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Residential HVAC

Heating & Cooling  |  Air Conditioning  |  Air Handlers  |  Products  |  Plumbing | 
Energy Efficient Retrofitting  |  Client Care Agreement

Call us today for expert ac repair, air conditioning service, ac installation, ac maintenance, ac replacement, ac sales, furnace repair, heat pump repair, heating service, heating sales in Lorton, Springfield, Fairfax, Arlington, Alexandria and all of Northern Virginia.

We offer Energy Star rated equipment to provide our customers with cutting edge technology and the highest possible efficiency. Our technicians are all highly trained, NATE-certified, bonded, and insured, so you can trust them get the job done correctly. Our services come with quality assurance and up front pricing.


Trademasters is a Trane Authorized Dealer that sells, installs, services, and repairs all Trane Residential and Commercial Products in Northern Virginia. We do not offer residential service in Maryland and DC.

Heating & Cooling

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

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

The dual fuel hybrid system uses the electric heat pump to heat your home in the more moderate temperatures and automatically switches over to gas during temperatures below freezing. The heat pump can sometimes heat your home more economically during the winter due to the reduced cost of electricity charged by the power companies in the colder winter months.

A heat pump also makes an ideal heating and cooling system for a basement remodel or a room addition due to the efficiency and lower upfront cost involved with installation versus a traditional gas heating and straight cooling system.

Air Conditioners

Types of Air Conditioners

There are many different efficiency levels and cooling capacities or “tonnage” of air conditioners available today, but all the different units can be divided into three distinct major types or categories; single stage, two stage and variable speed units.

Efficiency or SEER Rating

The efficiency or SEER rating of an air conditioner refers to how much electricity that particular unit will consume to keep you cool in a season. SEER is an abbreviation for“seasonal energy efficiency ratio”and it tells you how much electricity an air conditioner will consume over a typical season. The higher the SEER the less electricity a unit consumes in a season.

Tonnage or Capacity

The ton of an air conditioner is a rating of the unit's ability to remove heat from your home or business. A ton of cooling is 12,000 BTU’s and residential air conditioners are made in sizes of 1.5 ton to 5 ton in half ton increments.
In other words, a 1.5 ton air conditioner will remove the amount of heat the 18,000 matches would emit if they were all burning at the same time. The reason it is called a ton is that is the amount of heat (12,000 BTU) it would take to melt one block of ice weighing a ton in one hour. The job of an air conditioning contractor is determining the correct size or tonnage of a unit for you, and in this case it is not a matter of the more the better.
An oversize air conditioner will not remove the proper amount of moisture from the air to give you the comfort you deserve. An undersized air conditioner will run constantly even at moderate temperature and will not adequately condition the space. There are some air conditioners you can slightly oversize and still get very good dehumidification and those are two speed and variable speed units.A variable speed furnace will also help in having a system that not only keeps you cool, but dry also.

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 have to be large enough to cool you on the hotter days of the year and because of that, they are larger than needed on the moderate days. A good contractor selects a unit in the middle, as it is a bad idea to pick a unit sized that will handle a peak day when the bulk of the time we do not see peak temperatures.

Two Speed Air Conditioners

Two speed air conditioners have two distinct output capacities to better condition your home. These units have the ability to 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 are the very best air conditioners available and provide extreme comfort and moisture removal unlike any other system available. Instead of turning off and on all day causing temperature swings along with hot and cold spots, a variable speed unit has 700 different outputs to accurately and efficiently provide temperatures to 1/10 of a degree of what is desired.

Air Handlers

Air handlers are electric furnaces with integrated cooling/heating coils that are normally installed in conjunction with a heat pump. Air handlers distribute air equally throughout your home, heat your home 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 like there are different types of gas furnaces, there are different types of air handlers.

  • A single speed air handler runs at the same fan speed all the time, and then there are variable speed air handlers that vary their output by demand.
  • 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.

This system can remove 5-10% more moisture from your home than a standard single speed air handler. Air handlers typically have auxiliary heating elements which are installed by your contractor. These heating elements are available in different amounts of heat output. The heating elements provide heat on cold days to supplement the output of the heat pumps.


Trademasters is a Trane Authorized Dealer that sells, installs, services, and repairs all Trane Residential and Commercial Products in Northern Virginia. We do not offer residential service in Maryland and DC.

trane hvac products northern va

We service and repair all major HVAC brands like Carrier, Mitsubishi/Daikin, York, and Goodman heating and air conditioning products for your home and business in Northern Virginia.

Carrier productsDaikin productsYork products
Goodman productsmitsubishui electric

We encourage you to explore our site to learn first-hand about our quality products, our industry-leading warranties, and our commitment to providing high-quality heating and air conditioning products to consumers at an affordable price.

Plumbing Services

  • Gas, Electric or Tankless Water Heater Installation
  • Basement Build-Out, Bathroom, Kitchen, Garage & More
  • Faucet Install & Repair
  • Water Main Replacement
  • Garbage Disposal Install & Repair
  • Gas Pipe Install & Repair
  • Pipe Replacement
  • Toilet Install, Tune-Up & Repair
  • Sewer Line Install & Repair
  • Hot Water Installation Pump Furnished & Install
  • Sewer Ejector Pumps
  • Leak Detection
  • Water Heater Flush

Energy Efficient Retrofitting

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.

Client Care Agreements & Energy Audits

Our Client Care Agreement includes scheduled maintenance, which will keep your equipment running at peak efficiency, extend its life, and increase its reliability. Should you need emergency service, our CCA customers are given PRIORITY service and a 10% discount on repair services. Our experts can also conduct Building Performance evaluations and suggest ways to optimize climate control and resource usage for your particular needs.

The Indoor Environment and Energy Efficiency Experts | IE3