installing multiple single-zone Ductless heat-pump systems, in our Mini Split DIY installation guide. This value is most useful for figuring out which type of Ductless Mini-Split system to use.Īdditionally, we discuss the PROS & CONS of using a multi-zone vs. If you plan to use a Central AC + Warm Air Furnace (ducted) system, or a Boiler for heating, the number of zones is not very important in terms of estimating heat load. Step 3 (Rooms / Zones): Enter number of Rooms/Zones where you want a new Heating/Cooling system installed. This step is Critical for accurate estimation of annualized heating/cooling loads of your HVAC systems! If you leave all settings as default, and only change the Region from 1 to 5 and back, you will see a huge change in Cooling/Heating BTU load. Step 2 (Area Size): Enter square footage for your house/building or a specific area, for which you are doing the calculations. If you live TX, select Region 5 (red), etc. For example, if you live in NYC or NJ, select Region 3 (yellow). Step 1 (Climate Region): Select your Climate Region, using the Region Map at the top on the calculator. Otherwise, you may end up with a system that is too big or too small. This tool brings you as close to a complicated Manual J estimation as possible. It is important that you enter accurate/appropriate details into the BTU calculator. How Get An Accurate HVAC Load Calculation HVAC System Installation Cost Estimate: the tool will estimate total installation price for your new HVAC system, which is based off equipment cost, and national average labor + overhead + profit, that plumbers/HVAC contractors charge for each type of system. The calculator’s algorithm will select the full size system(s) and the smallest needed system to cover the rest of required BTU load, to give you most cost efficient estimate. ft.), and specifying largest possible BTU lead HVAC system(s) and then the smallest size system for the remainder of the total BTU load.įor example, if your heat load is 150K BTUs, and maximum residential Central AC size is 60K BTUs (5 Ton) then you need two 60K BTU compressors and a 30K (2.5 Ton) system. Multiple heating/cooling systems: Another important feature of our calculator is the ability to estimate the cost of multiple heating / cooling systems being installed in large homes ( over 3000 sq. We also recommend that IF you plan to use the results of this heat load calculation for making your purchasing decisions, you SHOULD verify the results with this long-form Manual J online estimator. Savings in energy cost savings for both cooling & heating can be as high as 15-25%! PRO TIP: Improving home insulation (in walls and attic), and sealing/insulating your air ducts, will have a significant effect on the BTU load of your cooling / heating system. This is where our new algorithm can make an intelligent recommendation, which includes both system capacity (for heating & cooling), appropriate system type, and energy/fuel costs. While there are a few BTU heat load estimators available online, many homeowners are still unsure which heating and cooling system is best for them. Why Use A Heat Load Calculator, and How you Can Save on Home Heating Most online tools give you a higher heat load estimate than you actually need for your home to sell you more expensive equipment. We use a proprietary BTU calculation algorithm, that DOES NOT over-specify the unit capacity.
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