Tools That May Help
Before calling a professional, these common tools may help you check the issue safely.
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Problem
The furnace runs but no warm air is coming out.
Common Symptoms
- Weak airflow from vents
- System running constantly
- Uneven indoor temperatures
- Higher energy bills
Possible Causes
- Clogged filter
- Ignition issue
- Airflow problem
How To Fix It
- Replace filter
- Check thermostat
- Inspect vents
Safety Tip
Always shut off power to the HVAC system before inspecting wiring or internal components.
When To Call A Professional
If furnace continues running without heat
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