D.R. Kohlman sells, installs and services heating, cooling and ventilation equipment from many of the top home comfort and indoor air quality equipment manufacturers in the world.



Trane Heating, Cooling and Air Cleaning Systems

Ameristar Heating and Cooling Systems 

GeoComfort Geothermal Systems

HI-Velocity Mini-Duct Heating and Cooling Systems

Mitsubishi Electric Zoned Heating and Cooling Solutions

Viessmann Boilers

Warmboard Radiant Subfloor

Roth Industries Radiant Floor Heating

Empire Comfort Systems Direct-Vent Heaters and Fireplaces

Renewaire Energy Recovery Ventilation Systems 

Aprilaire Air Purifiers, Humidifiers and Dehumidifiers

Santa Fe Free-Standing High Efficiency Dehumidifiers 

Second Wind Germicidal Object and Air Purifiers 

Honeywell Programmable and Wi-Fi Home Automation Thermostats; Humidifiers


Our service and installation technicians receive specialized training through apprenticeship programs in sheet metal fabrication, pipe fitting, and heating and refrigeration service, as well as on-site training at manufacturers’ training centers. We are proud to maintain the designations of Trane Comfort Specialist, and Mitsubishi Electric Diamond Contractor:


Trane Comfort Specialist

Trane Comfort Specialist

The designation of Trane Comfort Specialist is earned by continuing to meet the highest Trane standards for customer satisfaction and continuing education. Our technicians are trained to guide you in selecting the best Trane comfort system for your home, and provide expert installation, maintenance and service.


Mitsubishi Electric Diamond Contractor

Mitsubishi Electric Diamond Contractor 

Our certification as a Diamond Contractor indicates the highest level of accreditation, awarded to professionals who have developed exceptional expertise through years of experience, and extensive hands-on training at a Mitsubishi Electric approved training center.