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    Request a Service

    Hvac sales, service and installation for montgomery Co & p.G. Co, md

    • Shemtov Systems offers free estimates for system replacement. We will analyze your existing system, recommend a replacement that will best meet your needs and give you a price quote.
    • We will personally install your new system according to manufacturer’s instructions, local codes and provide you with a warranty on all parts and labor for up to two years.
    • 24 hour seven days a week phone service. We service most brands and models of residential and commercial systems.
    • Emergency service is available after hours and on weekends.



    Based on the season and manpower, emergency and after hours service may be available between 5 pm and 8 am Monday through Friday, 12 pm and 8 am on Saturday, and all day Sunday.

    • We consider after hours services an extension of our normal work day beyond 5 pm. after hour service will be billed at 1.5 times our normal rate.
    • Emergency service, is a call that is initiates after we have completed the work day, or all day on Sundays and holidays. Emergency call will be billed at twice our normal rate.

    SPRING pre-season air conditioning system checkup

    • Inspect overall operation of the air conditioning unit
    • Check air filters
    • Check condensate drain lines and flush as necessary
    • Check condensate pump for proper operation
    • Check refrigerant level
    • Check the condenser and evaporator coil
    • and clean as necessary
    • Check all electrical connections
    • Check contactors and capacitors
    • Check temperature difference across the evaporator coil


    FALL pre-season heating
    system checkup

    • Inspect the gas line
    • Inspect the chimney
    • Inspect the burners for proper flame
    • Inspect heat exchanger for signs of cracks
    • Inspect all limits and protection circuits for the furnace
    • Inspect the pilot, spark ignitor, or hot surface ignition operation
    • Inspect and clean air filters
    • Inspect airflow and adjust dampers
    • Inspect and tighten all high voltage connections
    • Inspect and tighten all low voltage connections
    • Inspect overall sequencing and operation of the furnace

    Additional Inspections
    for Heat

    • Check refrigerant level on heat pump
    • Check the defrost cycle
    • Check the condenser and evaporator coil
    • Check all electrical connections to the outdoor unit
    • Check all contactors and capacitors
    • Check temperature rise across
    • the evaporator coil
    • Check overall sequencing and operation of the heat pump

    We Service

    The following areas for HVAC, Heating
    & Air Conditioning Services for both
    Commercial & Residential

    • Bethesda
    • Chevy Chase
    • Gaithersburg
    • Germantown
    • Kemp Mill Maryland
    • Olney
    • Potomac
    • Rockville Maryland
    • Silver Spring
    • Wheaton MD
    • To the full list
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