Furnace & heating repair
Heating in Alabama works three hard months a year and spends the other nine being furniture — which is exactly why the first cold snap is a statewide event. The furnace that gets a fall visit simply works all winter; the one that does not gets discovered in December, from the back of the year’s longest line.
What fails after nine idle months
Idleness fouls the small parts: a flame sensor filmed with oxide that kills the burner seconds after ignition, dust on the burners that arrives as a first-evening smell, a pressure switch reading a flue that hosted something over the summer, an ignitor at the end of its cycles. Most no-heat calls trace to items this small — quick work for a technician, cold nights for the household that waited.
Heat pumps carry the state’s milder winters well, and hide their troubles well too: the electric backup strips quietly take over for a failing unit and the house stays warm while the meter runs wild. A January power bill far above the neighbours’, in a comfortable house, is a service call written in kilowatt-hours — the equipment version of an alarm nobody heard.
The safety side, said plainly
On gas equipment the annual look is combustion maintenance, not comfort maintenance: exchanger inspected, burners cleaned, venting verified. A cracked heat exchanger is rare, serious, and exactly the finding a serious shop documents — the crack on camera, the numbers in the report — rather than asking anyone to take a condemnation on faith. Working carbon monoxide alarms belong in every gas-heated home as plain practice; that sentence is safety, not salesmanship.
And the calendar rule is the same as cooling’s, inverted: October is the month the heating side gets attention on an open schedule. Alabama’s mild-winter economics mean a maintained furnace lasts decades — the machine is not fragile, it is ignored, and one fall appointment a year is the entire difference.
Quick answers
- Why does the furnace fail on the first cold night?
- Nine idle months plus the first real demand is when a fouled flame sensor, tired ignitor or blocked flue announces itself. It is the most predictable date on the heating calendar — and the busiest, which is why the October visit beats the December wait.
- My heat pump keeps the house warm but the bill exploded — why?
- The electric backup strips may be quietly carrying a failing heat pump. Comfort stays normal while consumption multiplies — the bill is the only symptom, and it is worth a measured service call.
- 1 Thermostat — The season’s odometer — a hundred cooling days pass through it.
- 2 Return and filter — The lungs, and the first thing a retrofit house sized too small.
- 3 Air handler and furnace — Up in the attic, asleep nine months, asked for everything in December.
- 4 Coil and condensate drain — Litres of Gulf moisture a day, all leaving through one narrow line.
- 5 Attic ducts — The coldest air in the house, commuting through the hottest room on the property.
- 6 Outdoor unit — Full sun, full load — where August culls capacitors by the thousand.