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HVAC & Plumbing Service Company in Tucson, AZ

If you live in Arizona, you likely already know that AZ is one of the hottest places in the United States, with the 10th highest temperatures in the nation. Millions of people live, work, and play in our beautiful state, but it would be a lot harder to live, work, or play without the modern comforts of air conditioning!



Residential & Commercial Comfort Services We Provide

A large part of striving to be the best HVAC & plumbing company in Arizona involves serving ALL our customers’ needs. In order to provide the best service possible, we offer a wide variety of solutions to your HVAC problems. Browse our most popular AC services by clicking here, or find more detailed information!

Residential Air Conditioning

Air conditioning systems sometimes seem like they have a mind of their own — and often, they seem to “decide” to break down on the hottest day of the year. Don’t keep wiping away those sweat droplets. Contact our experts for AC repair, and we’ll be right there!

Residential Heating

As residents of Arizona ourselves, we know firsthand that life in The Grand Canyon State mostly revolves around staying cool. But even though we go many months without turning on the heat, it doesn’t mean our state never gets cold. On those chilly winter nights when your heater won’t turn on, you can always turn to our technicians for reliable heating services.

Emergency HVAC

Sometimes, repair can’t wait. When you need fast, effective solutions, we’ll be there in a flash for emergency HVAC service. If you’re experiencing an HVAC emergency right now, you can book service ASAP by clicking here.

Commercial Air Conditioning

Whether you work in a factory, a financial office, or a fulfillment center, a comfortable environment helps everyone stay productive. Book commercial AC services or get a price estimate for a repair job here.

Commercial Heating

Commercial buildings tend to get drafty and chilly, even during our mild winter days. If you need your commercial heating system serviced, let us know, and we’ll stop by to help ASAP.


From drain cleaning to water treatment to routine maintenance, our team can resolve any plumbing problems you may be dealing with. Call our plumbing experts today, and we’ll be there to help restore your plumbing system back to normal!

Why Choose Us

What Makes Us the Best HVAC & Plumbing Professionals in Tucson, AZ?

What makes our heating, air conditioning, and plumbing company the best in Arizona? We’re glad you asked! 

Here’s what sets us apart from other local HVAC and plumbing companies:

Premium Customer Service

Customer satisfaction is extremely important to us. We’re proud to have earned an “A+” rating from the Better Business Bureau, an “A” rating from Angie’s List, and hundreds of 5-star Yelp, Google, and Facebook reviews. We also have references available upon request if you’re interested in a specific service.

Superior Staff

One of the biggest reasons we’ve been able to keep growing and improving our HVAC and plumbing service company in Tucson, AZ, is our amazing team. We only hire the best HVAC and plumbing professionals in the industry. No matter what kind of problem you’re having with your cooling or heating system, you can be sure that our expert HVAC and plumbing contractors can get the job done.

30+ Years of Experience

We’ve been operating our heating and air conditioning company since 1991. That means we’ve been serving Arizona neighborhoods and commercial locations for over 30 years! We have experience with every type of HVAC unit you can imagine, from the oldest window units to the newest modern heat pumps and mini-split systems.

Affordable, Honest Pricing

Every time you call our HVAC contractors, you can expect a detailed cost estimate and price breakdown. You won’t find another HVAC and plumbing service company in Tucson, AZ, with this kind of affordable and transparent pricing! In addition, our technicians and installers do not rely on commissions. You can breathe easy knowing that we aren’t trying to sell you something you don’t need or charge you for something you don’t want.

Residential or Commercial Service Available

Have you been looking for a commercial HVAC and plumbing service company in Tucson, AZ? You’ve found the right team! Williamson’s Heating and Cooling doesn’t just partner with Arizona homeowners. Along with residential HVAC and plumbing installations, repairs, and maintenance, we serve a variety of local businesses in our community.


Areas Our Heating, Cooling & Plumbing Contractors Serve

Cool Willy’s Air & Plumbing is your local premier HVAC and plumbing service company in Tucson, AZ! We serve the greater Tucson area as well as the following communities throughout AZ:

  • Oro Valley
  • Marana
  • Saddle Brooke
  • Vail
  • Rita Ranch
  • Green Valley
  • Sahuarita
  • Catalina Foothills
  • Tortolita


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Providing Expert HVAC & Plumbing Services to Residential & Commercial Customers for Over 30 Years!

Your family deserves total comfort. That’s why you should rely on the best HVAC and plumbing company in the business. Cool Willy’s Air & Plumbing guarantees unmatched HVAC and plumbing service, whether you’re in Tucson, Oro Valley, Marana, Saddle Brooke, Vail, Rita Ranch, Green Valley, Sahuarita, Catalina Foothills, or Tortolita, AZ.

Are you ready to truly learn why we outperform all of the other HVAC and plumbing companies in Arizona? Contact our HVAC and plumbing service company in Tucson, AZ, and we promise to wow you with our work. Book service now by phone or online. We’ll be there soon!

Ryan VallergaRyan Vallerga
21:39 14 Feb 23
The best in town! The front office staff is communicative, fast, and easy to work with. Nick came out to do the diagnosis and later, the repairs. He was on time, very friendly, respectful, and efficient. Williamson’s heating and cooling fixed our furnace at a quarter of the cost that a competing company quoted us. I will definitely be using them again for any HVAC needs.
Len HughesLen Hughes
20:08 21 Jan 23
We recently had a new furnace and A/C installed. The installation took a crew of 3 and they did a superb job, it took a day, they cleaned up and we had heat on by late afternoon. After a couple of weeks Walter came out, checked the system, made an adjustment and everything is working fine. Walter worked on our A/C in the past and kept that 20 year old system running. Thanks to the whole Williamson team. Len
Laura BLaura B
21:04 15 Jan 23
I have used Williamson's for several years and always have great service. This most recent maintenance showed some troubling findings with my heating system. Walter was wonderful to explain what the problems are and what needs to be done going forward. He was very thorough and was patient with me asking numerous questions after writing me several quotes for replacing my entire system. I really appreciate him!
Paul HiltyPaul Hilty
19:33 19 Sep 22
Williamson's Heating & Cooling is the best Southern Arizona has to offer! Professional, honest and prompt. We LOVE our new mini split for our home office compared to the previous window unit we had. They really know what they're doing, highly recommend! #verynice
Team CrooksTeam Crooks
19:04 25 Aug 22
William son’s H&C has done wonderful work for me. I am on a service agreement, and they show me what’s going on with my AC in photos, and whatever they have completed. They make recommendations which I have found to be spot on. My most recent Tech was Nick Zimmerman. Young man was very personable, yet professional. I highly recommend Williamson’s Heating & Cooling.

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