Residential Heating
For over 20 years, Karolyi’s Heating and Cooling has provided heating and cooling services to Metro Detroit homeowners and businesses. Karolyi’s is an authorized Comfortmaker dealer but we also sell and service all brands.

Furnace and Water Heaters Inspection and Tune-up


  • Clean flame sensor
  • Check filter
  • Clean drain trap (if applicable)
  • Check for carbon-monoxide leaks
  • Verify furnace is safely operating
  • Visually inspect electrical connections
  • Check control board for service error codes



Furnace Replacement

Karolyi’s Inc. is an authorized Comfortmaker dealer. A typical residential furnace replacement can be completed in one day. Furnace replacement includes a chimney liner if an 80% efficient furnace is installed. If upgrading to a 90% furnace, replacement includes new intake and exhaust. It also includes upgrading exhaust piping and electrical to code. We remove and dispose of your old furnace and install a new unit.

You may consider upgrading your indoor air quality equipment by adding a UV disinfection light, humidifier, and HEPA filters.

Preventative Maintenance

The service provided after completion is just as important as the installation! Our highly trained service technicians will create a customized preventative maintenance program to keep your equipment running at peak performance.

Key benefits of preventative maintenance include:

  • Fewer emergency calls
  • Lower maintenance costs
  • Longevity of equipment
  • Consistent safety check-ups
  • Less down time
  • Energy efficient operation
Take care of problems before they affect your equipment. Call Karolyi’s today and set up an appointment.