Lean On Your Local Experts Your Comfort Is Our Business.

Serving Durham, NC & Surrounding Areas Since 1973

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Durham HVAC Services

Trusted by Our Neighbors Throughout Durham County Since 1972

Durham residents can trust CWJ Heating & Air Conditioning for all their heating, air conditioning, and indoor air quality needs, from new installations to emergency repairs and ongoing maintenance. We’re a local, family-owned HVAC company that has served Durham homeowners since 1972, and our in-house technicians handle the full range of residential HVAC work with no subcontractors.

Durham’s climate asks a lot of home comfort systems. Humid summers push air conditioners hard for months, and winters that dip below freezing mean your heating equipment needs to be ready when temperatures drop. Having one HVAC contractor you can count on for both seasons, someone who knows your system and your neighborhood, is worth more than starting the search over every time something goes wrong.

If you need straightforward comfort solutions, CWJ Heating & Air Conditioning is here for you. Call us at (919) 296-4999 or reach out online to request a free estimate in English or Spanish!

Why Choose CWJ Heating & Air Conditioning?

50+ Years of Proven Experience

Serving the Durham area since 1974, CWJ brings decades of hands-on knowledge and a track record customers can count on.
Honest, No-Pressure Service

You’ll never get a sales pitch—just straightforward recommendations focused on what’s best for your home.
Family Owned & Operated Since 1974
Locally owned and operated since 1974, this HVAC company has never sold out—and doesn’t plan to.
Trained Pros Who Do It Right

Ongoing training and a commitment to quality. Every job is done carefully, professionally, and built to last.

An HVAC Company Durham Homeowners Can Trust

Most HVAC companies pay their technicians on commission, which creates quiet pressure to recommend repairs or replacements the home may not actually need. Our technicians are paid hourly. Their assessment of your system reflects what’s actually going on, not what earns them a bigger check. That’s a structural difference, and it’s one of the clearest reasons homeowners keep calling us back.

Every senior technician on our team is NATE-certified, the independent, nationally recognized credential that requires passing standardized exams on HVAC installation and service. More than that, every one of them has been with us for at least five years. When we show up, we’re not sending someone who just finished a training course. We’re sending someone who has worked in Durham homes, knows the equipment common to this area, and can diagnose problems accurately.

We offer competitive rates and flexible payment options, and we’re available for same-day service when you need it. We also have Spanish-speaking team members on staff. As a family-owned company rooted in this community since 1972, we’re not here to close a transaction. We’re here to earn a relationship that lasts.

Don’t settle for subpar HVAC services. Call CWJ Heating & Air Conditioning at (919) 296-4999 to request same-day service from our licensed local team!

What a Full-Service HVAC Contractor Covers

A lot of HVAC companies handle one or two things well and refer out the rest. We cover the full scope of residential HVAC work under one roof: fewer handoffs, more consistent service, and one phone number when something goes wrong.

Heating & Cooling Installation

Installing a new system involves more than swapping out equipment. Matching system capacity to your home’s square footage, duct layout, and local climate affects whether the unit runs efficiently over time. An oversized system short-cycles and wears out components faster; an undersized one runs constantly and never fully conditions the space. We size and install heating and cooling systems correctly, including heat pumps. They’re a practical fit for Durham’s climate because a single system handles both heating and cooling and can perform well through the region’s moderate winters.

Repair & Emergency Service

System failures don’t wait for convenient timing. We offer emergency HVAC repair and are available around the clock. Because our technicians are local and know the Durham area, we can respond without the delays that can come with dispatch-based national service networks. Whether it’s a heating system that stops working on a cold night or an air conditioner that quits in July, we’re equipped to get there and address the issue.

Preventive Maintenance

Most equipment failures trace back to deferred maintenance. Our planned service contracts include two service trips per year for up to two systems per home, giving us the chance to catch refrigerant issues, electrical faults, and dirty components before they become breakdowns. Consistent maintenance also helps keep systems running at rated efficiency, which matters for energy costs every month of the year.

Indoor Air Quality & Additional Services

A new HVAC system improves temperature control, but air quality, humidity, and duct condition are separate concerns that affect how a home feels and how healthy the air is. We install and service humidifiers and air filtration systems, and we handle duct cleaning. We also cover thermostat installation, gas piping, ductless mini-split systems, and gas-to-electric furnace conversions for homeowners making the switch. Whatever the need, we handle it without sending you to a second contractor.

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Customer Resources
We're here to deliver solutions and help you understand the problem. Check out our blogs for helpful information about your systems.

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Maintenance Plans
Having a maintenance plan will ensure your home is at the right temperature year-round. Learn more about what you can expect from ours!

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Current Promotions
We have a lot of promotions going on to help you save. Check out what the specials we're currently running and take advantage of them now!

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Happy Customers in Your Neighborhood

Hear From Our Happy Customers

“5-star company!”
“Excellent people very technical group of people.”

- Kurt Y.
“Outstanding job you guys.”
“He went above and beyond by also spraying and cleaning the enternal and external system.”

- Kenyon L.
“The technician was courteous and prompt. I would highly recommend this company.”
“CWJ came out and did the repair for 1/3 of the cost saving me over $1000.”

- Greg S.
“The technician came within 90 minutes of my call.”
“CWJ responded very quickly to my request to check behavior of my heating system.”

- Nils B.