Commercial Heating Repair in Garland, TX

Commercial heating repair in Garland is rarely a house furnace with a bigger thermostat. On a restaurant, a shop, a small office, or a warehouse bay it is usually one of four things: the gas heat section inside a packaged rooftop unit, a ducted furnace above a ceiling or in a closet, a unit heater hanging over a work bay, or the heating side of a heat pump that spent the summer as the air conditioner. When it quits, the people on the floor notice before lunch.

The pattern is familiar across smaller Garland buildings. Cooling runs for months. The heat section does not. The first cold morning, often a November front, is the first time the igniter and the flame sensor have been asked to work since spring. A rooftop that cooled fine in September can have no heat while the compressor is still healthy.

Boost Air And Plumbing repairs that equipment for smaller buildings. We do not install or repair chillers. The same style of gas-heat repair, written for neighboring cities, is commercial furnace repair in Arlington, commercial furnace repair in Fort Worth, and commercial heating repair in Mansfield. When the heat section is finished and the quote is a new cabinet, the labeled industry ranges are in commercial furnace replacement cost in Arlington. They are not a Garland price.

If someone smells gas (a rotten egg odor), do not keep the unit running and do not look for the leak with a lighter or by opening gas piping. Get people out of the affected area, avoid switches if the smell is strong, and call the gas utility or 911 from outside. If a carbon monoxide alarm sounds, or anyone has a headache, nausea, or dizziness that eases outdoors, move people outside and call 911. Carbon monoxide has no smell. A hot-heater odor is not a test for it.

Smoke, a burning-plastic smell, or a breaker that trips means that unit stays off. Reset a breaker once. A second trip stays off. Do not open a rooftop electrical compartment to see which wire smelled. Do not jumper a limit or a rollout switch to get through the lunch rush.

What fails when the heat finally gets a call

• No call for heat, or no gas. The controller is still on Cool, a schedule held the building back, or the cock at the unit is closed. If the kitchen equipment and the rooftop are both out, call the gas utility. Do not take a valve apart.
• Ignition. A cracked igniter never glows, so the gas valve stays closed. A coated flame sensor lets the burners light and then shuts the gas off. The blower may still run. On a heat pump, no heat can be a reversing valve, a defrost board, or backup heat that never came on. That is not a gas-valve repair, and it is not a reason to force the compressor on.
• Airflow and the limit. A packed filter, a slipping belt, or closed dampers overheat the heat exchanger. Do not bypass the switch or pull the filters and leave them out. Kitchen grease and shop lint are airflow problems until they become heat-exchanger problems.
• Vent, drain, or the heat exchanger. A blocked flue or a failed inducer means the unit will not prove it can exhaust. A clogged condensate drain can shut a high-efficiency unit down. Soot, a yellow flame, or exhaust indoors means that unit stays off. A cracked heat exchanger is not a cleaning item.

A light dusty smell on the first firing can fade as dust cooks off the heat exchanger. Plastic, a smell that builds, soot, or symptoms in the people downstairs mean shut the unit down.

Rooftop, closet, unit heater, and heat pump

Packaged rooftop. Heating and cooling share the curb, the blower, and usually the filters. A no-heat call still needs roof access, a safe way up, and weather that allows the panels to come off. The gas piping and the flue are on the roof with the unit. Older roofs and tight lots change where a ladder or a lift can go. Say so when you book. Crane work is a replacement topic, not a sensor replacement.

Ducted furnace. Closer to a large residential furnace, often above a ceiling in a retail suite or an office. Access may mean a ladder and a ceiling tile while customers are below. Say which hours that space can be disturbed.

Unit heater. A hanging heater in a shop or a warehouse bay heats the air in the room. A failed fan, a bad igniter, or a heat exchanger that has rusted through is the repair. Exhaust must leave the building. Do not run a unit heater that is spilling combustion products into the bay. High ceilings change how the repair is reached, and that labor belongs on the quote.

Heat pump or electric heat. Some smaller suites never had gas heat. No heat on a heat pump can be the outdoor unit, the backup strips, or a control still set for cooling. There is no pilot to relight and no flue to inspect. There is still line voltage. Leave the disconnect alone unless the person who opened it is qualified to close it.

The logo on the cabinet matters less than whether the heat section was installed so it can vent, move air, and fire cleanly. A repair that leaves a starved blower or a disconnected exhaust in place will be back.

What staff can check before we arrive

Keep people out of the mechanical area. Do not send anyone onto the roof.

Confirm the controller is on Heat. Change a filter only if staff already open that rack on a schedule. Leave a disconnect off unless the person who turned it off is qualified to restore it. If several gas appliances are out, call the gas utility. A carbon monoxide alarm means leave the area. Write down the hours the doors are locked, whether another unit still has heat, and whether the roof hatch is locked.

Repair, then decide on replacement

An igniter, a flame sensor, a capacitor, a contactor, or a fan motor on a younger unit with a sound cabinet and heat exchanger is a repair. You should hear what failed and the price after diagnosis and before parts go in.

Ask for a replacement price when the heat exchanger has failed, the cabinet is rusted through, the same limit trip keeps coming back after airflow is corrected, parts are no longer available, or the unit is around 15 years old and a major section has failed. Commercial equipment that runs long hours does not get the idle life a house furnace gets. A repair that is a large share of a new unit is worth seeing side by side.

We do not quote a new unit from a phone description of a smell. Many packaged units get replaced as a whole cabinet even when the complaint was heat, because the curb, the crane, and the electrical work do not get cheaper by leaving a dead compressor in place. That scope should be written down. The industry ranges for it are labeled as ranges, not a Garland price, in the Arlington commercial furnace replacement guide linked above. Your number depends on the unit, the building, and the install.

Commercial HVAC repair and installation is the service page. A free on-site walkthrough applies to maintenance estimates, not to a unit that is already down. A down unit is a repair, quoted on its own. HVAC service in Garland is the local page.

Getting the heat back on

Boost Air And Plumbing repairs commercial heating for smaller buildings in Garland and nearby North Texas communities: packaged rooftop units, ducted furnaces, unit heaters, and commercial heat pumps. We do not service chillers. See our commercial HVAC repair and installation service and HVAC service in Garland. Call (817) 612-9107 or book online. Hours are Monday through Saturday, 8am to 7pm, with after-hours and Sunday emergency appointments available.

Frequently asked questions

What counts as commercial heating repair in a small Garland building? Usually the gas heat section of a packaged rooftop unit, a ducted furnace serving an office or a shop, a unit heater over a warehouse bay, or the heating side of a commercial heat pump. Boost Air And Plumbing repairs that equipment. We do not install or repair chillers.

Why would a Garland rooftop cool all summer and then have no heat? Cooling and heating often share a cabinet and a blower, but the gas valve, igniter, flame sensor, and heat exchanger sit idle through a long cooling season. A coated sensor, a failed igniter, a closed gas cock, or a tripped limit shows up on the first cold morning. The compressor can still be fine.

Can the business stay open during the repair? Often yes, if another unit can carry the space or the weather is mild and the work is on one piece of equipment. A gas smell, a carbon monoxide alarm, or smoke means people leave that area and the unit stays off. Tell us whether customers are in the space and which hours the doors can be closed. After-hours labor is a real line on the quote.

What should staff not do before the technician arrives? Do not send anyone onto the roof to read a blink code, do not jumper a safety switch, and do not open gas piping. Reset a breaker once. A second trip stays off. If several gas appliances are out, call the gas utility. A carbon monoxide alarm means leave the area and call 911.

When is commercial heat a replacement instead of a repair? A sensor, igniter, or gas valve on a younger unit with a sound heat exchanger is often a repair. A cracked heat exchanger, a rusted cabinet, or a unit around 15 years old with a major failure is a replacement conversation. You should hear both prices after diagnosis and before work starts. Industry ranges for that replacement are a different guide, and they are not a Garland price.