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JYL · 12-10-11, 05:17 AM

Well, it depend: In continental climate at about 45 latitudes (La Crosse WI, and Montreal,QC certainly are in that zone) An older house build around 1950 with no insulation and original Windows; the lost via the ceiling is usually about 30%, the wall/windows 50% and the basement 10 to 20%. But, this is almost 3500$ in heating for a 2500SF house. You may also fell the child anytime you get close to some area of the house. The floor is cold too. When the temperature drop bellow 0F, it seems you need to heat the house to 80F to fell any type of comfort in these house.

Luckily, many of these house have been retrofit with new windows and R20 in the Attic. Consequently, the heat lost proportion change: Like 20, 45, 35. The cost of heating the house is likely closer to 2500 to 2700$

Finally, some house have seen significantly retrofit and can show as low as 15% Ceiling lost (R 60), 25% Walls (R34 Wall)/Windows . The heating bill is now at 2000$ to 2500$ a years ... but the house is at least comfortable except for a cold floor. In these scenarios, the rim joist and the basemen wall start to eat a lot of the heating bills.

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In coastal area like Seattle, WA and Vancouver BC... the proportion of heat lost by the basemen is much more important: More like 20% (Ceiling),35(Wall),45 (basement). Simply because they still need to heat in June (and as early as September) -- largely because of the earth inertia in that type of climate. In Seattle, the temperature never drop bellow 24F in winter... but it seems to stay around 55F for most of Mai, June, September, October -- just a little too chilly at night and when you wake-up in the morning.

12-10-11, 05:17 AM	#43
JYL Heat recoverer Join Date: May 2011 Location: Quebec, Canada Posts: 17 Thanks: 0 Thanked 2 Times in 2 Posts	Well, it depend: In continental climate at about 45 latitudes (La Crosse WI, and Montreal,QC certainly are in that zone) An older house build around 1950 with no insulation and original Windows; the lost via the ceiling is usually about 30%, the wall/windows 50% and the basement 10 to 20%. But, this is almost 3500$ in heating for a 2500SF house. You may also fell the child anytime you get close to some area of the house. The floor is cold too. When the temperature drop bellow 0F, it seems you need to heat the house to 80F to fell any type of comfort in these house. Luckily, many of these house have been retrofit with new windows and R20 in the Attic. Consequently, the heat lost proportion change: Like 20, 45, 35. The cost of heating the house is likely closer to 2500 to 2700$ Finally, some house have seen significantly retrofit and can show as low as 15% Ceiling lost (R 60), 25% Walls (R34 Wall)/Windows . The heating bill is now at 2000$ to 2500$ a years ... but the house is at least comfortable except for a cold floor. In these scenarios, the rim joist and the basemen wall start to eat a lot of the heating bills. ---------- In coastal area like Seattle, WA and Vancouver BC... the proportion of heat lost by the basemen is much more important: More like 20% (Ceiling),35(Wall),45 (basement). Simply because they still need to heat in June (and as early as September) -- largely because of the earth inertia in that type of climate. In Seattle, the temperature never drop bellow 24F in winter... but it seems to stay around 55F for most of Mai, June, September, October -- just a little too chilly at night and when you wake-up in the morning.