Why Is My Furnace Blowing Cold Air? 8 Causes
From a thermostat fan left on to a dirty flame sensor or a torn attic duct, the eight most common reasons for cold air and the order to check them.
Furnace tips & guides
The Furnace Guide Blog
Plain answers to the heating questions Lincoln homeowners search for most, from strange smells to cold air at the vents. Each guide explains the likely cause, what you can check yourself, and when it’s time to call.
Latest guides
What do you want to fix today?
Start with the guide that matches what your furnace is doing.
How Often Should You Change Your Furnace Filter?
Replacement schedules by filter type, the signs a filter is overdue, MERV ratings explained, and why smoke season and pets change the math.
Furnace Smells Like Burning: What It Means
A smell-by-smell guide: which odors are normal dust burn-off, which point to overheating parts, and which mean leaving the house right away.
Need more than a guide?
When should you stop troubleshooting and call?
These guides are meant to help you understand what’s happening and handle the safe, simple checks yourself. Once a fix involves gas valves, wiring or the burner compartment, it belongs with a technician. Our service pages explain what a proper repair looks like, from ignitor and flame sensor repair to a full furnace tune-up.
If the house is cold right now, skip the reading and see emergency furnace repair, or call the number below to reach an independent heating provider serving Lincoln and Rocklin. For an overview of every service and area we cover, start at our Lincoln heater repair help page.
Cold house?
Talk to a local heating pro
One call connects you with an independent heating provider serving Lincoln, Rocklin and nearby Placer County communities.
(916) 884-9392