leaking furnaces

______________________________________________________________________ Hi. I am looking at rental properties, all similar and built at the same time, and at least two of them have leaking furnaces. 1) The carpet inside its tiny closet is damp and moldy. It’s even leaked to Continue reading

Blower Issue–Relay or Other?

______________________________________________________________________ Multiple symptoms. 1. Blower does not come on when thermostat switched to Fan–“ON”. 2. In Fan-“Auto” the blower does not come on when the furnace heat comes on. 3. Blower will come on if in Fan-“ON” and furnace heat Continue reading

Help in deciding on new CAC system

______________________________________________________________________ It’s time to replace the air handler (35-40 year old Fedders) and condenser (15 year old Goodman) in my home. I have to admit this has been one of the more difficult projects for me to research and attempt Continue reading

Thermostat wiring question

______________________________________________________________________ I am replacing a honeywell t8411r with a honeywell rth7400. I just want to make sure I have wired it properly. I have a lennox heat pump and lennox blower unit. The old thermostat had wires on R, G, Continue reading

Installing Honeywell thermostat

______________________________________________________________________ I have a boiler hot water system (Peerless) and I am trying to install a honeywell RTH7400D thermostat. The old thermostat (very old manual thermostat) is not marked as to color and has 2 wires conected. I have identified Continue reading

Goodman GMP125-4 blowing cool air

22:11: ______________________________________________________________________ This thing has been driving me crazy for the last few days. My furnace keep running all day long (non-stop) but only blowing cool air (there is no flame), even though the temp inside the house is about Continue reading

Fan will not turn off

______________________________________________________________________ I have a Duomatic-olsen gas furnace. Model # HCS2. The fan runs Continually. The heat stops. The fan limit switch is set to auto, The thermostat has the fan also set to auto. The thermostat is a Honeywell chromotherm Continue reading

Heat Pump Thermostat Multistage?

______________________________________________________________________ I am looking to get a programmable thermostat for my heatpump at home. I keep seeing Multi Stage and single stage thermostats. Is this related to what type of heat pump i have, or is single stage and multi Continue reading

Lennonx G23Q3 /100

______________________________________________________________________ Hi all, it getting cold outside, and I once again need the help of the experts out there. We obviously woke up to a cold house this morning. Went down stairs, and noticed the breaker had been tripped for Continue reading

Lennox G20 series problem

______________________________________________________________________ My furnace was installed in 1991. The pilot is electronic ingnition. It won’t spark unless I disconnect the lead to it and reconnect it. I may have ot do this a couple of times before it will fire up. Continue reading