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Read reviewsSullivan County, NH
Broken spring, door off track or opener on the blink in Cornish? Premier's licensed technicians repair, replace and install garage doors across Sullivan County — in most cases the same day.

Cornish is home to about 1,616 people in Sullivan County. Homes here run from mill-town homes, farmhouses and rural properties with detached garages, and cold inland winters and snow keep our technicians busy with spring replacement and opener repair.
Our technicians cover Cornish together with Concord, about 41 miles away, and the towns around it.
Spring replacement
Opener repair
Weather-seal repairs
Our work
Reviews
“Excellent service from start to finish! The technician arrived on time, repaired our off-track door, and gave helpful maintenance tips. Their professionalism makes them my top choice for local garage door repair.”
“They saved my weekend! After our garage spring snapped Friday afternoon, Premier Garage Repair showed up within two hours and fixed it quickly. Their responsiveness was impressive.”
FAQ
In most cases, yes. We cover Cornish and the rest of Sullivan County, and same-day visits are available most days. Call (603) 713-5339 or book online and pick an arrival window.
Yes. Broken springs are one of the most common calls we get in Sullivan County, especially in the first cold snaps of winter. Our vans carry common torsion and extension springs, so most spring jobs are finished in one visit.
Yes. We measure, help you choose a style and insulation level, remove the old door and install the new one with new springs, tracks and seals.
It depends on the part and the door. The technician diagnoses the problem and gives you the price before any work starts — no hidden fees.
Book online
Pick a day and an arrival window. We'll call to confirm before anyone comes out.
| Mon | 8:00 AM – 8:00 PM |
|---|---|
| Tue | 8:00 AM – 8:00 PM |
| Wed | 8:00 AM – 8:00 PM |
| Thu | 8:00 AM – 8:00 PM |
| Fri | 8:00 AM – 5:00 PM |
| Sat | Closed |
| Sun | 8:00 AM – 8:00 PM |
We will call you shortly to confirm your appointment.