Warren-Hay Mechanical – Proudly Serving Hillsborough, Durham, Chapel Hill and Surrounding Areas

Warren-Hay Mechanical is equipped to handle any HVAC job: from AC repair Hillsborough residents need to preventive tuneups and building-wide replacements. With dedicated residential and commercial service techs and installers, we have the tools and training to complete any job while meeting or exceeding strict industry standards.


The Warren-Hay Difference

Thanks to our qualifications and experience, we have a long track record of successfully completing installations, repairs, and tuneups for homes and businesses in the area. In addition to our comprehensive array of HVAC services, we offer home performance testing and indoor air quality solutions that are customized to meet your needs.
We promise you:


Highly-trained personnel


Service techs who can repair, maintain, and install any brand or model of HVAC equipment.


A real team that is ready to answer your calls. We will respond quickly to your heating and cooling needs.

We’re happy to show you why we’ve become the go-to experts for heating and air conditioning in our community. We’re a Trane Comfort Specialist, and have the expertise to handle any HVAC problem.

Our Industry Qualifications and Business Philosophy

In addition to offering quality HVAC services and top-rated Trane products, we strive to accommodate your schedule. We offer same-day appointments and 24-hour heating and AC repair Hillsborough residents can depend on during emergencies. The following are more ways we set ourselves apart from the competition:

Proven Expertise:

Warren-Hay has a long history of serving local homeowners and businesses. Since our founding in 1993, we’ve advanced our credentials and grown our client base by offering quality services, fair prices, and all-around value.

Factory-authorized Contractors:

As a factory-authorized Trane dealer, we install a wide selection of efficient equipment for air conditioning and heating Durham businesses and homes.

Certified Technicians:

We employ service techs and installers who have earned certifications from North American Technician Excellence. NATE’s stringent exams measure technicians’ knowledge of general HVAC technology and multiple specialty areas.

Advanced Credentials:

At Warren-Hay, we believe in going above and beyond to assist our customers. To prove this commitment, we’ve earned certifications from esteemed organizations like the International Ground Source Heat Pump Association (IGSHPA) and the Building Performance Institute. Only a few HVAC contractors have IGSHPA geo certification. We are happy to promote efficient air conditioning and heating in our area.

Our Guarantee:

Whether you hire us to perform a repair or to install equipment for air conditioning and heating, Durham, Chapel Hill, and Hillsborough residents receive our 100 percent satisfaction guarantee. We want to make sure that you’re completely happy with our work.

As a family-owned and -operated business, we emphasize the importance of integrity, honesty and teamwork. We believe in respecting our customers and their homes and treating each client like family. Our team members will be happy to answer your questions, and we never hesitate to go the distance to meet your needs.

Our Credentials

Certified HVAC Contractor
Trane Comfort Specialist NATE logo IGSHPA Energy Star logo logo

Heating and Air Conditioning Durham, NC, & Nearby Cities

We are happy to provide solutions for heating and air conditioning Durham, NC, residents need to get through the seasons. If you live in Raleigh, Hillsborough, Chapel Hill, or Carrboro, we also look forward to serving you. We wish your family years of unlimited comfort and reliable heating and cooling. If you need a repair, system replacement, safety inspection, or a second opinion, don’t hesitate to give us a call.

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