Seasoned pros for every season in the Triad.
Heating and air conditioning repair, replacement and maintenance for homes and businesses across Greensboro, High Point and Winston-Salem — done right, explained honestly, and backed by our 100% satisfaction promise.
Complete comfort, from one trusted team
Whether you need a routine tune-up or an emergency repair on a system that’s stopped working, our technicians handle all of your heating, cooling and ventilation needs.
ResidentialHeating & A/C Repair
Fast, accurate diagnosis on heat pumps, furnaces and central air — with a clear explanation and an upfront price before we start.
Repair services
ResidentialSystem Replacement
New systems sized from real load calculations — not guesswork — so you get the right equipment, lower bills and even comfort in every room.
Replacement
CommercialCommercial HVAC
Rooftop units, split systems and crane-set replacements for offices, churches, warehouses and property management portfolios.
Commercial
BothMaintenance Program
Spring and fall tune-ups that extend equipment life, protect efficiency and catch small problems before they become breakdowns.
See the program
ResidentialDuctwork & Air Quality
Duct repair and design, high-efficiency filtration, UV lights, humidifiers and ventilation for cleaner, healthier air — a must in Triad pollen season.
Air quality
FreeFree Estimates & Financing
Detailed written estimates on every replacement, plus flexible monthly payment options through Wisetack.
Financing options
experience
Quality workmanship and fair pricing. You don’t have to pick one.
Founded by Charles Miller in October 2008, Miller Services has grown into one of the Triad’s most respected heating and air companies — trusted by individual homeowners and large property management companies alike. Every job is backed by a simple policy: 100% customer satisfaction, no matter what.
- Same-day service when you need it most
- Honest diagnosis — repair vs. replace, with no pressure
- Systems from Trane, Carrier, Mitsubishi & Honeywell
- 1-year parts & labor warranty on new installations
Three things we never compromise on
Reliability
We’re here when you need us — on time, prepared, and on call for emergencies when the weather turns.
Workmanship
We pay attention to the details: clean line sets, sealed ducts, tested charge and a tidy job site.
Satisfaction
We exceed expectations — and if something isn’t right, we make it right. That’s the Miller guarantee.
Real work. Real Triad job sites.
From backyard heat pumps to crane-set rooftop units — a look at what our crews have been up to lately.
Neighbors who trust Miller
“Came same day I called, very helpful and knowledgeable, took the time to explain the issue, no pressure to try to get me to pay for extra services.”
“Following our experience with Miller Services, we have decided to make them our go-to company for anything HVAC related. Excellent service!”
4.9 / 5
Average rating from 60+ verified reviews on HomeAdvisor & Angi, where 98% of customers recommend Miller. What they mention most: quick response.
A new system now. Easy payments over time.
We’ve partnered with Wisetack so you can spread the cost of a repair or replacement into simple monthly payments. The application takes about a minute — and checking your options won’t impact your credit score.
*All financing is subject to credit approval. Terms may vary. Offers range from 0–35.9% APR based on creditworthiness. See wisetack.com/faqs.
Proudly serving the Piedmont Triad
Based in High Point, our trucks cover Guilford, Forsyth, Davidson and Randolph counties — residential and commercial customers alike.
Questions we hear every week
Should I repair or replace my system?
It depends on age, efficiency and repair history. As a rule of thumb, if your system is 12–15+ years old and the repair costs more than a third of a new system, replacement usually pays off. We’ll run the numbers with you honestly — no pressure either way.
How often should my HVAC system be serviced?
For heat pumps and systems that both heat and cool, we recommend maintenance twice a year — spring and fall. Cooling-only systems should be serviced before summer, and heating-only systems before winter.
When is the best time to schedule a tune-up in the Triad?
March or early April, before cooling season and after the worst of the oak and pine pollen. Fall tune-ups in September–October get your heat ready before the first cold snap.
Do you offer free estimates?
Yes. Every system replacement comes with a free, detailed written estimate covering equipment options, warranties and financing.
Do you work on commercial buildings?
Absolutely. We service and replace rooftop units and split systems for offices, churches, warehouses and property management companies, including crane-set installations and tailored maintenance agreements.
Can I finance a new heating or cooling system?
Yes — through Wisetack you can finance projects up to $25,000 with terms from 3 to 60 months. Prequalifying takes about a minute and won’t affect your credit score.