CHI Overhead Doors Extension Spring Replacement is one of the most common calls we get. A technician will explain what is wrong and what it will cost before starting, and test the door before leaving. Side-mounted extension springs replaced in matched pairs, with safety cables installed. Our technicians service CHI Overhead Doors garage doors regularly and know where the model and date labels are, which makes ordering the right part quicker. CHI Overhead Doors builds residential and commercial sectional doors in Arthur, Illinois, and sells them through independent dealers.
Safety first: springs and cables hold hundreds of pounds of tension. Don't try to adjust or remove them yourself, and don't run the opener on a door that's crooked or has a broken spring.
Signs you need CHI Overhead Doors extension spring replacement
- A stretched, sagging or snapped spring along one of the horizontal tracks
- The door lifts unevenly or sits crooked
- A missing or broken safety cable through the spring
- Pulleys squealing or wobbling
Common causes
- Metal fatigue from years of stretching
- Rust and worn pulleys
- Mismatched springs from an earlier repair
What you can check yourself
- Make sure each extension spring has a safety cable running through it. That cable keeps a snapped spring from flying across the garage.
- Look at the pulleys and cables for fraying.
- Don't try to stretch or re-hook an extension spring under tension.
Still stuck? Our free symptom checker and troubleshooting wizard walk you through it step by step.
How we handle CHI Overhead Doors extension spring replacement
- Open the door fully and secure it so spring tension is released
- Replace both springs as a matched pair, color-coded for door weight
- Replace worn pulleys and lift cables if needed
- Install or replace the safety containment cables
- Balance the door and test it through several cycles
Typical CHI Overhead Doors extension spring replacement prices
What moves the price:
- Door size and weight (single or double, steel or wood)
- Which parts need replacing and whether they are in stock
- Spring type and cycle rating
- Emergency or after-hours timing
These are typical U.S. ranges, not a quote. You get an exact price for your door before any work starts. For a quick estimate, try the repair cost calculator.
Other CHI Overhead Doors services
- CHI Overhead Doors Garage Door Repair
- CHI Overhead Doors Torsion Spring Replacement
- CHI Overhead Doors Garage Door Cable Repair
- CHI Overhead Doors Garage Door Roller Replacement
- CHI Overhead Doors Garage Door Track Repair
- CHI Overhead Doors Off-Track Garage Door Repair
- CHI Overhead Doors Garage Door Panel Replacement
- CHI Overhead Doors Weather Seal Replacement
- CHI Overhead Doors Garage Door Installation
- CHI Overhead Doors Commercial Garage Door Repair
- CHI Overhead Doors Rolling Steel Door Repair
Serving Cottleville, MO and nearby towns
The swing from hot, humid summers to freezing winters in Missouri is hard on spring steel. Rust shortens spring life, and the first cold snap is when a worn spring tends to break.
Technicians serve all of Cottleville (ZIP code 63338), plus Weldon Spring (3 mi), Saint Peters (4 mi), Dardenne Prairie (4.4 mi) and O'Fallon (5.1 mi). Call (833) 435-8883 to book a visit in Cottleville.
CHI Overhead Doors Extension Spring Replacement: frequently asked questions
How much does CHI Overhead Doors extension spring replacement cost in Cottleville, MO?
CHI Overhead Doors Extension Spring Replacement typically costs $150-$350 including parts and labor, and usually takes 1-1.5 hours. The exact price depends on your door and the parts it needs, and you get it before any work starts. Call (833) 435-8883 for a quote.
Can you do CHI Overhead Doors extension spring replacement the same day?
Often, yes. When a technician is available we can usually come the same day, and common parts are carried on the truck. Doors that won't close or have a broken spring are treated as priority calls, and emergency service is available.
Is CHI Overhead Doors extension spring replacement covered by a warranty?
Our work comes with a 90-day labor warranty on repairs. New parts and doors also carry the manufacturer's warranty, and CHI Overhead Doors warranty terms vary by product and age. Ask for the warranty details in writing with your quote.
Are your technicians licensed and insured?
Our technicians are insured, and where Missouri or Cottleville requires a contractor license for garage door work, the job is done under that license. You're welcome to ask for proof when you book.
Should I repair or replace my garage door?
A good rule of thumb: if the repair costs more than about 50% of a replacement, or the garage door is near the end of its life, replace it. A garage door typically lasts 15 to 30 years. If several panels are damaged, the door is rusted through or rotted, or parts are discontinued, replacing it is often better value. Springs are the exception: a broken spring is always replaced, never repaired. Our free repair vs. replace calculator can help you compare.