Stay Comfortable All Year Long

Stay Comfortable All Year Long

Choose the HVAC company you can trust in Clayton & Smithfield, NC

When your HVAC system malfunctions or fails, it can leave you shivering or sweating in your home. You need a knowledgeable technician to come out quickly and repair the problem correctly. That's exactly what you get when you choose O'Neils Heating & Air Conditioning, LLC. We provide HVAC service you can depend on in Clayton & Smithfield, NC.

Call our HVAC company right away! You'll be warm or cool again in no time.

HVAC Repairs

Let our experienced technicians get your HVAC system running again.

HVAC Repairs

HVAC Maintenance

Stay on top of your system's health with routine maintenance.

HVAC Maintenance

Reviews

Check out what our satisfied customers have to say.

Reviews
Your HVAC system is in good hands

Your HVAC system is in good hands

No one should be without a working HVAC system in the middle of summer or winter. At O'Neils Heating & Air Conditioning, we're dedicated to providing fast, effective HVAC service for every customer. That's why we offer 24/7 service. For more than 20 years, we've been keeping the Clayton & Smithfield, NC community comfortable. When you call on us for HVAC service, our team will be right there to help.

Contact our HVAC company serving Clayton & Smithfield, NC at any time. Make sure to ask for your free estimate.

Clean air at the right temperature. That's our promise.

Clean air at the right temperature. That's our promise.

When you choose O'Neils Heating & Air Conditioning, you're hiring a company that truly cares about your comfort. We offer HVAC service to homes and small businesses in the Clayton & Smithfield, NC area. You'll appreciate our honesty, integrity and reliability. Call on us when you need:



Our crew can handle everything from thermostat replacement and coil changes to inspections and full installations. We work with all major brands and hold a Sure Comfort certification. You can even hire us to test your air for mold and other contaminants.

Schedule a service appointment today. Don't forget to ask about our discounts for seniors, members of the military, teachers and first responders.