Originally Posted by
rage2
I've been doing a whole ton of research on furnaces lately since I need to replace my POS. There isn't much savings going from a relatively modern (ie last 20 years) furnace to a fancy high efficiency 2 stage furnace in terms of gas usage. Where you'll get savings is on your power bill by switching to the old school AC motor to a new DC motor in the blower. So you can get that either with a furnace upgrade, or just upgrade the blower. There are retrofit kits available now for AC to DC motor replacements. Oddly pricey in Calgary, about $1000 going rate installed. People seem to be buying parts for about $500 out east and installing it themselves as there are big rebates for switching to an ECM DC motor.