David Tam

No ratings collected yet Annandale, Virginia

3917 GALLOWS ROAD, Annandale, VA 22003, USA

License checked License #119598 18 yrs experience

Verify this license yourself at the Virginia DPOR License Lookup.

Claim / Update

David Tam is a Virginia HVAC contractor serving homeowners and businesses in Annandale, with AC Services as the core of the work. Residents who need a cooling system installed, repaired, or checked before the summer heat often start with air conditioning, and that is where David Tam focuses most of its effort.

Local market — Annandale

HVAC pros here

Have a website

17%

Cooling demand

917

Heating demand

4,881

Cooling/heating demand = annual degree days (NOAA). Electricity = state residential average (EIA).

Services Offered

AC Services in Annandale Heating Services in Annandale Ductwork Services in Annandale Heat Pumps in Annandale Furnace Services in Annandale Thermostat Services in Annandale Emergency HVAC in Annandale Maintenance & Tune-up in Annandale

Service Area

Annandale, Virginia All of Virginia

Location

About David Tam

The business also handles Heating Services, Furnace Services, and Heat Pumps, so customers can keep one contractor across the seasons. Work includes diagnosing airflow and refrigerant problems, inspecting furnace burners and heat exchangers, and troubleshooting heat pump operation in both heating and cooling modes. Ductwork Services cover leaks, poor airflow between rooms, and duct sealing, while Thermostat Services address miscalibrated sensors, unresponsive controls, and programming. Emergency HVAC calls and scheduled Maintenance & Tune-up visits round out the list.

David Tam has been licensed as a state contractor since 2008, holding Virginia contractor license #119598. Its service area centers on Annandale, where the team understands local housing styles, older ductwork, and the humidity and temperature swings common in Northern Virginia.

If you are comparing HVAC contractors near you, ask for a written estimate, confirm the license number, and request a clear explanation of the repair. You can learn more about David Tam's services through HVAC Service Fast.

Frequently Asked Questions

What services does David Tam offer?

David Tam offers AC Services, Heating Services, Ductwork Services, Heat Pumps, Furnace Services, Thermostat Services, Emergency HVAC, and Maintenance & Tune-up.

What areas does David Tam serve?

David Tam serves Annandale, Virginia, and the surrounding local area for residential and business HVAC work.

How do I choose a licensed, insured HVAC contractor in Annandale?

Verify the contractor's license with the Virginia Board for Contractors, ask for proof of liability and workers' compensation insurance, and get written estimates from at least two companies. Compare the scope of work, warranty terms, and payment schedule before you sign.

What should I check before hiring an HVAC pro?

Confirm the license number, read recent customer reviews, and ask whether the technician is factory-trained on your equipment brand. Make sure the quote itemizes parts, labor, and any diagnostic fees.

What are signs it is time to call an HVAC professional?

Call a professional if your system short-cycles, makes grinding or banging noises, has uneven temperatures between rooms, or your energy bills rise without explanation. Burning smells, gas odors, or a carbon monoxide alarm warrant immediate attention.

Is this your business?

5 of 12 profile details are filled in.

Added (5) Missing (7)

Claim it free to add the missing details:

Phone Website Email address Business hours Logo Photos of your work Social profiles

Claim this profile — free

Claimed profiles are always indexed, show a “Claimed by owner” badge, and you can update them any time.

Reviews

No reviews yet. Be the first to review David Tam.

Write a review

Your rating *

Your name *

Security code *

Your review (optional — required for 3★ or lower)

Reviews are moderated before they appear. Please be honest and respectful.

Is this your business?

Claim this listing to update your details, services and contact info.

Claim / Update

More AC Services pros in Annandale, Virginia

These local pros also offer the services you’re looking for.