Cool Sunshine Heating & Air Conditioning has proudly provided professional heating and cooling services throughout the Denver Metro area since October 1996. As a family-owned and operated HVAC company, we bring more than 25 years of hands-on experience to every furnace, air conditioner, heat pump, and indoor air quality project we complete.
Our owners are actively involved in daily operations, ensuring consistent quality, transparent communication, and dependable workmanship. Our highly trained technicians service all major brands and specialize in energy-efficient heating and cooling systems designed to perform reliably in Colorado’s climate.
From routine HVAC maintenance and emergency repairs to full system replacements and high-efficiency installations, homeowners across Denver trust us for honest recommendations and long-term comfort solutions.
When you need reliable HVAC service in Denver, CO, you can depend on our experienced team for professional results and personalized care.
Ready for reliable heating and cooling service in Denver, CO? Call 303-287-1846 or use request service online to schedule your HVAC appointment with our experienced team today.
Air Conditioning Services
Need fast, reliable air conditioning repair in Denver, CO? If your air conditioner has stopped working, isn’t cooling properly, is leaking, or struggling to keep up with the summer heat, the licensed HVAC professionals at Cool Sunshine Heating & Air Conditioning are ready to help.
We provide complete air conditioning services in Denver, CO, including:
- Air conditioning repair
- Air conditioner installation
- Air conditioning replacement
- Seasonal air conditioning service and maintenance
Our team services all major brands and delivers honest recommendations based on your system’s age, condition, and efficiency. Whether you need fast AC repair in Denver, CO or a full air conditioning system upgrade, we restore comfort quickly and professionally.
Avoid DIY repairs that can cause further damage or reduce system lifespan. Instead, trust experienced technicians who ensure your air conditioner operates safely and efficiently.
Learn more about air conditioners
Ductless Mini Split Installation & Repair
Ductless mini split systems provide flexible, energy-efficient heating and cooling for homes in Denver, CO. The HVAC specialists at Cool Sunshine Heating & Air Conditioning offer professional ductless mini split installation, repair, replacement, and seasonal service to ensure reliable year-round comfort.
Mini splits are ideal for home additions, finished basements, garages, and older homes without existing ductwork. If your ductless system is not heating or cooling properly, making unusual noises, or experiencing reduced efficiency, our experienced technicians can quickly diagnose and resolve the issue.
- Ductless mini split installation
- Ductless mini split repair
- Ductless system replacement
- Ductless system maintenance and service
Whether you're installing a new system or upgrading an aging unit, we help homeowners throughout Denver, CO choose high-efficiency ductless solutions designed for Colorado’s climate.
Learn more about ductless systems
Furnace Services
When temperatures drop in Denver, CO, you need dependable furnace service to keep your home safe and comfortable. The heating professionals at Cool Sunshine Heating & Air Conditioning provide expert furnace repair, installation, replacement, and seasonal maintenance to ensure reliable performance all winter long.
If your furnace is making unusual noises, failing to heat evenly, cycling frequently, or causing rising energy bills, our experienced technicians can quickly diagnose the issue and recommend the right solution. We service all major furnace brands and focus on improving efficiency, safety, and long-term reliability.
- Furnace repair
- Furnace installation
- Furnace replacement
- Preventative furnace maintenance and service
Whether you need a fast repair or are considering upgrading to a high-efficiency heating system, we help homeowners throughout Denver, CO maintain consistent, energy-efficient comfort.
Experiencing heating or cooling issues in Denver, CO? Call 303-287-1846 or request service online to schedule prompt HVAC service with our experienced team.
Heat Pump Services
Heat pumps provide energy-efficient heating and cooling for homes in Denver, CO. The HVAC specialists at Cool Sunshine Heating & Air Conditioning offer professional heat pump installation, repair, replacement, and routine service to help homeowners lower energy costs while maintaining year-round comfort.
If your heat pump is not heating or cooling properly, running constantly, making unusual noises, or causing rising utility bills, our experienced technicians can quickly diagnose the issue and recommend the right solution. We service all major brands and focus on performance, efficiency, and long-term reliability.
- Heat pump repair
- Heat pump installation
- Heat pump replacement
- Heat pump maintenance and seasonal service
Whether you're upgrading from a traditional furnace and air conditioner or replacing an aging system, we help homeowners throughout Denver, CO choose high-efficiency heat pump systems designed for Colorado’s climate.
HVAC Maintenance & Seasonal Service
Regular HVAC maintenance helps homeowners in Denver, CO keep their heating and cooling systems running efficiently year-round. The experienced technicians at Cool Sunshine Heating & Air Conditioning provide comprehensive HVAC service designed to reduce breakdowns, improve energy efficiency, and extend system lifespan.
Our maintenance services include detailed system inspections, safety checks, cleaning of critical components, filter evaluations, and performance testing. By identifying minor issues early, we help prevent costly repairs and unexpected system failures during peak heating and cooling seasons.
Whether you rely on a furnace, air conditioner, or heat pump, routine HVAC service ensures consistent comfort and reliable operation throughout Colorado’s changing weather conditions.
Indoor Air Quality
Indoor air quality plays a critical role in the health and comfort of your home in Denver, CO. The HVAC professionals at Cool Sunshine Heating & Air Conditioning provide customized indoor air quality solutions designed to reduce allergens, airborne contaminants, and indoor pollutants.
Our IAQ services may include advanced air filtration systems, whole-home air purifiers, humidity control solutions, duct cleaning, and high-efficiency air filter upgrades. Improving airflow and filtration can help reduce dust buildup, eliminate odors, and create a healthier indoor environment.
Whether you're concerned about seasonal allergies, wildfire smoke, dry indoor air, or general air circulation issues, we help homeowners throughout Denver, CO improve comfort and breathe cleaner air year-round.
Learn more about indoor air quality
Zone Control System Installation & Repair
A zone control system allows homeowners in Denver, CO to independently control temperatures in different areas of the home for improved comfort and energy efficiency. The HVAC specialists at Cool Sunshine Heating & Air Conditioning provide professional zone control system installation, repair, and system upgrades for both existing and newly built homes.
If certain rooms in your home are consistently too hot or too cold, zoning can help balance airflow and eliminate temperature inconsistencies. Our technicians evaluate your current heating and cooling system to determine the best zoning configuration for optimal performance.
Whether you're adding zoning to improve efficiency or need service for an existing system, we help homeowners throughout Denver, CO enhance comfort while reducing unnecessary energy use.
Learn more about zone control systems
Reliable HVAC Service for Homes Throughout Denver, CO
From historic homes near Washington Park and Capitol Hill to newer developments in Central Park and Green Valley Ranch, Cool Sunshine Heating & Air Conditioning proudly serves homeowners throughout Denver. Whether you’re located near Cherry Creek, the Highlands, Sloan’s Lake, Downtown Denver, or the Denver Tech Center, our experienced team delivers reliable heating and cooling solutions designed for Colorado’s climate.
Ready for reliable heating and cooling service in Denver, CO? Call 303-287-1846 or use request service online to schedule your HVAC appointment with our experienced team today.
“⭐️⭐️⭐️⭐️⭐️
We had a fantastic experience with Aldo, our service technician. After another company told us our furnace was beyond repair and needed to be replaced, Aldo came in, took a thorough look, and discovered the issue was simply a blown fuse. He replaced it quickly and had our furnace running in no time—saving us thousands of dollars.
What really stood out was Aldo’s professionalism and transparency. He took the time to explain everything clearly, walking us through what had gone wrong and how he fixed it. His honesty and attention to detail were incredibly reassuring. It’s rare to find someone so knowledgeable and genuinely committed to helping customers.
Highly recommend Aldo for anyone looking for trustworthy, top-notch service.
Matt”
“I have a wonderful history with this company since initially using them for a complete renovation ten years ago. Since that time, they have continued to perform at the highest level of quality professional service. They operate more as a family than a business and their attitude is reflected in every technician they employ. And, they always seem to go above and beyond whether it’s a routine scheduled maintenance or an emergency.
Highly recommended without reservation.”
“Aldo and Israel were fantastic in leading a team to get our old AC unit out and a new one in. Courteous, efficient and completed in one day. Most grateful to them and the entire staff at Cool Sunshine”
“Another Company had inspected my ac unit shortly before Israel took a look at it and recommended a new evaporator coil, compressor, and motor-blower; however, Israel was able to provide clear guidance that my system was not experiencing any issues and would continue to work just fine with some minor cleaning and repairs. His advice saved me thousands. I will be a Cool Sunshine and Israel advocate and customer for life.”
“We've been working with Cool Sunshine since 2009. Service has been impeccable, specifically working with Israel. He defines professionalism, care, impeccable work, work ethic and integrity. I learn something every time he comes, which ensures confidence that our system is consistently running smoothly. Israel approaches every service as if it were maintenance on his own home. Cool Sunshine says it's dedicated to building lifelong relationships, and with employees like Israel you have our commitment. Thank you to Israel and cool Sunshine.”
“Israel was fantastic. Very professional and very thorough”
Excellent experience. I felt that the technicians were professional, efficient, and courteous.
“Cool Sunshine installed and has maintained our heating and cooling systems for over ten years. The owners are extremely knowledgeable, and you know they are good at running their business when the "new guy" has been there for 9 years and staff are not just good at what they do, but love what they do. Can't say enough good things. Just, thank you.”
Courtesy and professionalism of our Phone Representatives
Timeliness in responding to your needs
Knowledge and expertise of the Salesperson
Communication and follow-up from the Salesperson
Courtesy and professionalism of the Installation Team
Expertise and workmanship of the Installation Team
Condition of the work area after job completion
Was the warranty discussed with you?
YES
Were our maintenance agreements explained to you?
NO
What brought you to our company?
INTERNET
Please select your top 3 reasons for choosing our company:
SALESPERSON,
PRICE,
FIRST IMPRESSION
Comments: Top-notch company. Courteous, professional, and got the job done efficiently. Saved $6,000.00 in rebates too. Can’t be beaten!
-Pamela K