About us
Great Guys is the Denver Metro Area’s Premier Choice for Heating, Cooling, & Electrical Service, Repair, and Installation.
Who We Are
Family owned and operated by father daughter team Marcus & Maddy Fauth, Great Guys has quickly become one of the leading HVAC companies in the Denver Metro area. With a focus on consumer education, service integrity, fair pricing, employee satisfaction, and customer retention Great Guys has now become one of the fastest growing companies in the industry. With over 30 years of experience, customers have come to depend on Great Guys’s certified technicians for the highest quality of service, delivered in the most professional manner, at prices that are affordable.
There’s a reason people say “I know a great guy,” when asked for a trusted service referral. The Fauth family, including newly joined Jacob, Marcus’ son, hope that their company embodies everything that this remark means when you ask a trusted friend or family member for a referral. When you call Great Guys you know a trusted expert will arrive on time, and provide you with invaluable education and recommendations, optimal equipment, fair pricing, professional service/installation, and a maintenance plan that ensures your systems are operating efficiently year round.
Nothing gives me more pride than taking excellent care of our employees and community. My daughter works harder than most men I have ever met, Great Guys, should’ve been called heroic women – in a male focused industry having a COO that is a woman, brings a great advantage to our company and the community we serve.
-MARCUS FAUTH, FOUNDER

Schedule an Appointment
Family Owned
Experienced Licensed Professionals
Master Electrical License
Master HVAC License
24 Hour Emergency Service
Maintenance Plans Available
Services Offered
Residential & Commercial
Heating
Cooling
Electrical
Air Quality
WHAT our satistied customers have to say
I came away with the impression that he is exceedingly competent, and he explained various aspects of the unit and what he was checking for and doing to it as he went along, which I appreciated. If his repairs are anything like his maintenance check ups, I doubt if you can find a much better technician for the money. I highly recommend him!
-Chip Edwards
-Mackensey H.
-Keith F.
The Great Guys Guarantee
Our HVAC professionals will build the right heating system for your home and budget.
Free Estimates
Highest Installation Reviews And Products

Space Heaters Available
10 Year Parts And 5 Year Labor / Install Warranty
Our company is also accredited by the Better Business Bureau, is top-rated on Home Advisor, and featured on Angie’s List. Our team is focused on helping you efficiently resolve issues with your current air conditioning system, or helping you make efficient cost effective decisions for system upgrades, using the most reliable equipment. A cool home in the warmest months makes all the difference.
Communication is priority one for Great Guys. You will be contacted to confirm scheduling, before your appointment, and as technicians develop a HVAC service plan or installation upgrade recommendations for your home.