heat pump size calculator

Sizing a heat pump seems like a daunting task. So, constant easy air movement is your friend. Even if you would be living in Canada, that would be too much. If you have higher ceilings, you will need a more powerful heat pump, and vice versa. Some have tried to remedy this by placing mini-splits (or just indoor heads) on each floor, but that way usually only one is needed for cooling and only one is need for heating. As an Amazon Associate we earn from qualifying purchases. square footage): You can see for the heat pump size table that, for example, a 2,000 sq ft house requires around 60,000 BTU or a 5-ton heat pump. Once you determine that, you can check out our article about the best mini-split heat pumps currently on the market here. (Dos/Donts), Convert HSPF To COP: Calculating COP From HSPF Rating (Heat Pumps). About Us | Contact Us | Privacy Policy| Cookie Policy| Terms of Use| Do Not Sell My Info. However, when you figure out all the other factors, including insulation and so on, you will likely see a lower tonnage requirement. ), How Much Electricity (kWh) Do Air Conditioners Use? Im also arranging for a Home Depot HVAC representative to estimate the cost. What do you think. The trouble comes at extremely low temperatures (coefficient of performance (COP) for heat pumps can fall from 3.0 to less than 1.0). Locate your climate zone on the map above and provide your square footage and we'll determine how many BTUs your heat pump should have. They have a 10 HSPF rating and 20+ SEER rating; you can read more about MrCool DIY heat pumps here. When the garage and kitchen are done, you are looking at 1,900 sq ft of 57,000 BTU or about 5 tons. Single Story What Size Heat Pump Do I Need for 1500 Square Foot House? 5 Dripping Split AC Causes, Should You Cover Your Air Conditioner In The Winter? For a rough estimate, its useful to calculate 30 BTU per sq ft of living space (8 ft ceiling height). I dont want to oversize it, but also dont want to find weve installed something that doesnt meet future needs. As you can see, most of these units are 2-ton units; they generate 24,000 BTU of heating output. We may or may not be compensated for purchased you make as a result of our recommendation. Note: In Zones 6 and 7, the coldest zones, a system with an efficient gas furnace and small central air conditioner is also a good option. If you want to be sure your indoor climate will be comfortable all year, then choose a heat pump size near the upper end of the range. Lets convert that to tons and kWs; thats 3.75 tons (about 4 tons) and about 13 kW. Lets see if the Heat Pump Size Calculator also gives us the 75,000 BTU result for a 2,500 sq ft home: The calculator confirms that our manual calculation was correct. Hope this helps a bit. Hope this helps. I am planning to use concrete filled ICF forms that have R22 rated and have 2400 sq ft main floor and 1200 sq ft daylight basement (one side only), with 9.5 ft ceilings, in zone 4. (Out Of Vents Temperature), How Much Does It Cost To Run A Mini Split? Always remember that for adequate sizing, you would need an HVAC expert that does the on-site sizing. If you are in the market for a heat pump, you can contact vetted HVAC experts in your area using this form here. We have shut down our 96% efficiency gas furnace and have disconnected from the gas grid. The average rating would also apply to a home built before 1990 with some energy efficient updates in place such as added insulation or better windows. So, at 450 sq ft and 16 foot ceilings I get 27,000, but 750 sq ft with 8 foot ceilings I get 22,250. If youre more familiar with heat pump sizing by the ton, this Heat Pump Sizing Chart will help. The size upgrade for such a home makes more sense. Any help calculating here would be great. Then, let electric resistance heat make up the balance, during those rare extreme times when the heat pump efficiency is lowest and is not going to save significant energy/cost anyway. The heat pump size calculator is accurate. Basically, given the premises we specify in the article, you are looking at 49,500 BTU or about a 4-ton mini split. Hello Fergus, thats quite a lot of office space. Do not design for the traffic jam those few coldest hours of the year. i am looking at mini splits heat pumps. You could call your local HVAC company and get a guy to calculate that for you on-site. But I feel I should have a 4 or 5 ton at a much higher seer. For a 1,514m2 (16,297ft2) office space, you would about 20 of these. Heat pumps are not furnaces and heating systems that use them need to be designed with different priorities. Our recommendation for homeowners in those cold regions is to skip the heat pump. They will provide free estimates at no cost or obligation to you. Ours single mini-split is upstairs, in our office loft, over our cathedral ceiling living room. For example, a room 24 feet long and 15 feet wide is 360 square feet. This is primarily a mini-split heat pump size calculator but can be used to roughly estimate the size of ground-source or even water-source heat pumps. Lets boil these 8 factors down into 1 simple rule of thumb: Some of the factors in Manual J cancel each other out. A single 60,000 BTU (5 ton) central heat pump or 48,000 BTU (4 ton)mini split heat pumpdoesnt have enough capacity to do the job in summer. Poor:Your home is old and hasnt been updated. Im interested in exploring whether its worth it to replace the A/C with a 75,000 BTU heat pump (according to your calculator) which would provide air conditioning as well as heat up to a certain point at which the gas furnace would take over in more extreme temperatures. The most exact way to estimate the tonnage, however, is exactly as you did; if the neighbor has the same size home and a 4-ton unit is sufficient, go for that. 2700 sq ft home, 9 feet ceiling downstairs in kitchen, living room, and dining room, cathedral ceiling family room 1425, with vaulted foyer 1616, 2stories. (Central, Mini Split). (Per Month Calculator), Evaporative Cooler Chart (Humidity, Efficiency, Temperature Swamp Coolers), To demonstrate how Heat Pump Size Calculator works, well. (Or How Much Is Left? Hello Paul, very smart to get at least a sense of how many BTUs/tons you need before the HVAC professional arrives. (Serial Number), Carrier HVAC Age: How To Tell AC Or Furnace Age? How do I calculate what size heat pump do I need? We can use this simple rule to create the Heat Pump Size Calculator: Another key parameter is the ceiling height. That is the right thing to consider; however, it does seem that anything over 70,000 BTU would be a bit too much. The key determinant of how big a heat pump you need is how big your house is. Hello Patrick, those R-23 and R-29 insulations are very useful and will decrease the heating output you need to warm your home. Or would multiple units be required? Windows and doors are drafty, and some rooms are colder than the rest of the house in winter and hotter in summer. So, am I going about this wrong? Our very high efficiency, low-temperature (-22F) mini-split puts out its rated 12000BTUs at 5F and the vast majority of the winter it far exceeds that capacity. We save 20% on our electricity by getting it from a local Community Solar farm. You can simply convert that into: Note how to make the estimate even more precise: If you live in the cold north (Canada, Illinois, Minnesota), it makes sense to add up to 40% to the total output heat pump capacity calculated by the Heat Pump Size Calculator. This is fairly simple too. Very interested to see the actual sizing by the professional. At What Temperature Does A Heat Pump Stop Working? Hope this helps a bit. (Example 2), EPAs rule of thumb for sizing air conditioners, our article about the best mini-split heat pumps currently on the market here, vetted HVAC experts in your area using this form here, Understanding EER: Energy Efficiency Rating For AC Explained, Amp-Hours To Watt-Hours (Ah To Wh): Calculator + Chart, Convert Watts To BTU: Calculator + Conversion Chart (1 W = 3.412 BTU), Wire Size For 60 Amp Breaker: Which AWG Wire To Use? We can use inexpensive electric resistance heaters to increase output during those few hours of the year. Its possible; the real question is if the central heating system wouldnt be a better solution. However, at some point we are going to add 500sq ft with a garage/basement conversion and another 300sq ft kitchen addition, but well be converting from gas before we do that. = 4.5 x CFM x h (std. Based on the heating output of that heating source and the size of your home, the Daikin installer will try to choose the most optimum heat pump size. My home is approximately 2,000 sf. Usually, if you have 2 separate spaces, you would need a 2-zone mini split because the airflow from just 1 air handler cannot adequately propagate (along with the warm air) to the other room. The dual heat pump and furnace systems are preferred because the heat pump does all of the cooling and most of the heating (the furnace comes on just at very low winter temperatures). If you convert that into kW, thats a 22 kW heat pump. What would you do? Our heat pump sizing calculator gives you the amount of heating and cooling you need for your climate. ft. requiring a 12,000 BTU mini ducted heat pump. Mini-Split Heat Pump Size (1,500 sq ft) = 1,500 sq ft * 30 BTU per sq ft = 45,000 BTU. If you can disconnect from their gas grid, you immediately have nearly a $300 head start over when you were using gas. Here is the calculator: Using this calculator, everybody can roughly estimate what size heat pump they need. Should I replace the current A/C and furnace with a dual heat pump and furnace or continue with a new A/C and furnace? It also makes them a lot noisier. Air Purifier Room Size Calculator: What Size Air Purifier Do You Need? The bigger the house, the bigger the heat pump you need, right? Our town houses have bungalows under them as well. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. What size heat pump do I need for a 2500 square foot house? If you supply heat and AC to the basement, include the square footage. This explanation will give you confidence youre putting the right information into the heat pump sizing calculator in case you have concerns about how to do it. (4 Hoseless Methods), How Cold Should An Air Conditioner Blow? So, total sq ft including the loft is about 750 sq ft, but the loft and the bottom level (450 Sq ft) are open to each other. That will likely save you about 40% of AC and heating costs. That means, for example, that for a 1,000 sq ft home, you would require a 30,000 BTU heat pump (thats a 2.5-ton heat pump). Type in the number of square feet in your home all heated and cooled areas. The answer is to determine how many total BTUs of heating and/or cooling you need, and to figure the best way to divide up your home into two zones, each served by a separate heat pump. A sunny home in summer and a fully shaded home in winter will need more heat pump power. Currently has a 5-ton AC and 125,000 gas-furnace 90%+ which were installed in 1996 and need replacement. A simple rectangle is easiest. We are extensively remodeling our house, but have not yet done most of the insulation upgrades. The details of home size are the same as what we say on our Gas Furnace Size Calculator page. Lets look at how HVAC experts size a heat pump: Every HVAC expert calculates what size heat pump you need using the same set of principles. New AC and furnace doesnt have that advantage; the cooling costs will be the same as with the dual system but the heating costs with separate AC and furnace will be much higher. You would need about 75,000 BTUs. Will this reduce my needed BTU calculations? Hello Roger, the single most important factor that decreases the required BTU load is good insulation. But we provide additional information for a more thorough understanding of heat pump sizing and quick references for common questions like: Here is the top-rated heat pump size calculator from the pros at Pick HVAC. Renewable Energy Educator We usually have the heat on for six months in the year, and from our gas bill I estimate current we use about 30-35 Therms/month of gas for heating in December and January, and 120 Therms total for the year. air), Sensible Heat (BTU/hr) = 1.1 x CFM x t (std. My home is a standard ranch style home with three bedrooms, 1.5 bathrooms din/kit. (Living room / dining room 625 SF, a master bedroom 234 SF and 2 smaller bedrooms 1bout 140 sf each.). Hello Allen, theoretically you would need about a 6-ton unit. We are going to simplify how to calculate what size heat pump do you need. Even in Utah, youre might be looking at 30 BTU per sq ft; that would mean you need less than 10 tons. It can cost twice as much but only works maybe 10% better. So you are looking at 1,142 30 BTU/sq ft = 34,260 BTU or about 3 ton heat pump. Should I use a heat pump for heating in Zone 6? Main floor is 9 ceiling at 1747 Sq/Ft with R-29 insulated walls. Our house is 1100sq foot, in the Bay Area, mild climate, 1950s build, recently fairly well insulated but not nearly as well as new construction could be. Quite possibly, it has a SEER rating (cooling) below 14 and an HSPF rating (heating) below 8. This is much lower than the 30-50k BTU range from the rule of thumb. Variable Speed, What is Auxiliary Heat? Thats 1,500 square feet. HSPF5 Vs HSPF4: Why 2 Heat Pump Efficiencies On Specs Sheets? Secondly A method that also yields an accurate calculation is to measure the footprint of your home. And there is an addition or extension that is 25 x 20, or 500 square feet. Should a heat pump be calculated on the size of the house or the size of the space to be heated / cooled? Rene has worked 10 years in the HVAC field and now is the Senior Comfort Specialist for PICKHVAC. Pretty simple. Perfect for heat pump installation. Now, the HVAC professional will take into account the installation R-values. Average:Your home is vintage 1990 to 2010, and not much has been done to make it more energy efficient. Hello Larry, this is quite a common dilemma. Lets solve two examples to illustrate how you can calculate what size heat pump you need manually and via the calculator: Lets say you have a bigger 2,500 sq ft home and you want to buy a heat pump for it. Lets say the main body is 50 x 30, as in the example above. Given your layout, you could go with 18,000 BTU air handler in the living room / dining room, 9,000 BTU air handler in master bedroom and 2 smallest 6,000 BTU units in each of the bedroom. Mitsubishi and Gree make great heat pumps, for example, with a 20+ SEER rating (very energy efficient). What I recommend instead is to (at least at first) use a single mini-split and a vertical duct with a high efficiency fan, to destratify (even out) the temperature between floors. It really helps other visitors to estimate the cost of a new HVAC unit. Hope this insight helps. Hathaspace Smart True HEPA Air Purifier Reviews, 4+6 Best Whole-House Dehumidifiers In 2022 (Ducted, Portable), 4 Quietest Dehumidifiers (Best Bedroom Dehumidifiers): 52.1 dB Or Lower, How HVAC Experts Calculate Heat Pump Size (Using Manual J), How To Approach Heat Pump Sizing On Your Own? The advantage the loft and cabin are open to each other offers you is this: You can use a 1-zone mini split for the whole place. 30 BTU of heating output per 1 sq ft of living space. Hope this makes sense. It runs down through closets, so was a very easy installation. If we take a general approach for well-insulated building and use the 30 BTU per sq ft rule of thumb, you would need a 77,970 BTU (about 6.5 tons) heat pump for your combined 2599 sq ft home. If you check the concrete R-value, its quite low, however. That will enable everybody to roughly estimate the size of the heat pump (be it a mini-split heat pump or ground-source heat pump). SEER = (1 EER100% + 42 EER75% + 45 EER50% + 12 EER25%)/100, Total Heat (BTU/hr.) What Size Heat Pump Do I Need for 2000 Square Foot Home? For exact measurements, you have two options that will work well enough. When there are 6 or more corners on the house, the calculation is a little trickier. However this seems low to me. Properly sizing a heat pump is essential for it to efficiently do its job. An HVAC expert is required on-site to map out your home, determine heating/cooling needs, and so on for a specific situation you have. See ourCentral Air Conditioner Guidefor full details on your options, sizing and cost. As far as the brand is concerned, it might be best to ask a Home Depot representative. Thanks. What Temperature To Set Air Conditioner In Summer: 72, 75, 78F? The information works for heat pump sizing too. Save my name, email, and website in this browser for the next time I comment. This rule is akin to the EPAs rule of thumb for sizing air conditioners and it also relates to the heating BTU calculator. We rely on readers like you to share your HVAC system cost or quote. Hope this estimate helps. Here are heat pump sizes in tons and BTUs, so youll know what size to select. Hello Learnmatics, Ill of course go through a professional, but Im trying to estimate roughly what size Id need so that Im going into the process with a ballpark estimate. Glad to see you mentioning GREE (Mr Cool, too). One winter family came for a sleep over and dinner, etc. If its a two-story with that footprint, double the calculation to 3,000 square feet. In your case, you can just pick 1 big mini split, something like this MrCool 36k unit that you can DIY installation. What size heat pump do I need for a 2000 sq ft home? We can confirm this manual calculation using the mini-split heat pump sizing calculator: As you can see, the heat pump BTU calculator produces the same result: 45,000 BTU. air), Latent Heat (BTU/hr) = 0.69 x CFM x gr. In your case, you are not looking at 2,000 sw ft; you are looking at those 1,142 sq ft. You now have a known square footage and 8 ft ceiling height, thats great. The heat sizing here can serve as a rough reference. So, you are looking to have a combined heating output (heat pump + furnace) of at least about 30 BTU per sq ft or 39,000 BTU total for a 1,300 sq ft space (8 ft ceiling height). Try to beat that with fossil fuels! With a mini split heat, you will likely lower the cooling and heating costs quite a bit. Too big or too small, and energy will be wasted, and your electric costs will be too high.

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