual zone circulators, but there are plenty of systems where there's one larger circulator feeding individual zone valves that open or close based on a thermostat call. Just different design philosophy at the end of the day.
@@patrickcorcoran4377 Right, and it looks really good! But it also looks labor-and cost expensive. I don’t know what you guys pay for a centrifugal pump. But here, they are around 350-450 dollars.
@@rasmusfrom8455 depends on the market and the specific circulator, but you're probably in the range of $150-200 per circulator. Now, some municipalities and utilities have rebates for certain kinds of circulators which can drastically drop the price of those once taken into account. Yes the cost might be higher, but you're getting additional redundancy with multiple circulators- if one goes down you've still got heat in all the other zones.
I SERIOUSLY DOUBT he’s ‘never, seen anything like this…..I see these types of installs all the time in Southern Maine
Well I’m from Texas…we don’t see stuff like this in residential
Beautiful job....but no redundancy. That boiler dies you have nothing. Always have a separate tank or wall tankless for that. Also hydronic has its places but is not the do all end all. Furnace and ductwork is way cheaper, provides airflow and filteration for house, dead air in a house can feel gross. In canada the best setup in furnace forced air with ac and boiler for domestic with infloor in basement. If furnace dies you still have infloor....
Undersized also, it's going to fail faster than usual
Screaming for hydrolic seperation and pressure vessle looks undersized .. but nice to look at
It has Close couple tees fitted.
i'm a brand new pre apprentice and seeing hydronics like this is super intimidating. is there any way to learn this stuff outside of the job? the extensive piping all over the place just confuses me, i don't even know which way flow is
Reading. It’s a lot of footwork to learn it off the job and I wish I had specific stuff to send to you. Instruction manuals.
Dan Holohan's books are a great place to start. "Classic Hydronics," "Pumping Away," and "Primary Secondary Made Easy" are 3 fabulous resources to teach you the fundamentals.
There's so much UA-cam videos on this stuff and i personally went to a Navien class where you take one of there units apart and put it back together and troubleshoot it....prettty sweet experience....the longer you do it the easier it gets, every job you go to take a picture and draw a diagram of what's what and label it and you'll understand it in no time
Is this you first job
It is not
As an apprentice, I look at shit like this and feel super anxious/dumb because I don't understand any of it. Lol
Heating conversion from electric heat to gas in theory except for the 6 electric circulator pumps nailed to the wall and one in the boiler. At least that install did a complete backflush on the homeowner's wallet.
Exactly all that BS did was backslash his wallet. Scammers...but what about the efficiency benefit....umm the boiler turns off when the desired temperature is achieved, so the sooner the better. I don't want to wait 45 mins for heat in October or January....all this green BS is on3 bug scam
Lmao.
Did tyrant holcul ban propane in NY too?
The plumbing for a Combi Boiler system looks like something out of a submarine. The plumbing in my house with a gas powered furnace with ducted air and a gas hot water heater is dead simple. Is there no need for A/C in that part of the country?
Of course there is just not a long season for a/c
Impressive!
Where’s the pipes insulation?
flex gas line through a ceiling/floor?!
This is pretty common in northern Utah.
With this setup I would go with an Air to Water heat pump. It would take care of cooling as well.
The last house I did, we placed cooling pipes in the ceiling. And cool the system with ground water, that’s used for the garden, separated with a heat exchanger.
Why is some of it sweat and the rest press? Why not just sweat it all?
How come no one uses PPR in america?
Your looking at circulators, radiant mixing valves air scrubber, prv backflow preventer. Typical hydronic heating, expansion tanks
🍻🍻🍻
Looks like the pipe works in a Miyazaki movie.
cool
only one thing I would have done differently is i would not have put the steel pipe they have on the water supply to the heating system and to the expansion tank. Its not a big deal but keeping all steel out of a plate type condensing boiler is the best way to go. Its only a few feet of pipe so no reason to introduce any rust into these systems. Just my opinion.
i would had stayed away using black fittings and add a shut off for easy replacement ..its rare... but makes it easier for $5.00 . Thats it
Gas pipe looks to be undersized and that Trakpipe isn’t supported. The piping looks good other than lack of primary secondary. Low loss header doesn’t count.
3/4 that’s right on the boiler
We have a boiler but unfortunately we have the furnace which I think is hydronic and separate water heater, it’s a mess!!
Question for you is , how big is the house ? How many systems they have that requires heating? And where is the Zone Valves , I only seen programmers, everything is controlled manually, they have dozens of isolation valves , it’s not very efficient to have it this way , have you noticed, he switched the valves off manually, can you imagine you forget to switch something off , the pumps will be pumping the water against each other 😂😂😂
That’s not how it works, the system has circulating pumps the iso flanges are to swap out a circular pump if it gos bad without draining that zone, zone valves are garbage this is a much better install, each pump is on a separate zone they are never pushing against each other he has all the pumps off because it’s not up and running yet
Zone valves SUCK. Real plumber install Circulators with isolation flanges.
That heater is not 95% efficient at 175°F, not unless physics work differently the other side of the pond? Why no demand/weather compensation - there's at least 10% seasonal efficiency left on the table, probably more - it's easy when the combi has its own hot water circuit.
This is nothing. You should see the 12 bedroom residential house we just did in Elkhart, IN. All kidding aside, it makes this look like an elementary school.
Looks like my house. Wish I could post a picture.
is this a new thing in the us or is just promoting ?
I wouldn't say its new...but it is becoming more common
A trend of up selling to stick with Jon's family..
Need 2 adapt
That is a nice wall of copper, but this guy is not very well being interviewed... I dunno if they cut him off, or what, because sometimes hes talking and sounds like its mid sentence and he just stops.... but some people just get nervous and cant be on video very well (like me)
Mathew with Nolan Energy knows his stuff, off camera he was talking non-stop about this job and the joy he had while doing it. On camera he got a little shy, still doesn't take away from the great work he, and his team did 💪
Roger, I've asked you to do a video on a suicide shower install! Come on man, listen to a fellow Texan!
Hope all that pipework gonna be insulated (British regs)
Instead of insulating, they add anti-freeze into the system
The insulation is to prevent uncontrolled heat loss. As a retired heating engineer I also question the necessity of so many pumps having installed many multi zone systems with a mix of underfloor and radiator zones all under thermostatic control with a maximum of two (pumps).with all zones under independent thermostatic control.Corrosion inhibitor/antifreeze is always added. That said ,its a very neat bit of plumbing but unescaseraly complicated and therefore expensive. Europe is the home of the gas combi boiler, Germany producing the originals (Valient) in the sixties I beleave. It took a while for the the UK to approve combis because of their direct connection to the mains water and the risk of contamination of the same. but for many decades many houses ,large and small have used combi boilers. The current trend (pressure from government on environmental grounds) is to go the heat pump route as the heat source.
Why would you put a tankless water heater in upstate New York where it gets below 20°? That’s crazy.
It’s a combi boiler, not tankless water heater
10s of thousands for 10 percent efficiency
You would have a great point if all you gained was 10% efficiency, why would anybody do this? However, that's not the way these work.... I think you might not grasp how this technology operates.
That flame inside the boiler modulates itself, that means its self adjusting. Think about it this way, if we still heated our house with a giant fireplace in the middle of the living room, you would build a small fire on a September night, but you would build a bigger fire on a February night. Both fires would heat your house adequately because September is not as cold as February. That's what this boiler does all by itself. It's going to turn on and burn the right amount of fuel with zero waste every single time.....AND it's 95% efficient.
This boiler will save you 40% of what it would cost to heat with a standard 80% efficient boiler....
@@mtoto78 lol. I know how it works. It still is more expensive and the maintenance and repair is doubled. Been in refrigeration for 20 years. The high efficiency crusade will use less energy. No argument there. But you will spend thousands more to install and thousands to fix when it fails. Also, the unreliability worsens and when the equipment fails the parts will always have to be ordered leaving the customer down for longer.
Cost is the only factor anyone should ever look at?
@@zekemontgomery6678 yep, and that's why those systems are pushed. Steady work.
Sure it's 95% efficient but not at 175°, which the boiler is displaying.
🤓🤤
THERE IS NOTHING EFFICIENT ABOUT 300 ZONES ON ONE BOILER
Aw, welcome to UK 1970.
That's probably like 30 to 50 grand
Okey maybe I'm am just a spoiled brat in some way or another, or maybe I'm just stupid, but I am 24 years old, I just learned how to solder copper and I don't want to see and moreover ever use a propress tool. You can not convince me that a bloody rubber ring pressed on the copper surface will create a water tight seal for 50 years. Have you ever seen an oring taken out from some union installed in a heating system? It is disintegrating into bloody dust! Plus the pipe itself moves over time. How can you convince me that it will not rub trough the smooth surface of the pressed oring and not create a leak? You may ask, well, if the oring in the union is crusty but it did not leak, how will it leak in a propress fitting? It will leak because the union is locked together by a thread of the union nut and fitting itself. It is mechanically joined together. And what about propress fitting? it is just pressed together. There is no biting thread that immobilizes the fitting and pipe. It is just pressed together. It will eventually loosen up and start moving with expansion and contraction of the pipe. Moreover it will loosen up because of water hammer. But you may say that the Viega is proposing that the fitting and the oring are designed to not leak for at least 50 years. Bull fucken shit. How can they now this stuff? Did they install propress fittings in 20 different environments and left them there for 50 years? No they did not! They claim their orings are special rubber that is resistant to harsh environments. Bullshit. They order boxes of 50k rings directly from china and use them in the fitting. Lets not forget its 2023, and not 1980s when the proposals and special features of special new things are actually true what are claimed by the manufacturer. Its all bullshit these days. What if the fitting is in a very humid area? it will corrode into green dust. What will happen if the corrosion creeps into the fitting and corrodes beyond the pressed seal? How will it not leak then if the corrosion creates uneven pitting? It is a time bomb, a recepy for disaster. Soldering is king and should remain this way, especially in heating systems! This is only my opinion.
Well said
Thank you :)
@@stevec6365
Hi, I work as a plumbing and heating installer in the North West of England.
One hotel I work for had a brown plastic - push fit system installed in the early 1980's, it was called Acorn Plumbing back then.
I have to say its still working well, no leaks, fittings can still be rotated without leaks.
The only leak I've come across was where someone had missed the stainless steel pipe insert on a pipe to a compression fitting.
So that's around 40 yrs old now, amazing isn't it.
Although I do wonder if O-ring plumbing will prove to be more reliable on plastic pipe rather than copper pipe, time will tell.
All the best, Fraser
Nice install but even in NY, there is a reason installs like this are rare: Cost... If I have baseboard hydronic, it's pretty comfortable compared to forced air, then why would I go through the effort of a complete remodel to add in-floor? I bet this system was easily 30 grand to install and since the home owner burns propane, they aren't really saving money vs electric baseboards (in the upstate NY energy market). The system will never pay for itself, but most of these "efficient" system installs never do. It's just a fact- not trying to be negative.
Again, cool install, but these in-floor systems are a rich man's game- in 12-15 (at best) years they will be ripping out that boiler and putting in another combi (maybe heat pump system, who knows) where as a cast iron boiler will be running for 30+ years. Obviously baseboard electric is incredibly reliable and simple, but it's cost to operate varies wildly depending on how it's used and electric rates. For upstate NY, electric resistance heat is expensive but can be the cheaper option when oil and propane are high- like the past couple years.
For me, I have made the decision to be less comfortable and go with a mini split system. Things feel a lot more drafty on the cold days, but I refuse to put money into a new hydronic system when oil is $4 and $5 a gallon and the NYS legislators are working to ban fossil fuels from homes.
looks expensive LOL
just the plumbing with the unit on the wall without the loops is above 25-35k here in Seattle.
@@terabyte7979 You're crazy its no where near that for just material lmao
@RankSevenYasuo it sounds crazy, but you don't live in Seattle without expecting that. 680$ per hour and between 85-100% mark up. And we do these frequently. Business cost is also high. If you live in Ohio then sure, all it takes is a beer and a half eaten burger.
@terabyte7979 I do large commercial plumbing and hvac in CT/NY lmao im no stranger to expensive wasted money systems. I guess I'm not from Seattle but sounds like you're exaggerating, that's not even a days work whats on that wall with 2 guys.
@RankSevenYasuo I think you're exaggerating now. That's definitely more than a day's work. From planning to ordering materials, getting the job site and items ready. Measuring getting the pumps ready, wiring and so on. There is so much going into this, 30 hours minimum for a system similar to the one shown. Maybe for a unit swap out 1 day should be enough, but that's rarely all that's needed.
Where is that boiler made and what’s the model?
You can find more info in the description..I linked the product from Rinnai..
@@RogerWakefield ahh, thanks, double dry heat exchanger that should soon get to the UK. We use tanks to store hot water. There is also a Vailant heater with a small storage tank on board that would compensate for the hot water demand.
This systems are bigger than high rise buildings in NYC, for example Hudson Yards.
So many totally unnecessary things and a rip off for the customers and not to mention complicity of these systems. Sorry but thumbs down 👎
Where are the check valves, this system is not optimal.
those circulators all have integrated flow checks(removeable if not needed). (flow check/check valve/ non-return valve) whatever you like to call them.
grundfos with an (F) in the model = has check valve. taco with (IFC) = has check valve.
across the different brands/models not all come with flow-checks, some can be ordered with/without and most will accept if the body is the same. not sure about all the other brands.
some are shipped pre-installed, others the valve is in the box and needs installed with a sticker on the unit, denoting it has a check.
Combi are great boilers and so easy to fit,been fitting in uk for 35 odd years ,the newer versions have built in water tanks to improve the flowrate on the HWS
Who in the Uk would need or pay for this system.
@@onlyme972Any dwellings or commercial units
It may be a boiler capable of 95% but it is running a lot lower efficiency at the 175f discharge temp because it is too hot to condense flue gas. Beautiful workmanship but bad design
Woa 95% efficient compared to like 300% heat pump. This company just likes selling a lot of GAS which is easy to do when you hook your customers up with all new propane boiler systems! $$$$$$
Electricty is crazy expensive in NY. So savings from higher COP of a heat pump is not fully realized. Equipment costs of heat pumps are much more also. Proper sizing, installation, and cold weather performance are critical for air source heat pumps to work properly. These boilers are less susceptible to bad system design and install than heat pumps.
But i agree, those systems are likely the future when combined with some solar. For now, propane is still cheap per BTU in the US. The war in Ukraine caused many Europeans to install air source heat pumps as gas prices peaked. That will be the test case for modern heat pumps. Europe has little natural gas while the US has lots and plenty of propane from refining gasoline. So with cheaper equipment and cheap gas this is common in the US. At least they aren’t burning fuel oil anymore. That has been the most common fuel source in the Northeast US since coal stoves were replaced.
@@daversj Ah yes I see what you are saying. I live in the north of Ontario and our gas is more expenisve than heating with a heat pump now. It will be neat to see what the Ukraine numbers show over the years!
its a loop
Rinnai combi-boilers are junk poor quality control and warranty issues.
No sane people would like gas pipes in their home....
Too bad that company sucks and doesn’t do work like that regularly for their customers
How do you know?
The guy is a proper pant sagger(plumber) not the sharpest when it comes to being a sales men and giving more details about the product they are selling.
The guy just there for money, not passionate enough in his product..
who?
@@RogerWakefield Your guest, the hot water dude, You see I do not even remember his name, because he so bland..
You had to push and prod him for answer about the product he installed/selling or it would of been awkward silence kind of video..
Mathew, he was very knowledgeable and knew his stuff. Talking to him a lot during my time up in New York, he does take pride in his families business and is very passionate about serving the customer, he is just camera shy.
Run away from combi boilers
It seems nobody wants to tell anybody how much they charge for this work, I can only guess why.
Hope all that pipework gonna be insulated (British regs)