What size furnace do I need for 1200 sq ft

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.

How many BTUs do I need to cool 1100 square feet?

Area To Be Cooled (square feet)Capacity Needed (BTUs per hour)550 to 70014,000700 to 1,00018,0001,000 to 1,20021,0001,200 to 1,40023,000

What size furnace and AC do I need for a 1000 sq ft house?

House Square FootageBTUs Needed700 – 1,00018,0001,000 – 1,20021,0001,200 – 1,40023,000

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

Area = 40,000 BTU / 40 BTU per sq ft = 1,000 sq ft In a standard climate, 40,000 BTU is enough to heat a 1,000 sq ft area.

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.

What size furnace do I need?

House Size (Sq Ft):Furnace Size (in BTUs):Furnace Size (in Tons):2800 sq ft home126,000 BTU furnace10.5 tons furnace2900 sq ft home130,500 BTU furnace10.9 tons furnace3000 sq ft home135,000 BTU furnace11.3 tons furnace

How much is a furnace for a 1200 square foot house?

Cost of a Furnace for a 1,200 Sq. ft. home is between $700 and $2,200. This assumes you are using an electric unit in zone 2 or another type in zone 4. Having a home in a warmer or colder climate could impact the unit size.

How many square feet will a 70000 BTU furnace heat?

Furnace CapacitySquare Footage(Hot Climate)Square Footage(Cold Climate)70,000 BTU2,320 sq ft1,270 sq ft80,000 BTU2,650 sq ft1,450 sq ft90,000 BTU3,000 sq ft1,630 sq ft100,000 BTU3,320 sq ft1,810 sq ft

Do you count the basement when sizing a furnace?

When including a finished basement, use 1/2 of the finished basement square footage with the rest of the area being calculated. mobile homes. In determining a furnace that is right for your needs you will need to determine the direction in which the heated air flows or is discharged from the furnace.

Is a higher BTU furnace better?

A heater with a higher BTU rating is more powerful — that is, it has a higher heat output — than one with a low BTU rating. It can do more to raise the temperature in your room each hour, so you can either heat a room more quickly or heat a larger space.

Article first time published on

How many BTUs do I need for a 1000 sq ft garage?

Size Of Garage:Warm Climate (30 BTU per sq ft):Average Climate (45 BTU per sq ft):2-Car Garage (500 sq ft):15,000 BTU22,500 BTU3-Car Garage (750 sq ft):22,500 BTU33,750 BTU4-Car Garage (1,000 sq ft):30,000 BTU45,000 BTU

How big of a furnace do I need for a 1500 sq ft house?

Generally in a Californian climate you will need 25-30 BTU per square foot. BTU is a measurement of a furnace’s heat output. 1500 sq feet by 25 BTU gives us a 37,500 BTU furnace.

What BTU furnace do I need?

All you have to do to find out what capacity furnace is best for your home based on its location is to multiply the square footage of the space by the heating factor. For instance, if you live in Zone 2 and have a 1,200-square-foot home, multiply 1,200 by 35-40 to get a BTU range of 42,000-48,000.

How many tons is 1200 square feet?

Area (Square Feet):BTUTonnage600 sq ft12,000 BTU1 Ton900 sq ft18,000 BTU1.5 Tons1,200 sq ft24,000 BTU2 Tons1,500 sq ft30,000 BTU2.5 Tons

Can my furnace be too big for my house?

If your furnace is too large for your HVAC system to accommodate, the entire system will begin to have problems. Not only is this a problem for your health and heating, but it may also eventually end up costing more than you counted on paying. Your heating system will not last as long as it is expected to.

What happens if your furnace is too small?

Too Small. Having a furnace that is too small for your home means the system won’t be able to keep up with the dropping temperatures outside. They simply can’t make up the difference to heat your home properly. … When furnaces are too small, they’ll have to kick on often—or even non-stop—try to increase your indoor temp.

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 much should a new gas furnace cost installed?

Installing or replacing a furnace costs between $2,796 and $6,742 with an average cost of $4,640 including materials, equipment and labor. Replacing a gas furnace runs from $3,800 to $10,000 or more for high efficiency models in complex installations. Electric models run slightly less at $2,000 to $7,000.

Can you install a furnace yourself?

Yes, you can. However, there are a number of issues to explore before you make the decision to buy and install a new furnace yourself. With the exception of a few cities and counties with strict installation rules, homeowners around the country are free to purchase and install their own furnace.

Is it cheaper to replace furnace and AC together?

While it is always necessary to replace both air conditioning components at the same time (in a split system), it’s not always necessary to replace both AC components and the furnace. … Adding a furnace during your air conditioner replacement will cost a lot less, around $1,000 to $3,000.

What is the smallest furnace you can buy?

The Chinook has the smallest footprint of all gas furnaces in the industry and is available in 1-stage, 2-stage, 2-stage ECM and Modulating versions with lowest range capacities from 6,000 BTU up to 120,000 BTU.

What are the different furnace sizes?

Common furnace sizes include 80,000 BTUH, 100,000 BTUH and 120,000 BTUH. Furnace sizes are always going to be in 20,000 BTUH increments.

Do you include basement in square footage for heating?

Basements and usable square footage It’s not usable, so don’t include it in square footage. To be considered “living area,” a home’s rooms must meet certain criteria — including the basement. Height clearances, whether it’s heated, and the presence of windows: all of these make a space livable.

How many square feet will a 100 000 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 many ton AC do I need for 1100 square feet?

ZONE 1ZONE 51.5 Tons600 – 900 sf700 – 1100 sf2 Tons901 – 1200 sf1101 – 1400 sf2.5 Tons1201 – 1500 sf1401 – 1650 sf3 Tons1501 – 1800 sf1651 – 2100 sf

What is the difference between 1 stage and 2 stage furnace?

A furnace with single-stage heating contains a fixed gas valve and a single-speed blower motor. … A model with two-stage heating contains a two-stage gas valve and a variable-speed blower motor. This allows the furnace to run at a lower setting in milder weather and a higher setting in very cold weather.

What happens if you have too much BTU?

A unit with too many BTU’s, will cool the room fast, but leave the room humid. Too few BTU’s will never cool the room down and the unit will run incessantly. To be sure you’re making the right decision, call us to get answers about air conditioner sizes and efficiency.

How many square feet will 18000 Btu heat?

Calculating the number of BTUs needed to heat an area For example, a 300 square foot room typically requires 7,000 BTUs to maintain a comfortable temperature, while a 1,000 square foot room requires 18,000 BTUs.

Can I heat my garage with my home furnace?

If you have a forced air furnace in the home, then the easiest and least expensive way to heat an attached garage is by extending the duct system to supply warm air to the garage. Although this may be easy and cheap, it may not be the right answer for most homes.

Is it expensive to heat a garage?

A 45,000 BTU forced air heater is typically large enough for a large two-car garage, but this can depend on variables like climate, ceiling height, and insulation. Assuming you’re using electricity, and your price per kWh is 10¢, running your heater for 8 hours will cost about $10.50.