Air Conditioning Services
Central air conditioning and ductless mini-split service built around Union County summers.
An air conditioner in Union County runs for months at a stretch, and that kind of steady use is what eventually turns a small issue into an AC repair call. Byrum installs and services air conditioners and ductless mini-split systems for homes throughout Marshville, Monroe, and the greater Union County area, sizing every system to the space it’s actually cooling instead of defaulting to whatever unit is easiest to install.
Whether you’re comparing a central air conditioning unit against the flexibility of a ductless system, or your current unit is due for HVAC replacement after years of repairs, our technicians walk through the options in plain terms. Consistent HVAC maintenance is what keeps either setup running efficiently through the parts of the year Union County needs it most.

Inspect & Repair
Our technicians diagnose air conditioner problems quickly and handle the AC repair on the spot whenever the parts are on hand. We’re equipped to work on most AC issues without a second visit, which matters most in the middle of a heat wave.
Installations
We assess your home before recommending a unit, since an air conditioner that’s the wrong size for the space never runs efficiently no matter the brand. That attention to detail is what makes the difference between an installation that lasts and one that needs attention again in a year or two.
Maintenance
Routine AC maintenance keeps a system running efficiently and catches small issues before they become the kind of repair that ruins a weekend. It’s also one of the simplest ways to put off an eventual HVAC replacement by a few more years.

Count on us for premium cooling solutions.
And Dozens More
Qualified for All Major Makes and Models
Our team of expert technicians is trained to handle all makes and models of major brands with precision and care. From routine maintenance to complex repairs, we ensure top-notch service for all.
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Ensure optimal efficiency of all your systems
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Lower your utility costs with energy efficiency
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Extend your system’s lifespan through regular maintenance
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Keep you and your family comfortable and safe during all seasons
Our Certifications & Awards
FAQs
How can I extend the lifespan of my AC?
You can take several proactive steps to extend the lifespan of your AC. To maximize the efficiency, functionality, and longevity of your air conditioning system, follow these steps:
- Clean or replace filters every few months
- Keep the outdoor unit clear of debris and vegetation
- Keep vents unobstructed and seal any air leaks
- Set the thermostat at a reasonable temperature and avoid drastic fluctuations
- Consider investing in a programmable thermostat
- Schedule professional tune-ups annually
What are the signs that my air conditioner requires repairs?
Warm air from the vents, water pooling near the indoor unit, a system that’s short-cycling, or a noticeable jump in your energy bill without a change in usage are the clearest signs something needs attention. Unusual noises, like grinding or hissing, are also worth a call sooner rather than later.
How can I help my air conditioner run more efficiently?
Keeping the outdoor unit clear of plants and debris, changing the filter regularly, and sealing obvious air leaks around windows and doors all reduce how hard your system has to work. Scheduled AC maintenance handles the parts of efficiency you can’t manage yourself, like checking refrigerant levels and cleaning coils.
How do I know if I need AC repair or HVAC replacement?
Frequent repairs, a system older than 10 to 15 years, and rising energy bills without a change in usage are the main signs replacement makes more financial sense than continuing to repair an aging unit. During an inspection, a technician can put the cost comparison side by side for your home.
Do you install ductless mini-split systems as well as central air conditioners?
Yes. We install both central air conditioning systems and ductless mini-splits, and we can help you figure out which one fits your home better if you’re not sure.
What areas do you serve for air conditioning repair services?
Byrum provides air conditioning repair services throughout Marshville, Monroe, and the surrounding Union County area, along with nearby areas of Mecklenburg, Anson, Cabarrus, and Stanly counties in North Carolina, and Lancaster and Chesterfield counties in South Carolina.

Need an HVAC Maintenance Plan in Marshville?
- Improved system performance and energy efficiency.
- Prolonged lifespan of HVAC and IAQ equipment.
- Reduced potential for costly breakdowns and repairs.
- Enhanced indoor air quality for a healthier environment.
- Priority scheduling and prompt service when needed.
- Savings with preventive maintenance & discounted repairs.

HVAC & IAQ Financing Available in Marshville and Surrounding Areas
We understand that major home improvement repairs can come unexpectedly, and our financing partners assist our customers by offering competitive plans. Our convenient financing options give you budget flexibility to get the reliable, energy efficient comfort you’re looking for.
Learn MoreScott Shields
Great company with very professional sales and service staff. Would highly recommend Byrum to anyone. The new unit installation has cut my energy bills in half compared to what they were for the same period last year. My only regret is not having have done it sooner. Even the city inspector commented on the excellent quality of the work completed.
Judith Ross
It was very hot outside, our A/C went out. Another company left us for 4 weeks and still could not say when the new A/C would be installed. Byrum responded immediately, brought a portable A/C unit and installed it until they could get the new one. Within a week, it was installed. Every single person was kind, caring, professional. Everything was explained in detail, the work was excellent, prompt and neat. Could not have dreamed of a better company to take care of my needs. THANK YOU!
Al Parler
Always very professional and always able to fix whatever has gone wrong in a very quick time. Excellent professional service.
Serving the Heartland of the Carolinas Since 1996.
Byrum Heating & A/C, Inc. serves the community with unwavering dedication across a wide service area. With a strong foundation built on Christian values, quality workmanship, and honesty since 1996, they have become a trusted name in heating, cooling, and indoor air quality services. Their NATE-certified technicians cover residential and commercial HVAC needs and ensure top-notch repairs, installations, and maintenance. Byrum's commitment to customer satisfaction and integrity shines through in every interaction, making them the go-to choice for optimizing comfort and cost savings.



















