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How to Tell if Your Ducts are Properly Sized for a New HVAC System
In this video, HVAC expert Chris Morin dives into the essentials of evaluating your existing ductwork for system replacements. Forget relying on outdated rules of thumb! Chris demonstrates how to take accurate, meaningful measurements that reveal whether your ducts are sized to handle the airflow demands of an existing and new HVAC unit.
Topics covered include:
How to measure Total External Static Pressure (TESP) and airflow (CFM) for precise evaluations.
Using blower charts and TrueFlow Plates to check if airflow meets design targets.
Recognizing and correcting imbalances between supply and return ducts.
Practical examples to help you know when ducts need adjustment or expansion.
Avoid costly guesswork and ensure your new HVAC system runs at peak performance. For a deeper dive, join Chris in his monthly webinar on replacement system design. Make sure to subscribe for more HVAC Pro Blog insights!
Chris Morin is the Author, Owner & Founder of the popular HVAC Pro Blog. For Advice with Residential HVAC System Design, Quality Installation, and System Diagnosis, you can find Chris’ Articles on HVACProBlog.com, Exclusive Member Content on Patreon, or popular social media outlets Facebook, LinkedIn, Twitter and UA-cam.
- Royalty Free Music from Bensound
Переглядів: 252

Відео

4-Week Virtual Masterclass: Mastering Residential HVAC System Design
Переглядів 8119 годин тому
hvacdesignsociety.freshlearn.com Chris Morin is the Author, Owner & Founder of the popular HVAC Pro Blog. For Advice with Residential HVAC System Design, Quality Installation, and System Diagnosis, you can find Chris’ Articles on HVACProBlog.com, Exclusive Member Content on Patreon, or popular social media outlets Facebook, LinkedIn, Twitter and UA-cam. - Royalty Free Music from Bensound
Wicked Good Customer Reviews: Lessons from 'Wicked' for HVAC Pros
Переглядів 1183 місяці тому
📅 Want more in-depth content and personalized advice? Join the HVAC Design Society and become an elite member for exclusive monthly Q&A sessions and more! www.patreon.com/HVACProBlog In this video, I'll draw fascinating parallels between the beloved musical 'Wicked' and the world of HVAC customer reviews. From understanding different perspectives to addressing superficial concerns, I'll share v...
Top 10 Sales Habits for HVAC Professionals: Expert Insights
Переглядів 1813 місяці тому
📅 Want more in-depth content and personalized advice? Join the HVAC Design Society and become an elite member for exclusive monthly Q&A sessions and more! www.patreon.com/HVACProBlog Join HVAC expert Chris Morin as he dives into the essential sales habits every HVAC sales professional needs to master! In this video, you'll learn: Lead Generation and Prospecting: How to define your target audien...
Duct Testing and IECC Code Updates for Sales Professionals
Переглядів 2893 місяці тому
📅 Want more in-depth content and personalized advice? Join the HVAC Design Society and become an elite member for exclusive monthly Q&A sessions and more! www.patreon.com/HVACProBlog In this video, Chris dives deep into the critical aspects of duct testing and the latest updates in the IECC code for 2021. He explains why understanding these changes is essential for sales professionals in the HV...
Understanding Duct Leakage: Impact on Capacity and Loads
Переглядів 3346 місяців тому
www.patreon.com/HVACProBlog Join our HVAC expert as they answer the crucial topic of duct leakage and its significant impact on system capacity and loads. In this informative video, learn about the average duct leakage in ducted systems and how it affects overall performance. Chris Morin is the Author, Owner & Founder of the popular HVAC Pro Blog. For Advice with Residential HVAC System Design,...
HVAC Design Society: HVAC Apprenticeship Program Needed?
Переглядів 3666 місяців тому
www.patreon.com/HVACProBlog Join Chris in this captivating update (April 2023) as he shares his recent experiences in the HVAC industry! What is worse than a 'Dead Head Sticker on a Cadillac'? www.linkedin.com/posts/christophermorinhvac_well-this-is-a-first-and-falls-into-the-activity-7062760369869479936-RQXJ? Do we need an apprenticeship program for Residential HVAC? Chris Morin is the Author,...
Should HVAC Sales Pros Specialize in One Brand?
Переглядів 2266 місяців тому
www.patreon.com/HVACProBlog Join Chris Morin from HVAC Pro Blog as he tackles the question: Should HVAC sales professionals specialize in just one brand? In this comprehensive training session, Chris discusses the benefits and drawbacks of focusing on a single brand versus offering a range of options. Learn about: Becoming the go-to expert within your geographical area Simplified training and i...
Deciphering Duct Systems: How to Determine Correct Design
Переглядів 5346 місяців тому
www.patreon.com/HVACProBlog In this illuminating video, our HVAC expert unveils the secrets to assessing whether a duct system is designed correctly. Join us as we explore key indicators including CFM, Static Pressure, Duct Leakage, Duct Insulation, and Duct Velocity, essential for ensuring optimal system performance and customer satisfaction. Chris Morin is the Author, Owner & Founder of the p...
Optimizing Residential Duct Systems: Velocity Guidelines Explained
Переглядів 8336 місяців тому
www.patreon.com/HVACProBlog Join us for an insightful discussion as our HVAC expert delves into the recommended minimum and maximum velocities for designing residential duct systems. Whether you're looking to enhance your knowledge base or refine your sales pitch with technical expertise, this video provides invaluable insights into optimizing residential duct systems through velocity guideline...
Maximizing Efficiency: Boost Productivity or Expand Staff
Переглядів 1487 місяців тому
www.patreon.com/HVACProBlog Welcome back! In this week's HVAC Pro Blog training session, Chris Morin delves into the critical question: Do you need more people, or do you need to be more productive? Join us as Chris shares invaluable insights on boosting efficiency to optimize your HVAC sales team's performance. Chris kicks off with a compelling proposition: if you could increase efficiency by ...
Decoding Ductwork Metrics: Friction Rate vs. Static Pressure Explained!
Переглядів 7077 місяців тому
www.patreon.com/HVACProBlog Join us for an enlightening discussion as our HVAC expert breaks down the crucial differences between friction rate and static pressure for ductwork. Whether you're a seasoned sales professional or new to the field, understanding these fundamental concepts is essential for optimizing system performance and customer satisfaction! Chris Morin is the Author, Owner & Fou...
Unlocking HVAC Business Success: Pricing Strategies & Profitability
Переглядів 5127 місяців тому
www.patreon.com/HVACProBlog Are you an HVAC business owner struggling to set the right prices and achieve profitability? You're not alone. In this video, we delve into the critical aspect of pricing for HVAC contractors. Learn why pricing is the key factor determining the success or failure of your business, and discover actionable strategies to ensure you're not leaving money on the table. Fro...
Navigating Duct Leakage Testing: Key Changes from 2018 to 2021 IECC
Переглядів 2057 місяців тому
Navigating Duct Leakage Testing: Key Changes from 2018 to 2021 IECC
Demystifying Available Static Pressure
Переглядів 2918 місяців тому
Demystifying Available Static Pressure
Crucial Insights: Understanding Duct Straps & Varied Code Requirements Nationwide
Переглядів 4138 місяців тому
Crucial Insights: Understanding Duct Straps & Varied Code Requirements Nationwide
Domestic Hot Water Sizing & Water Heater Ratings: Essential HVAC Sales Insights!
Переглядів 1 тис.8 місяців тому
Domestic Hot Water Sizing & Water Heater Ratings: Essential HVAC Sales Insights!
HVAC Design Society: HVAC Soft Skills, Contractor Insights, and a Groundbreaking Course!
Переглядів 1448 місяців тому
HVAC Design Society: HVAC Soft Skills, Contractor Insights, and a Groundbreaking Course!
Decoding Formicary Corrosion in HVAC Systems | Causes, Impact, and Prevention Strategies Unveiled!
Переглядів 5579 місяців тому
Decoding Formicary Corrosion in HVAC Systems | Causes, Impact, and Prevention Strategies Unveiled!
Unraveling the Mystery of Ventilation in Manual J Calculations!
Переглядів 4139 місяців тому
Unraveling the Mystery of Ventilation in Manual J Calculations!
HVAC Duct Design Mastery: The Supply Plenum & Transition Decoded for Sales Pros!
Переглядів 4,8 тис.9 місяців тому
HVAC Duct Design Mastery: The Supply Plenum & Transition Decoded for Sales Pros!
Navigating the Future: 2024 HVAC Efficiency Standards, Ratings, and Refrigerant Changes Unveiled!
Переглядів 9059 місяців тому
Navigating the Future: 2024 HVAC Efficiency Standards, Ratings, and Refrigerant Changes Unveiled!
4 Strategies to Halt Self-Sabotage and Achieve Success!
Переглядів 15011 місяців тому
4 Strategies to Halt Self-Sabotage and Achieve Success!
5 Signs Your HVAC Business is Ready to Skyrocket | Grow Your Residential HVAC Company Today!
Переглядів 21011 місяців тому
5 Signs Your HVAC Business is Ready to Skyrocket | Grow Your Residential HVAC Company Today!
Why You Must Verify Duct Size When Replacing Your Furnace: Fan Law #2 Demystified
Переглядів 1,2 тис.11 місяців тому
Why You Must Verify Duct Size When Replacing Your Furnace: Fan Law #2 Demystified
Duct Sealing will Change the Size of Your A/C or Heat Pump!
Переглядів 10411 місяців тому
Duct Sealing will Change the Size of Your A/C or Heat Pump!
The Critical Impact of Duct Conditions and Loads in ACCA Manual J V8
Переглядів 35911 місяців тому
The Critical Impact of Duct Conditions and Loads in ACCA Manual J V8
Flex Duct: Doubling Friction Rate
Переглядів 15211 місяців тому
Flex Duct: Doubling Friction Rate
Why You Can't Size a Variable Speed Heat Pump to Your Existing Duct System
Переглядів 3 тис.Рік тому
Why You Can't Size a Variable Speed Heat Pump to Your Existing Duct System
Mastering HVAC Sales: Why Load Calculations Are Key on Your First Sales Call
Переглядів 277Рік тому
Mastering HVAC Sales: Why Load Calculations Are Key on Your First Sales Call

КОМЕНТАРІ

  • @CybekCusal
    @CybekCusal 2 дні тому

    It's interesting how this residential approach is so different than how it's done with commercial systems.

    • @HVACProBlog
      @HVACProBlog 2 дні тому

      I would love to know more! I did very light commercial service (RTU < 10T) in the past, almost my entire 25+ years was residential focused. What is one or two key differences?

    • @CybekCusal
      @CybekCusal 2 дні тому

      @@HVACProBlog there's a lot different. Not sure I can cover in a comment. For example, external static is measured after the cooling coil. And it's different from total static. We don't have anything called Total external, it's either total or external. And we measure cfm via a duct traverse measuring velocity. Total static is also before any fillers. Because our equipment includes everything from the factory inside the unit.

    • @HVACProBlog
      @HVACProBlog 2 дні тому

      Ah yes, I see - since there are a lot of packaged systems. When changing the filter types, replacing a MERV 8 withe MERV 11 for example, I can see this also wreaking havoc on where/how to measure too...

  • @leonelvelasquez3645
    @leonelvelasquez3645 6 днів тому

    Can I get more information about the course??

    • @HVACProBlog
      @HVACProBlog 5 днів тому

      Absolutely - the link is in the description, but to make it easiest: hvacdesignsociety.freshlearn.com

  • @DavidCasey-u7g
    @DavidCasey-u7g 7 днів тому

    👍👍

  • @eringoriginal8714
    @eringoriginal8714 13 днів тому

    Thank you so much for this video. I am in the planning stages of a full gut of an old house. I am planning on doing underfloor radiant heat (gas combo unit) and Central A/C. The house is a one floor with a large open unfinished attic. I have only ever seen returns on walls (high and low) but kept thinking the ceiling would be better for a cool only system. Efficiency is a huge priority for me. Adding 2 ceiling vents for input and output seemed like a good idea. Your video confirms that!

  • @kevinpearce3281
    @kevinpearce3281 16 днів тому

    Wow that video sucked.

  • @OGoshlyKakashi
    @OGoshlyKakashi 18 днів тому

    Sounds like I hit the hand payout at the casino

  • @kennethlong3631
    @kennethlong3631 27 днів тому

    Question, heat rises I got to vets in my room was near the bottom of the ceiling ones at the bottom of the wall. The top of the heat the bottom is the air should one be closed and the other open.

  • @abbii1661
    @abbii1661 Місяць тому

    show pics videos of what you are talking about. sorry, but your vlog is boring

  • @JeremyFloyd-s3j
    @JeremyFloyd-s3j Місяць тому

    That pressure loss of .065 is inch of water column?

  • @staycoolwithrob
    @staycoolwithrob 2 місяці тому

    Thanks

  • @thatflymechanic
    @thatflymechanic 2 місяці тому

    This is the first video I've watched for HVAC. Am I able to piggy back off another duct to cool down the garage? My hvac is on the east side of the house in the attic. Their is a duct that goes to the hallway. Am I able to do a y connection to get to the garage? Or is their a better way of routing?

  • @syed_armansalaimazz8835
    @syed_armansalaimazz8835 2 місяці тому

    Great presentation

    • @HVACProBlog
      @HVACProBlog 2 місяці тому

      Glad you think so! Thanks for watching!

  • @DuctlessExpert
    @DuctlessExpert 2 місяці тому

    Hello When you have a home with a basement condition or not and the complete hvac system is there I understand that the basement should be conditioned , but most are not Do you include the basement sg’ in the manual j When you have a attic that has 1:00 1:00 hvac in the attic do you include the attic sq’ with in the attic I know the attic should be conditioned if there is hvac there so I would add it in correct It isn’t conditioned and hvac is there I still need to account for the loss correct

  • @jamesdemarcus1008
    @jamesdemarcus1008 3 місяці тому

    I’ve given this speech to lots of people. I would add if you’re switching to a heat pump air handler that the blower performance charts include the coil. More air because you dropped static by the amount of the furnace split coil pressure drop. Great video.

  • @JOIHIINI
    @JOIHIINI 3 місяці тому

    Hey please!! Need help!! I have a 4 ton heat pump with the return coming from the bottom, it needs to sit on a 13 inch high box to accommodate a 10x30 return drop and the unit is 49 inches tall, so 62 inches total height. My ceiling is 77 which leaves me 14 inches for a plenum and my trunk line is 10 inches tall. I wanted to do an offset to the trunk line to give good air flow but we're talking like 1-2 inches from the bottom of the plenum. Is that a problem? This video is the closest thing I could find to any content discussing this and it mentioned 10 inch minimum which would be impossible even with an 8 inch tall trunk. Let me know please!! Any advice? Am I okay?

  • @walkerdarin2003
    @walkerdarin2003 3 місяці тому

    Thoughts on corrosion grenades?

  • @DavidCasey-u7g
    @DavidCasey-u7g 3 місяці тому

    👍👍

  • @famousdude1239
    @famousdude1239 3 місяці тому

    yack, yack, yack

  • @dm7175
    @dm7175 3 місяці тому

    Dude, where the f#%$ is the vent?

  • @kelleykeffer6249
    @kelleykeffer6249 3 місяці тому

    Your info is great. I’ve been in hvac for 20 years , maybe a touch longer. I started a business a few years ago and it’s went well, but I find myself a much better teacher or coach especially when it comes to field technicians and sales. I’ve been highly considering starting a coaching business or technician training . Like real training with units and dip switches . There’s very few of those anywhere . And the only true way to learn hvac is hands on. And even 20 years later you’re still gonna run into something that just doesn’t make sense . But your info is great

    • @kelleykeffer6249
      @kelleykeffer6249 3 місяці тому

      I guess I’ve found it harder to translate my business into what I was doing for someone else . I averaged around 4 million in sales for almost 5 years straight. Some years more some years less . But avg. I was outpacing the sales guy by quite a bit as a technician. My customers asked for me by name and they knew I wasn’t gonna sell them a unit if it wasn’t the best solution. Or I wasn’t gonna try to up sale them on something they absolutely didn’t need. I would rather find something that would be useful to them. We have high high humidity here where I live and about 85% of the units I run into have biogrowth inside , I found a product that I liked and used myself so I knew it worked and that would be my go too if nothing else was needed at the call. But now that I am in business for myself. And this is my second business . First one was fixing foreclosures for banks. That was years ago. And it just got horrible with all the subcontracting and my pricing went down 500% , I stayed in it too long because I had employees I didn’t want to kick to the curb. But back to the point. I find myself, struggling to do the entire operation and not being in a place to be able to hire out quite yet. I have yet to see anywhere close to the sales numbers I made for the company I worked for before venturing out on my own. I’m comfortable most of the time, But you speaking of those big jobs that turn bad , I’ve had a couple of those , and they hurt . They hurt bad as a small company. Pricing is key , and you’re very right about taking the van home and going to the first call. That stops the 30-45 min shop talk in the morning. And a clean, organized van is absolutely key. Thanks for all the good info

    • @kelleykeffer6249
      @kelleykeffer6249 3 місяці тому

      Being ex military gives me a different aspect on things I guess

  • @larryl22
    @larryl22 3 місяці тому

    Local contractor oversized my heatpump ( I have increase in humidity, my system runs longer, and my evaporator coil truck / supply is always sweating, etc) what can i do now? Need advice. my sqft is 3490, i have 2 zones (upstairs and downstairs) the unit in the basement was replaced with a heatpump.

    • @HVACProBlog
      @HVACProBlog 3 місяці тому

      Thanks for watching @larryl22! I would recommend you find a quality local contractor to complete a load calculation on your home. Based on this, it may be possible to manipulate the airflow low enough to decrease system capacity...this may require a refrigerant charge adjustment as well depending on the type of system. This will not however fix your duct condensation issue. The ducts are below the dewpoint of the air...sounds like you may either need insulation on the supply, dehumidification in a basement (if the ducts are downstairs), or ventilation of your attic (if the ducts are up there)...

    • @larryl22
      @larryl22 3 місяці тому

      @@HVACProBlog can you please recommend a contractor...i live in milford, ma

  • @DavidCasey-u7g
    @DavidCasey-u7g 3 місяці тому

    👍

  • @a.t.701
    @a.t.701 3 місяці тому

    Hi Chris. Thank you so much for all this excellent information. I'm having a very hard time finding anyone explain how to input vaulted ceilings into the various manual J software. Is it as simple as figuring out the equivalent air volume as if the ceiling was flat and inputting that calculated ceiling height? And then inputting the actual ceiling square footage which will be greater than the floor square footage? Also, is there a better way on placement of registers on such ceilings - like one at the very top and one lower closer to the wall, rather than just having one at the lower location? If you could help by sharing your thoughts, that would be so helpful and appreciated.

    • @HVACProBlog
      @HVACProBlog 3 місяці тому

      Hi @a.t.701, thanks for watching! Vaulted ceilings are typically entered into Manual J software as a 'roof/ceiling combination' or a Mansard (if you have a small flat ceiling at the peak). The room height should always be the wall height, and anything above that for volume is added to the ceiling input. The location of supply registers can depend on the application, like a room evenly heats better if on a floor, or more even cooling if in a ceiling. If you have a ducted system that operates heating and cooling, then one will have to be sacrificed - which is usually the season with less run time. So, this is one of the reasons we see a lot of floor registers in New England. I hope this helps!

  • @virgil3241
    @virgil3241 3 місяці тому

    Awesome video. I had a new ac installed a couple summers ago, and unfortunatly, just installed the same size, which is a 3 ton. I could probably of gone with a 2.5 ton instead, since I have done a ton of energy upgrades since the house was first built (I am not the original owner). I could say a lot, but my way around this is to have a temp threshhold of 1.4 degrees more than my set point, so then it gets long run times, The wife doesnt notice and the humidty goes down since the run times are longer. Plus with an Ecobee and all my sensors, I only use the sensors in the warm parts of the house. Is it perfect, no. But with HVAC there is no perfect, since every house and area are different. Even having more family members in a house can make a difference on your cooling, or a young family compared to empty nesters. I range from 40-50% most of the time, so I must be doing something right

  • @VincentHuynh-k4r
    @VincentHuynh-k4r 3 місяці тому

    Hi, thank you for the informative video. You mentioned at 3:54 that when having an ancillary dehumidifier, we can use Option B (+15,000 BTU/H) for anywhere in the United States. Is this still the case in 2024? I'm referencing Manual S Second Edition 1.00 2014, and see that to use option B there are 3 requirements that need to be met: 1. The dehumidifier shall be part of an engineered System. 2. The local degree day ratio shall be 2.0 or more. 3. The AHJ does not provide different Guidance. With those conditions, would it mean that only Nothern parts of the states would be able to use condition B?

    • @HVACProBlog
      @HVACProBlog 3 місяці тому

      Hi @VincentHuynh-k4r! You are correct sir, my mistake! If a home does not have a sensible heat ratio above .95 in a climate where HDD is 2.0 > CDD, then whole home dehumidification can offer the use of Condition B. This would not be available if HDD < 2.0. However, this would most likely mean you either have a load that is larger in cooling (which is how we size heat pumps, to the cooling load), or they are a lot closer to equal - and such an oversizing factor should not necessarily be needed to apply. Also, in the New Manual S v3, you do have the opportunity to size to the heat loss with a heat pump if you install whole home dehumidification to meet 100% of the latent needs. there are a few other caveats, but should clear this up going forward (once published)...

  • @SteveFontaine99
    @SteveFontaine99 3 місяці тому

    Very insightful post, thanks for sharing!

  • @ruff8921
    @ruff8921 3 місяці тому

    What’s decent humidity inside when temps or in the 90s outside

    • @HVACProBlog
      @HVACProBlog 3 місяці тому

      Thanks for watching and reaching out! This depends on what the humidity is outside, basically where you are located. For most of the US, we target 50% RH indoors when we are at design temps. If you are in Miami, likely 55%. Or at elevation or dry climates like AZ, 45%…

    • @ruff8921
      @ruff8921 3 місяці тому

      @@HVACProBlog thanks so much

    • @ruff8921
      @ruff8921 3 місяці тому

      One more question it’s a brand new system had it for week and humidity stays around 57 to 60. I just don’t remember old one being like this. Feels cool but you get up and moving around you get wet. Guess I’m asking does that sound about right to you. Really can’t find any answers online. I have them coming out to look at it again Thursday. Any certain things I can tell them. Thanks man. Your a major help

    • @chiefhokie
      @chiefhokie 3 місяці тому

      @@ruff8921 just chiming in, but I also have a new system and once it had been installed, I could tell it was oversized (went from 2.5 ton to 3.0). Humidity inside the house is consistently about 50-60%. Talked to the installer and he kept giving me the "that's how it's supposed to work", "humidity should be around 50-60%", "it's probably your windows", etc., but I didn't feel any of this humidity with the old system, only with the new one. I guess what I'm trying to tell you is that don't be surprised if your system may be oversized. See if the fan within the inside unit can be slowed down a bit, that may help a bit; it helped me so that my system wouldn't short-cycle as much (runs longer now), but it's not a perfect solution either. Hope that helps.

    • @ruff8921
      @ruff8921 3 місяці тому

      @@chiefhokie thanks bud. Helps forsure. I kinda just chunk it up to the older things were built better,lasted longer and ran better.

  • @patrickhutchins6935
    @patrickhutchins6935 3 місяці тому

    What in hell made you think adding background music would make it better? Was too annoying

    • @HVACProBlog
      @HVACProBlog 3 місяці тому

      Thanks for watching & providing feedback! I received some poor advice early on, and you found an older video. I have since made this correction, with better 4k and audio. Please be sure to check out some of my more recent content?

    • @patrickhutchins6935
      @patrickhutchins6935 3 місяці тому

      You have great content, you don't need music to make your videos rewarding. This was the 1st of yours I tried to watch but I went to your channel and have watched serval more since and have now subscribed. Thanks

  • @ChristianThunder
    @ChristianThunder 3 місяці тому

    HI, are you avaible for a consulatation? You're website won't let me book an appointment with you. Please advise.

    • @HVACProBlog
      @HVACProBlog 3 місяці тому

      Sorry @ChristianThunder , I do not currently offer consultations. If you are an HVAC Professional, I do offer System Design Training and Monthly Q&A on my Patreon Channel as an Elite Member: www.patreon.com/HVACProBlog

  • @ChristianThunder
    @ChristianThunder 3 місяці тому

    Are you available for paid consultation?

    • @HVACProBlog
      @HVACProBlog 3 місяці тому

      Sorry @ChristianThunder , I do not currently offer consultations. If you are an HVAC Professional, I do offer System Design Training and Monthly Q&A on my Patreon Channel as an Elite Member: www.patreon.com/HVACProBlog

  • @-MrRichBiker1967
    @-MrRichBiker1967 4 місяці тому

    Phenomenal, I have never seen a HVAC explained so well and organized like yourself. Hats off to you my man.. you got this down to a science. I sure wished you lived in New York. I have a 1400 ft² house they installed a Rheem 2 ton unit, when really hot doesn't cycle runs constantly.... when cooler runs normal. Think I should have had a two and a half ton what do you think. Thank you in advance and I love you videos

    • @HVACProBlog
      @HVACProBlog 3 місяці тому

      I highly recommend you have a complete Manual J completed with ACCA approved software to verify the size system needed for your home. For example, I have seen a 1200 sqft home in RI that is 40 years old without weatherization need 2.5 tons. I have also seen a new construction home in Wellesley, MA that is almost 5,000 sq for need just 2.5 tons…

  • @CarsSimplified
    @CarsSimplified 4 місяці тому

    Good stuff! That bit about airflow being allowed to pass through the entire filter is definitely something automakers could be paying more attention to with engine air filters. I'm glad my house unit at least has that in mind, since it has a 4-inch-deep MERV 13 filter that looks like it takes a lot of effort to push air through.

  • @johnwhite2576
    @johnwhite2576 4 місяці тому

    If you dont have that 10 inch min when you use a 45degree taper on the 1-D, should you stick with stabbing into plenum to preserve 10 in height, or go with taper and sacrifice soem of theta height to below 10 inches ?>

    • @HVACProBlog
      @HVACProBlog 3 місяці тому

      I would recommend some taper. Just realize it may not be a 10’TEL then. Somewhere between 10-35’ is likely.

  • @ChristianThunder
    @ChristianThunder 4 місяці тому

    Hi Chris, excellent job with these videos. I’m learning a lot, you’re a great teacher! I have a question for you. I recently had new construction built for me and the Manuel J included a Carrier brand system and specs for the report, which is what the Manuel S also included or recommended. But my builder installed a Comfort Aire handler and Rheem condensers. The builders choice of equipment was not included on the Manuel J or S, is this problematic? I am having issues with my upstairs system. It’s running consistently on warmer days and has very poor air flow compared to the downstairs system which is .5 tons larger. I’m thinking they undersized the upstairs unit but I’m a novice with a Manuel J report trying to find the problem. Any advice would be appreciated, and thank you for taking the time to make these informative videos!

  • @JMoney-ne3to
    @JMoney-ne3to 5 місяців тому

    Useful video...but turn down/off the music.

    • @HVACProBlog
      @HVACProBlog 4 місяці тому

      Thanks for watching & providing feedback! I received some poor advice early on, and you found an older video. I have since made this correction, with better 4k and audio. Please be sure to check out some of my more recent content?

  • @phayzyre1052
    @phayzyre1052 5 місяців тому

    The biggest problem with testing and balancing, after everything is said and done it’s generally a waste of money. I used to do HVAC work and worked for a testing and balancing company. After a while, I realized all I was doing was just pi$$ing in the wind! We would go in to a building (sometimes a brand new building) and set everything up to the engineering specifications only to come back and check everything a few months later and see that the customers had completely readjusted everything we did! Some customers would complain they were too cold, others would gripe they were too hot and what would they do? Go in and tinker with the settings, dampers, shut off valves, etc. causing everything to run in efficiently in the process. Of course, the video you have here is good and very informative and I don’t mean to gloss over nor kick what you do to the curb but it’s a lot of money wasted to go through all the hullabaloo of setting something up to come back and have somebody screw it up again!

  • @joecox9958
    @joecox9958 5 місяців тому

    really nice! I need to watch again for the last point. thank you so much!

  • @kamranbeigi9044
    @kamranbeigi9044 5 місяців тому

    The music is louder than the speech. Not suitable for a tecgnical presentation. Would have been OK for an elevator lobby. Could not listen to the end.

    • @HVACProBlog
      @HVACProBlog 5 місяців тому

      Thanks for watching & providing feedback! I received some poor advice early on, and you found an older video. I have since made this correction, with better 4k and audio. Please be sure to check out some of my more recent content?

  • @jamesrecknor6752
    @jamesrecknor6752 5 місяців тому

    Flat rate or fail

  • @jamesrecknor6752
    @jamesrecknor6752 5 місяців тому

    TRUE

  • @eliorios9420
    @eliorios9420 6 місяців тому

    Do you want me to hear the music or do you want me to hear you talk lol😅 I appreciate the information

    • @HVACProBlog
      @HVACProBlog 6 місяців тому

      Thanks for the feedback. You found an older video of mine created when I had some bad advice. I have since dropped the music and improved audio significantly…hoping you will still checkout some of my latest content?!

  • @shirleypineda9726
    @shirleypineda9726 6 місяців тому

    If I have a return air in my wall and with no ducts leading like literally just a return vent and then you see the inside of my walls. Why? My house was built in 1988.

    • @HVACProBlog
      @HVACProBlog 6 місяців тому

      Hi @shirleypineda9726 ! Thanks for watching my content. Although ok at the time (1988), this is using the wall cavity as your return duct and would not meet today's installation codes. The wall cavity is extremely leaky and will be taking more air from unwanted areas, not only from your conditioned space...

  • @omarr.r1448
    @omarr.r1448 6 місяців тому

    Lost a chromosome

  • @TerrenceLP
    @TerrenceLP 6 місяців тому

    Amazing, yet in the wild I yet to see all of this being followed. The combination of making money, time vs speed and the unique challenge of each house... ducting

  • @BadBeanTaco
    @BadBeanTaco 7 місяців тому

    What are you suppose to do when the AH is in the worst spot of a U shaped house so you have to go two directions from the plenum

  • @rvbtx1
    @rvbtx1 7 місяців тому

    Duct velocity and grille/registers velocity are 2 different things.

  • @abazism
    @abazism 7 місяців тому

    Should I go by AF or diluted?

  • @ronniepdagayday
    @ronniepdagayday 7 місяців тому

    how do you get that latent heat. thank you sir..

  • @AttainableHome
    @AttainableHome 7 місяців тому

    This is really excellent, thanks so much for doing this. Learned a ton (no pun intended)

  • @yasiriqbalbuttofficial
    @yasiriqbalbuttofficial 7 місяців тому

    Background music irritating

    • @HVACProBlog
      @HVACProBlog 7 місяців тому

      Thanks for watching. You found an older video, and have since corrected this in my content going forward. Please check out some of my new stuff?