Cool Sunshine Heating and Air Conditioning, Inc.
HVAC contractor in Denver, CO.
In the words of Cool Sunshine Heating and Air Conditioning, Inc.
Established in Denver in 1996, Cool Sunshine Heating and Air Conditioning offers residential heating and air conditioning services. Their team of skilled technicians specializes in maintenance, repair, and installation of high-efficiency HVAC systems, ensuring year-round comfort for your home.
- Trade
- HVAC contractor
- Business address
- 4395 Oneida St, Denver, CO 80216
- Telephone
- (303) 287-1846
- Website
- cool-sunshine.com
- Hours
-
- Monday7:00 am - 8:00 pm
- Tuesday7:00 am - 8:00 pm
- Wednesday7:00 am - 8:00 pm
- Thursday7:00 am - 8:00 pm
- Friday7:00 am - 8:00 pm
- SaturdayClosed
- SundayClosed
From the business's Google listing, checked Oct 2026
- Register
- CO register
Recorded as supplied and as found in public sources. This register makes no credential or quality claim about any business; check license status with the state board.
Google Reviews
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Aldo was a 10/10 experience. He was so friendly, funny, and quick! Our A/C was up and running in a matter of minutes once he diagnosed the issue, he gave me long term maintenance advice, and even educated me on filters. I’ll absolutely be keeping them on file for any furnace or HVAC issues!
Alexis T.
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These guys are the real deal! You won't be disappointed!
Suez Z.
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Aldo, Israel and Miraj came and installed my new heating and air conditioning system this week. They are simply amazing. They were very professional. Aldo explained how to use my new smart thermostat and he was a great teacher. They worked quickly and efficiently. They left my garage cleaner than it was before. This company is very trustworthy and they provide great service.
Cheryl H.
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Had an issue with my thermostat stating “please connect to wall”. It was! Called in the morning to make an appointment and they came the same day!!! Everyone was so pleasant and professional, from making the appointment to replacing my thermostat. Israel was very professional, knowledgeable and they were very reasonable in their costs. My sister has used them for years (20+) and had recommended them for their reliability, professionalism and honesty. These days, seems hard to find a company with these values. Definitely recommend them!!
Michelle R.
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The technicians were fantastic. They were very caring about what I wanted. They were kind, courteous and hard working. They were able to complete a different project in one day. They turned a project I dreaded into a simple project. I am very appreciative for a job WELL DONE!
Jodie O.
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First we had a mid stream AC unit that took a bit to get parts for. Once we replaced the AC unit, quick response considering the heat and great follow up by Israel
Thomas P.
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Our service worker was Aldo. We had a basic cleaning and inspection as our AC unit had not been turned on for several years. He was very professional, honest & knowledgeable. While he gave us pointers on how to keep our AC unit running smoothly and what to pay attention to if it starts to have problems, we had a fun conversation about Denver back in the day with Robo Mike making the conversation. Turns out our unit was in good shape and just needed the cleaning only. I would definitely use Sunshine cooling again. Thank you, Aldo!
Eli V.
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Israel came over to take a look at our air conditioning units because our house wasn’t cooling enough. He was incredibly knowledge, friendly, explained everything he was doing and why. 100% would request him again.
Marcia M.
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I had used this company once in the past, and had an unfavorable experience this year with them. I had them come to address a minor AC issue, and their technician did not properly diagnose the issue, and their “fix” did not address our issue. I requested a follow up, and their management committed to getting someone out a few days later. Their technician never showed up, and their team will not follow up with us even after leaving voicemails to come back to address our issues. I would not recommend this group, as there are better companies in the area than this one. They did not refund our previous expenses, and they lack professional experience and courtesy for customers.
Ken W.
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Our family has used Cool Sunshine for generations. They are responsive, friendly, helpful and do very good work. I can't say enough good things about them and their team. Highly recommend!!
Lisa K.
About Cool Sunshine Heating and Air Conditioning, Inc.
Cool Sunshine's residential HVAC work
Cool Sunshine Heating and Air Conditioning began in Denver in 1996. The company describes its work as residential heating and air-conditioning service, including maintenance, repair and installation of high-efficiency HVAC systems.
The company offers air conditioning, indoor air quality, heat pumps, ductless mini-split repair, boiler maintenance, HVAC repair, and installation and replacement. It also recommends furnace tune-ups in early fall and air-conditioning tune-ups in spring.
Repair, maintenance and installation options
The company says its technicians carry parts in their vehicles for HVAC repair. It also says it provides 24/7 emergency service and offers financing plans for HVAC work.
Cool Sunshine is open from 7:00 am to 8:00 pm Monday through Friday, with Saturday and Sunday closed. Reviewers commonly discuss technician communication, diagnostics, maintenance visits, thermostat work, repair response, and heating and air-conditioning installations.
Colorado License #231249.
Denver heating and cooling conditions
In Denver, utility gas heats 61% of housing units, per the American Community Survey's 2024 figures. NOAA normals for 1991-2020 give Denver an average temperature of 51.6°F, an average high of 65.7°F and an average low of 37.6°F.
The company says it serves the Denver metro area and has done so for more than 25 years.
Services, brands and warranty details come from the company's own website. Ratings, hours and reviews come from Google. Town figures come from the US Census and NOAA.
More HVAC contractors in Denver
About Denver
| Population | 740,613 (2025) |
|---|---|
| County | Denver County |
| Average yearly snowfall | 41.3 inches |
| Heating degree days | 5,678 |
| Most common heating fuel | Utility gas |
Sources: U.S. Census Bureau. NOAA U.S. Climate Normals 1991-2020.