Quick Answer: What Size Furnace Do I Need For A 1200 Sq Ft House?

How many BTUs do I need for a 1200 square foot house?

STEP 1: Determine how many BTUs of heating and tons of AC you needHouse Square FootageBTUs Needed500 – 70014,000700 – 1,00018,0001,000 – 1,20021,0001,200 – 1,40023,00010 more rows.

How many square feet will a 80000 BTU furnace heat?

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

How do you calculate BTUs needed?

Multiply your square footage by 30 BTUs to find out what capacity furnace you need. Alternatively, if you live in an older home in Zone 6, multiply your square footage by 60 BTUs to ensure you purchase a furnace with enough capacity to heat the space.

Can a furnace be too big?

Having a furnace that’s too big for your space is extremely inefficient. There are two simple signs that indicate that your furnace is most likely oversized: Your furnace runs for a short period of time before shutting off. Your home has uncomfortable hot and cold rooms.

How many BTUs do I need to heat 1000 square feet?

20,000 BTUsTo determine the number of BTUs per square foot that you need to heat a room, simply multiply the square footage by 20 BTUs per square foot. For example, if a room has 1,000 square feet, you would require 20,000 BTUs to heat it.

How many square feet will a 100000 BTU furnace heat?

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.

How do I choose the right size furnace?

Calculating Your Basic Heating Needs You’ll want to multiply your home’s square footage by the recommended heating factor to obtain the furnace output rating you’ll need. For example: If your home is 2,400 square feet and you figure 35 BTUs per square foot, you’ll need a 84,000 BTUH-capacity furnace.

How much does a 60000 BTU furnace cost?

Natural Gas Heating System Prices by BTUFurnace Size (BTU)Typical Furnace Cost with Installation*50,000$2,300 – $3,80060,000$2,500 – $4,20075,000$2,700 – $4,60080,000$3,000 – $4,9003 more rows

How many BTUs do I need for a 2000 square foot house?

60,000 BTUsA 2,000-square-foot house would require 60,000 BTUs at the lower figure, or 90,000 at the higher.

How many square feet will a 75000 BTU furnace heat?

A 75,000 BTU heater can heat a room of between 1,900 and 3,700 square feet in a cold climate if there is little to no insulation. In more temperate climates the heater fares better, heating an uninsulated room of any size from 2,400 to 4,600 square feet.

How many BTUs do I need to heat 1500 square feet?

Reference a furnace size chart. A 1,200-square-foot home will require between 35,000 and 75,000 BTUs. 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.

Is it better to undersize or oversize a furnace?

An undersized furnace will work fine for the majority of the time, but every once in a while it won’t get the house quite as warm as desired. … An over-sized furnace will keep the house warm no matter how cold it gets outside, but it does so at a cost. First, it will probably make the house less comfortable.

How many BTUs do I need for 600 square feet?


How many square feet will a 40000 BTU furnace heat?

BTU ChartsDetached Home Area [sq ft]*Furnace Output [BTU/hr]up to 1300 sq ft40,000 BTU/hr50,000 BTU/hr1300 to 1700 sq ft45,000 BTU/hrup to 55,000 BTU/hr1700 to 2500 sq ft55,000 BTU/hrup to 65,000 BTU/hr2500 to 3500 sq ftup to 65,000 BTU/hrup to 80,000 BTU/hr3 more rows

How many square feet does a 60000 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.

How many BTUs does it take to heat a 1400 square foot house?

Size and Ceiling HeightArea To Be Cooled (square feet)Capacity Needed (BTUs per hour)1,000 to 1,20021,0001,200 to 1,40023,0001,400 to 1,50024,0001,500 to 2,00030,00010 more rows

How many BTU is 2400 square feet?

For example, if the bedroom and office area zone is 1,800 square feet and the living areas and kitchen are 2,400 square feet, add together the recommended BTUs for each. You’ll need between about 180,000 and 280,000 total BTUs for your home based on the climate and house factors considered in the calculator.

How many BTUs do I need to cool 500 square feet?

Window Air Conditioning Chart100 Sq. Ft.5,000 BTU200 Sq. Ft.7,000 BTU300 Sq. Ft.9,000 BTU400 Sq. Ft.10,500 BTU500 Sq. Ft.11,500 BTU2 more rows•Jun 15, 2020

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