Your satisfaction is guaranteed at Johnny Stubbs Services

Heating & Air Conditioning Service in Denver Colorado

At Johnny Stubbs Services, we use only the highest quality products to ensure that your heating and air conditioning system runs efficiently and lasts for years. Our team of air conditioning repair & installation experts is dedicated to providing consistently superior service that will keep your AC unit or heating system running smoothly. With our knowledge and experience, we can help you make the best decisions for your home or business when it comes to heating and cooling.

Opening Hours

Mon – Fri: 8:00AM – 06:00PM

You Can Find Us

9457 S University Blvd
Unit 821
Highlands Ranch, CO 80126

Call Us

Broken Air Conditioner or Furnace? No Problem!

We’ve been repairing central air conditioning systems and cooling systems in the Denver metro area for decades, and we understand the importance of getting your HVAC system back up and running quickly and providing great service at a reasonable price.

Our professional staff is well-trained in all major types of air conditioners and furnaces, making us the go-to company for Denver homeowners. We use diagnostic equipment to identify what’s wrong with your entire system so that your air conditioner repair or furnace repair can be made correctly the first time, and we provide emergency services so that you aren’t stuck baking in the summer heat or freezing in the cold.

To schedule a service call with our HVAC technicians, give us a call today and we’ll be sure to take care of all your heating and air conditioning needs. We look forward to helping you keep your home or business comfortable year-round!

Johnny Stubbs


Why Choose Johnny Stubbs Services?

Whether you’re looking for heating or cooling services, we provide outstanding services at competitive rates, and we are dedicated to providing excellent customer service. We understand the importance of getting your HVAC system up and running quickly and efficiently so that your home or business is comfortable year-round. Our commitment to quality products and services has earned us a reputation for being one of the top heating & cooling companies in Denver Colorado. Our installation and repair services include:

Air Conditioning Installation & Repair

We keep your AC system running strong with routine HVAC service & maintenance, AC repair, HVAC repair, furnace repair & maintenance, and more!

Furnace Installation & Repair Services

We will keep your heating or cooling system running as designed by the manufacturer, along with making sure it works on the days you need it most.

Humidifier Installation & Service

Ensuring your home is humidified correctly will improve not only your home’s comfort but the health of your home.

Thermostat Installation & Replacement

No matter what you need, want, or like, we have you covered with a vast line of controls to give you control over your system and comfort.

Water Heater Installation & Repair

We have you covered from replacing your current system to upgrading you to the next level of on-demand water heaters.

Boilers And Hydronic System Snowmelt

From keeping your house comfortable to ensure systems are working as designed and installing new systems to increase efficiency and convenience in your home.

Outstanding Service

Customer Satisfaction is our #1 Priority

Get a Free Quote

Larry C.
Larry C.
Pleasant and professional to work with. I really appreciate the honesty. Did a great job installing my furnace and AC after my last one died. John was...
Linda B.
Linda B.
I was worried that my humidifier system needed servicing, but when John Lennon came, he made a thorough exam and said everything was fine. My house is 30...
Andrea K.
Andrea K.
Johnny Stubbs to the rescue again. With the cold temps setting in my really old furnace decided to call it quits. John acted fast and worked with me to get...
Dianne S.
Dianne S.
I highly recommend John Stubbs and his team. They put in a full house humidifier that changed our lives. They also did our radiant floors. They are...
Matthew Z.
Matthew Z.
Johnny is thorough, punctual, and personable. He really restored my hope in calling service people out to the house. He answered on the first ring and then...
When you see companies with tons of 5 star reviews, you wonder if it's real. Well, with Johnny Stubbs, you can see why they have so many top reviews. The...
Nicole T.
Nicole T.
Service was great, honest and quality workmanship! Communication was timely. Highly recommend.
Aaron L.
Aaron L.
What a treat dealing with John and his tech, Jon Watson. They were prompt (I'm not used to 30 minute windows rather than hours). It turned out our cooler...
Steve Stratton
Steve Stratton
The owner truly cares about providing great customer service and doing the right thing for his customers.
Great customer service. We have used this company 3 times & each time they have done an excellent job!
Laura Jerdak
Laura Jerdak
Excellent service. They are quick to schedule. John, the owner, is very knowledgeable and made sure I was informed of everything he was doing. I initially called to get a smart thermostat installed and he ended up helping me with so much more, including getting the humidifier we had in our house from previous owners up and running, and getting me some of our specialized air filters. I ended up having him come back to install an air purifier. A+ - will use again and highly recommend.
Katie LaCasse
Katie LaCasse
We were having issues with our furnace and it needed replaced. They came out fast and replaced our furnace & Ac at a very affordable price! I highly recommend
What a great experience with Johnny Stubb’s Mechanical. Our A/C was not working properly and we called based on other recommendations. Everything from the initial call to the service appointment was very friendly and professional. It was refreshing to use a service provider who was reliable and honest.
Matt came out last minute and replaced a whole house fan and crawlspace fan. Went above and beyond the call of service! So happy we found Johnny Stubbs Services!
Ame McCann
Ame McCann
Love these guys. They’re honest and quick to reply. Definitely recommend them! Especially to our blue family! Thanks so much for always being so quick to respond and so very courteous!
I was so impressed with my experience! My AC was fixed within a day of me calling in, and I received a follow-up call a week later just to make sure everything was in working order.
Hillary Morris
Hillary Morris
Matt came out on time, and hung a heavy pewter chandelier with ease. And did it all within an hour. Best service ever! Will be back! Thank you for taking the time to put it up. So happy!
Steve Marzuke
Steve Marzuke
I've used John and his team for a few years now and can't express enough how happy we are with the products and services they have provided. If you are looking for a very dependable, fairly priced HVAC Contractor that does top notch work then look no further than John and his team at Johnny Stubb's.
Our heat went out on the coldest night of the year and John came so quickly and fixed our heat and got us up and running again. We were really panicking for we had two young infants In the house. I will call him again and again
BoBa Li
BoBa Li
John came out early this morning in a short notice, diagnosed and fixed our furnace issue. He was very professional, polite, and did an excellent job! Will definitely recommend to others.


Littleton CO AC & Furnace Repair | Trusted HVAC Service

Maintaining your AC and furnace is necessary to ensure the comfort of your family regardless of the weather. Don’t wait until the season changes to get your heating and cooling system repaired. Schedule a maintenance call-out and have your AC and furnace tended to and keep your home comfortable all year long.


Need Your Air Conditioner or Furnace Fixed? Call Our HVAC Pros!

Finding an HVAC contractor that provides exceptional repair, maintenance, and installation services might seem like an arduous task. While many companies offer these services, only Johnny Stubb’s Services guarantees excellent workmanship, great customer experience, and service that you can trust from a company that believes in providing only the best for you and your family. 

We know the frustration of suffering an HVAC breakdown when you least expect it, and we have a number of tailor-made solutions to fit your pocket. Our technicians will keep you informed every step of the way and strive to restore your HVAC system to its former glory in no time at all. 

We guarantee:

  • Superior customer service
  • Efficient repairs using only the best quality products 
  • Regular feedback on all processes and costs

Operating in the Highlands Ranch, Colorado, area, Johnny Stubb’s Services are highly recommended, and we have over 1,000 happy customers who will vouch for our incredible service. 

From regular maintenance to repairing even the trickiest fault or break, our team of highly-trained and qualified technicians is well-placed to assist you with all your HVAC needs. 

At Johnny Stubb’s Services, your comfort is our top priority, and we offer a range of services that will restore your comfort, and your sanity, in no time at all. We offer prompt service, so give us a call and see just what we can do for you.


Get Your Air Conditioning or Heating Repaired ASAP | Call Today!

Don’t delay, and give us a call today to help maintain or repair your HVAC system. We offer quick, reliable service, giving you complete peace of mind that your HVAC system is in tip-top condition. 

Why wait for disaster to strike when you can call us anytime for all your repair and maintenance needs? Don’t let yourself be caught in a situation where you realize that your system is not working when you need it the most by having even the smallest issue attended to as it happens. 

With budget-friendly services to suit any pocket, Johnny Stubb’s Services will maintain and repair your HVAC system to ensure that you are comfortable all year long. 

No problem is too big or small to handle, so call us today and experience superior service the first time, every time. Our workmanship is guaranteed, so feel free to read our customer testimonials to see just how many happy Johnny Stubb’s Services customers there are that will recommend our services. 

Call us for an obligation-free quote or to schedule an appointment with our highly-qualified team to fix your HVAC issues once and for all.

[WPSM_AC id=3899]