AC Repair & Install
From a capacitor swap to a full system replacement. We size it right, quote it flat, and haul the old unit away.
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4.9 ★★★★★ from 600+ local reviews
AC out on a Sunday? Furnace quit at midnight? Redline answers around the clock, shows up when we say we will, and quotes the repair before we start it. No surprises on the invoice — ever.
Cooling to comfort. Cool air where you want it, warm air where you need it — most repairs done the same visit.
Repairs, replacements, and maintenance for homes across York County and south Charlotte — with the price agreed before the work begins.
From a capacitor swap to a full system replacement. We size it right, quote it flat, and haul the old unit away.
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Gas furnaces, heat pumps, and ductless mini-splits — repaired, tuned, and safety-checked before the cold snap hits.
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Two tune-ups a year, priority scheduling, and 15% off repairs. The cheapest way to never meet us at 2 a.m.
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Filtration, humidity control, and duct cleaning for Carolina pollen season — breathe easier at home.
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Installed and set up for you, schedules and app included. Most homes cut cooling costs 10–15%.
Learn More →No heat, no cool, water where it shouldn't be — call any hour. A dispatcher answers, not a machine.
Learn More →Reach a human 24/7 — or book in under a minute with the after-hours assistant right on this page.
Your tech diagnoses the problem and quotes the exact price before any work starts. Approve it or don't — no pressure.
Most repairs finish the same visit, with the part already on the truck — and we haul the old one away.
Every repair is backed by our 2-year parts-and-labor warranty. If it fails, we come back and make it right.
When something goes wrong with your heating or cooling, you shouldn't have to wonder who's showing up at your front door. Every Redline technician is background-checked, trained, and committed to treating your home with the same care we'd expect in our own.
Whether it's a repair, a tune-up, or a full replacement, we don't believe in one-size-fits-all. Every recommendation is tailored to your home, your comfort, and your budget — and every price is quoted flat, in writing, before the work begins.
That's how a family-owned shop in Fort Mill has earned the trust of homeowners across York County and south Charlotte since 2009.
Fort Mill keeps our number on the fridge. Here's why.
"AC died Friday night with a house full of guests coming Saturday. Tech was here by 9 a.m., had the part on the truck, done by lunch."
"Quoted me $340 at the door and charged me $340. First contractor in twenty years who's done that. They have a customer for life."
"Booked through their website chat at 11 p.m. and woke up to a confirmation text. Furnace running by 10 the next morning."
For us, comfort isn't just a temperature. It's how we answer the phone, how we quote the job, and how we stand behind the work — every visit, every home.
You approve the exact price at your door before we turn a single bolt. If the repair costs more than we quoted, that's our problem — not yours.
We show up when we say we will — and if we're ever running behind, you hear it from us first, not from an empty driveway.
Every repair carries our 2-year parts-and-labor warranty, on the invoice, in plain language. No fine-print games, ever.
Full diagnostic, waived when you approve the repair. We'll show you exactly what's wrong and what it costs to fix.
21-point inspection, coil cleaning, refrigerant check, and a written health report for your system.
Both tune-ups included, front-of-line scheduling, no overtime fees, and 15% off every repair.
A broken system shouldn't break your budget. Flat rates, quoted in writing at your door — if the repair costs more than we quoted, that's our problem, not yours.
No hourly meters running. No "we'll see when we get in there." Just a number you can hold us to.
Book a Service CallThe cheapest way to never meet us at 2 a.m. — two tune-ups a year and front-of-line treatment, for $19 a month.
Join the Comfort Plan →Keep your system running safely and reliably all year.
When your comfort is on the line, members come first.
Your membership pays for itself in repair discounts.
For over 15 years, Redline has been the go-to for Fort Mill and York County residents who value their home and health. As a family-owned local business, we're dedicated to bettering the lives of our neighbors.
Real people answer our phones around the clock — a dispatcher, not a machine — and the tech who shows up treats your home like their own.
More About UsBased in Fort Mill, serving York County and the south Charlotte suburbs — usually within the hour for emergencies.
