2023 Trademasters logo

Headquartered in Northern Virginia |800.644.6400

2023 Trademasters logo


Why Choose Us for Your HVAC Services?

Trademasters Mission Statement

Trademasters: Setting the standard with well-respected technical experts, who are dedicated to providing our clients solutions for a safe, healthy, energy efficient and comfortable indoor environment.

What Sets Trademasters Apart From Other Commercial and Residential Services Companies

At Trademasters, we will always uphold a high standard of honesty and quality work. Our co-workers are among the very best in the industry – trustworthy and professional technicians who serve every client with the same care and efficiency. Since our initial inception, our longstanding goal has remained providing complete satisfaction. In order to achieve and maintain our standard of excellence, we not only offer the best service, but guarantee points that separate us from the competition.

Upfront Pricing

We use upfront pricing from our price book, so we will gladly quote you a firm price before the work is performed. You will know what we are charging you before we begin the job.

No Pressure

We will not pressure you into work that you don’t need. We give you options and information to help you make an educated decision.


Our technicians wear protective coverings on their shoes while in your house, so we don’t bring dirt into your home.

Carpet Protectors

During equipment installation, we protect your home from damage by using drop cloths and carpet protectors.


NATE-Certified Technicians

Our technicians are highly trained and certified professionals.  North American Technician Excellence, Inc. (NATE) is the leading HVAC/R certification program and is the only test-supported certification program by the entire industry.


Professional Technicians

We employ master tradesmen and have an in-house apprenticeship program that helps our technicians constantly stay at the forefront of our industry.


We check all safety controls and test for carbon monoxide.

Always Available

We have a full-time office staff to answer calls during normal business hours (7 AM – 5 PM), and we have a live after-hours answering service to take your calls in the event of an emergency.


Emergency Services

We have technicians on-call 24/7, ready to help our customers anytime an emergency arises.

Commercial, Residential & Government

We install, service, and maintain Commercial, Residential and Government equipment so we can help you at your home and at your office.


New Equipment and Parts

We only sell new equipment and we only install new equipment or parts. We offer the very best and most modern solutions.

Full-Time Employees

We employ technicians year-round, not just during the busy season. Our technicians are well paid, trained, and motivated. They are not rushed to finish one job to move onto the next.


Registered Manufacturer Warranties

We register manufacturer warranties. Not only do we stand behind our work, but you have the equipment manufacturer standing behind their equipment too.

Drug Tests and Background Checks

We perform pre-employment and random drug testing.  We perform background and driving record checks. We maintain a professional work environment with career minded people, so you can feel comfortable having our employees in your home.



We secure the necessary permits required for your job so there will never be a question as to if it was done illegally or “to code.” County or City inspectors ensure that our work is correctly installed.



We are licensed in all jurisdictions we serve.


We carry general liability insurance, vehicle insurance, and workers compensation insurance.


Referral-Based Company

A majority of our business comes from “word-of-mouth.” We are motivated to do a good job so you will be motivated to recommend us to your friends, neighbors, and family.

Manufacturer Training

We go to manufacturer product training seminars to learn about the latest products we sell to keep abreast of the latest technology. We can help you choose the options that are right for you.

What are your contact details?

Our main office is: 7208 Lockport Place Lorton, Virginia 22079
Our mailing address is: P.O. Box 516 Newington, Virginia 22122

We have several phone numbers that we use to serve our customers.

Our main numbers include:
Northern Virginia: 703-644-6400 | DC:  202-559-6212 | Toll-free: 800-644-6400 | Fax:  703-550-0998

couple sitting on the sofa reading a book at home with their baby son and young daughter

General Service FAQs

What are your hours of operation?

Our office is open weekdays from 7 a.m. until 5 p.m.

Do you schedule installation or maintenance work on weekends?

We only offer emergency service after hours and on weekends, and the after-hours, emergency service rates are higher. If you have an emergency after hours, call 703-644-6400 and ask the service to page the “on-call” technician.

Which holidays are you closed?

We are closed the following holidays: New Year’s Day, Memorial Day, 4th of July holiday, Labor Day, Thanksgiving Day, and Christmas Day.  If Christmas or New Year’s falls on a weekend, the federal holiday will be observed.

Do you have emergency service after hours?

We have technicians and plumbers that are on-call, 24/7.  Should an emergency arise when our office is closed, you can call our main phone number (703-644-6400) to report the type of emergency service you need.  Within one hour of your inquiry, the on-call technician or plumber will then contact you for more information.  Residential emergency service requested after normal business hours require an increased price for diagnostic and service fees.  Call 703-644-6400 or fill out our contact form.

Financing & Maintenance FAQs

What forms of payment do you accept?

We accept cash, checks, Visa, Master Card, and Discover. We do not have a billing department and all residential work is performed on a COD basis.

Do you offer financing?

We offer financing through a third party for new equipment installation work.  Rates and terms vary, so please call or email the installation department for details on our current offer.

What’s included in the ESA contract?

Regular maintenance and service on mechanical equipment prolongs its life and helps keep it running at peak efficiency.  While inspections do not guarantee that your system will operate trouble-free, potential problems can be spotted before they result in a breakdown. Our ESA consists of two thorough seasonal inspections of the heating and air conditioning system using the “Certificate of Inspection,” checking the electrical components of the system and performing carbon monoxide testing (on gas or oil furnaces).  Our ESA customers receive priority dispatching for 24-hour emergency service and a 15% discount on any repairs that might be needed throughout the year.  Any service with Trademasters Service comes with our Satisfaction Guarantee. Call 703-644-6400 or 

My condominium unit owners’ association requires proof that I had maintenance. Can you give me that?

We can perform a thorough inspection that will satisfy the requirements of your condominium unit owners’ association, such as the Gates of McLean or Cardinal Forest. We can use our “Certificate of Inspection” checklist or we can use one provided by your condominium. A single inspection is $98; however, we offer specials in some neighborhoods, so call to see if your neighborhood qualifies for a discount. Call 703-644-6400 or fill out our contact form.