Commercial HVAC Maintenance, Repair & Installation Services

A heating failure can disrupt operations and put people, equipment, and piping at risk. Commercial Tech, Inc. repairs commercial boilers, furnaces, rooftop gas-heat units, and hydronic systems throughout Northern Virginia, Maryland, and Washington, D.C. We provide emergency service when your building loses heat.

Our Heating Services

• Emergency heating repairs
• Boiler and hydronic system service
• Furnace and rooftop gas-heat repair
• Burner tune-ups and combustion analysis
• Pump, valve, and expansion tank replacement
• Controls, thermostat, and building automation repairs
• Repairs on Carrier, Trane, Daikin, York, and other major brands

Common Heating Problems We Fix

• Boilers that lock out, short cycle, or will not fire
• Ignition, flame sensor, and gas valve failures
• Failed circulator pumps and zone valves
• Low water pressure, air in the system, and leaking relief valves
• Cracked heat exchangers and venting problems
• Uneven heat between zones or floors

Cracked heat exchangers and venting failures can allow carbon monoxide to enter the building. Our technicians perform combustion and safety checks and will not leave unsafe equipment running.

When Repair Is Not the Best Option

If a boiler or furnace is beyond economical repair, we explain why and provide replacement options. We then handle the full installation, including removal, piping, venting, and start-up.

Prevent the Next Breakdown

An annual heating inspection in the fall catches worn parts before the cold weather arrives. Our maintenance includes burner cleaning, combustion testing, safety control checks, and pump and valve inspection.

Why Building Owners Choose Commercial Tech

Commercial Tech, Inc. is a commercial mechanical contractor headquartered in Manassas, Virginia, and we focus on commercial and institutional buildings. Our heating repair work is performed by trained technicians who hold EPA Section 608 certification, and we are fully licensed and insured. We service equipment from Carrier, Trane, Daikin, York, and other major manufacturers.

We explain what we find in plain language, give you options with clear pricing, and stand behind our work. Whether you need a single repair or a long-term service partner, we serve commercial customers across Northern Virginia, Maryland, and Washington, D.C.

Frequently Asked Questions

My boiler keeps shutting off. What causes that?

Common causes include low water pressure, failed flame sensors, venting problems, and faulty safety controls. A technician should diagnose the cause, since repeated resets can hide a safety issue.

Do you work on older boilers?

Yes. We service both older and modern equipment and can source parts for many legacy systems.

Is it safe to keep resetting my furnace or boiler?

No. Repeated lockouts mean a safety control is detecting a problem. Resetting it over and over can hide a gas, venting, or combustion issue. Call a technician to find the cause.

Call (703) 468-1339 for heating repair or emergency service.