Chicago High Efficiency Furnaces, Furnace Service and Repairs
Chicago furnace repair 

We service, repair and maintain all types and brands of furnaces including Carrier, York, Lennox, Bryant, Rheem, American Standard, Trane, Luxaire, Amana, Goodman, Janitrol, and more...

Featuring Rheem High Efficiency Furnaces:
Chicago Rheem Furnaces

RGFG Series

Rheem Prestige Series™ Communicating Modulating Upflow Gas Furnaces equipped with the Comfort Control² System and Contour Comfort Control®

 The Rheem Prestige Series™ 90 Plus Modulating Gas Furnace equipped with the Comfort Control² System™ is seldom “off” and seldom “on” at 100%. Your Rheem Prestige Series™ 90 Plus Modulating Gas Furnace equipped with the Comfort Control² System™ is so quiet, you may never know it’s on. And it’s so frugal with both gas and electricity, that it has perhaps the highest overall efficiency* of any furnace.


  • The Comfort Control² System™ provides over 28 on-board diagnostics and fault history codes by detecting system and electrical problems. “Call for Service” alert notification is sent to the thermostat to alert the homeowner of required service
  • Serial Communication Enhanced – When installed with a Serial Communicating Condensing Unit and user interface control (RHC-TST550CMMS) 500 Series thermostat this unit offers 4 or 2 wire installation, auto-configuration, and diagnostic messaging with full communicating capability
  • Heat exchanger is constructed of all stainless steel for maximum corrosion
    resistance and thermal fatigue reliability
  • Modulating Function: when used with a modulating or communicating thermostat, modulation rate between 40% and 100% of total capacity
  • Two-stage Function: when used with a two-stage thermostat, furnace operates at 40% on first stage, and stages up to 65%, then 100% for second stage
  • Multistage Function: when used with a single-stage thermostat, furnace functions as a three stage furnace operating at 40%, 65% and 100% of total capacity
  • Reduced firing rates, electrically efficient ECM2+ motor, and solid doors provide the ultimate in quiet operation
  • Low speed constant fan
  • Constant temperature rise for superior comfort
  • Seven segment LED for system diagnostics
  • Diagnostic history for troubleshooting
  • Two-speed induced draft motor
  • Direct spark ignition with remote sense
  • Optional indoor or outdoor combustion air.


(773) 777- 4888

RGFG Series
Chicago Rheem 90 + Furnace service 


Heat Exchanger Warranty - Limited Lifetime

Conditional Unit Replacement Warranty - Limited Lifetime (Registration Required)

Limited Parts Warranty - 10 Years


Up To 96% AFUE



We service all brands and types of residential and commercial furnaces and systems.