Commercial HVAC Maintenance, Repair & Installation Services

Not every HVAC need fits neatly into heating or cooling. Commercial Tech, Inc. provides general heating, ventilation, and air conditioning service for light commercial buildings, offices, retail stores, restaurants, medical offices, and churches throughout Northern Virginia, Maryland, and Washington, D.C.

Ventilation and Indoor Air Quality

Good ventilation keeps occupants comfortable and healthy. We service and install:

• Exhaust fans and restroom exhaust systems
• Energy recovery ventilators (ERVs)
• Make-up air and fresh air systems
• Air filtration upgrades, including MERV-rated filters
• Humidifiers and dehumidifiers
• Ductwork repair, sealing, and modifications

Air Handlers, Ductwork, and Airflow

Hot and cold spots, noisy vents, and stuffy rooms are often airflow problems rather than equipment failures. We diagnose duct leakage, damper and VAV box issues, failed blower motors, and restricted returns, and we balance systems so every space receives the right amount of air.

Controls and Thermostats

We install and repair programmable and smart thermostats, zoning systems, and basic building controls, and we connect equipment to existing building automation systems. Better control scheduling is often one of the fastest ways to reduce energy costs.

Service for Every System

Our technicians work on Carrier, Trane, Daikin, and York equipment and other major brands, including rooftop units, split systems, ductless systems, furnaces, and heat pumps. Refrigerant work is performed by EPA Section 608 certified technicians.

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 general HVAC 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

Why is one room always hotter or colder than the rest?

Common causes include duct leaks, closed or broken dampers, poor return air, and thermostat placement. A technician can measure airflow and correct the imbalance.

How often should filters be changed?

Most commercial filters should be changed every one to three months, depending on the filter type and the building environment.

Can you add cooling or heating to a renovated space?

Yes. We extend ductwork, add ductless or VRF units, and adjust existing systems when offices are reconfigured or spaces are added.

Call (703) 468-1339 or use our contact form to schedule service.