by Roofer911.com |
When you want to calculate for heat loss for your home, you have to go room by room and take into account the room size, windows, doors, floors and ceilings. You can use the following simple mathematical equations or take the appropriate dimension of all surfaces and plug them into any heat loss calculator you find doing a web search.
Your heat loss for your home will be found by multiplying the width of your rooms by the length by what is called a “U” value which is assigned to building materials like wood, glass, brick et al under normal exposure conditions. You can easily find these U values doing a web search. So your heat loss through a surface is width in meters times length in meters times U value or width (m) x length (m) x U Value = heat loss through surface.
Now you see why you have to take all surfaces into consideration when you calculate for heat loss! So what you will ultimately end up with is doing that simple multiplication for all your surfaces then adding them up to get that heat loss. In other words, your surface heat loss will be the heat loss from your walls, floors, doors, windows and roof or total loss = loss for walls + loss for floors + loss for doors + loss for windows + loss for roof.
The final step you will have to make when you calculate for heat loss is multiplying the heat loss by a factor of between 20 to 66 percent depending on how air tight your windows and doors are and how ventilated your roof is.
Steven Briesemeister
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