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Broken Spring Replacement in Waltham, MA

Quick answer

Replacement of a broken torsion or extension spring, the part that actually lifts the door, matched to the door's weight and cycle rating.

Spring replacement is Waltham's signature job, and its presentation is the one local operators describe: cold makes springs snap, announced by a loud bang and a door the opener can no longer lift. Springs are rated in cycles, about 10,000 cycles or 7 to 12 years of typical use, and a postwar Waltham door that has never had its springs documented is statistically on borrowed cycles. Replacement is in matched pairs, sized to the door's weight and measured from the broken spring, and the local published frame for the pair runs $250 to $500. Ask for the cycle rating in the quote; it is the difference between this repair and the same repair in six years.

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Signs you need broken spring replacement

A loud bang from the garage, then a door that will not open
A visible gap or separation in the coil spring above the door
The opener strains, hums, or lifts the door a few inches and stops
The door feels impossibly heavy when lifted by hand

What the job involves

1. Do not keep running the opener on a broken spring; it burns out the motor and can strip the gear, turning one repair into two.

2. The broken spring is measured (wire size, coil diameter, length) and the door is weighed, because the replacement must match the door, not the old spring's label alone.

3. Springs are replaced in pairs when both are the same age; the second spring has the same cycle count as the one that broke.

4. New springs are wound to spec and the door is balance tested: a balanced door stays halfway up when released.

5. Cables and end bearings are checked while the system is apart, since they wear on the same schedule.

What affects the price

Torsion versus extension system, and single versus double spring doors
Door weight and height (tall and insulated doors need heavier springs)
Cycle rating chosen: standard springs are rated around 10,000 cycles, high cycle options cost more and last longer
Whether the opener was damaged by running against the broken spring

When it is an emergency

A broken spring is a same day call when the car is trapped or the door is stuck open, and a do not use it call either way. Never try to wind or unwind a torsion spring with improvised tools: the spring holds enough stored energy to break bones, and this is the one job in the garage that injures DIYers every year.

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Broken Spring Replacement across the Waltham area

Downtown and Moody Street South Waltham North Waltham Warrendale Lakeview The West End and Stow Street Side

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