http://www.oasiscooling.com/blog/furnace-size-estimator/

Sep 27, 2018 ... Looking to get a new furnace HVAC system, but not sure what size you need? ... As you can see, the BTU usage recommended for each house size is ... If your calculator does not have a pi (π) function, use the number 3.14.

https://www.alpinehomeair.com/hc/calculator/heating_estimator.cfm

The heating capacity of a furnace is measured in thousands of BTU (British Thermal ... This is the proper and scientific method for calculating AC size taught to ...

https://www.acdirect.com/gas-heat-learning-center-furnace-sizing-calculator

If the furnace you selected is more than 10% below your heating requirement, we suggest you go up to the next size. A little under sizing or over sizing is fine, ...

https://www.furnacecompare.com/perl/estimate_heat_loss.pl

Sizing Calculator ... What type of equipment do you need to size? ... " Superinsulated" house with R-24 wall insulation, R-40 in ceilings, and R-19 in floor; ...

https://hvacdirect.com/sizing-air-conditioner-and-heater.html

... help you find the correct size for your air conditioner or furnace for your home. ... For instance, one of these methods is a Residential Load Calculation. ... At this point you will have arrived at your approximate heating capacity requirement.

https://www.calculator.net/btu-calculator.html

Two free calculators estimate the number of BTUs needed to cool or heat a room or house based on its size, insulation, and the geographical climate, among ...

https://www.wikihow.com/Calculate-BTU-Per-Square-Foot

... per hour per square foot to heat your house adequately. ... Furnaces are rated not by the actual BTU ...

https://homeguides.sfgate.com/estimate-gas-furnace-size-20739.html

Dec 29, 2018 ... The home's climate also determines the size of the furnace. A Northern California home with mild winters requires less heating power than a ...

https://www.staycomfy.com/blog/furnace-size-calculator

Of course, heating capacity needs vary by climate, so the following rules-of thumb ... Calculating your expected furnace capacity is a great idea while you're ...

https://www.hunker.com/12613355/how-big-of-a-furnace-do-i-need-for-a-1600-square-foot-house

Jul 30, 2018 ... When calculating the size of a new furnace, many factors must be considered. The square footage of a house is one important factor. Another is ...