Residential HVAC
AC Repair & Installation in Greenville, SC
When the South Carolina heat kicks in, you need cooling you can count on — we repair, replace, and install central air systems with fast, honest diagnostics and right-sized equipment for lasting comfort.
Stronghold Mechanical provides air conditioning repair and installation for homes throughout Greenville, SC and the surrounding Upstate. Whether your current system stopped cooling overnight or you're ready to upgrade an aging unit, our certified technicians deliver honest diagnostics, right-sized equipment, and upfront pricing before any work begins.
Don't Ignore These
Signs Your AC Needs Repair
If any of these sound familiar, it's a good time to have a licensed technician take a look.
- The system runs but the air coming from your vents isn't cool
- Ice is building up on the outdoor unit or the refrigerant lines
- Warm air blows even when the thermostat is set to cool
- The unit short-cycles — turning on and off every few minutes
- Unusual grinding, rattling, or squealing noises from the condenser
- Higher-than-normal energy bills during cooling season
- The system won't turn on at all, or trips the breaker repeatedly
What We Do
Our AC Repair & Installation Services
From a quick refrigerant top-off to a full system replacement, we handle the full range of residential cooling work.
Central AC Repair
Compressor failures, refrigerant leaks, frozen coils, bad capacitors, and fan motor issues — diagnosed and repaired with quality parts and honest pricing.
New AC Installation
We size and install high-efficiency central air systems matched to your home's square footage, ductwork, and insulation — not a one-size-fits-all guess.
System Sizing & Load Matching
Too big and it short-cycles; too small and it never catches up. We calculate the real load so your new system runs efficiently and lasts longer.
Refrigerant & Coil Service
Low refrigerant, dirty evaporator coils, and leaking coils all hurt cooling. We find the leak, fix it, and recharge to manufacturer specs.
Repair or Replace?
If your air conditioner is under 10 years old and the repair is minor — a capacitor, a contactor, a refrigerant top-off — a repair usually makes the most sense. Once a system passes the 10–15 year mark and you're facing a major component failure like a compressor, replacement is often the better long-term value. We'll show you the numbers for both so you can decide with confidence — no pressure either way.
Our Process
What to Expect
No surprises and no pressure — just a clear path from scheduling to a comfortable home.
Schedule
Book online or call us to set up a convenient time. No trip fee on scheduled appointments.
On-site evaluation
A licensed technician inspects your system and the space it serves, start to finish.
Review findings
We walk you through what we found — with photos — in plain language, no jargon.
Upfront price
You get a clear, complete price before any work begins. No hidden add-ons.
Service & follow-up
We do the work cleanly and follow up to make sure your home is comfortable.
Why Stronghold
Why Homeowners Choose Stronghold Mechanical
Upfront pricing
You see the full price before we start. No hidden add-ons, no surprises on the invoice.
Free estimates
Free estimates and system analysis — and no trip fee on scheduled appointments.
Licensed technicians
SC-licensed technicians with ongoing and manufacturer-specific training.
Locally owned
A locally owned company serving Upstate South Carolina — your neighbors, not a call center.
Areas we serve: Greenville, Taylors, Greer, Simpsonville, Mauldin, and surrounding Upstate SC.
Questions
Frequently Asked Questions
- How do I know if I need AC repair or a new system?
- If your system is under 10 years old and the repair is minor, a fix usually makes sense. Past 10–15 years with a major component failure, replacement is often the better value. We'll show you the cost of both before you decide.
- How long does an AC installation take?
- A straightforward central air replacement is typically done in a day. A new system with new ductwork or a system conversion can take longer — we'll give you a clear timeline before we start.
- Do you offer emergency AC repair in Greenville?
- Yes. We offer 24/7 emergency repair service for urgent cooling failures. After-hours and emergency calls may include a modest service fee, always explained in advance.
- What does an AC service call cost?
- We offer free estimates and system analysis, and there's no trip fee on scheduled appointments. You get the full price before any work begins — no hidden add-ons.
- What size AC do I need for my home?
- Sizing depends on square footage, ceiling height, insulation, window exposure, and ductwork — not just square footage alone. We calculate the actual load so your new system runs efficiently and lasts.
Keep Exploring
More From Stronghold Mechanical
All Residential Services
Heating, cooling, indoor air quality, and smart thermostats for Upstate homes.
Learn moreMaintenance Plans
Bi-annual tune-ups that keep your system efficient and catch problems early.
Learn moreHeat Pumps in Greenville
Heating and cooling in one efficient system — a great fit for the Upstate climate.
Learn moreContact Us
Request service or ask a question — we'll get back to you fast.
Learn moreNeed AC Service in Greenville?
Call now or book online — we'll get a certified technician out to you fast.