I have a 13 year old Carrier gas pack that stopped working last week. The thermostat works and the unit will kick on but no heat (or any air period) comes up in the vents. The unit is working as it is kicking air out its side vent. I had a technician come look at it today and he said he had not...

Service tech says that I have a cracked heat exchanger. He showed me with a camera something which looked like a crack in the exchanger. He didn't check the CO levels so I'm not sure what to do. Winter is approaching here in Colorado. Should I get someone else to look at the furnace?

First time user... Quick question. I have a carrier gas furnace (roof unit) circa 1979. We have been told we have a cracked heat exchanger. The technician showed my husband. He said that since our unit is so old, they can not buy a replacement part, so our only option is to spend the $15K to...

I have some small holes in the heat exchange in a gas concord 21/2 ton unit can they be patched or does it have to be replaced?

I am trying to determine what type of heat exchanger is in my geothermal HVAC unit. The model nomenclature gives 4 options but none of the options listed match the model number on my unit. On the Bryant model nomenclature the actual option is listed as "coax option".The complete model number is...