Lone Star Cooling and Heating
Get help with Heating Repair
Call Lone Star Cooling and Heating, have us call you, or describe the issue.
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Call (325) 219-0005Furnaces and other heating systems that give no heat, too little heat, cycle on and off or make new noises, traced through the system to the part that failed and repaired safely.
01Heating repair
Each of these points toward a different part of the system. Which part it is gets confirmed at the equipment.
The thermostat is calling for heat and nothing warm arrives. The cause ranges from thermostat settings or a switched-off furnace to a failed igniter or a safety control that has locked the burners out, and a technician confirms which before any part is changed.
The system is producing some heat but losing the race. A clogged filter, a weak blower, burners that are not firing fully, leaking ducts or a heat pump struggling in hard cold can each leave rooms short of the setting.
Very short heating cycles often mean the furnace is overheating and a limit switch is cutting the burners, usually because too little air is moving through it. A dirty flame sensor, a badly placed thermostat or an oversized system can cause the same pattern.
A bang as the burners light can mean gas is building up before it ignites, which strains the furnace and deserves prompt attention. Squealing tends to come from a blower motor or belt, and rattling from a loose panel or a failing inducer fan.
Many furnaces flash a coded light on their control board to report a fault, such as a failed ignition or an open pressure switch. The pattern gives a technician a starting point, though the part named by the error code is sometimes reacting to a problem elsewhere.
02Urgency
Most heating trouble gives some warning. Gas, carbon monoxide, burning smells and freezing weather change that.
None of this repairs the heat. All of it keeps people safe while the system waits to be seen.
Leave the building straight away without switching lights, appliances or the thermostat on or off, and without lighting any flame. Call the gas utility or 911 from outside, away from the building.
Get everyone, pets included, out into fresh air and call 911. Stay outside until emergency responders say it is safe to go back in.
Switch the system off at the thermostat, and at its breaker if the panel is safe to reach. Leave it off until a technician has looked at it.
Gather people in one room with extra layers. Never heat the building with a gas oven or range, a grill or a generator, because each can fill the air with carbon monoxide. Keep any space heater clear of bedding, curtains and furniture.
Heating Repair
Serving Abilene, TX.
03How it is diagnosed
Every heating system works through a sequence of steps, and diagnosis follows that sequence until it finds the one that did not happen.
On a gas furnace, the thermostat calls for heat, a small inducer fan starts to draw air through the vent, a pressure switch confirms that draft, and an igniter lights the burners. A flame sensor then proves the flame, and only after that does the blower start sending warm air to the rooms. A technician checks each step in order, because the furnace will not move past one that fails.
Electric heat is simpler: relays switch banks of heating elements on in stages, protected by limits and fuses. A heat pump adds an outdoor unit that moves heat into the building, backed by electric elements for the coldest spells. Across all of them, a safety control that keeps shutting the heat off is pointing at the real fault, and it is never the part to bypass.
04Repair or replace
The part that failed and the condition of everything around it decide this more than the age of the equipment alone.
A single part has worn out on an otherwise sound system: an igniter, a flame sensor, a pressure switch, an inducer or blower motor, a control board or a thermostat. Replacing it puts the system back the way it ran before, often on the same visit.
The heat exchanger of a gas furnace has cracked, the compressor of a heat pump has failed, or breakdowns have begun to follow one another on older equipment. At that point the money for the repair usually does more toward a new system than toward keeping the old one going.
05Questions
Usually the blower is running while the burners are not. The furnace may have failed to light and locked itself out, a limit switch may have cut the burners after overheating, or the thermostat fan may be set to on rather than auto. A heat pump also blows cooler air for a short time while it defrosts.
A brief dusty smell is common at the start of the season, as dust that settled on the burners or heating elements over the summer burns off. It should fade after a short run. A smell that lingers, grows stronger, or smells electrical or like hot plastic is a reason to switch the system off.
Yes. With too little air moving through it, the furnace runs hotter than it was designed to, and a limit switch shuts the burners off to protect it. The result is short bursts of heat and a cold house, and repeated overheating also stresses the heat exchanger over time.
A smell of gas, a carbon monoxide alarm, a burning electrical smell, or no heat or cooling in dangerous weather: urgent. A system that runs longer than it used to, a new noise or one room that is off: worth a visit soon, but not tonight.
If it smells of burning, is leaking water, or the outdoor unit is humming without its fan turning, yes: switch it off at the thermostat. A system that runs but does not keep up can usually stay on until it is looked at.
What the system is doing, when it started, what the thermostat is set to and what it reads, and whether the outdoor unit is running. The age of the equipment and a photo of its label help a technician arrive prepared.
Lone Star Cooling and Heating
Call Lone Star Cooling and Heating, have us call you, or describe the issue.
Prefer to talk?
Call (325) 219-0005