Covering the upper floor for insulation against cold

[frhe]

Use special window sealing tape instead, available for purchase at ICA (at least here in Norrland). The advantage is that it is much easier to remove without peeling off all the paint. Masking tape that stays on for a long time usually becomes completely impossible to remove.

 

[Avemo]

Regarding such a heater, it is important to place it in, for example, a window so it only draws cold outside air that is warmed before it is blown in. I don't think anyone meant that it should be used as the sole heat source but rather to relieve electric heating for 1 kr/kW, which is at least almost half the price of electricity even under normal circumstances, and these days just a few percent of the price (don't forget all the grid fees, taxes, transmission fees, etc., on electricity too).

It blows in 1000 cubic meters of air per hour. If it's 10 degrees cold outside and 20 degrees warm inside, this amount of air needs to be heated 30 degrees. To heat 1000 cubic meters of air per hour by 30 degrees, approximately 10 kW is needed. So, 20 kW remains to heat the room. Then it's suddenly 1.50 kr/kWh instead of 1 kr/kWh. When I look at my electricity bill for December and add up the variable parts, it ends up at 1.30 kr/kWh. If anyone wants to use a heat cannon to relieve electric heating, that's fine with me, but I don't believe it results in monetary savings.

Erik

 

[Tossegubbe]

Yes, you're right about that Erik, I missed calculating that part even though it's not that simple since you can't fit thousands of cubic meters in a house without back pressure, etc.

My latest electricity billing around New Year was just over 2 SEK/kWh, but it can vary depending on the location and agreements, etc., of course.

It blows in 1000 cubic meters of air per hour. If it's 10 degrees cold outside and 20 degrees warm inside, then this amount of air needs to be heated 30 degrees. To heat 1000 cubic meters of air per hour by 30 degrees requires approximately 10 kW. So there remains 20 kW to heat the room. Then suddenly it's 1.50 SEK/kWh instead of 1 SEK/kWh. When I look at my electricity bill for December and sum up the variable parts, it comes to 1.30 SEK/kWh. If someone wants to use a heat cannon to relieve the electric heat, I don't mind, but I don't believe it results in monetary savings.

Erik