Enter your information
and we will contact
you shortly:

Remember: the fields marked with
an asterisk (*) are required.

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.


Emergency and after hours service is available between 5 pm and 8 am during the winter, 6 pm and 7 am during the summer Monday through Saturday and all day Sunday.

  • We consider after hours services an extension of our normal work day beyond 5 pm in the winter, 6 pm in the summer and will be billed at 1.5 times our normal rate.
  • Emergency service is an after hour service call that initiates after we have completed the work day or on Sundays and 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