No-heat calls
Dacula Heating and Furnace Repair
A furnace that clicks, hums or blows cold air gets checked step by step, from thermostat to burner, until the heat comes back on.
A Furnace Follows a Sequence. The Repair Follows It Too
Every gas furnace runs the same checklist each time it starts. Thermostat asks for heat. A small draft fan, the inducer, purges the vent pipe. A pressure switch proves that draft exists. Then the hot surface igniter heats up, gas flows, the burners catch and a flame sensor confirms they are lit before the main blower kicks on. If any link in that chain fails, the furnace stops right there. Finding the broken link is the whole job. Plenty of furnaces blink a fault code from a small light on the control board, which helps. Others give a click and go quiet. Working down the chain uncovers it: an igniter with a hairline crack, a sensor rod dulled by residue, a draft motor with tired bearings, a pressure switch hose holding water, a high limit opening because a filthy filter starves the furnace of air. Electric furnaces skip the flame but bring their own weak points in elements, sequencers and relays. Mild winters mean a furnace may go untouched from spring to the first frost and then quit the night it is finally needed. Before phoning, look at the thermostat, the service switch beside the furnace, the breaker and the filter. And one rule outranks all of it: a gas odor means leave the house now and contact the gas company or 911 from outside. Repairs wait until the leak is handled.
Furnace Problems We Fix
Most no-heat calls trace back to one of these parts.
Igniters
Hot surface igniters crack with age. No glow, no flame.
Flame sensors
A dirty sensor cannot prove the flame, so the furnace lights and shuts off seconds later.
Inducer motors
A noisy or seized inducer keeps the furnace from ever reaching ignition.
Pressure switches
Blocked tubes or a failed switch stop the startup sequence before the gas valve opens.
Limit switches
When the furnace overheats, often from poor airflow, the limit shuts the burners down. The cause of the heat gets fixed, not just the switch.
Blower motors and capacitors
Heat that never reaches the rooms often means the blower is weak or not starting.
Electric heat
Elements, sequencers and relays checked on electric furnaces and on air handlers with heat strips.
What Happens on a No-Heat Call
Safety first
Any gas smell is handled by the gas company before anything else. Otherwise, the quick checks get covered on the phone.
Walk the sequence
The technician reads any error code and tests each step of the startup sequence to find where it stops. You get the cause and a price.
Repair and test
With the new part in, the furnace runs several heat cycles back to back and every safety control is confirmed.
Why People Call Us for Heat
Methodical diagnosis
Testing the sequence in order means fewer guesses and fewer parts replaced for nothing.
Safety checks included
Limits, rollout switches and flue draft are confirmed every time the furnace is serviced.
After-hours coverage
No heat on a freezing night goes to the emergency line, which is answered day or night.
- Startup sequence tested
- Gas and electric furnaces
- Safety controls verified
- Price before the repair
Cold House and a Quiet Furnace?
Tell us what the furnace is doing, or not doing. A technician will help with the quick checks first and then track down where the sequence breaks.