Cold-Snap Ready Across DFW

Commercial Heating Repair

When heating fails during a Texas cold snap, your building cannot wait. We repair gas furnaces, heat pumps, hydronic heat, and industrial heating across Dallas-Fort Worth, with fast response and combustion-safety testing on every call.

Call 214-831-5551 Request Service

Expert Repair for All Commercial Heating Systems

Most commercial buildings in the Metroplex run gas furnaces or rooftop units with heating sections, while older downtown and established properties rely on hydronic and steam heat. Industrial facilities depend on process heating that cannot go offline without stalling production. Kahn Mechanical repairs all of it, from a simple gas furnace in a Plano office park to complex heating troubleshooting in a Dallas Medical District building.

Texas winters are unpredictable. A hard freeze in January or February hits equipment that sits idle most of the year, and ignition failures, cracked heat exchangers, stuck zone valves, and frozen condensate lines show up exactly when buildings need heat most. Our trucks stock common parts for Trane, Carrier, Lennox, York, Goodman, and Rheem, so we complete most repairs on the first visit without waiting on special orders.

We do not just swap parts. Our technicians run combustion analysis, gas valve diagnostics, control troubleshooting, and safety testing to find the root cause and keep it from recurring. If your building runs boiler or steam heat, our dedicated commercial boiler repair team handles it, and after-hours failures route to our emergency HVAC repair service.

50+Years Serving DFW

24/7Emergency Heat

Same-DayService Response

CombustionTested for Safety

What We Fix

Heating Repairs We Handle

From ignition faults to heat exchangers, one call covers the full range of commercial heating repair.

Ignition failures (hot surface ignitors and pilots)

Flame sensor cleaning and replacement

Gas valve and pressure switch faults

Cracked heat exchanger detection

Blower motor, capacitor, and belt repair

Limit switch and control board faults

Zone valve, damper, and thermostat issues

Hydronic circulation pump repair

Unit heater and make-up air repair

Blocked flue and condensate drain clearing

Systems We Repair

Every Commercial Heating System, One Team

Whatever keeps your building warm, we diagnose it, repair it, and verify it is safe.

Heating System	Common Failures	How We Respond
Gas Furnaces	Ignition, flame sensor, heat exchanger, blower	Diagnose and repair with full combustion analysis
Rooftop Heating Sections	Pressure switch, flue blockage, short-cycling	Root-cause diagnosis on the packaged unit
Heat Pumps	Reversing valve, defrost control, low refrigerant	Restore heating-mode operation and efficiency
Boilers and Hydronic	Low-water cutoff, pumps, relief valves	Handled by our boiler repair team
Unit and Make-Up Air Heaters	Burners, controls, motors	Keep warehouses and kitchens warm
Infrared and Radiant	Emitters, controls, gas supply	Repair and recalibrate for even heat

Our Process

How Our Heating Repair Process Works

A diagnostic-first method that restores heat and verifies it is safe before we leave.

Fast Dispatch

You reach a real person who sends a technician who lives and works in the Metroplex, for faster arrival.

Root-Cause Diagnosis

We run combustion analysis, gas pressure checks, and control diagnostics to find the true fault, not just the symptom.

Upfront Pricing

You approve clear, itemized pricing before any repair begins. No surprises when the invoice arrives.

Repair and Safety Test

We repair to spec, then verify combustion, draft, and safety controls so your system runs safely and efficiently.

Prevention

Preventive Solutions That Reduce Emergency Calls

Emergency heating repairs cost more than scheduled maintenance. A furnace that fails at 2 AM on a Saturday means overtime labor, rush parts, and a stressed facility manager. The same failure caught during a fall inspection gets fixed during business hours at standard rates.

Our maintenance contracts include heating inspections before winter arrives. We test ignition systems and flame sensors, inspect heat exchangers for cracks, verify venting and combustion, calibrate thermostats and controls, replace filters, lubricate blower motors, and test safety shutoffs. Problems get caught while there is still time to order parts and schedule repairs without disrupting operations.

Buildings on planned maintenance run more reliably, last longer, and cost less to heat, and contract customers move to the front of the queue when something does break. Learn more about our preventive maintenance programs, or weigh a full upgrade with our HVAC installation team.

Why Kahn

Why Facility Managers Choose Kahn for Heating

Combustion analysis on every repairWe verify a safe air-fuel mixture and flue gases, not just airflow.

Carbon monoxide safety testingHeat exchanger and safety-control checks protect your occupants.

Trucks stocked for gas heatIgnitors, flame sensors, gas valves, and motors on board.

All major brandsTrane, Carrier, Lennox, York, Goodman, and Rheem.

Root-cause diagnosticsWe find why it failed so it does not recur in the middle of a freeze.

Efficiency tune-upClean burners and correct gas pressure lower your gas bill.

Same-day responseFast help across the Metroplex when a cold snap hits.

50 years in DFWFamily-owned since 1974 and trusted across the Metroplex.

Proof

Trusted by Commercial Properties Across DFW

Our project progressed with the highest degree of workmanship and professionalism. I have never been associated with a company that has such high standards and pure ethical scope.

Facilities ManagerJenterra LLC

TTI, Inc. Four Seasons AMLI Residential Mary Kay

See the buildings we keep warm on our projects page, and read more feedback on our testimonials page.

Coverage

Serving Commercial Properties Across Dallas-Fort Worth

We have repaired commercial heating across North Texas since 1974, covering Dallas, Collin, Denton, and Tarrant Counties. Find detailed local coverage on our service areas pages.

Dallas County

Dallas
Irving
Richardson
Garland
Mesquite
Carrollton
Farmers Branch

Tarrant County

Fort Worth
Arlington
Grapevine
Southlake

Collin County

Plano
Frisco
McKinney
Allen

Denton County

Denton
Lewisville
Flower Mound
Little Elm

Request Service

Get a Fast Response From Kahn Mechanical

Request Commercial Heating Repair

Tell us what your heating system is doing, and we will get right back to you.

Prefer to talk now? Call 214-831-5551

Common Questions

Commercial Heating Repair FAQ

What commercial heating systems do you repair?

We repair gas furnaces, rooftop units with heating sections, heat pumps, unit heaters, make-up air units, infrared and radiant heaters, and hydronic circulation systems from every major brand, including Trane, Carrier, Lennox, York, Goodman, and Rheem. If your building runs a boiler or steam system, our dedicated boiler repair team handles that work.

My furnace runs but the building is not warming up. What could be wrong?

A furnace that runs without heating the space often points to something other than the furnace itself, such as a stuck zone damper, a failing thermostat, a dirty flame sensor causing short-cycling, a bad pressure switch, or a blocked flue. We diagnose the whole heating system, furnace, controls, distribution, and ventilation, to find the real cause instead of throwing parts at symptoms.

Do you test for carbon monoxide and combustion safety?

Yes. We perform combustion analysis on every heating repair, measuring flue gases, verifying draft, inspecting flame appearance, and checking the heat exchanger for cracks. A furnace that runs but burns inefficiently can produce carbon monoxide and waste gas, so we confirm safe operation before we consider the job finished.

Do you offer emergency heating repair after hours?

Yes. Heating failures during a freeze cannot wait for business hours, so our emergency HVAC repair service runs 24/7 across Dallas-Fort Worth, with priority 2-hour response for maintenance contract customers and same-day service for all commercial properties.

How do I know if a cracked heat exchanger needs replacement?

We inspect for cracks, flame roll-out, and corrosion patterns during service. A small crack caught early can sometimes be addressed before it becomes a safety issue, but a cracked heat exchanger usually means the unit should be replaced for safety. When replacement is the right call, our HVAC installation team helps you plan it, and catching cracks early through maintenance saves thousands over an emergency replacement.

Should I repair or replace my commercial heating equipment?

It depends on the equipment's age, the cost of the repair compared to the value of the unit, how often it fails, and its efficiency. We give you an honest assessment either way. If a repair makes sense we handle it as part of our commercial HVAC repair service, and if replacement is smarter over time, we help you plan it strategically.

Lost Heat? Get a Fast, Safe Repair

Same-day commercial heating repair across Dallas-Fort Worth from a team that has kept buildings warm since 1974.

Call 214-831-5551 Request Service