RELIABLE HVAC Service in Raleigh.
Specializing in fixing heating and air conditioning systems
and delaying replacements.
Trust us to be your reliable HVAC company – for life.
Heating
Air Conditioning
Our AC repair and installation experts keep you comfortable on 90-degree days. For a quote on air conditioning service in the Raleigh area give us a call.
Air Quality & Ventilation
American Lung Association reported that poor indoor air quality is among the top five environmental risks to the American public. Give us a call if you would like one of our trained technicians to test the air quality in your home.
Maintenance
Schedule a bi-annual Heating and A/C tune-up to save money on your energy bill and extend the life of your system.
We specialize in
Raleigh area HVAC Systems & Customer Service
You might be shocked to hear that prices have risen considerably in the past few years for a new HVAC system. Replacing an existing HVAC system typically costs $6,500 and up. Most families simply can’t afford a new system when their aging system breaks down without warning. That’s why Delta T NC HVAC Services is a customer-first & repair-first company.
Let us repair and extend the life of your existing system and delay a costly replacement for as long as possible. When its time to replace, we will be there every step of the way - from which system is right for you to installation and ongoing maintenance.
Our Raleigh area HVAC customers love us
Latest Reviews
“Keith and his team are great, I got multiple quotes to replace my HVAC units and his prices were fair. He was responsive, professional, and quick to respond to questions.
His team has successfully installed two units and I am in the process of recommending him to all of my neighbors!”
Steven Walten, Raleigh, NC
Delta T was recommended by a friend in my neighborhood when I suddenly experienced a leak coming from below the HVAC. I called Keith and in under 24 hours he was here, figured our the source of the leak and helped me repair it.
He went above and beyond checking on everything, providing maintenance services and helping me figure out next steps. His prices were very reasonable and now I have regular maintenance services set up with them to prevent future issues. I am so grateful to have a local, reliable and knowledgeable company nearby! Thanks for all your help Keith and Delta T – see you in the spring!
Erica Gahm~ Raleigh, NC
“Our heat pump went out in January. Keith went out of his way to try to salvage it, but when it proved to be unsalvageable, he got us right on the schedule and had a new gas furnace installed within a week. He communicated very clearly about the state of things and answered all of our questions. He and his team were on time and did great work. I highly recommend Delta T Services for any HVAC repair or installation.”
Keith Anderson ~Wake Forest, NC
“Amazing turnaround time, fantastic customer service, fair prices and knowledgeable. I found my local HVAC company for speed dial.
Heat went down and other companies told me I’d have to wait till next week as it was busy. Keith showed up at 7pm on a Friday on a same-day request. After fixing my system, he stayed to make sure everything worked properly so I would have no issues. Would recommend him to anyone.”
Clayton Johnson ~Apex, NC
“Amazing turnaround time, fantastic customer service, fair prices and knowledgeable. I found my local HVAC company for speed dial.
Heat went down and other companies told me I’d have to wait till next week as it was busy. Keith showed up at 7pm on a Friday on a same-day request. After fixing my system, he stayed to make sure everything worked properly so I would have no issues. Would recommend him to anyone.”
Clayton Johnson ~ Durham NC
Why us?
We’re an honest, fast, local, friendly, and fair Heating and Air Conditioning company that has the expertise to handle residential HVAC to light commercial jobs. Delta T NC HVAC Services specializes in:
COMFORT
We can improve the efficiency and health of your home by inspecting and improving your HVAC system. If you struggle with allergies, sickness or your house still seems hazy and dirty no matter how much cleaning you do, we can make it better. It’s not only bad for your lungs, but it’s a sure sign your HVAC system is having serious problems. We can diagnose these problems and address them.
HVAC EXPERTS
PEACE OF MIND
Fast, friendly service from a local North Carolinian. Keith, the owner is from Eastern North Carolina. Keith doesn’t outsource the calls to China or even Tennessee. Only the people he trains and trusts to take care of you will be talking and working with you.
Also, you will have peace of mind knowing that every repair comes with a warranty.
Emergency HVAC service
We guarantee our work
Delta T Services Offers a 1-Year Warranty on All Repairs
For new installations, you receive:
-Manufacturer Warranty on Parts for 10 Years
-Delta T Services Warranty on Labor for 2 Years
-Optional 10 year labor warranty
A maintenance contract with Delta T is required to satisfy warranty requirements for new systems!

Let’s Get Some HVAC Answers
- Need emergency air conditioning or heating service?
- Are you noticing signs that your heating or air conditioning isn’t working as well as it should?
- Do you want to find out how to improve the air quality in your home?