QUALITY AIR
  OF THE CAROLINAS
How It All Started


Quality Air of the Carolinas is dedicated to bringing best-in-industry technicians and professionalism to the HVAC industry. After twenty years of building Centers of Excellence in the medical device implant market here in Charlotte, Denny and Dee Castillo set out to infuse the same success strategies into the HVAC business. We strongly believe that the air you breathe matters. Out of our passion for health, Quality Air of the Carolinas was born. Our hope is to fuse our healthcare experience and passion for healthy lifestyles with HVAC expertise to create new standards in the industry.



What our customers are saying

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The Mission

Quality Air of the Carolinas is dedicated to improving customers’ and employees’ quality of life by providing industry-leading professional services and customer experiences, while striving to give back to the community. With over 40 years of combined healthcare experience, we are passionate about the well-being of others and saw an unmet need in ventilation services. As our company’s name implies, indoor air quality is our passion and thus a key component of our business, not an add-on service or up-sell used to hit a bottom-line. But rest assured, we are here to manage ALL your air needs, because ultimately, if your heating and cooling systems are not operating properly and efficiently, the health of your family can be compromised. Our goal is to keep your HVAC systems healthy, which ultimately keep your home and family well.

My heat pump was over 30 years old. Decided to go ahead and replace it before it stops working. When I purchased this house 5 years ago, the seller replaced the furnace as a part of purchasing the property. Come to find out they replaced it with another brand that wasn’t completely compatible with the existing heat pump. Two local companies gave me quotes to replace the entire system because they didn’t sell that brand. Well Quality Air of the Carolinas doesn’t sell that brand either but went out their way to find me one. They were able to find me the exact brand that is compatible with my now 5 year old furnace. Saved me a lot of $. Thank you to Denny and his crew for hooking us up! We are loving our new Goodman made in the USA!!! The air purifier they installed is really helping out with my kids allergies too. Highly recommend you give them a call.

Brian Duppstadt

The BEST Heating company I have ever done business with! Quick to arrive and diagnose the problem. Tech Went to pick up part in another city and came back and repaired the same day!! This was during the days we were having 20 degree weather and Dee Costello offered to bring me heaters to keep me warm until my heat was working again!!!!!! And Their rates are VERY fair!!! I will NEVER use any other company for my heat and AC needs!!! And I am lucky enough to live in the Cedarfield Neighborhood where the owners, Dee & Denny live!!! EXCELLENT work Quality Air of the Carolinas!!!!

Dolores  Jordan

Michael Panik

We had a great experience working with Dee and Denny of Quality Air! Through a referral from a friend, I got a call within an hour to setup the appointment to provide an estimate, which ended up being the next day. Both of our A/C systems went out just as it started to get hot and muggy, and within days, we had the new units installed, as promised. Everyone we worked with were extremely professional and very kind, and I would highly recommend Quality Air to anyone looking for help with their A/C.

Zachary Bonczek

We had our heat go out during the coldest week in years. Denny and his team were vigilant in troubleshooting our problem and even left us a couple of his personal space heaters as a backup! His genuine concern for my family was simply awesome. Fast, efficient and methodical. Highly recommend!! Thanks, Denny and Quality Air of The Carolinas!