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Warmer climates along the southern part of the United States – considered Zone 1 or 2 – require 30-40 BTU per square foot. The middle part of the country – Zone 3 and 4 – require between 40-45 BTU per square foot, while the northern areas of Zone 5 need up to 60 BTUs per square foot.
How many BTUs do I need to heat 1500 square feet?
A 1,500-square-foot home will require between 45,000 to 90,000 BTUs.
How many BTU of heat do you need per square foot?
The general rule of thumb is that you need between 30 and 60 BTUs per square foot, depending on your climate.
How many square feet will a 80000 BTU furnace heat?
How Many Square Feet Will 30,000 – 120,000 BTU Furnace Heat? Furnace Capacity Square Footage(Hot Climate) Square Footage(Cold Climate) 80,000 BTU 2,650 sq ft 1,450 sq ft 90,000 BTU 3,000 sq ft 1,630 sq ft 100,000 BTU 3,320 sq ft 1,810 sq ft 120,000 BTU 4,000 sq ft 2,180 sq ft.
How many BTU furnace do I need for a 2000 square foot home?
An average 2,000-square foot home will need between 80,000 and 115,000 BTUs to heat efficiently.
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.
Can a furnace be too big for a house?
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.
How many BTUs do I need to heat my house?
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. A simple formula to determine your heating needs is: (desired temperature change) x (cubic feet of space) x . 133 = BTUs needed per hour.
How many BTU do I need for 3500 square feet?
157,500 BTU Home Size (Heating): Standard Climate Very Hot Climate 3,500 square feet 157,500 BTU 105,000 BTU 4,000 square feet 180,000 BTU 120,000 BTU 4,500 square feet 202,500 BTU 135,000 BTU 5,000 square feet 225,000 BTU 150,000 BTU.
How many BTUs do I need for a 1600 sq ft house?
How many btu do I need to heat 3,000 square feet? Room/Area Size Heating Capacity(BTU) 1,400 sq ft 63,000-77,000 BTU 1,500 sq ft 68,000-82,000 BTU 1,600 sq ft 72,000-88,000 BTU 1,700 sq ft 77,000-93,000 BTU.
Is it better to undersize or oversize a furnace?
Heating systems should never be undersized to prevent discomfort when outdoor temperatures or weather conditions exceed the capacity of the heating source. Although over sizing a heating system can be equally uncomfortable if grossly oversized which can cause large temperature swings and frequent cycling.
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.
What size furnace do I need for 1400 sq ft house?
STEP 1: Determine how many BTUs of heating and tons of AC you need House Square Footage BTUs Needed 1,000 – 1,200 21,000 1,200 – 1,400 23,000 1,400 – 1,500 24,000 1,500 – 2,000 30,000.
How big of a house can 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 big of a furnace do I need for a 2500 sq ft house?
Determining the Square Footage 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 I need for 1700 sq ft house?
Chart For Furnace Tonnages And BTUs For 500 – 3,000 Sq Ft Houses House Size (Sq Ft): Furnace Size (in BTUs): 1500 sq ft home 67,500 BTU furnace 1600 sq ft home 72,000 BTU furnace 1700 sq ft home 76,500 BTU furnace 1800 sq ft home 81,000 BTU furnace.
Is a higher BTU furnace better?
In a heat pump or furnace, the BTU number refers to the heat output of the particular unit. The higher the number the more heat the unit can produce. The larger your home, the higher the BTU you will want because it means the heating or cooling unit will be able to produce more heated or cooled air.
How many BTU is a 3 ton furnace?
So a 2-ton unit has 24,000 BTU/hr capacity and a 3-ton has 36,000 BTU/hr, and so on. Check out our extended glossary to learn more about other HVAC terms.
Do you include basement when sizing 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.
