Furnace won't heat? Troubleshoot common issues and find San Diego HVAC technicians.
Check thermostat, replace filter, ensure gas valve is open, and check if pilot light is lit.
Call HVAC tech if you smell gas, furnace cycles on/off rapidly, there's no heat after troubleshooting, or it's making loud noises.
Costs vary based on complexity, materials, and urgency. Get multiple quotes for accurate pricing.
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