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Heating and Furnace Repair
For the handful of nights Texas actually needs it
A furnace that runs a few weeks a year still has to work the first cold night
Our own attic photos from recent jobs show Lennox furnaces with new sheet-metal plenums and flue connectors installed the right way, sealed and supported instead of held together with tape and hope. A furnace in this part of Texas might run for three or four weeks out of the whole year, which is exactly why it tends to fail on the first real cold snap, the parts that sat idle since last winter are the ones most likely to stick, corrode, or short out the moment they are asked to work again. Being open 24 hours means a furnace going out at two in the morning during a cold front is an ordinary call here, not an emergency surcharge situation.
What we check before calling it a repair
Ignition failures, a dirty or misaligned flame sensor, a blower motor that will not spin, and a limit switch tripping for no obvious reason cover most of the calls we get. Heat pumps add their own wrinkle, a unit stuck in defrost or one that never seems to catch up on a cold morning usually points to a specific fault rather than the whole system being worn out. Flue and combustion safety get checked on every gas furnace call, because a furnace that heats the house but is not venting properly is a problem that matters far more than comfort.
One review describes calling us for all their AC and heat needs after we got them up and running the same day their system failed.
THE FIRST COLD NIGHT
Why a furnace that barely runs still needs real attention
A furnace that only fires up for a few cold snaps a year does not get the wear a northern furnace sees over a full winter, but idle time causes its own problems. Igniters and flame sensors sit unused for months and can fail the instant they are called on. Blower motor bearings dry out sitting still. A limit switch left untouched since the previous winter can trip on the first real demand and shut the whole system down as a safety measure. None of this means the equipment is bad, it means a furnace that runs this rarely benefits from being checked before the temperature drops, not after the house is already cold at midnight.
Combustion safety is never optional on a gas furnace. A cracked heat exchanger, a disconnected flue, or a plenum that was never properly sealed can let combustion byproducts into the house instead of venting them outside, which is exactly why the sheet-metal work in our own job photos gets done properly rather than patched. If your cooling system needs the same kind of attention once the weather turns warm again, see AC repair, or if the whole system is old enough that a full changeout makes more sense than another repair, our AC installation and replacement page covers what that looks like. Either way, reach us any time through our contact page or by phone, day or night.