Family-Owned · Upstate South Carolina
Stay Comfortable With Expert HVAC Services
We install, repair, and maintain systems for homes and businesses across Upstate SC.
- Licensed & Insured
- Certified Technicians
- 24/7 Emergency Service
- Family Owned
Call Now for Emergency Service
Available 24/7 for urgent heating and AC repairs.
Schedule Your Service
Routine maintenance at a time that works for you.
About Stronghold
We Exist to Make HVAC Easy.
With years of experience, our certified technicians deliver top-notch heating and air conditioning repair, installation, and maintenance services — done right, done honestly, and done on time.
What We Do
HVAC Services for Every Need
From a single residential repair to full commercial installations, we cover the full spectrum of heating and cooling.
Residential Services
Home Comfort & Air Quality
- A/C Repair & Installation
- Furnace & Heating
- Indoor Air Quality
- Smart Thermostats
Commercial Services
Industrial, Office & Retail Solutions
- Unit Installation (RTUs)
- Preventative Maintenance
- Chillers & Boilers
- Ventilation & Ductwork
Maintenance Plans
Keep Your System Running
- Seasonal Tune-Ups
- Safety Inspections
- Filter Replacement
- Service Agreements
Schedule Today
Pick a time that works for you — or call us now for fast, expert service.
Our Recent Work
Projects Across Upstate SC
A look at recent residential and commercial HVAC work our team has completed.
Commercial HVAC
Expert Commercial HVAC Solutions.
From small offices to large industrial facilities, we understand that downtime costs money. That's why we offer rapid response, preventative maintenance programs, and 24/7 emergency service to keep your business running.
Certified Technicians
Trained on commercial equipment of every scale.
Cost-Effective Solutions
Preventative programs that protect your budget.
Quick Response
Rapid dispatch to minimize costly downtime.
Our Approach
Innovative and Results-Driven
We take a tailored approach to every job, staying current on the latest HVAC technology to deliver efficient, reliable results for homes and businesses alike.
- Right-sized solutions for your space and budget
- Current with the latest energy-efficient technology
- Honest recommendations, not upsells
Customer Reviews
What Our Customers Say
Real feedback from homeowners and businesses across Upstate SC.
“New to the Upstate and had a terrific experience. They were very informative about the heating system and made the house comfortable again. Shout-out to Casey for treating us like people, not numbers. Very professional.”
“Brian was knowledgeable and attentive, Melissa in dispatch was friendly, and Casey did an over-the-top job explaining everything. Affordable, and the heat was back up and running. Recommended for residential and commercial.”
“Family owned and operated, transparent and honest, with great prices on maintenance plans. Highly recommended for any HVAC need.”
FAQ
Frequently Asked Questions
Looking to Maximize Your Comfort?
Our HVAC experts deliver tailored solutions for efficiency, reliability, and year-round comfort.