🔥❄️ Furnace Fan Runs But No Heat? Your Heater May Not Be Igniting ❄️🔥
🔥❄️ Furnace Fan Runs But No Heat? Your Heater May Not Be Igniting ❄️🔥
If your furnace is blowing air but the house stays cold, the blower fan can still run even when the heating side is not working. This is a common call we get in winter—many systems will keep circulating air, but the burners (or heat strips) may not be turning on, or a safety control may be shutting the heat down.
At Uptown Heating & Air Conditioning, we track down the real cause fast and restore safe, steady heat.
⚠️ Common Signs
✔️ Air is moving from vents but it’s cool/lukewarm
✔️ Thermostat says “HEAT” but temperature won’t rise
✔️ Furnace tries to start, then stops
✔️ You hear clicking/ignition attempts
✔️ System runs longer than normal with little to no heat
⚠️ Most Common Causes
✔️ Thermostat set to FAN ON (runs fan nonstop) instead of AUTO
✔️ Dirty/clogged air filter restricting airflow (can overheat and shut burners off)
✔️ Dirty flame sensor (burners light then shut down)
✔️ Weak ignitor or ignition failure
✔️ Limit switch tripping (overheating protection)
✔️ Gas supply/gas valve issues (gas furnaces)
✔️ Control board, wiring, or safety switch problems
✅ Quick Checks You Can Do Safely
Set thermostat to HEAT and FAN AUTO
Raise temp 2–3 degrees above room temperature
Replace the air filter if it’s dirty
Check the breaker and furnace switch
If it still won’t heat, don’t keep resetting it—constant retries can cause lockouts and more wear.
🛠️ Why Homeowners Choose Uptown
⭐ Same-day heating service (when available)
⭐ Licensed HVAC professionals
⭐ Full ignition + airflow diagnostics
⭐ Honest, clear recommendations
⭐ Service for all major furnace brands
📅 Schedule your heating check today!
📍 Houston, Katy, Cypress, Spring, Tomball & surrounding areas
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#UptownAC #FurnaceRepair #FanOnNoHeat #HoustonHVAC #HeatingService
#NoHeat #HomeComfort #WinterReady #HVACTech #UptownHeatingAndAir