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Serving Englewood, CO and the surrounding areas

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Comprehensive HVAC Services in Highlands Ranch, CO

Living in Highlands Ranch means experiencing the full spectrum of Colorado weather, from frigid winter nights that can plunge below zero to sweltering summer afternoons that push past 90 degrees. Your heating and cooling systems are not just conveniences — they are essential components of a safe, comfortable home or business. At Gustafson Heating & Air Conditioning, we have been serving our customers in Highlands Ranch, Englewood, and surrounding areas for more than 45 years. Since 1971, we have delivered quality customer service, reliability, and expertise in heating, cooling, and ventilation to our residential and commercial clients. That depth of experience means we understand the unique climate demands of the Front Range and design every solution with local conditions in mind.

As a Rheem Team Top 10 Contractor in the United States, we hold ourselves to the highest standards of installation quality, technical proficiency, and customer care. Our highly trained technicians and responsive support staff offer customized solutions to fit your budget, whether you need a routine tune-up on an existing furnace or a complete system replacement for a newly constructed property. Highlands Ranch homeowners and business owners trust us because we combine decades of hands-on knowledge with the latest industry certifications and equipment technologies.

Heating Services That Keep You Warm All Winter

Colorado winters test even the most robust heating systems. Furnaces, boilers, and heat pumps all require professional attention to operate safely and efficiently throughout the cold season. Our heating services cover every phase of ownership, from helping you select the right-sized unit based on your home’s square footage and insulation quality, through professional installation that meets all local building codes, to ongoing maintenance that extends the life of your equipment. We perform load calculations using Manual J methodology to ensure the system we recommend matches your property’s exact thermal requirements rather than relying on generic sizing estimates.

Regular maintenance is especially critical in Highlands Ranch, where altitude affects combustion efficiency and dry air accelerates wear on mechanical components. Our seasonal tune-ups include inspection of heat exchangers for cracks, verification of gas pressure levels, thermostat calibration, and airflow measurement across ductwork. The U.S. Department of Energy estimates that proper maintenance can reduce heating costs by up to 30 percent, and we see those savings reflected consistently among our customers who schedule annual service visits.

Cooling Solutions for Colorado Summers

While Colorado is known for its winters, summer cooling is increasingly important. Average summer temperatures in the Denver metro area have risen steadily over the past two decades, and Highlands Ranch properties with south-facing exposures or limited shade can experience significant heat gain. We install and service central air conditioning systems, ductless mini-split units, and evaporative coolers, tailoring every recommendation to the specific characteristics of your building.

Our cooling services include comprehensive diagnostics that go beyond simply checking refrigerant levels. We evaluate compressor amperage, condenser coil condition, evaporator performance, and electrical connections to identify potential failures before they leave you without air conditioning on the hottest day of the year. For homeowners considering system upgrades, modern high-efficiency units with SEER2 ratings above 16 offer dramatic improvements in energy consumption compared to equipment manufactured even ten years ago.

Indoor Air Quality and Ventilation

Highlands Ranch sits at approximately 5,900 feet in elevation, and the dry mountain air creates distinct indoor air quality challenges. Low humidity can cause respiratory irritation, cracked woodwork, and static electricity issues. We offer whole-home humidification systems that integrate directly with your existing HVAC equipment, maintaining optimal humidity levels between 30 and 50 percent throughout the heating season. Our ventilation services also address air filtration, duct cleaning recommendations, and fresh air exchange systems that reduce indoor pollutant concentrations.

What Sets Our HVAC Service Approach Apart

Our process is built on transparency and technical rigor. When you contact us for HVAC service, every visit follows a structured methodology designed to deliver lasting results rather than temporary fixes. Here is what you can expect during a typical service appointment:

  • Complete system evaluation including visual inspection, performance testing, and safety checks on all major components
  • Detailed diagnostic report explaining current system condition, any identified issues, and recommended next steps in plain language
  • Customized repair or replacement options presented with clear explanations of benefits, efficiency ratings, and expected lifespan for each solution
  • Professional installation or repair performed by certified technicians who follow manufacturer specifications and local code requirements

We believe every Highlands Ranch homeowner and business owner deserves an HVAC partner who listens, educates, and delivers dependable comfort year after year. Whether you are facing an emergency breakdown or planning a proactive system upgrade, Gustafson Heating & Air Conditioning is here to provide the expertise and personalized attention that have defined our work since 1971. Contact us today to schedule your next service appointment and experience the difference that more than four decades of dedicated HVAC craftsmanship can make for your property.

Serving Highlands Ranch, Englewood, and surrounding areas

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Heating Service, HVAC Service & AC Service in Highlands Ranch, CO

HVAC Service in Highlands Ranch, CO | Heating Service

AC ServiceHVAC ServiceHeating Service ∴ Highlands Ranch, CO

Special Offers

Put your worries behind and work with the local experts, Gustafson Heating & Air Conditioning Inc.

More special offers

$50 Off IAQ

*Restrictions Apply

Indoor Air Quality products to include Humidifiers, air scrubbers, UV lights, ERV, HRV, air cleaners, whole home ventilation.

Disclaimer: Coupon CAN NOT be used for Diagnostic or Service call. Can not be combined with other offers. Must be applied at time of booking.
$50 Off Qualifying Repairs

*Restrictions Apply

We repair all makes and models of HVAC equipment. Furnaces, air conditioners, heat pumps, mini splits.

Disclaimer: Coupon CAN NOT be used for Diagnostic or Service call. Can not be combined with other offers. Must be applied at time of booking.
$50 Off Ductwork

*Restrictions Apply

Proper duct systems improve airflow, balance temperature differences, and improve system performance.

Disclaimer: Coupon CAN NOT be used for Diagnostic or Service call. Can not be combined with other offers. Must be applied at time of booking.

Customer Reviews

Leave a review More reviews

Gary W.

WOW, what a great job Gustafson Heating and Air Conditioning did for my wife and I. They were professional, fast, and way less expensive than the others we looked into. We really appreciate what they did. It was in the winter when our furnace broke down and they replaced it immediately. They left our home clean and warm and we will appreciate the cool air this coming summer. THANK YOU Mike and your team!

Kristina C.

I received a number of quotes to install a whole home humidifier. Gustafson was amazing from start to finish. I was able to handle everything over the phone without needing an additional in-person quote with a number of upcharges. I spoke to a gentleman who walked me through options by seeing pictures of my setup and was extremely knowledgable on what was necessary to ensure I was getting the correct humidifier for my home. The pricing was extremely competitive compared to the others and was not full of hidden charges. When I called, they were able to get an appointment set up within a week. The service tech was on time, courteous, cleaned up after himself, and walked me through the whole setup.

Svein R.

I got three quotes for a heat pump and gas furnace back-up. Gustafson’s was the most competitive. In addition, Mike McCarthy was, and is, a gem; very knowledgeable and responsive. The other Gustafson employees on the job were courteous and professional. I am very pleased with the equipment and the installation, which was a difficult one. I highly recommend Gustafson!

Meagan P.

Gustafson installed our HVAC system in 2019 and have been so great with service! They’re honest and back up their work. Recently our A/C wasn’t cooling to the set temp. Todd was so kind & diligent in teaching us what to do as homeowners, but also servicing/cleaning the mechanics and we’re back to a nice, cool home just in time for higher temperatures!

Scott H.

Purchased a mini-split (AC / Heat Pump) unsure if I’d be able to install it or not. I installed most of it myself but there were a few technical procedures I didn’t have the expertise or tools to undertake. Dillon came out and finished the job, doing top-notch work and taking in account the aesthetics of the unit inside and out. Very reasonable price as far as I’m concerned. My new go to neighborhood HVAC company.

David R.

Basement flooded. This is where my WFH office is, so it was a big deal. Gustafson sent out Todd to fix it. He got it fixed quickly, and charged me a very reasonable fee. Basement is warm and dry now. I can’t say enough good things about Gustafson.

Steven B.

The technician “Luis” was fantastic as usual. All the services and technicians we have used with Gustafson over 12 years have been prompt, professional, timely and reasonable over the years. I definitely approve of this vendor!!!

William R.

Our furnace went out and our regular company gave us a 2 week window for coming out. We have a RHEEM furnace and needed an authorized RHEEM dealer. I called Gustafson and they came out in 48 hrs. They were so nice and the technician –Dylan–was so helpful that I am switching companies. Really a great experience.

Sonja L.

Absolutely the best!!!! This is an honest company with very professional people working for them. The price for all work is always very fair and very reasonable!!!

Krista B.

I had the whole HVAC system installed by Gustafson about three years ago and recently requested maintenance on the system. Technician Robert Gomez was the tech that responded and he was very personable, easy to talk to, and explained what he was doing to me to service my furnace. I felt like I received thorough service and he provided advice for the future as well. Thank you, Robert!! I hope to be able to request you again in the future to do maintenance on my AC next spring.

Code of Ethics:

  • Providing services at or above accepted industry standards
  • Providing exceptional customer service and supportive, long-term relationships with our customers
  • Ensuring that Honesty and Integrity are the hallmark of all of our business practices and services
  • Improving through continuing education and training

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Our team of expert HVAC technicians are ready to assist you, 24/7. No job is too big or small: We come prepared. Put your worries behind and work with the local experts, Gustafson Heating & Air Conditioning

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Gustafson Heating & Air are expert HVAC professionals trained to take care of any comfort issue you may have!

We’re a Lennox Dealer and are trained to deliver a level of comfort and service that exceeds customer expectations. Because Gustafson Heating & Air understand that actions speak louder than words, instead of just talking quality, we practice it through listening and responding to your comfort needs.

Industry-Leading Products

As partners with the leading name in home comfort, Lennox has the best products available in the industry, including highly efficient systems from the Dave Lennox Signature® Collection made here in the United States.

Highly rated for customer satisfaction

In order to sell Lennox products, Gustafson Heating & Air must consistently meet and exceed customer expectations. To ensure we do that, we are trained to design, install, service and maintain HVAC systems. We are dedicated to achieving complete customer satisfaction and must maintain a 4-star rating among consumers.

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Highlands Ranch, CO