Furnace Not Heating? Checks for Langley Homes
Before booking a repair on a cold, wet evening, a few simple checks can sometimes get the heat back on, and they help the technician if not.
Request an HVAC technicianThermostat
Heat mode, setpoint above the room temperature, fresh batteries.
Furnace switch
Check the service switch on or near the furnace is on.
Breaker
Look for a tripped breaker for the furnace. Reset once only.
Filter
Replace a clogged filter; it can cause the furnace to overheat and shut off.
Vents outside
High-efficiency furnaces vent through plastic pipes on an outside wall. Make sure leaves or snow aren't blocking them.
Condensate
Check the small drain line isn't kinked or full of water.
Error codes
Many furnaces flash a light code through a small window. Note the pattern for the technician.
Gas smell
If you smell gas, leave the house and contact your gas utility's emergency line from outside.
Stay warm safely
Use space heaters carefully, away from curtains and bedding, and never use outdoor heaters indoors.
Next
See furnace repair.
Keep notes
Write down what the furnace did and what you checked. It saves time when the technician arrives.
When to stop
If the furnace still won't run after these checks, leave the panels on and the gas alone. Repeatedly restarting a furnace that shuts down can hide the real fault and may be unsafe.
Keep notes
Write down the light code, the time it stopped and anything you noticed. That information often shortens the visit.
Older furnaces
Furnaces with a standing pilot light may have gone out. Relighting should follow the instructions on the furnace label, or leave it to a technician if you're unsure.
More heating and cooling guides
Heating or cooling trouble in Langley?
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