What we fix
Organized by what you notice, since that's where every call starts. Each entry lists the parts and conditions most often behind it.
Cooling
Air conditioners and heat pumps in cooling mode.
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Air is blowing, but it isn't cold
Low refrigerant from a leak, a dirty outdoor coil, or a failed capacitor keeping the compressor from starting.Refrigerant · coil · compressor
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The outdoor unit hums, but the fan doesn't spin
A weak start capacitor, a stuck contactor, or a worn condenser fan motor.Electrical · fan motor
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Water pooling around the indoor unit
A clogged condensate drain line, a cracked or overflowing drain pan, or an evaporator coil that froze and is thawing.Drain line · evaporator coil
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Ice on the copper refrigerant lines
Not enough air moving across the indoor coil — a clogged filter or blower problem — or a low refrigerant charge.Airflow · refrigerant
Heating
Gas furnaces and heat pumps in heating mode.
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The furnace won't light, or lights and shuts off
A worn igniter, a dirty flame sensor, a pressure switch that isn't closing, or a blocked vent.Ignition · safety controls
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The heat pump blows cool air in winter
Defrost controls, a sticking reversing valve, or a low refrigerant charge.Defrost · reversing valve
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The system turns on and off every few minutes
Short cycling: a clogged filter, a flame sensor, an overheating limit switch, or a thermostat in a bad spot.Limit switch · thermostat
Airflow and controls
The parts that move air and tell the system what to do, in any season.
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Some rooms are much hotter or colder than others
Leaky or disconnected ducts, closed or blocked vents, or a blower running at the wrong speed.Ductwork · blower
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The thermostat is blank or doesn't respond
Dead batteries, a loose wire, a tripped float switch, or a blown fuse on the control board.Thermostat · control board
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Squealing, grinding, or banging when it runs
Worn blower motor bearings, a loose blower wheel, or a panel or duct section that's come loose.Blower · cabinet
Recognize one of these?
Call and describe it, or send the details through the contact page.