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For most comfortable and reliable heating we offer a full line  
of gas furnaces including Carrier and Bryant, shown here.
We are standing by ready to help you select the best system.

Call Now! 240-355-3333


Shemtov Systems offers full line of energy efficient gas and propane furnaces.
Call our knowledgeable technicians today to help select the best furnace for you.
We will give you advice on everything needed for a safe and correct replacement

Evolution® Variable-Speed Gas Furnaces

  • AFUE rating up to 98.3%
  • Two-stage gas value type

Preferred™ Series Variable & Multi-Speed Gas Furnaces

  • AFUE rating up to 96.5%
  • Two-stage gas value type

Legacy™ Line Fixed-Speed Gas Furnaces

  • AFUE rating up to 95%
  • Single-Stage gas value type


Evolution® Series Gas Furnaces provide quiet, smooth, whole-home comfort. You’ll hardly hear it running as you get cozy with up to 98.3% AFUE savings. Features including variable speed airflow or Perfect Heat® technology can keep you comfortable year round.

  • Gas Efficiency Up to 98.3% AFUE
  • Electrical Efficiency Excellent
  • ENERGY STAR® The Model 987M meets the ENERGY STAR®
    guidelines for high efficiency in select sizes.
  • Heating stages Modulating operation for load matching
    and the highest energy efficiency



Gas is a highly efficient fuel, so you get a good return on every unit of energy. Modern condensing boilers, which use hot flue gases that are wasted in a standard boiler, have very high efficiency. Some are now 90% or more efficient.

  • Forced air
  • Maximum AFUE available…up to 96.6%
  • Part of the Infinity System

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