Technician inspecting a garage door spring above a sectional garage door

Maintenance & Safety

Broken Garage Door Spring? Signs, Safety and Replacement Cost

25 September 2026 · Prestige Door Services

A broken garage door spring can turn a door that normally feels easy to operate into a very heavy moving object.

Springs carry much of the load involved in opening and closing the door. When one fails, the symptoms can appear suddenly and the opener may no longer be able to move the door safely.

Common signs of a broken garage door spring

Possible warning signs include:

  • A loud bang from the garage
  • The door suddenly feeling unusually heavy
  • The opener running but struggling to lift the door
  • The door lifting only part-way
  • One side of the door moving differently from the other
  • A visible gap or break in a spring
  • Cables appearing loose after a spring failure

Some of these symptoms can also be caused by cables, rollers, tracks or opener problems, so the cause should be properly diagnosed as part of a garage door repair.

Can you keep using the garage door with a broken spring?

It is better to stop repeatedly operating the door until the problem has been assessed.

Continuing to run the opener can place additional load on the motor and other door components.

A garage door can be very heavy without the spring system doing its job. Do not lift or force a damaged door yourself. Our guide to whether you should repair or replace a garage door opener explains why a straining motor may be reacting to a fault elsewhere in the door.

Why garage door spring replacement is not a DIY job

Garage door springs can store significant mechanical energy.

Spring replacement, adjustment and work involving connected cables or brackets should be handled by someone with the correct tools and experience.

What affects garage door spring replacement cost?

The final cost can depend on:

  • The type of spring system
  • The size and weight of the garage door
  • Whether one or multiple springs require attention
  • The condition of cables and related hardware
  • Access to the spring assembly
  • Whether other damage occurred when the spring failed
  • The timing and location of the repair

A technician should identify the correct spring for the door rather than choosing a replacement based only on appearance.

Should both springs be replaced at the same time?

Some garage doors use paired springs.

If one spring has failed and the other is the same age and has completed a similar number of cycles, a technician may recommend replacing both. However, this depends on the door and spring system, so it is not an automatic requirement.

What causes garage door springs to fail?

Common contributing factors can include:

  • Normal fatigue from repeated opening and closing
  • Corrosion
  • Poor door balance
  • Incorrect spring selection
  • Lack of inspection or maintenance
  • Damage elsewhere in the door system increasing load

Spring life varies by spring type, door weight, use and installation, so there is no single lifespan that applies to every door.

Can regular servicing prevent a broken spring?

A service cannot guarantee a spring will never fail, but routine inspection can identify corrosion, balance problems, unusual noises and other signs that the door system needs attention. See our practical guide to garage door maintenance for more information.

What should you do if you hear a loud bang from the garage?

If you hear a loud bang and the door suddenly becomes heavy or refuses to open normally, stop repeatedly using the opener.

Keep people clear of the door and arrange an inspection. Do not dismantle, adjust or test the spring yourself.

Garage door spring repairs in Brisbane and South East Queensland

Prestige Door Services repairs garage door spring faults and related door problems across its existing service area.

How much does garage door spring replacement cost?

The cost depends on the door, spring type, number of springs, access and whether other components were damaged. The safest approach is to have the door assessed so the correct spring and repair scope can be identified.

Can I replace a garage door spring myself?

Garage door springs can be under significant tension and incorrect handling can cause serious injury or additional damage. Spring replacement and adjustment should be left to an experienced garage door technician.

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