Quote:
Originally Posted by Patrick
How do you calculate that the fans are providing more than 100W worth of additional heat to the house, i.e. that you're getting more hot air with the fans running than a 100W heater would provide? I would think that there would be some crossover point where the higher temp of the attic air would offset the power consumption of the fans and you'd want to run the fans only then and above.
|
The fan motors also produce heat, which will get sucked down the chimney, so it's sort of like adding a small electric heater.
I propose to box in the fans and add a mini-chimney which would suck air from the upper regions of the attic. Add a 180° bend at the end with a flap and filter, and the temp sensor should also be at that height. This set-up should help to keep the fans clean and the noise down.
BTW How noisy are the fans?
