Who makes the best geothermal furnace and why?

The fan on the furnace died. The A/C was running for two days with no fan . The A/C is 15 years ago. The technician said he thought the parts looked good inside. We wonder if the unit was stressed, and how many years left does the unit have (CARRIER...

3 year old York gas furnace makes a loud boom sound just before the end of a heating cycle. This furnace controls two zones with dampers. The boom seems to happen just before the unit purges and opens all dampers. It is not ductwork expanding or contracting...

Right before my furnace gives out heat, it makes this rattling noise. The best way I can describe it is something spinning at high speeds. When I went to go check, I looked through ...show more

My oil-fired baseboard heat furnace (I live in CT) also makes the heat for hot water via a domestic coil. To do this, it stays hot all of the time, 24-7 regardless of temp outside. ...show more

When my furnace starts, the blower motor only makes humming noise and does not start. I found out that it might be the capacitor that is gone bad but I can't find it. Does anyone ...show more

It sounds like someone is banging on it or it is going to explode or something and it happens in different places. Its not actually coming from the furnace it self but from the ducks.

I asked the service guy a couple of years ago and he didn't have a good answer for me. Particularly one room has high output for heat and low for A/C. Last year I bought a window unit in order to keep the house at a reasonable level because we lost all...