Steven V.
9/22/2025
We discovered a leak coming from our roof and thought it might be from the condensation pipe in the attic. This was all taking place on a Sunday morning. We called Mark and as luck would have it,...
Mark Of Excellence Heating & Air Conditioning
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Casa Grande, AZ 85122
We strive diligently to exceed expectations. Here, we understand the setbacks that arise when your HVAC system is malfunctioning. When you hire our HVAC maintenance team to handle your air conditioning unit installation or AC repair repair, expect to receive superior service. We also perform other tasks such as heating system installation and heating system repair. Our qualified HVAC technicians can perform any size job, whether big or small. From rooftop air conditioners to furnaces, we are well-versed in a variety of systems. Your need for quality indoor air, ventilation and comfort can be found in us.
Reviews
4.512 reviewsBill L.
8/11/2025
It's been about 3.5 years since Mark & Bret ( Mark of Excellence) did a complete Furnace and AC installation. The initial install was priced extremely competitive, they were very knowledgeable,...
Ken D.
7/29/2025
Highly recommend for AC installation and repair Mark of Excellence in Casa Grande AZ. Local father and son business. A Lennox authorized dealer that offers senior and military discount. Mark the...
Camp C.
4/25/2024
Very easy to schedule the work and great communication. We have a new home that requires a Lennox Certified Contractor to maintain / service th system in order to keep the 12 year warranty in...
Nick D.
4/25/2024
I picked Mark of Excellence Heating and Air Conditioning LLC in early to mid March based on reviews on a local town Facebook group. First red flag is communication. They are awful at it. I had to...
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