variable speed retrokits

[striker]

not sure if i am doing this right, am wondering if anyone has information on converting a standard blower to variable speed i hear there are kits available to do this, wondering where to get info and costs. any help would be greatly appreciated

[jabjz]

Never heard of this, however if it could be done by the time you bought all the parts you could buy a new furnace.

[swany]

There is a kit available, although it is not a true variable blower motor. One company is called Fan Handler. It uses a temperature sensor that controls a solid state board that acts like a dimmer switch to control the blower speed. It will slowly ramp up the motor, and does have a low continuous speed setting. Some multi-speed motors won't do this very well, and may need to be replaced with a better quality motor.
swany