Recent Noise — filter?

______________________________________________________________________ My HVAC was working fine until recently. When the system turns on (for heat), after a minute or two I hear a buzzing noise coming from the intake vent and the noise continues until the system shuts off. I’ve Continue reading

low amperage reading while running

______________________________________________________________________ The squirrel cage blower I am using has an Emerson motor at 1/4hp 8.2A 115V 1050rpm. When it starts I see a jump to about 6 amps and then it settles down to almost nothing. On a digital meter Continue reading

janitrol 18-60 wiring

______________________________________________________________________ Im replacing a Janitrol hpt 18-60 with a honeywell rth230b.. the janitrol wires are Y G R O W2 and C…the Honeywell only has Rh Rc W Y G. Preacher Replies: Houston204 “Re(1):janitrol 18-60 wiring” , posted Fri 14 Continue reading

Trane XR 80

______________________________________________________________________ I installed a replacement blower motor on a trane xr80. This furnace is only 6 years old and the company that installed it wanted $400 for the motor and $86 for the start capacitor not including labor…crooks! I purchased Continue reading

I need help with this Evcon Heat Pump. Please

20:19: ______________________________________________________________________ Ok, so I have this evcon A/C unit(HEAT PUMP).I Just installed a new Compressor and Reversing valve. Upon start up, I went through my normal process, Vacuum, gas etc… So upon start up I had T Stat set Continue reading

Air Handler not blowing w/ heat pump running

12:19 ______________________________________________________________________ Everything seems to be working fine except when the heat pump is on, the air handler is not blowing air throughout the house. The air handler works when the auxiliary heat come on, and the heat pump is Continue reading

Oil Furnace = Oli smell

______________________________________________________________________ I have a Heil 20year old oil furnace. When I turn it on I get a strong oil smell throughout the house. My local service HVAC guy tells me that it is a cracked heat exchanger (without even looking Continue reading

HVAC Control problem!

______________________________________________________________________ Hi.. I’m working in a new facility plant, and i have a constant problem with my HVAC control system. Let me describe my situation a bit. In my plant, there are a 2 AHU system that serves the office Continue reading

NEED HELP WITH A HONEYWELL RTH7400D THERMO.

20:08: ______________________________________________________________________ I have a Ruud / Zephyr air conditioner with a single phase heat pump. I purchased this thermostat because it was compatible with just about everything. I installed it this Summer and it ran the A/C just fine, Continue reading

found your site check this

______________________________________________________________________ Intro first, been doing hvac 30yrs. Getting sick of proprietary practices and this type of problem. Have american standard gas pack with open limit 180-30. Has been superceded and have new part number. Unfortunatly american standard nor trane nor Continue reading