🔥❄️ Furnace Won’t Turn On? Here Are the Most Common Reasons ❄️🔥
🔥❄️ Furnace Won’t Turn On? Here Are the Most Common Reasons ❄️🔥
If your furnace is completely dead — no heat, no warm air, and it won’t start — don’t panic. Many “no start” problems are simple, but some require a professional to keep the system safe.
At Uptown Heating & Air Conditioning, we diagnose it fast and get your heat back safe and reliable.
✅ Quick Checks You Can Do First
✔️ Thermostat set to HEAT + temperature higher than room temp
✔️ Check the air filter (replace if clogged)
✔️ Make sure the breaker is not tripped
✔️ Confirm the furnace switch is ON (looks like a light switch)
✔️ For gas furnaces: confirm the gas supply is on
⚠️ Common Causes When It Still Won’t Start
✔️ Ignitor failure
✔️ Dirty flame sensor
✔️ Pressure switch / venting issue
✔️ Control board problem
✔️ Blower motor or capacitor issue
✔️ Safety switch tripping
If it won’t start, don’t keep resetting it — that can cause more damage.
📅 Need same-day furnace service? Message us to schedule!
📍 Houston, Katy, Cypress, Spring, Tomball & surrounding areas
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