Every October there’s a week when Georgia finally gives up on summer. The first real cold night rolls through Winder and Jefferson, everybody’s furnace kicks on within a day or two of each other, and our phones get busy. Most of those calls are routine. A few of them aren’t — and the ones that worry us most are the safety calls.
A furnace that’s been sitting idle since March deserves a little suspicion before you trust it to run all winter. Here’s what we check, what you can check yourself, and the one danger you can’t see, smell, or hear coming.
Carbon monoxide: the risk nobody notices
Carbon monoxide is a byproduct of burning fuel. A healthy gas furnace produces it too — the difference is that a healthy furnace vents every bit of it outside through the flue. Problems start when something interrupts that path: a cracked heat exchanger, a blocked or rusted-out vent pipe, a flue connection that got knocked loose when someone was moving boxes in the attic.
CO has no color, no odor, and no taste. Early exposure feels like coming down with something — headache, fatigue, mild nausea — which is exactly why it gets missed. People assume it’s a bug going around the house. If everyone in the family feels off at home and better away from home, take that seriously.
The fix for the invisibility problem is simple: working CO detectors. Put one on every floor and near the bedrooms, test them when you change your clocks, and replace any unit older than its stamped expiration date (most last five to seven years). Detectors are cheap. There is no cheaper insurance in your whole house.
Warning signs your furnace needs a professional look
Your furnace will usually tell you something is wrong before it becomes dangerous. Pay attention to:
- A burner flame that’s yellow or flickering instead of steady blue — a sign of incomplete combustion
- Soot streaks or rust around the furnace cabinet or vent pipe
- Moisture or condensation on windows near the furnace while it runs
- A pilot light that keeps going out, or frequent short cycling
- Any burning or metallic smell that lasts beyond the first dusty hour of the season
One note on that first-start smell: a little burnt-dust odor when the furnace fires up for the first time each fall is normal and should fade within an hour or so. We covered that in our post on turning on your furnace this fall. A smell that lingers, or anything that smells like gas, is a different story — shut the system down and get it looked at.
What a safety inspection actually covers
When our technicians inspect a furnace in Lawrenceville or Monroe, the safety side of the visit is the part homeowners never see from the hallway. We pull the burner assembly and look at the heat exchanger for cracks and corrosion, test the flue for proper draft, check gas connections for leaks, verify the limit switches and flame sensor are doing their jobs, and measure CO levels at the registers while the system runs. A cracked heat exchanger in particular is nothing to gamble on — it’s the most common way exhaust gases end up in your home’s air instead of outside.
Older homes around Jefferson and the rest of Jackson County deserve extra attention here. If your gas furnace is past the fifteen-year mark, annual inspections stop being optional in our book. Metal fatigues. Vents rust. The furnace that ran fine for a decade can develop a problem in year sixteen.
A quick word on space heaters and generators
Two things we see every Georgia winter: portable generators running in garages after an ice storm knocks the power out, and unvented space heaters doing overtime in bonus rooms. Generators belong outside, well away from windows and doors — never in a garage, even with the door open. And if you’re leaning on space heaters because your furnace can’t keep up, that’s a heating problem worth solving properly rather than working around.
Frequently asked questions
How often should a gas furnace be inspected?
Once a year, ideally in early fall before heavy use begins. An annual inspection catches cracked heat exchangers, venting problems, and gas leaks before they become hazards, and it keeps the system running efficiently through a full Georgia winter.
Where should carbon monoxide detectors go in my house?
Install at least one CO detector on every level of the home and one near each sleeping area. Keep them at least 15 feet from the furnace itself to avoid nuisance readings, test them twice a year, and replace units past their expiration date, typically five to seven years after manufacture.
What should I do if my CO detector goes off?
Get everyone, including pets, out of the house right away and call 911 from outside. Don’t open windows first or hunt for the source — just leave. Once the fire department clears the home, have the furnace and other fuel-burning appliances professionally inspected before running them again.
If your furnace is due for a safety check — or something about it just doesn’t seem right — we’re here around the clock, including nights and weekends. Call American Comfort Heating and Cooling at 678-203-6336 or request an estimate online. We serve Winder, Jefferson, Lawrenceville, Monroe, and communities across Northeast Georgia and metro Atlanta.
