800-644-6400 | 7208 Lockport Pl Lorton, VA 22079
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Northern Virginia
Residential Heating & AC

Our team’s priority is to be there when you need us, keep your home at the perfect temperature and your energy bills low.

Call (703) 644-6400

4.6 out of 5 stars google review score

We’re committed to the highest quality standards, and we’re there when you need us, 24/7.

Save up to $250
with the purchase of a new qualifying heating and AC system

a new trane hvac system from trademasters

At Trademasters, our longstanding goal is to provide complete customer satisfaction. Our experienced co-workers are among the very best in the industry – trustworthy and professional technicians who serve every client with the same care.

We have a range of services especially for our residential clients. To help you lower your bills, we can upgrade you to Energy Star rated equipment, providing you with cutting edge technology and the highest possible efficiency (and savings). Our services come with quality assurance and up-front pricing. Our technicians are all highly trained, NATE-certified, bonded, and insured, so you can count on us to get the job done correctly. Once your equipment is installed, we will be on-call 24/7 for any emergencies.

Call 703-644-6400 for:

  • Repairs
  • Installation
  • Maintenance
  • Replacement of your AC system, furnace, and heat pumps

We serve the Northern Virginia DC Metro area east of Sterling and north of Quantico, including Reston, Falls Church, Arlington, Alexandria, Annandale, Fairfax, Chantilly, Lorton, Woodbridge, and Dumfries. Currently, we do not offer residential service in Maryland or DC. See our list of service areas.

Reasons why area homeowners choose Trademasters for new systems:


  • We install all major HVAC brands including Trane, Carrier, Mitsubishi/Daikin, York, and Goodman.
  • With the installation of a new system, you receive 1 free heating inspection and 1 free cooling inspection, plus discounts on service repairs!
  • We offer a 2-year labor warranty on high efficiency equipment and a 1-year labor warranty on standard equipment.
  • We register and monitor manufacturer warranties for the customer.
  • We offer special financing through Wells Fargo.
  • Contact us now for your hassle-free estimate at no cost.
trademasters hvac and plumbing trucks lined up oustside residential home

Heating and Air Conditioning

  • Heat pumps
  • Boilers
  • Radiators
  • Furnaces
  • Air conditioning units
  • AC compressors
  • Ducting
  • Geothermal heating
  • Central heating

Heat Pumps are air conditioners that run in reverse. They extract heat from outside and pump it inside. Heat pumps can be installed with an electric furnace on the inside or combined with a gas furnace. Either of these options create a dual fuel hybrid heating and cooling system.

In more moderate temperatures, a dual fuel hybrid system uses the electric heat pump to heat your home. When temperatures drop below freezing, it automatically switches over to gas. Since electric companies tend to charge less for electricity during the winter months, using an electric furnace can save you money.

A heat pump makes an ideal heating/cooling system for a basement remodel or a room addition. It is more efficient, has a lower upfront cost, and is less complicated to install compared to a traditional gas-fuel system.

Air Conditioning

Types of Air Conditioners

Air conditioners can be organized several ways, but the easiest is by type. All units can be divided into three distinct major types: single stage, two stage, and variable speed units.

Efficiency or SEER Rating

“SEER” is an abbreviation for “seasonal energy efficiency ratio.” The SEER (or efficiency) rating of an air conditioner refers to how much electricity the unit will use to keep you cool during a typical season. Higher numbers are better: the higher the SEER, the higher the efficiency is, and the less electricity the unit will consume.

Tonnage or Capacity

The “tonnage” of an air conditioner refers to the unit’s ability to remove heat from your home. The heat contained in buildings is measured in tons.

To give you an idea of what a ton of heat is, imagine a block of ice weighing one ton. One ton of heat is the amount of heat it would take to melt that block of ice in an hour. A ton of heat is also equivalent to 12,000 BTUs or 18,000 burning matches.

Residential air conditioners are made in sizes of 1.5 to 5 tons. They usually increase size in half-ton increments. The job of an air conditioning contractor is to determine what size (or tonnage) unit you need for your house. In this case, is it not a matter of “the more, the better.”

An oversized air conditioner will not remove the proper amount of moisture from the air. An undersized air conditioner will run constantly even at moderate temperatures and will not adequately condition the space. Since every home is unique, the best option is often to choose a two speed or variable unit. They work well even when slightly oversize.

Adding a variable speed furnace will help you remain dry as well as cool.

Single Speed Air Conditioners

Single speed air conditioners produce the same amount of heat removal all the time regardless of how hot and muggy it is outside. They are built to handle the hottest days of the year. While this is great in July, it means that they are larger than needed the rest of the time.

A good contractor will select a unit slightly smaller than what is needed for peak temperatures, since most of the time we do not see peak temperatures. Matching your unit to the temperatures you see most of the time will be more efficient and save you money.

Two Speed Air Conditioners

Two speed air conditioners have two distinct output capacities to better condition your home. These units can change the amount of cooling capacity they produce depending on how hot it is. Because they can slow down and run longer, they do a better job of removing moisture and providing enhanced comfort.

Variable Speed Air Conditioners

We recommend Variable Speed units for large homes. Instead of turning on and off all day to adjust the temperature, they run at a variable speed. They have 700 different outputs, which means they can accurately provide temperatures to within 1/10th of the degree you want. They provide exceptional comfort and moisture removal, with none of the hot and cold temperature swings typical to one and two speed units.

Air Handlers

Air handlers are electric furnaces with integrated cooling/heating coils. They are normally installed in conjunction with a heat pump. Air handlers distribute air equally throughout your house, provide heat in the winter, and dehumidify and cool your home in the summer. They are quite often installed in homes with no natural gas or as auxiliary systems in a basement or room addition.

Just as there are several types of gas furnaces, there are several types of air handlers.

  • Different speeds: A single speed air handler runs at the same fan speed all the time. Variable speed air handlers that vary their output by demand.
  • Different currents: A variable speed air handler runs off D/C (direct current), while a single stage air handler is powered by A/C (alternating current). The D/C driven variable speed air handler can be coupled with a humidity-sensing thermostat that allows enhanced dehumidification in the summer.

A variable speed air handler can remove 5-10% more moisture from your home than a standard single speed unit can.

Air handlers typically have auxiliary heating elements, which are installed by your contractor. These heating elements are available with different amounts of heat output. Heating elements provide heat on chilly days to supplement the output of heat pumps or a furnace.

Energy Efficient Retrofitting & Energy Audits

Heating and cooling equipment over ten years old can be significantly less efficient than currently available systems. Upgrading an older system can not only help the environment, but also save money through reduced energy use, decreased down-time, and lower maintenance and repair expenses. Retrofitting an older, inefficient HVAC system can more than pay for itself in a very short time.

Trademasters uses the latest state-of-the-art equipment and methods, applying a comprehensive approach to retrofitting that ensures your HVAC system’s efficiency, reliability, and safety. Energy Star rated heating and cooling equipment can help you save up to 30% on energy costs and meet new environmental standards.

It’s a win-win for both the environment and your budget.

Smart Home

Contact Trademasters

We’ll find the right solution for you and your budget.

    What our customers say:

    Trademasters is simply the best hvac contractor around. Very professional technicians. Have installed both upstairs and downstairs units in my home and I am more than pleased. I’m so glad I found them! Plus the office staff is very friendly and accommodating.
    Jude Barnes
    Jude Barnes
    19:03 10 May 21
    Trademasters are hands down the best HVAC company I have ever worked with. They answer their phones and all techs are extremely professional. Their pricing is also very completive and affordable.After years of working with other companies I am so happy I found Trademasters Service, Inc and I plan to be a customer for life.
    Jackie Huelbig
    Jackie Huelbig
    21:23 04 May 21
    Trademasters inspected our water heater & A/C as required by our Condo HOA. The tech was friendly, professional and showed up on time. The fee for their service was fear and reasonable. We decided to obtain their annual service contract for our Heating and A/C.
    Phillip Gottfried
    Phillip Gottfried
    20:53 21 Apr 21
    We have used Trademasters for almost 25 years. Their service is excellent and timely. We have never had a problem requesting emergency service. They are always accommodating. We recently contracted with Trademasters for a new furnace, air conditioner and hot water tank. All three jobs were done on time on the day they were scheduled. They were in and out in a few hours. There have been no followup issues. A job well done by the Trademasters staff.
    George Hyder
    George Hyder
    14:09 13 Apr 21
    Being in the commercial real estate industry for the past decade, I have worked with countless contractors. When it came time to evaluate overhauling my residential HVAC system and water heater, I received a few quotes from vendors and was then referred to Trademasters. I instantly felt confident with this vendor from the onset while meeting Shane for over 2 hours for the initial site visit. After several subsequent calls, given the project's scope and financial investment, we released Trademasters and could not be more satisfied. I was overly impressed by the prompt communication by Tabatha and the team at the main office from pulling the permit, scheduling around inclement weather and meticulous record-keeping of all necessary documentation.Further, I was blown away by the attention to detail, work ethic and ability to quickly problem-solve the day of the installation performed by Chris P., Chris F. and of course, Phil. They truly went above and beyond. I can genuinely state that I will be referring Trademasters to clients & friends and cannot wait to get them on board for my commercial projects!
    Jarrett Haring
    Jarrett Haring
    15:24 02 Mar 21
    Freddy and Ben were fantastic! Great service, reliable and did a great job. Would use trade masters again!! Thank you!
    Jill Vlasic, Rph, Realtor
    Jill Vlasic, Rph, Realtor
    00:03 14 Feb 21
    Trademasters was quick to provide a quote for a replacement HVAC unit. Price was responsible with no "hidden" costs. They were sure to include and explain the little things that really make a difference that we would not have even though of as a homeowner. Things that seem “small” but are worth it such as a trap we can see and clean, a drip pan sensor and float sensor to detect leaks and clogged lines to prevent water damage to our house, and a new equipment pad and risers for the outdoor unit. Really appreciated the honesty and transparency of the quote. They additionally provided great information for us to decide on the type of replacement unit we wanted/needed. They answered any questions we had promptly and thoroughly. When the two technicians arrived on site they were on time, professional, and incredibly knowledgeable. They wore face masks (COVID), shoe covers, and laid down a drop cloth from the front door to the indoor unit to protect the house during their work and trips inside and out. They were impeccable when they cleaned up their work inside and out. They were extremely professional, hard working and efficient during their time here. The orientation of the new unit, explanation of the initial startup, testing of the unit and all the details of the work completed were above standard. Trademasters really goes above and beyond from start to finish.
    Katie Allen
    Katie Allen
    18:14 10 Feb 21
    Trademasters was quick and professional and worked for a fair price. We would definitely reccommend.
    Anna Henderson
    Anna Henderson
    22:15 13 Jan 21
    Our technician was excellent at explaining what was wrong with our hot water heater and what needed to be done to repair it. He took full precautions with regard to the pandemic, and I was just very impressed and assured by his professionalism.I will use Trademasters again.
    Chris (sirc)
    Chris (sirc)
    17:22 29 Dec 20
    Trademasters did a great job on our home full HAVC/heating replacement, I called Shane, and we recently had our HVAC unit replaced by this company and the quality of work was excellent! Also, the staff worked with a high level of professionalism. So far doing great with no issues.
    James Wang
    James Wang
    20:34 16 Dec 20
    Excellent customer service! Had a heat pump installed and all work was done on schedule. Fair price with no problems afterwards. Will use them again.
    Benjamin Johnson
    Benjamin Johnson
    15:21 10 Dec 20
    I decided to go with Trademasters to replace my HVAC system after receiving a reasonable quote with no upselling. The service techs were punctual, professional, and proficient with the replacement and repairs. I will definitely consider using Trademasters for my future service/repair needs.
    Ada O
    Ada O
    23:28 21 Oct 20
    Trademasters did a great job on our first full HAVC/heating replacement, so we called Shane, and did it for our 2nd zone of two. So far doing great on first install over five years no issues, and second just a month ago.
    edward haugland
    edward haugland
    21:15 12 Oct 20
    I'm giving Trademasters five stars thanks to the five-star service we received. We recently had our ancient (and dead) HVAC unit replaced by this company and the quality of work was excellent! Also, the staff worked with a high level of professionalism.From our initial estimate meeting with Shane, I was very comfortable with his knowledge and was confident that they could do the job, which wasn't and easy one due to the age of our previous unit and the orientation of it. Shane gave a competitive quote and we decided on Trademasters largely due to his understanding of the situation and his experience.The staff worked from 7 am to 4 pm. It was an all-day job, but they got the work done earlier than previously estimated. Safety precautions were definitely taken and the technicians kept their masks on for the duration of the work, which alleviated any concerns. Once that air conditioning kicked it, relief was granted! Payment was easy as well and the office staff did a great job coordinating everything.Awesome service and highly recommended!
    Rob K
    Rob K
    17:29 27 Aug 20
    Excellent service and technical expertise.
    Bill Deiss
    Bill Deiss
    18:48 24 Aug 20
    I highly recommend Trademasters, everyone that I have been in contact with have been very polite and very professional. I never felt like they are in super rush to get me off the phone or when they came to do the job. It's awesome to have a company that makes sure you have been taken care of with your satisfaction. Super company!!!
    Lisa Pardon
    Lisa Pardon
    18:41 19 Aug 20
    A Saturday air conditioner emergency was the reason for the call. I am so grateful to the technician that came and helped me out. He was very professional and knowledgeable and resolved my problem quickly. I owe him a big thanks for getting my AC working before the 100 degree days started!
    18:58 20 Jul 20
    I have worked with Trademasters through my job. Such great staff, wonderful techs and quality work! Grateful to have a local company that does so much to help the community! Thank you!
    Linda Patterson
    Linda Patterson
    18:53 20 Jul 20
    We had our air conditioning go out unexpectedly on a weekend. I called first thing on a Saturday morning, and a technician came out later that same morning. He was able to get the system back working in the morning, but in the afternoon we heard a sound that indicated a further problem. We called and the technician came out again that same day, was able to do some additional diagnostics and determined that a bear in the motor had gone. While Trademasters was not able to fix it that day, they called first thing Monday morning and got a technician out to replace the motor. We have a regular service agreement and they only charged us for replacing the motor. I very much appreciate the expertise and professionalism of the technicians and prompt response from the support staff. I will definitely stay with Trademasters.
    Scott Hatch
    Scott Hatch
    14:40 18 Jul 20
    Trademasters' staff worked diligently to diagnose and solve my problem. They took extra care to be sure they were pursuing the most cost effective fix, including a "second opinion" visit at no charge. The staff were pleasant and professional, and the price was fair.
    Jeremy Fretts
    Jeremy Fretts
    17:07 16 Jul 20
    TradeMaster. From the first moment Shane Allen walked into my house and game me the estimate I know I can trust them. He Diddy push me to buy he did not called me to book his service instead he gave me space for me to think about it. Few days later after I spoke with my wife we decided to move forward with TradeMaster/Shane. Do you know how horrible is that during the summer you ac broke down! That’s exactly what happened to me. But after I booked the service they came next day and reemplace my units for a new one within 7 hours. Those people now how to get the job done professionally, fast and clean. Thank you so much for your amazing services and for faster response to my emails. You guys are the best. If you need this services don’t look no further I highly recommend it. Best,Sony,Owener of SVC FILMS, LLC
    SVC Films
    SVC Films
    21:04 15 Jul 20
    Phil was amazing! Very experienced, taught me a lot. Fixed everything we asked for and provided lots of advice along the way. 5 star service!
    Amanda Wheeler
    Amanda Wheeler
    00:07 15 Jul 20
    Our experience with Trademaster was a very welcome exceptional experience in replacing our HVAC system. We had contact with five representatives/technicians for the entire process. All were most professional in presenting the information we requested to the actual installation. With the average daily temperature reaching 90 degrees, the time for replacing our system was important. From the initial request for an estimate to the installation, Trademaster folks did it in a little less than three weeks. We certainly would recommend Tademaster Services to anyone needing HVAC or plumbing service
    Randy Brandt
    Randy Brandt
    18:51 09 Jul 20
    I recently had two service calls on the same day: one to do the yearly checkup on the HVAC and another to replace 2 toilet levers. AJ and Devon were technically savvy, professional, helpful and courteous. The company is lucky to have such outstanding employees.
    marianne garman
    marianne garman
    17:39 19 Jun 20
    Trademasters provide courteous , professional, and timely service from day one. The sales representative was patient and ensured that appropriate technical experts answered all of my questions. Even when the inevitable technical challenges arose, Trademasters resolved the issues in a manner that was advantageous to me. I most highly recommend this company.
    Colton Talley
    Colton Talley
    20:23 24 Mar 20
    We love Trademasters! Whether it was for planned improvements, like a new AC unit before the start of summer, or same-day repairs when the furnace died during the coldest days this winter, Trademasters has been wonderful to work with. Pricing is reasonable, with no upselling. We recommend them to everyone.
    Jenn Rafael
    Jenn Rafael
    17:23 04 Feb 20
    Excellent service from Trademasters and their outstanding technician Devon Houston. Devon showed up to install a new water heater but ended up dealing with the building’s issues that were complicating things. He did a fantastic job efficiently and professionally.
    Joseph Barta
    Joseph Barta
    17:18 28 Jan 20
    Gabriel was my technician and he was awesome. Very courteous, informative, and knowledgeable. He answered all my questions in layman's terms. The company was easy to deal with and gave me a courtesy call 10 minutes before my technician got there to let me know he was on his way. I highly recommend this company.
    Molly Jenkins
    Molly Jenkins
    22:35 21 Jan 20
    This week, we had our hot water heater replaced by Trademasters. We are long time clients of this company and, after pricing different providers for this installation, we decided to have them accomplish the job. Devon was our technician and I was so impressed, I sent a message to the company! Devon was not only very capable and efficient, but just such a great guy! He went way above and beyond helping me to clear the area around the hot water heater location, was kind and thoughtful and just a joy to have about for the duration of a pretty complicated job. I highly recommend Trademasters after years of dealing with this company, and I certainly recommend Devon Houston as one of their best representatives! My sincere thanks for a job well done!! ?
    Melodie Syah
    Melodie Syah
    00:41 21 Jan 20
    We had a total of 5 estimates for replacement of a heat pump and air handler for our townhouse. We found a wide range of prices, as much as $800 between them. We chose Trademasters, which was in the middle of that range, in part because they installed a furnace/ a/c in another home for us and have done fall and springs checks since then. They had always been easy to work with and schedule. That system is still working well. We had the townhouse checked out when we purchased it. David was the technician. He did a great job, explained everything about the heat pump and air handler, what potential problems we might have and the new R-ratings for coolant. The hardware was very dated (1985 and 2004), so when it had problems later, we had Trademastesr prepare an estimate. The estimator, Shane, like David, gave us cogent and detailed information and explained what he thought our best choices were. Chris (crew leader), Stephen, and Luis did the installation. They called ahead, were on time (early, even), watched out that the muddy outside did not come inside, even put up with the rambunctious puppy with grace. They worked straight through until the work was done and the house was heated, just before the unusual very cold spell that occurred in November 2019. Kudos to all of them. We would fully recommend Trademasters.
    Karen Randall
    Karen Randall
    23:06 22 Nov 19
    Trademasters provides some of the best service for a reasonable rate I know. Usually, you can’t trust plumbers or HVAC technicians but these guys are the real deal and the owner Dave is the kind of guy you hope to have as a neighbor!
    Derek Archer
    Derek Archer
    19:32 29 Sep 17
    dave kyle president and ceo of trademasters

    We know that when we build the team the right way, our customers really notice the difference. We’re dedicated to our co-workers, because together, we will create something great.

    – Dave Kyle | President/CEO

    We’re passionate about delivering exceptional service with every customer visit.

    We look forward to earning your confidence and trust every day.

    • We’re committed to excellence and always have our customers best interests at heart.
    • We’re proud to attract and retain the area’s most skilled and highly-qualified technicians.
    • You can always rely on Trademasters to be punctual and professional.
    • We take safety, security, and cleanliness seriously. We treat our customers like part of the family.


    Areas We Offer Residential Heating and Air Conditioning Services

    Fairfax County
    Prince William County
    • Dale City, VA 22193
    • Triangle, VA 22172
    • Dumfries, VA 22026
    • Woodbridge, VA 22191–22195
    Arlington County
    Loudoun County
    • Ashburn, VA 20107; 20147-20148
    • Dulles, VA 20166
    • South Riding, VA 20152
    • Sterling, VA 20164-20165

    Trust us to be there when you need help. Call the Trademasters team today.

    (703) 644-6400

    Or complete the form above.