What size gas furnace do I need?

Answer New, more efficient furnaces and advances in load calculation techniques have changed the way furnace sizes are determined. Having the wrong size furnace can lead to high energy costs and low comfo... Read More »

Top Q&A For: What size gas furnace do I need

What size furnace filter is used for a Honeywell furnace?

Honeywell furnace filters come in a range of sizes depending on the size of your furnace. Honeywell filter sizes are 16 inches by 20 inches, 16 inches by 25 inches, 20 inches by 20 inches, 20 inche... Read More »

How do I calculate furnace size to the size of a home?

Calculate Square FootageMeasure the number of square feet of your home that need to be heated by the furnace. Include hallways, closets and the basement if it will be heated. Alternately, you may a... Read More »

How do I calculate furnace btu size?

Calculate Square FootageMeasure how many square feet of space you need to heat in your home by measuring the dimensions of each room and hallway. Multiply the length and width of each room to find ... Read More »

How do I size a floor furnace?

Calculating Floor Furnace SizeDetermine the size of floor furnace you need by using the Manual J Load Calculator. (See references.) The reference language leans toward air conditioning but the prin... Read More »