But you must contact a professional if the problem persists.
Here are the most common reasons a furnace isn’t blowing hot air.
This unit controls the temperature and fan on the furnace.
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If you did the installation yourself, you might want a professional to give the wiring a second look.
The furnacefilter should be replacedonce every three months.
How to fix:Be patient and give it time to warm up.
Investigate other potential issues if it doesn’t warm up after 15 minutes.
When the high-limit switch breaks down, it tells the HVAC system the furnace is overheating and needs cooling.
How to fix:An HVAC technician is required to replace the broken switch.
Fuel Source Is Deficient
A furnace needs some key in of fuel to work.
Whether that is oil, gas, or electricity depends on the punch in of furnace.
How to fix:If you use oil, check the oil tank is full.
If you use gas, see to it the gas valve is open.
If on an electrical system, check the fuses or breaker hasn’t tripped.
Pilot Light Is Out
Check the pilot light or ignition system; it may have gone out.
Sometimes, cleaning the pilot light will improve gas flow and get the system working again.
Burner Is Blocked
Burners can get blocked or clogged over time, preventing fuel from getting through.
Without access to fuel, the burner cannot ignite, and the furnace can’t produce heat.
How to fix:Contact anHVAC technician to cleanthe burner and prevent future issues with a regular maintenance schedule.
All other maintenance and repair issues should be left to professional technicians.
Yes, a faulty thermostat can cause no heat in your home.
Since thermostats are easy to change and relatively inexpensive to replace, look at them first.
The main furnace problem is overheating.
Overheating can be avoided by changing filters at least once every three months.
