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Premier HVAC Services in Allen, TX

Trusted for over 50 years, we deliver unparalleled HVAC solutions for both commercial and residential clients. Our commitment to excellence, combined with state-of-the-art equipment, ensures optimal comfort and energy efficiency for every project.

Expert HVAC Services in Allen, TX, and the Surrounding Areas


With over 50 years in the industry, our expertise is unmatched in both commercial and residential HVAC services.


We believe in honest work, transparent pricing, and delivering on our promises.


Continuously updating our skills and equipment, we ensure you get the latest in HVAC technology.


Your comfort is our top priority. We’re not satisfied until you are.

Exclusive Offers: Free Estimates, Financing & 10-Year Warranty!

Elevate Your Business With Our Commercial HVAC Services

At Moon Heating and Air Conditioning, we specialize in commercial HVAC services tailored for businesses in Allen, TX. Whether you’re looking to install, repair, or maintain commercial rooftop HVAC units, our team has the expertise to ensure optimal performance. With a legacy spanning over 50 years, we’ve seen it all and fixed it all. Our preventive maintenance plans are designed to catch potential issues before they escalate, saving you time and money in the long run. We understand the unique demands of commercial spaces and ensure that our solutions align with your business needs. When you choose us, you’re not just getting a service; you’re investing in a partnership that prioritizes your business’s comfort and efficiency.

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Ready for a Comfort Upgrade? Let's Get Started!

Moon Heating and Air Conditioning is your go-to destination for top-tier HVAC services in Allen, TX. We specialize in a wide range of services including commercial rooftop equipment, commercial refrigeration, residential installation, residential HVAC service, and mini splits. Our understanding of the importance of a comfortable living and working environment is unparalleled. Whether it’s the sweltering summer heat or the chilly winter nights, our team ensures your HVAC systems are running smoothly. Not only do we service all brands, but we also proudly sell top-quality American Standard & Goodman equipment. With over 50 years of experience, we’ve become the preferred choice for countless residents and businesses in the area. We take pride in our work, ensuring every job, big or small, is executed with precision and professionalism. Don’t compromise on your comfort. Reach out today and experience the difference.

Explore Our Wide Range of Services

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Commercial Rooftop Equipment

Our commercial rooftop equipment services are second to none. With a focus on commercial HVAC services, we offer comprehensive installation, repair, and preventive maintenance plans tailored for commercial rooftop HVAC units. Trust us to ensure your business's HVAC systems are always in peak condition.

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Commercial Refrigeration

When it comes to commercial refrigeration, we're the experts you need. Specializing in commercial refrigeration, we provide top-tier repair, installation, and service solutions for walk-in coolers, freezers, and reach-in units. Ensure your products stay fresh with our unmatched services.

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Residential Installation

At Moon Heating and Air Conditioning, residential installation is one of our core specialties. Our HVAC installation service ensures that homes in Allen, TX, and the surrounding areas enjoy optimal comfort. From AC systems to heat pump installations and gas heating & cooling, we've got you covered.

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Residential HVAC Service

Facing issues with your home's HVAC system? Our residential HVAC service is here to help. We offer comprehensive residential HVAC services, from urgent repairs to seasonal tune-ups. Whether it's a system malfunction or a routine check, we ensure your home stays comfortable year-round.

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Mini Splits

Mini splits are a versatile solution for varied spaces. We excel in mini split AC installation, ensuring efficient cooling for your space. Whether you're looking for top brands like Daikin, Friedrich, or LG, or need service and repairs, we're your go-to experts.

Areas We Serve

Serving Allen, TX, and beyond. Need HVAC expertise? Reach out now!

  • Allen, TX

  • Carrollton, TX

  • Plano, TX

  • Richardson, TX

  • Lewisville, TX

  • McKinney, TX

  • Dallas, TX

  • Collin County, TX

  • Frisco, TX

  • Wylie, TX


What Our Clients Are Saying


Jeremy Gulley

Very smart man and excellent tech with a lot of knowledge.



Wendy Shahub

Dennis Moon did an exceptional job assessing our A/C problem and repairing our Trane A/C. He has so much experience in his field of work. We really appreciate him and would definitely call on him again. I would recommend him without hesitation to anyone seeking A/C and ductwork repairs. Thank you Dennis Moon.



Chris J.


He was a rock star and it was a great service.



Kevin B.


It was good, he was on time and honest person.



Michael C.


I was very pleased with them and not a problem at all. They were very honest, very hard worker and they very meticulous to make sure that everything is working correctly.



David D.


It was excellent. They were efficient, they did a good job in a timely manner and it was great.



Charles B.


Dennis is an outstanding HVAC repairman. Trustworthy and honest. He stands by his work!



Stan J.


Without a doubt the best decision I’ve made in a long time was to contact Dennis Moon to come look at the units. It was on a Saturday evening around 7:00pm, and when we got home it was 87 degrees in our bedroom. I called the company that installed the units, but I felt that they saw an opportunity to take advantage of the situation I was in, and the prices they quoted were out of line in my opinion. The straw that broke the camel’s back was that they refused to confirm the appointment unless I gave them a credit card in advance. I declined, and went to Angie’s List to look for a solution. 10 minutes later I get a call from Dennis Moon, and he said he could be there within 30 minutes, and he beat that. The guy worked in our incredibly hot attic for close to 2.5-3 hours, kept coming out to let me know where he was, and then surprisingly, I hear him closing the attic stairs, and he proclaims it fixed. Long story short, this guy knows his stuff! Quick response, no overtime surcharge for a weekend call, and the final bill was less than the installing company wanted for just the service call. I highly recommend, if you need heating and air conditioning service that you reach out to Dennis Moon’s Heating and Air Conditioning Service. You won’t be disappointed!