Btuh Per Square Foot Warm Floor

For example if you re trying to heat or cool 1 000 square feet you would multiply 1 000 by 20 and get 20 000 btus per hour.

Btuh per square foot warm floor. Slide the output to 50 btu sq ft and you will see a floor temperature of 93 at a room air temperature of 70. Over 40 btu per square foot requirements look into radiant walls or ceilings. The british thermal unit or btu is an energy unit. In warmer climates multiply this number by 10 15.

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. It is approximately the energy needed to heat one pound of water by 1 degree fahrenheit. What is a btu. To learn how to adjust btu per square foot for special conditions scroll down.

A bit high for bare feet on concrete floors. Homes that are poorly insulated may require 10 more btus to heat due to heat loss. The ranges in the heating climate zone chart above assume a home with average insulation. And in cold climates multiply the square foot number by 30 40.

Home insulation affects btu requirements. To figure out what size air conditioner you require you first need to determine the amount of btus you require. Once you have the total square footage just multiply that number by 20 to find how many btus per hour you d need to heat or cool the space. This is done by calculating your square footage.

A radiant wall with a mean radiant temperature of 120 in a room at 68 could release close to 100 btu hr. Width ft length ft height ft number of square feet 0. The age and insulation of your home is also a factor you must consider. Air conditioners are sized by the number of btus they put out.

For example if you re trying to heat 1000 square feet in a cold climate 30 000 40 000 btu s will add significant warm air to your home. Btus stand for british thermal units and refer to the amount of energy your air conditioner is using per hour. In warm climates new homes require about 30 btus while old homes need 35 btus. Refer to the climate map at the top of the page to get a range of btus needed per square foot based on your geographic location.

In more moderate climates multiply by 20 30. Number of square feet calculate the number of square feet to heat. Temperature difference factor calculate the the temperature difference factor c outdoor temperature. 1 btu 1 055 joules 252 calories 0 293 watt hour or the energy released by burning one match.

1 watt is approximately 3 412 btu per hour.