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Breathe Easy.

Residential/Light Commercial Refrigeration Service

Restaurants    Bars     Food Service

Air Conditioning, Heating & Electrical Solutions!

Commercial and Residential

    720 279-0030


We’re Committed To Old School Service.
The Right Way!


Whether you need a routine maintenance check or an emergency repair on a heating or cooling unit, we are available to handle  all of your all of your heating, cooling, ventilation, refrigeration, or hot water needs.  We continually strive to exceed expectations by ensuring that each  client receives the very best service.

Great Guys heating and cooling now offers full electrical services.

From the most simple switch and outlet replacements to additions, remodels, hot tubs, new circuits, lighting changes, ceiling fans, to full panel changes. Please call us for all your electrical needs in addition to your heating and cooling.

Choose us!​

We serve both residential and commercial clients and offer a variety of money-saving solutions. We combine our use of the highest quality parts and equipment, and our dedication to delivering  exceptional service to provide you with top quality service.

Affordable HVAC service

Upfront Pricing

Request a quote or schedule an appointment. Based on your service or system needs, we'll provide pricing.

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24 / 7 / 365 Days A Year

For emergency service, please contact us at your convenience. We look forward to serving you.

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Qualified Experts

Our team has years of experience, ready to serve your heating, cooling or commercial refrigeration needs.


See what our Great Guys clients say....

These may have been shorten - our Yelp has the complete quotes.

I couldn't find this company on Yelp to review them there where more people might see it, so I'll just do it here. I was referred to Marcus by my cousin who uses him for real estate transactions, and while all I needed him to do was a preventative check on my HVAC unit before the HOA turned the chillers on for the summer, he went above and beyond and fixed a minor irritating problem with the unit that had been bugging me for years, and his price was quite reasonable.

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

Great Guys Heating and Cooling was a referral from a friend. When my A/C unit stopped working on the hottest day of the year, I had another company come out and try to charge me my first born child as payment. Don't waste your time anywhere else! I repeat-DON'T call anyone but Great Guys. Marcus was so knowledgeable, extremely professional and most importantly honest. He told me exactly what was wrong and charged me a fraction of the price the other guys... the following day, I noticed the A/C still wasn't working to the best ... I called Marcus and he made it a point to be there that day and he noticed that a step had been overlooked, he quickly fixed it, owned it, and simply took care of it. No if's and's or but's about it. Just honest work and a honest apology. I will never use anyone else. I can't thank Great Guys enough.

  • Mackensey H. , Denver, CO

A cool breeze of a dream come true! After 6 A/C installation quotes, Great Guys held true to their name and stood out above the rest. Absolute pleasure dealing with Marcus. Extremely patient and just is an overall Great Guy! Very high level of integrity and wants to genuinely help provide the best application/solution that fits your setup & wallet. ...  I highly recommend Great Guys and will be having them tend to all my HVAC needs going forward. Shout out to the install crew, Maddy and Jordan! Flawless experience from the initial contact to when we sparked up that cool air flowing through those less noisy ducts that they helped me out with also!
  • Keith F, Denver 7/2018



Great Guys Heating, Cooling & Electric

5684 S Datura St
Littleton, CO 80120


Working Hours

24 hrs / day

7 days / week

365 days / year