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 neighbors’, 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. Where the season’s mileage actually accumulates.
- 2 Return and filter. Undersized in half the retrofits, and the reason the far room never cools.
- 3 Air handler and furnace. The part of the system Alabama barely uses, and almost never checks.
- 4 Coil and condensate drain. Liters of Gulf moisture a day, all leaving through one narrow line.
- 5 Attic ducts. Conditioned air, routed through the hottest space in the building.
- 6 Outdoor unit. Where a Gulf-coast August decides which capacitors see another summer.