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$29 Furnace Tune-Up Special!

Award Winning Technicians

St George Utah Heating and Air Conditioning

  • Satisfaction Guaranteed
  • Top Customer Reviews
  • Upfront Pricing = No Surprises
  • Locally Owned & Operated
  • Licensed, Bonded, & Insured
  • Financing Available

marika watters
15:52 18 Feb 20
Luckily only a simple problem with my furnace but these guys were amazing. Very nice, professional and knowledgeable. Got my heat working again in no time. Thanks again.read more
16:51 10 Feb 20
Very impressed with Parker when he stopped by to provide an estimate for a whole house humidifier. He knows his stuff. Unfortunately the existing utilities in our house makes the installation too difficult. Hope to have them replace an AC unit in another property we own.read more
17:51 10 Jan 20
Fast, reliable & affordable!Parker was on the job within the day to replace my furnace. Everything was explained. I dealt directly with Parker the installer. No middleman any questions I had were answered by Parker. What a great company to work with. This how a business should operate.read more
sheburm .
20:06 04 Nov 19
Excellent experience working with Parker to replace our entire A/C unit. Parker knows what he is doing. Black Diamond easy to schedule appt., flexible hours, great communication. I needed a high quality, middle-of-the-budget-line unit and that is what I got. I'm very happy with Black Diamond Heating and Air Conditioning!read more
Erika Stephenson
22:05 07 Sep 19
We woke up at 3 am to water dripping through our ceiling. Black diamond was at our home that afternoon to diagnose the problem with our AC. Within 2 days it was fixed. Our repair man was super friendly and got the job done quick. Hopefully we don't have any issues again, but if we do, we will for sure use black diamond again!read more
Jim Roberts
23:16 28 Jul 19
Fantastic response on a very hot weekend in St George to fix my air conditioning. Thank you to Parker at Black Diamondread more
gabbie floro
19:40 07 Jun 19
Chris pedraza sr and his team were amazing they answered all of my questions and did an excellent job.read more
Peggy Rudd
02:23 10 May 19
Parker was so kind and helpful! He explained everything so well! Would highly recommend Parker and Black Diamond to everyone!read more
Jason Ryser
18:51 09 May 19
Was staying at my uncles second home in St George, and the AC quit working. I needed the ac repaired asap, so I called Black Diamond Heating and Air. They came out within a couple hours, and had me operational within 4 hours. Cant say enough about their fast and professional service. Very impressed.read more
Barbara Bigelow
03:54 27 Mar 19
The service was excellent! They were on time, very professional, and answered all my questions. I will definitely use them again!read more
Patricia Yanzon
11:39 21 Mar 19
Excellent customer service,very professional and they did an amazing job . My house is too old I have to do a liner in my sewer line . They matched competitors prices and they’ve done the job in 2 days in and out no headaches and no excuses. I’m really happy. Thank youread more
Barbara Marshall
19:51 18 Mar 19
Had a very good experience with Black Diamond. Needed a new HVAC system. They were polite and on time. They were done within the timeframe they had given me. The unit is working well. Thank you Black Diamond.read more
Ashley Wiggins
22:29 04 Mar 19
What an awesome company! Lance came in and did a tune up on our heating and air system. He found a small issue with our contactor, showed me a photo of what he had found, explained why it was a concern, wrote up a quote and even offered to clean up the small amount of dust that'd fallen from the attic. He was professional without being pushy. I'd highly recommend them!read more
Rocky Martinez
18:45 28 Feb 19
Amazing service! Black Diamond Experts sent Lance to clean our furnace. He did a thorough job, didn’t rush, walked us through each step, and gave us a wealth of knowledge for maintaining our furnace. The price was reasonable and he had parts to replace a few things on our current unit already with him. He was not pushy and tried to offer us the most economical options. He was so polite and wasn’t there to make a sale but rather to help us out. Thanks Black Diamond Experts!read more
Ann Nafus
01:33 28 Feb 19
Black diamond came out and was amazing. My furnace quit on me. The technician came out the same day and got me up and running. I am so grateful for them. The price was reasonable too.read more
Tatiana Wood
20:11 25 Feb 19
Lance with Black Diamond was amazing. Came when they said he would and helped get my furnace working again. He also showed me some additional things that will help keep my heating costs down. Thanks Black Diamond!!read more
Next Reviews Write a review

When it is hot in St George, Utah, we understand the urgency of getting your A/C repaired and working at its highest potential fast. No one likes being caught in the sweltering heat. We service all major brands of air conditioners.

If you are trying to keep your energy costs low and like the idea of having a “green solution” to heat and cool your home throughout the year, then a heat pump may be your answer. Heat pumps can both cool and heat your home.

Our expert HVAC technicians have the knowledge and training to get your furnace repaired, maintained, or replaced. We service all major brands of heating units. We also provide annual furnace inspections and tune ups to make sure you’re comfortable during the winter.

Increase your wellness with a whole home humidifier. A whole house humidifier is a great option if you are concerned with or dealing with dryness issues or are tired of dealing with portable one room humidifiers.

Expert Team of Technicians


Fair, Honest & Upfront Pricing, No Surprises

Before we begin a job our licensed furnace and AC technicians will give you upfront pricing, so you will not have any surprises with your HVAC project. Our technicians will arrive ready to complete your repair or provide you with the information needed to make a qualified decision on a new air conditioner or furnace installation.

Customer Satisfaction is Priority – We Guarantee All Our Work

If you should have any issues with worked performed by Black Diamond Heating and Air, you can rest assured that we will make the situation right. Just give us a call.  You can learn more about our warranty and satisfaction guarantee on our Black Diamond Service Guarantee page. We have a high reputation standard and strive to be fair, honest, and trusted by our customers. Our numerous positive reviews testify of our commitment to our customers.

No Job Is Too Small – So Give Us A Call!

Whether it’s a furnace repair, air conditioner tune-up or new HVAC system installation, call Black Diamond Heating and Air! We are prepared for the tough and technical jobs. We are troubleshooting experts. No matter what your home or business heating or air conditioning issue is, we have the proper training, equipment, experience, and knowledge to locate and repair your service problem for a fair price.

St George, Utah’s Expert Heating and Air Conditioning Team
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The Black Diamond Heating and Air team in St George is ready and waiting to help with all of your HVAC needs. When you need any A/C repaired, a home furnace repair, or central air installation, contact us for a job well done. If you’re in St George, we’re your heating and air conditioning repair specialists!

Air Conditioning and Heating Service Plans

With our financing—there are affordable options for everyone. Our financing process includes an easy application and quick approval. 


You might consider trying out the Diamond Service Plan that will ensure your heating and air conditioning systems throughout the year. This package includes an annual furnace tune-up, annual A/C tune-up, a reduced emergency service fee for A/C repairs, priority service, a waived regular hour dispatch fee, and a 10% discount on services. You can rest easy knowing that your HVAC systems are functioning at their highest capacity with this package.


If something goes wrong—we’re just a call away! Having regular tune-ups and services will help your HVAC run more efficiently and last longer. The Diamond Service Plan saves you money and comes with loads of guarantees—include a three-year replacement guarantee, the “no lemon” guarantee, satisfaction guarantee, workmanship guarantee, and more.


Air Conditioner Repair St George

Whether you need an A/C installed or repaired, Black Diamond Heating and Air has got it covered. Those St George summers can be tough to handle—they are unbearable without a high functioning air conditioner. At Black Diamond Heating and Air, we service all major brands of air conditioners. Our experienced team of expert technicians have seen it all. Don’t suffer through the summer heat without A/C any longer than you have to. Call Black Diamond Heating and Air to get your air conditioning running asap!


A/C Tune-Ups St George

Get you’re A/C tuned up before summer hit to avoid those long, miserable nights without cool air. At Black Diamond Heating and Air, we recommend getting a tune-up at least once a year. This will ensure that your air conditioner is functioning at its best, it can also help you’re A/C to last longer with fewer hiccups. We have a 20-point checklist for our A/C tune-ups to ensure the best quality air conditioning for your home.


Air Purification St George

Avoid indoor air pollution with whole-home air purification. Whether you want a small purifier to focus on a single room or a whole-home air purification system, Black Diamond Heating and Air can do it. Fresh air has many health benefits, particularly for those with asthma, allergies, or other respiratory issues. Improve the air quality in your home in no time at all.

We offer financing options with approved credit.

We offer financing options with approved credit.

Read Our Latest Blog Posts

Service Update

Covid 19 - Service Update  Yes, we are open! The health and safety of you, your family, and ours is foremost on our minds. Even though we are all social distancing, the Utah State Governor has labeled us as an essential business for Utahns, providing top-tier heating,...

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Is it time to replace your air conditioner?

Similar to the upkeep on a car, at some point you have to weigh out the cost of repair on your air conditioner vs the cost of replacement. We’ve compiled a list of 4 questions to consider when making the decision whether to continue to repair an air...

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Call us now!


Call us now!