We’re here to keep homes comfortable throughout Casa Grande & Surrounding Areas. Expect nothing less than Excellence.
Mark of Excellence Heating & Air Conditioning is a local, family owned company with over 30 years’ experience. At Mark of Excellence we understand that your heating and air conditioning system is a large investment and we will work to help you protect that investment. We are dedicated to our customers and to providing the highest levels of customer satisfaction. We accomplish this by offering the highest quality equipment along with superior installation and service practices.


Experiencing issues with your air conditioner can be frustrating and uncomfortable, especially during hot weather. Mark of Excellence Heating and Air Conditioning offers swift, reliable repair services designed to quickly restore your comfort. Our certified technicians diagnose problems accurately, clearly explain necessary repairs, and provide transparent pricing, ensuring you’re informed every step of the way.
When winter hits in, don’t let your furnace leave you out in the cold. The experts at Mark of Excellence Heating & Air Conditioning can keep your system in shape so you can stay cozy and comfortable in your home all season long. Whether it’s time for annual maintenance to prepare your system for colder temperatures or you’re in need of an emergency repair, we’re ready to help. We’re also happy to help you weigh the benefits of a new system. At Mark of Excellence Heating & Air Conditioning, we can help you find and install a home comfort system that works for your home.


At Mark of Excellence Heating and Air Conditioning, we offer comprehensive HVAC solutions, including air conditioning installation and repair, heating system installation and repair, routine maintenance services, indoor air quality improvements, and ventilation solutions. Our technicians handle projects of all sizes, from residential homes to commercial rooftop units.
We pride ourselves on delivering superior service, quality workmanship, and unmatched customer satisfaction. Our experienced, highly trained HVAC technicians are dedicated to exceeding your expectations through timely responses, transparent pricing, and reliable solutions designed to keep your home or business comfortable year-round.
Yes, we offer tailored HVAC maintenance plans designed to maximize your system’s efficiency, longevity, and performance. Regular maintenance can prevent costly repairs, improve energy efficiency, and ensure consistent indoor comfort throughout every season.
We service, repair, and install all major HVAC brands and models. Our technicians are experienced and continually trained to handle a wide range of systems, ensuring high-quality workmanship regardless of the equipment you currently have or choose for installation.
Didi O'ToolTrustindex verifies that the original source of the review is Google. Mark is excellent!!!! This is the second time we have called him, he is alway available and on top of everything. Hayley at the office is a pleasure to work with also. Thank you Vickie SheppardTrustindex verifies that the original source of the review is Google. Newly retired and living in my AZ home again, I called Mark to service my AC unit -not cooling. He was friendly, helpful and thorough. Now, 4 yrs later I knew it was time to replace my 22 yo unit.I called Mark. Once again, he was friendly, helpful and thorough. He lent a window ac for my bedroom unti a new AC could be installed. His installers were just like him-friendly, helpful and thorough. This was a positive experience from beginning to end. I’d recommend him to anyone!! Lonnie MitchellTrustindex verifies that the original source of the review is Google. Another prompt, professional job by Mark of Excellence. First service by Peter, but same knowledgeable, thorough service we’ve come to expect from this local small business. Well done! Wayne KroppTrustindex verifies that the original source of the review is Google. Prompt, professional and friendly! Chuck KrauseTrustindex verifies that the original source of the review is Google. Peter was on time, serviced our unit and gave us a complete update. Excellent service and very personable at the same time. Wouldn’t have any other company look after us Dan BooneTrustindex verifies that the original source of the review is Google. I just had an A/C installed. I liked that they would send everything electronically and follow up over the phone. The owner and son made themselves accessible and answered all questions. There was no pressure to buy or purchase a service contract. They will meet with you at no cost and assess the project. The installers were on time and neat. They covered my stairs and kept me informed on the progress. David was the lead and was patient with me answering all my questions and explaining how the new unit works. Everyone was professional I would recommend them. L HarringtonTrustindex verifies that the original source of the review is Google. Polite, thorough, knowledgeable and professional. I would recommend his services to everyone. Estela GalindoTrustindex verifies that the original source of the review is Google. Love their service Leslie LashTrustindex verifies that the original source of the review is Google. I loved the team that completed the install. They finished early and left my home clean and cool! Mark is patient knowledgeable thorough and was easy to deal with. Mark matched the other offers and when i had a problem he came thru to make things work!!!!
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