Furnace & Heating Repair in Baton Rouge, LA

How Baton Rouge homes heat

• Gas furnaces are common in Baton Rouge, usually in the attic or a hall closet with the AC coil on top. Inside the city, natural gas is delivered by Delta Utilities, which took over Entergy's gas business in 2025 (Delta Utilities).
• Heat pumps heat efficiently through most of a south Louisiana winter, with heat strips for backup. See heat pumps.
• Electric heat strips in an air handler are simple but expensive to run for long.

January brings average lows around 40°F under NWS normals (National Weather Service New Orleans/Baton Rouge, 1991–2020 Climate Normals), with several freezing nights most winters, so heating systems here run in short bursts and sit idle the rest of the year.

Common furnace problems

It will not light

Modern furnaces go through a sequence: the inducer fan starts, a pressure switch confirms the vent is clear, the igniter glows, the gas valve opens and a flame sensor confirms the flame. After a long idle season, the usual culprits are a dirty flame sensor (the furnace lights, then shuts off in a few seconds), a cracked hot surface igniter, or a pressure switch problem from a blocked condensate or vent line.

It short-cycles

A furnace that runs a minute or two and shuts off may be overheating from a dirty filter or blocked return, tripping its limit switch.

Burning smell

Dust on the heat exchanger burns off the first time the heat runs each year. A faint dusty smell that clears quickly is normal. Electrical burning, smoke, or any smell of gas is not.

Attic furnaces and humidity

Furnaces in Baton Rouge attics spend summer in hot, humid air with the AC coil sweating on top of them. Rust on burners, the heat exchanger and the cabinet bottom is common. That is one reason an annual heating check matters even here.

Heat strips and heat pumps

Heat strips can fail at the element, sequencer or limit switch, and they draw enough current to trip breakers when something is wrong. A heat pump that blows cool air in heat mode may have a reversing valve or defrost problem, or may be low on refrigerant.

Carbon monoxide and gas safety

• If you smell gas, leave the house and call 911 and your gas utility from outside. Delta Utilities' emergency number is 1-833-DELTA-99 (1-833-335-8299).
• Any home with gas appliances or an attached garage should have carbon monoxide alarms near bedrooms.
• A cracked heat exchanger can leak combustion gases into the airstream. Annual inspection of gas furnaces is part of the ENERGY STAR maintenance checklist (ENERGY STAR, HVAC Maintenance Checklist).
• Never use a gas oven, grill or generator to heat the house.

Sources: National Weather Service New Orleans/Baton Rouge, 1991–2020 Climate Normals; Delta Utilities; ENERGY STAR, HVAC Maintenance Checklist.