Colorado HVAC Services, Inc. was founded in January, 2005 by three Level III HVAC Journeymen with over 100 years of combined experience in the commercial and industrial HVAC industry: Terry Monks, Mark Schermerhorn and Michael Demny.  In the past 10 years, our company has grown from five technicians to eighteen technicians with increased gross sales year after year.  We have a small, but highly motivated and highly productive office support staff and a no-frills, tightly run company that helps keep our overhead lower than the typical HVAC contractor.  We are then able to offer our high quality services at a fair price.  Read about our founders' experience and training that help make us the company for all your HVAC needs:

> Level III Refrigeration Certified Journeyman

> CFC Certified

> Carrier Factory Trained

> York Factory Trained

> Siemens Factory Trained

> Completed over 100 chiller teardowns and rebuilds

> Completed numerous seminars and equipment training programs.

> OSHA Certified

> Asbestos Safety Training Certified


Mike has worked in the trade for over 25 years and services equipment from 5000 tons down.

> Level III Refrigeration Certified Journeyman

> Completed over 100 chiller teardowns and rebuilds

> CFC Certified

> Carrier Factory Trained

> McQuay Factory Trained

> HVAC Instructor for the Union Apprenticeship Program for 10 years.


Completed numerous seminars and equipment training programs.

OSHA Certified

Asbestos Safety Training Certified


Terry has been working in the trade for 40 years and services equipment from 3000 tons down to 50 tons.

Terry Monks

Project Manager

Our story | our people


Mike Demny

Field Supervisor

Mark Schermerhorn

Field Supervisor

> Level III Refrigeration Certified  Journeyman

> CFC Certified

> OSHA Certified

> Asbestos Safety Training Certified

> CPR Certified

> Carrier Factory Trained

> Trane Factory Trained

> McQuay Factory Trained

> York Factory Trained

> Honeywell Factory Trained

> HVAC Instructor for the Union Apprenticeship Program for 15 years.


Completed training for every major control manufacturer including Johnson, Siemens, Honeywell, Barber-Coleman, Temptrol, and Mammoth.  Completed training for every major boiler manufacturer including Ajax, Rite and Bryan.  Completed training for every major fan manufacturer including Joy, Flakt and Woods.  Completed numerous other seminars and equipment training programs.


​Mark has worked in the trade for over 35 years and services equipment from 3000 tons down.