If one spring breaks, the temptation is to replace only the broken one and move on. It’s cheaper upfront, and the logic seems reasonable — why pay for a spring that isn’t broken?

Here’s the problem: the other spring probably isn’t far behind. Understanding why helps you make a more informed decision and avoid paying for the same repair twice within a few months. In most cases, it’s cheaper in the long run to have your spring repair technician replace both at once.

Why the Second Spring Is a Concern

Garage door springs have a rated lifespan measured in cycles — one cycle being a single open-and-close. A standard spring is typically rated for 10,000 cycles. Higher-quality springs are rated for 20,000 or even 30,000.

If your home has two springs and they were installed at the same time — which is almost always the case — both springs have gone through the exact same number of cycles under the exact same conditions. When one fails, the other has the same amount of wear on it. It hasn’t been resting while the broken one did all the work. Both have been stretching, winding, and releasing in tandem since the day they were installed.

Replacing only the broken spring leaves you with one new spring and one that’s already at or near the end of its life.

The Case for Replacing Both

It’s more cost-effective over time. A second service call, a second labor charge, and a second spring purchase will cost more than replacing both during the same appointment. The spring itself is a relatively small portion of what you’re paying for — most of the cost is the technician’s time and travel.

The door will be better balanced. A new spring and a worn spring don’t have the same tension. That imbalance puts uneven stress on your cables, rollers, and opener — components that are more expensive to repair or replace than a spring.

You avoid a second disruption. A broken spring means your car is potentially stuck in or out of the garage until it’s fixed. Going through that once is enough.

When Replacing Just One Makes Sense

There are situations where replacing only the broken spring is the right call:

The springs are different ages. If one spring was replaced recently and the other is the original, they’re not on the same wear timeline. A technician can assess the condition of the remaining spring and give you an honest recommendation.

The door only has one spring. Single-spring systems are common on smaller or older doors. If there’s only one spring, there’s only one to replace.

Budget constraints are real. If replacing both isn’t financially possible right now, replacing the broken one gets you back up and running. Just be aware the second spring may need attention soon, and plan accordingly.

What About Spring Upgrades?

A spring replacement is also a good opportunity to upgrade. Many homes have builder-grade springs rated for 10,000 cycles — roughly 7 to 10 years of typical use. When we replace springs, we carry commercial-grade springs rated for 25,000+ cycles. The price difference is modest, and the lifespan difference is significant — especially in Minnesota, where cold temperatures put extra stress on metal components every winter.

If your current springs are standard-grade and have already broken once, it’s worth discussing whether an upgrade makes sense for your situation.

How to Know What You Should Do

You don’t need to figure this out on your own. When a technician arrives to repair a broken spring, part of the job is inspecting the full system — including the condition of any remaining springs. They can tell you the type, the approximate remaining lifespan, and what makes the most sense for your door and your budget.

There’s no obligation to replace both. A good technician will give you the information and let you decide.

The Short Answer

If both springs are original and the same age, replacing both during the same visit is almost always the smarter move. If the circumstances are more complicated — mismatched ages, a single-spring system, or one spring that’s relatively new — a technician can assess the situation and tell you what actually makes sense.

When in doubt, ask. You should always get a clear explanation before any work begins.