Це відео не доступне.
Перепрошуємо.
How much money I saved with my hybrid heat pump water heater
Вставка
- Опубліковано 5 вер 2022
- How much money I saved by installing a electric heat pump water tank heater compared to my old tankless coil water heater on my oil fired boiler.
DISCLAIMER: This video is for entertainment purposes only. Always hire a licensed professional.
![Дон ДОН, Алаудинов и СБЕЖАВШИЕ из под Курска ахматовцы 😁 [Пародия]](http://i.ytimg.com/vi/dEfCf5IK26Q/mqdefault.jpg)
I just did the same project, switching from oil fired tankless hot water to the same Rheem Hybrid. Our numbers are startlingly similar.
Over 3 winters ago we switched to mini split for heating our living space. Since then the hot water boiler has been running simply for tankless domestic hot water. At the old heating setpoints of 155/165 (F) it consumed .88 gallons a day. This spring I dropped it to 145/155 and over that period averaged .67 gallons a day. With the mixing valve on the furnace this had zero impact at the points of use. My .67 gallons a day is a value in your range. Presently # 2 oil is locally at $5.50 a gallon. This is pretty much an all time high. For a realistic (optimistic??) projection I'll use $4.00 a gallon or $2.68 a day for oil fired hot water.
I have less than a weeks worth of data but since the consumption is digitally metered it is what it is in the short term. I have been running under 2.5 KW in early November. I am in Maine. Efficiency will improve in the warmer months and drop in the dead of winter as the basement chills. My local KW cost all in is less than $.15. At 3 KW per day that's $.45 a day for hot water. That's a net savings of $2.23 per day. After rebates the cost of the heater and my installation will be covered in about 1 year. After that it's gravy. Collecting and moving thermal energy is much more economical that buying the killowatts outright.
What remains to be seen is how I handle the depths of winter. A mini split head is now installed in the basement since the barely used furnace was casting off very little warmth. Into the coldest period, say mid December to mid March I have several options. My favored scheme is to leave the water heater in heat pump mode and let it concentrate some of the energy from the mini split. If that does not pan out I can go to to energy saver or even full electric. The beauty of this AP controlled system is that I can fly it day by day depending on the weather. It will be a learning curve, so for 3 months or so per year the savings may not be quite as bold.
With respect to the question of household sizes, the various models have some standard recommendations. A more objective path is to evaluate your usage. For most homes the lynch pin is showers or baths. I took a funnel, 1 gallon jug and my iPhone timer and determined that my shower head sprays 1 gallon per minute. Considering that the water heater may hot to the bottom this still allows an easy 30 minutes of showering. That's plenty for the two of us. With recovery time between showers it's even more robust.
I installed a mixing valve set to 118F on my system and the heater runs at 125F. This makes the point of use less dependent on uniform tank temperature. The mixing valve also avoids relying on the heater controls for anti scald assurance. The AP, especially in slider mode allows the user to change the set point without notice, with just a misplaced swipe. This is a significant scald risk. Having the mixing valve locks the temperature down with hardware. Some jurisdictions require this. Of the dozens of installation videos I have watched, none have installed this valve. A few mentioned the option. The mixing valve can also serve to extend the gallon capacity through dilution.
All in all, this is a no brainer investment for most home owners.
The Rheem controls are primitive and the AP looks like it was an intern's summer project. I may be doing a video on all of that. They certainly have room to evolve! However, the current design is compelling enough to not delay this upgrade.
Hi,
Great video!
I installed a ductless heat pump in my nephew's rental house, by installing the heating / cooling head on the top of a TV cabinet, and then ran the copper lines out the window to the outdoor unit. Then ran a 120 volt cord to plug in behind the TV stand. It took about 4 hours to install the unit, Della brand, 12,000 Btu and 120 volts. It will draw about 1,100 watts in heat mode and less in the cooling mode. It is almost silent, less sound than his refrigerator.
Cost was $730 for the unit, including tubing on Amazon. I would highly recommend one or two of these units on any home with oil heating, as the cost is significantly less than running a electric heater or oil burner.
To heat 100,000 Btu's, you would use about 1 gallon of oil (135,000 Btu's less loss from efficiency) for about $5 or $6. this winter! Or burn about 1.3 gallons of propane, or 1.3 therms of natural gas. Or run a electric heater using about 23 KW of power, or run a heat pump using about 5-7 KW of power, depending on the outdoor temperature.
When it is 0F, the heat pump might not keep up with the heat loos of your home, and using the boiler might be required. But you could set the boiler temperature to say 140F, and it will not cycle on as much, and will provide just enough heat to meet your needs, while using the heat pump to provide more of the heat at a much lower cost - even with your higher than average rates of $0.24 per KW.
In Portland Oregon, the rate is 0.12 per KW, but I signed up for time of day plan, where on weekdays between 5 pm and 9 pm, I pay $0.32 per KW, but the rest of the time is much less, 0.08 overnight and weekends, and 0.10 per KW between 7 am and 5 pm on weekdays.
I have been using a heat pump (I install them myself) since 2014. I installed one large enough to heat my house without the need to run the back up electric heater. So far this winter (the coldest temp has been 29F) I have avoided running the heat pump during the 5 pm - 9 pm higher cost time! I do heat my house to 72 by 5 pm, then shut it off for most of the night.
Heat pumps can collect the most heat when it is say 50F outside, and then about 30% less heat at 32F, and 50% of it's rated heat output at 0F. I have never seen 20F around here, hope I never do!
So IF you use oil, get a ductless heat pump!
Amazon sells some self install versions, that do not require a vacuum pump to install them. They use foil over the ends of the tubing, and as you attach them, the covers are cut away, and opened while not letting out any refrigerant that is pre-charged into that special tubing kit. Once installed and tight, you leak check with soap bubbles, then carefully open the valves with a allen wrench, and connect the power, you are done! I used the less expensive unit with a 15 foot long connecting copper tubing, and already own a vacuum pump.
I installed one of the 18,000 Btu unit's for my neighbor, and he loves it, and has not tried it in the cooling mode, but will love that this summer! His is mounted in the living room of his 1,400 square foot home, and will only provide some of the heating required on very cold days. But he will not need to run his electric furnace anymore, except on the very coldest days of the winter! He should have bought the slightly more expensive 24,000 Btu unit for $1,200, but decided on the $800 18,000 Btu unit to save money.
This is a link to a self installed unit, 24,000 Btu, and the tubing comes precharged with refrigerant, so no need to use a vacuump pump. Just drill a 2" hole in the wall, and install the outdoor unit within about 6 feet of the indoor unit (the tubing is about 12 feet long, so it can run down the wall to the outdoor unit, and about 3-6 feet across your yard).
smile.amazon.com/Klimaire-Conditioner-Pre-Charged-Quick-Connect-Installation/dp/B08W1XV169/ref=sr_1_8?keywords=cold+climate+heat+pump&qid=1669537200&sr=8-8&ufe=app_do%3Aamzn1.fos.17f26c18-b61b-4ce9-8a28-de351f41cffb
I 24,000 Btu unit in your living room, and a couple of small electric heaters in your home, I think you could survive the winter with minimal use of your expensive oil fired boiler! And have a wonderful air conditioner to use in the summer months!
About to do same project. Thanks for great video.
Great job on the video, looking to do this exact same thing to our home.
Or you can just set oil burner aquastat LO to 120 in non-heating season. Setting it higher wastes oil.
So you had a Plummer install it? I found the rebate not worth it in Massachussets and installed myself, as the installation price was $1000.
I actually installed it myself.
I live in Washington state and I was wondering what would be the best water heater there as far as an electric one to save on my electric bill. The water heater I have now I think it’s a 40 or a 50 gallon and it’s starting to leak it’s about oh it’s about 15 years old so gotten quite a few years out of it but I need to just say see what I can say. I got four people in my home. Any suggestions?
Get what he has. Rheem hybrid at Home Depot.
Dude, where are you located? And how many people in the house?
Those things will give a better idea.
I'm located in the Northeast US & there are two people in my household.
Thanks for watching!
I live in New York and 5 people in the house. Have been debating to buy this heat pump but some people say its better suited for south and west coast. I have similar setup like yours, boiler with coil for DHW.
How did you measure your oil usage?
Hi