4sdc hvac maintenance-thermos1ZThermostat Replacement

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.



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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.


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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.



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1/8 hp, 1100 RPM, 2.3 amps, 115V 1000 RPM; 5-Speed; Ball Bearing 42YZ Frame, 1/2″ Diameter x 5″ shaft Ball Bearing; Rotation CCWLE 1 Year Manufacture Warranty – See more at:


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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


Honeywell Valve Actuator VC Models and ALLTEMP AQUASTAT – 3 WIRE

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HVAC Maintanance