"I own a laundry and needed two new swamp coolers. I called DNA and Andrew came out and from our first meeting was very professional. He was knowledgeable and able to answer all my questions which put me at ease. These guys did a bang up job. They were clean and made short work of removing my old units and installing of the new ones. I would highly recommend DNA for future work."

"Assemble a Sauna. A very complicated job. He did a wonderful job. Very thorough and complete."

"We had an air purifier installed on our HVAC system. Victor was professional, punctual and reasonably priced."

"Shai called to me almost immediately after I submitted a service request in the morning through Angi and he was available to conduct a service call the same day, in the afternoon. I had an issue with my downstairs' Google Nest thermostat's power not working and consequently my AC being disabled. Shai troubleshooted, tested, and was able to get the transformer responsible for powering the Nest and the AC, back up and running in no time at all. I found Shai to be professional, communicative and friendly. Due to the positive experience, I decided to use Highland Air for Preventative Maintenance Service of my home's AC/Heating."

"Keith was prompt, professional and perfect at a very fair price. He may be my go-to guy for future repairs. Thank you!"

"Velasquez Electric worker was on time and very easy to work with. He installed 3 GFI outlets. The quality of the product was very professional. I would hire them again."

"Done right responded immediately. Call these guys! I am a real hard nose and they did everything right."

"Service was great and pricing very competitive. Nick Knuth was very knowledgeable when he came to do an assessment of the work to be done, and answered all my questions I'm a very clear way. The techs worked pretty quickly and efficiently when installing the new unit. Deisy and Emma from the office always made sure that things were taken care of and went above and beyond with follow-ups and updates. I would definitely recommend them to anyone who needs this service."

"Simply put, Robs amazing. Years and years of HVAC experience ooze from this honest and caring guy. Did my install and then some for a more than fair price instead of what the other Angi pros wanted. He’s now my go to guy for any and all AC & Heating issues. Oh and he showed up exactly at the time he told me he would. Amazing"

"Great service and work. Everything was explained and installed perfectly., no surprises. Customer service and follow-through were excellent."