Full 25-point door and opener safety check with every visit - springs, cables, rollers, tracks, and your LiftMaster or Chamberlain opener included
You get a price before we start. It does not change when the truck arrives.
Before
After
Before
After
Before
AfterThe Mainspring Garage Door Co. Guarantee
When we say we stand behind our work in San Marcos, we mean it in writing. Every job we complete, whether it’s a spring replacement in Redwood or a new opener install near Texas State University, carries our 90-Day Done Right Promise. If something isn’t right, we come back and make it right. No paperwork to file, no argument, no charge. That’s been our way since Carl Dutton founded Mainspring in 1984, and it’s still how we answer the phone today.
We’re not interested in making you hunt us down when a cable slips or a bracket loosens. Our guarantee is simple: the flat price we state before any work begins is the price on the bill, and the work we do is covered for ninety days by a promise that’s printed on every invoice. We’ve been serving Hays County and the surrounding communities for over 42 years. You don’t stay in business that long in a town like San Marcos by treating guarantees like marketing fluff.
What’s Covered
- Workmanship on every repair and installation. Our technicians are trained journeymen who work under our K.E.Y.S. values code, and we back their labor with our written 90-Day Done Right Promise.
- Parts we supply and install. We carry springs, cables, rollers, hinges, and openers from all major brands on every truck, so the components we use are ones we trust enough to put our name behind.
- Cleanup and respect for your property. We leave your garage as clean as we found it, and our background-checked, uniformed technicians treat your home with the care it deserves.
- On-time arrival and clear communication. We tell you when we’ll be there, and we keep our word. If we’re running behind, you’ll hear from us, not wonder where we are.
- Honest, upfront pricing with no surprises. The price is quoted and agreed before any work starts. What we say is what you pay, period.
Our Satisfaction Promise
If you’re not satisfied with our work, we want to know. Here’s what happens: you call us at (737) 361-1958, and a live person answers, 24/7, including nights, weekends, and holidays. You tell us what isn’t right. We schedule a return visit at no charge, send the same technician back when possible so there’s no re-explaining, and we fix it. The 90-Day Done Right Promise is already in writing on your original invoice, so there’s no dispute process to navigate and no fine print to decipher.
We’ve had homeowners in San Marcos call us back because a door was running louder than expected after a roller swap, or because a weather seal wasn’t sitting flush after an install near the Blanco River. These aren’t failures to us. They’re chances to prove we mean what we say. Carl Dutton put this promise in place because he got tired of watching other trades treat callbacks like an argument to be won. At Mainspring, a callback is just part of doing the job right.
The promise covers our labor and the parts we installed. Manufacturer defects on factory-original components are handled through the manufacturer’s process, but we’ll manage that for you too. We know the warranty terms for LiftMaster, Chamberlain, Genie, Clopay, Amarr, Wayne Dalton, Craftsman, and Raynor because we work with them every day. You won’t be stuck on hold with a national call center figuring out who’s responsible. We’ll sort it out and tell you straight.
Licensed & Insured Backing
Our written guarantee means more because there’s real substance behind it. Mainspring Garage Door Co. is licensed and insured, which means if the unexpected happens, you’re protected. Not every operator in Hays County can say that. Licensing proves we’ve met the state’s requirements for competency and accountability. Insurance means that on the rare occasion something goes wrong beyond a simple callback, there’s coverage in place.
We’ve seen what happens when homeowners hire unlicensed help for garage door work. A spring under tension is dangerous equipment. A 150-pound door hanging from a failed cable is a genuine hazard. Our licensing isn’t just paperwork. It’s proof that we understand the mechanical risks and the legal obligations that come with working on your home. Our insurance isn’t a detail in fine print. It’s the backing that lets us offer our 90-Day Done Right Promise with confidence.
Carl Dutton has maintained these credentials since 1984 because he knows that trust in San Marcos is built slowly and lost fast. When a technician in a Mainspring uniform shows up at your door in Blanco Vista or along the San Marcos River, you’re getting someone who’s been vetted, trained, and backed by a company that will still be here if you need us again. That’s the real guarantee. Everything else is just words on a page.
Written by Carl Dutton, Owner at Mainspring Garage Door Co., serving San Marcos since 1984.