Furnace acting up?
Heating and Furnace Repair in Dunwoody, GA
Won't light, blows cold or keeps cutting out? We'll find the part that's failing, explain it in everyday words and get the warmth back.
Why Won't the Furnace Heat?
Around here, a furnace naps for most of the year. Then a cold front rolls through, the whole street cranks the heat the same evening and every part that's been sitting idle gets its exam at once. Here's what a gas furnace does each time it fires, in plain terms. A little fan, the inducer, pushes old air up the vent. A pressure switch confirms the vent's clear. The igniter glows. The gas valve opens. A flame sensor double-checks that the burners actually lit. Skip any of those and the furnace shuts itself down for safety, tries again and eventually locks out. Electric furnaces don't have a flame; they rely on heating elements, relays and the blower. Our technician walks through that routine step by step, reads the blinking light on the control board and tests whichever part isn't doing its job. You'd be surprised how many no-heat calls come down to a filter so clogged the furnace overheats and trips its limit switch. One rule tops everything: if you smell gas, don't flip switches or go hunting for the source. Get out and call the gas company or 911 first. Once it's safe, we'll find the problem and quote the fix before starting.
What Furnace Problems Show Up Most?
These are the regulars on a heating repair visit.
Clicks, never lights
Cracked or worn igniters tested and swapped so the burners catch again.
Lights, then drops out
A crusty flame sensor that snuffs the burners right after ignition, cleaned or replaced.
Inducer noise or failure
Inducer motors that whine or won't spin, and the pressure switches that rely on them.
Overheat shutoffs
Limit switch trips traced to a choked filter, a tired blower or blocked return vents.
Air that won't move
Blower motors, capacitors and wheels that keep the warmth from reaching your rooms.
Cold blast in heat mode
We rule out the fan setting, a lockout or a burner fault, one at a time.
Starts and stops all night
Short cycling tracked to a control problem or restricted airflow.
All-electric furnaces
Heating elements, sequencers and relays tested and replaced.
How Do We Get the Warmth Back?
Gas questions come first
On the phone, we'll ask about odors and sounds. Smell gas? Then the advice is short: get out and call the gas company or 911 before anything else.
Watch the startup routine
The technician lets the furnace try to start, reads its error code and tests each part in turn. You'll hear the cause and the price before the repair.
Fix, then a few full cycles
With the new part in, the furnace goes through several heating cycles while the technician keeps an eye on the flame, the venting and the safety switches.
Why Ring Us When It's Cold Inside?
Safety's checked every time
Gas connections, venting and safety controls get looked at on every visit, not just the broken part.
Explained like a neighbor would
You'll learn what failed, why it failed and what keeps it from happening again.
Seven days, plus the night line
Daytime visits all week long, and an emergency line for nights with no heat.
- Gas safety first
- Startup routine tested
- Quote before repair
- Multiple cycles run
Furnace On, House Still Chilly?
Double-check the thermostat's on heat and the filter isn't packed with dust. Still cold? Give us a ring and a technician will help sort it out.