Commercial Furnace Repair in Fort Worth, TX

A commercial furnace in Fort Worth 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 three things: the gas heat section inside a packaged rooftop unit, a ducted furnace in a closet or above a ceiling, or a unit heater hanging over a work bay. When it quits, the people downstairs notice before lunch.

The pattern is the same across a lot of the city. Cooling runs for months. The gas section does not. The first cold morning, often a November front after a long stretch of heat, 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. Ongoing visits after it is running again are commercial HVAC maintenance. The same repair, written for a neighboring city, is commercial furnace repair in Arlington. A planned check before the season, so the Monday morning is not the discovery, is commercial furnace tune-up in Irving.

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.

What fails when the heat finally gets a call

Common reasons the heat will not stay on:

• No call for heat, or no gas. The thermostat is still on Cool, a schedule held the building back, or the cock at the unit is closed. If the kitchen range 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.
• 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.
• 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. Plastic, a smell that builds, soot, or symptoms mean shut the unit down.

Rooftop, closet, and unit heater are different repairs

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. Crane work is a replacement topic, not a sensor replacement. Older Fort Worth roofs and tight lots change where a ladder or a lift can go. Say so when you book.

Ducted commercial furnace. Closer to a large residential furnace, often in a closet or above a ceiling in an office or a retail suite. The failure list is similar: igniter, sensor, limit, vent, drain. 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 warehouse or a shop bay heats the air in the room, not a long duct system. 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. That labor belongs on the quote.

Kitchen grease, process lint, and filters that sat all year show up on all three. They are airflow problems until they become heat-exchanger problems. 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 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 to read a blink code, and do not jumper a safety switch.

Confirm the controller is on Heat, change a filter only if staff already open that rack, and 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 if 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 furnace from a phone description of a smell. The visit is how we see the heat exchanger, the vent, and the gas piping. 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 that replacement, labeled as ranges and not a Fort Worth price, are in commercial furnace replacement cost in Arlington. Your number depends on the unit, the building, and the install.

How the visit is scheduled

A retail suite that can live without one rooftop on a mild morning is a different job from a restaurant that can only be down after close, or a clinic that cannot drop a zone during the day. After-hours and Sunday emergency appointments are available. They are not the same labor cost as a weekday visit, and the quote should say which hours we are using. We schedule the next opening that fits the building. We say what we found before we replace parts.

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 Fort Worth is the local page.

Getting the heat back on

Boost Air And Plumbing repairs commercial gas heat for smaller buildings in Fort Worth and nearby North Texas communities: packaged rooftop units, ducted furnaces, and unit heaters. We do not service chillers. See our commercial HVAC repair and installation service and HVAC service in Fort Worth. 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 a commercial furnace in a small Fort Worth building? Usually the gas heat section of a packaged rooftop unit, a ducted furnace serving an office or retail suite, or a unit heater hanging in a shop or warehouse bay. Boost Air And Plumbing repairs that equipment. We do not install or repair chillers.

Why would a Fort Worth rooftop cool all summer and then have no heat? The cooling and heating sections share a cabinet and often 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 switch 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.

Is a burning smell on startup an emergency? A light dusty smell on the first heat cycle of the season can fade as dust cooks off the heat exchanger. Rotten eggs, hot plastic, smoke, soot, or a smell that builds means shut that unit off. If anyone feels ill or an alarm sounds, get people out and call 911. Carbon monoxide has no smell.

When is the heat section 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. The dollar picture for that replacement is a different guide from the repair visit.