Our Company

Our company is extremely experienced in the service, sales, installation and maintenance of all types of hydronic HVAC equipment. Our area of expertise is focused in multi-family housing buildings in the Washington DC, Maryland and Virginia Metropolitan Area.  With our full-line service company, you can be certain that your needs will be met in a timely manner by our skilled technicians. We specialize in troubleshooting problems with existing systems and provide the best and most cost efficient solution for you.  Our high-quality service and fair pricing is what sets us apart from the competition. Please feel free to look over our wide-array of services and call us to let us know how we can help you.

Service List

Fan Coil Unit Replacement

New generation of Fan Coil Units are designed to meet your needs for comfortable heating and air conditioning in your home. Quality Air Services qualified technicians will 

provide you with professional service during the installation including valve replacement without riser drainage and double pipe insulation with vapor barrier.

Different sizes of units are available in stock for immediate scheduling and installation. Corporate contracts are also available.

Riser Replacement


Quality Air Services specializes in turnkey riser replacement projects with minimal disruption to the residents.  

As part of our standard service, we even include Resident Relations.  This means that we will communicate directly with the affected residents through notice distribution, on-site project managers and an on-line portal for residents to log-in and view the schedule and progress of their buildings specific riser replacement project.

Pipe Freezing (ALL SIZES)

Quality Air Services offers freezing capabilities for up to an 8" pipe. This helps to avoid entire building system drainge and saves you money on your water bill and your water treatment chemicals.


Roof Fan Replacement


Think your roof mounted exhaust fan is old? 

Quality Air Services offers a full line of service and replacement to your exhaust fan.

Services include: motor replacement, cleaning, belt replacement, etc.

Thermostat Installation


We offer new line-voltage digital and analog thermostats that are the perfect fit for your room interior and easy to operate.

Varieties of most known American thermostats and controls manufacturers are available upon your request.

Custom Made Air Grills and Vents

                              Different sizes of aluminum grills are available for installation to replace the old, rusty and moldy grill on top of your convector or on the wall.

                              Each grill can be custom fitted to your unit. The standard colors are white and brushed aluminum.


Custom Water Leak Protection Systems

We offer custom made plastic water leak protection systems for any of your building’s specific needs. Primary pans, secondary pans, and pan inserts are custom molded as a retrofit option for your old fan coil units. 

If you find a stain of water or calcium on top of your car in the parking garage, please call and a Quality Air Services trained technician will come and take measurements of your parking space and install a pan upon the scheduled date.

Duct Cleaning

                              Our Company uses modern HEPA duct cleaning equipment to improve the quality of air in your home or building.

                       Qualified personnel will provide you with professional service. We specialize in dryer, kitchen, bathroom and air duct cleaning.


Fan Coil Unit (Convector) Cleaning Services

Our cleaning and preventative maintenance service targets all parts of the fan coil unit to ensure their proper operation and the longevity of life.

Cleaning procedures include:

  • Completely vacuum the units interior to remove debris that has built up
  • Clean the coil with non toxic germicides
  • Vacuum the fan wheel and motor
  • Replace filters
  • Install algaecide tablet into the secondary pan
  • Clean the primary drain pan
  • Check the unit for proper operation

Pipe Insulation Replacement

     We will replace your current deteriorated pipe insulation on the supply and return pipes going to your fan coil unit.

     This will ensure no condensation leaks in the hot and humid summer. Insulation is replaced with an additional vapor barrier set on top.

Old Equipment Refurbishing

Not quite ready to replace your entire fan coil unit?  Quality Air Services offers a full line of products to refurbish your existing equipment.

Replacement Coils



Replacement coil for fan coil units available in varieties of 3- or 4- row or heating and cooling with 4-pipe connection configuration.




Vacuum Molded Plastic Condensation Drain Pan Replacements and Inserts

Custom made plastic condensation drain pans are available upon request.

Please call with the model of your fan coil unit. Pans are vacuum molded and fabricated from ABS plastic.


Fan Coil Unit Grills

Different sizes of sophisticated aluminum grills are available for installation to replace the old, rusty and moldy grill on top of your convector.

Each grill is custom fitted to your unit.

The standard colors are white and brushed aluminum.



Fasco D289 motor for fan coil air conditioning/heating units is highly versatile and easily modified to replace the original equipment's motor. 


Features include: Thermally protected, 5 speed, 1/10 - 1/50 HP - 115 VAC - 3.6 - .6 Amp - Rotation: DS - "A" Diameter 3-1/4" - Any Shaft Angle - 1,050 RPM - Dual Shaft 10-3/4 x 1/2 x 10-3/4" -

Capacitor 5/370 - Motor Diameter 5.0" - Shaded Pole - Open Ventilation - Air Over - Re silient Base

Blower Wheels


Lau Double Inlet blower wheels are engineered to move forced air heated, cooled or ambient temperature.  Made of aluminum the forward curved wheels feature precise blade spacing and a Preslok® Center Disc.  

When used with direct drive motors these blower wheels provide quiet performance, long lasting durability and strength and consistency in alignment and balance.

Boiler Drain Valves


Boiler drain valves release any sediment, dirt or rust that may accumulate inside the convector coil over the years. We recommend these for ease of maintenance and longevity of the convector unit.

Features include: Rating 150 PSI WWP TO 200°F Non-Shock, Brass Body, Heavy Duty Pattern, Large water way, Adjustable Packing, Buna-N- Seats, Iron T-Handle, 100% Factory Tested

Metal Filter Frames

Galvanized metal filter frame is a permanent solution to the cardboard-framed throwaway filters. Just insert desired filter pad into the frame. 

Custom sizes are available.


Access Door Insulation

Black flexible elastomeric thermal insulation. It is furnished with a smooth skin on one side that forms the outer exposed insulation surface.

The expanded closed-cell structure makes it an efficient insulation. It is made with Microban® antimicrobial product protection for added defense against mold on the insulation.

It is also effective for reducing HVAC noise.



If you're looking for something specific and can’t find it here, e-mail us at sales@qualityairservices.com or call us at 301-770-8980 and we will help you find what you are looking for.

Consulting Services


Qualified professionals will consult you on how to prevent and protect your multi-family housing

from leaks and water damages caused by faulty or out-dated HVAC equipment.