Flame sensor cleaned
The thin rod that proves the burners lit. Coated in soot, it tells the board the flame went out, and the gas shuts off a few seconds after the burners light.
Condensate drain cleared, trap and switch added
High-efficiency furnaces and every AC coil make water. When the drain or trap clogs, a float switch stops the system on purpose so the water doesn’t end up in the ceiling.
Refrigerant topped up
One to three pounds. If it needs it again next season it’s leaking, and topping it up every year is the expensive way to lose.
Run capacitor replaced
The part that kicks the compressor and fan motors into turning. The single most common reason an outdoor unit hums and never starts.
Igniter or flame sensor replaced
A cracked hot surface igniter glows weakly or not at all, so the burners never light. Usually on the van.
Contactor replaced
The relay that sends power to the outdoor unit. Burnt or stuck points mean it sits silent while the thermostat calls, or runs when it shouldn’t.
Blower wheel pulled and cleaned
A wheel caked in dust moves a fraction of the air it should: weak airflow, a frozen coil, a furnace tripping its limit.
Thermostat replaced
Standard through smart, wired and set up for the system it runs.
Defrost board replaced
Heat pumps only: the board that decides when to melt the ice off the outdoor coil.
Control board replaced
The brain in the furnace or air handler. When it goes, nothing downstream of it does what it’s told.
Blower motor replaced
The indoor fan motor. The spread is a standard motor against a variable-speed one.
Condenser fan motor replaced
The fan on top of the outdoor unit. If it stops while the compressor runs, the repair gets more expensive by the minute.
Refrigerant leak found and repaired
Finding it, fixing it, then recharging the system.
$1,850 to $2,700
or $31/mo at 0% APR for 60 months
Compressor replaced, part under warranty
Labor and refrigerant, when the manufacturer still covers the compressor.
$1,900 to $2,500
or $32/mo at 0% APR for 60 months
Compressor replaced, out of warranty
The big one, and usually the point where replacing the system wins. You get both numbers.
$2,200 to $5,100
or $37/mo at 0% APR for 60 months