How do I determine what size furnace I need?

How do I determine what size furnace I need?

How to Calculate the Right Size Furnace

1. Calculate the square footage of your home.
2. Find out What Climate Zone Your Home Is In Climate is another factor that helps determine how many BTUs you need to heat your home.
3. Multiply your square footage by 40, the lower number recommended for the climate zone.

How many square feet will a 80000 BTU furnace heat?

80 X 1,000 square feet = 80,000 BTUs.

How many square feet will a 60 000 BTU furnace heat?

A standard that is used by heating and cooling equipment companies is to provide at least 25 to 30 Btu of heat per square feet in the home for a moderate to warm climate. A mid-sized home of 2,000 square feet would need approximately 50,000 to 60,000 Btu to heat it properly.

What size furnace do I need for a 1500 square-foot home?

A 1,500-square-foot home will require between 45,000 to 90,000 BTUs. A 1,800-square-foot home will require between 55,000 to 110,000 BTUs. A 2,100-square-foot home will require between 65,000 to 125,000 BTUs.

Can a furnace be too big?

Oversized furnaces can wreak havoc on your entire HVAC system, indoor air quality, and budget. Furthermore, it is expensive to operate a furnace that is too large. Your monthly energy costs will increase. Also, a system that is too large will require more repairs than one that is properly sized.

What happens if furnace is too big?

An Oversized Furnace Causes Your System To Short Cycle When you have a heating system that is too large, your thermostat will read a higher temperature. Consequently, your furnace will turn off too soon to heat the rest of your house. Short cycling will also increase your home heating costs.

What size Furnace do I need for my home?

However, there are basic “rule-of-thumb” estimations to help select the proper size for your home. In colder climates, you’ll want a furnace that generates 40 to 45 BTUs per square foot. At this amount, you’ll need 100,000-112,500 BTU furnace to heat a home of 2,500 square feet.

What size Furnace do you need?

The size of furnace you need depends mainly on the size of your home. As mentioned, a typical home in Modesto is 1500 square feet. Generally in a Californian climate you will need 25-30 BTU per square foot.

How many BTU in a furnace?

Average BTU Ratings. A typical furnace is rated at 100,000 or 80,000 BTU per hour, but furnaces might be as small as 40,000 or as large as more than 200,000 BTU.

How many BTU per sq ft?

How to Determine the Btu You Need. Depending on your region, you may need a different Btu per square foot in your home to keep it at a comfortable temperature. In climate zone 1, which occupies much of the southern part of the United States and parts of Arizona, Nevada, New Mexico and California, you should have 30 to 35 Btu per square foot of home.