The Great Spring Debate: Single Spring Replacement vs. Replacing Both Springs in Las Vegas

When one garage door spring breaks, the technician arrives and asks, “Should we replace just the broken spring, or both springs?” The broken spring costs $120-150. Replacing both costs $220-280. That’s an extra $100-130 you didn’t budget for. So what’s the right call?

The honest answer: It depends on your spring’s age, usage, and risk tolerance. But in Las Vegas, where heat accelerates wear, the math favors replacing both springs 80% of the time. Here’s why—and when single replacement makes sense.

In this guide, we’ll break down the cost-benefit analysis, explain when each option makes sense, and show you exactly how to calculate whether replacing both springs saves money in your specific situation. By the end, you’ll have a clear answer based on data, not salesmanship.

Why Your Garage Door Has Two Springs (And Why They Fail Together)

Most double-garage doors (16-18 feet wide) use two torsion springs mounted above the door. These springs work in tandem to lift 300-400 lbs of door weight. Here’s the key physics:

• Both springs were installed on the same day
• Both springs have experienced the exact same number of cycles (every time the door opens/closes, both springs cycle once)
• Both springs have been exposed to identical heat/dust conditions
• Both springs are losing tensile strength at the same rate

When one spring breaks, the other spring isn’t “still good”—it’s within 500-1,000 cycles of failure. That translates to 3-8 months for the average Las Vegas homeowner using the door 4-5 times per day.

The Case for Replacing Both Springs

1. You’ll Need a Second Service Call Within 6-12 Months

This is the #1 reason professionals recommend replacing both. When you replace just one spring, you’re paying for:

• Service call fee: $75-100
• Labor: $50-75
• New spring: $40-60
• Total: $165-235

When the second spring fails 6-12 months later, you pay all those costs again: another $165-235. Total two-service-call cost: $330-470.

Compare that to replacing both springs in one visit:

• Service call fee: $75-100 (same, you only pay once)
• Labor: $80-120 (slightly more, but not double)
• Two new springs: $80-120
• Total: $235-340

Savings by replacing both at once: $95-130

2. Door Balance and Safety Issues

When you replace one spring but leave the old spring in place, you create a mismatched pair:

• New spring: Full tension, lifts with 100% force
• Old spring: 60-80% tension remaining, lifts with reduced force

This imbalance causes the door to lift unevenly—one side rises faster than the other. Over time, this stresses the opener motor and can damage the door tracks. Misaligned doors also pose safety risks: if the old spring fails while the door is open, it can drop suddenly and injure someone.

3. The Las Vegas Heat Factor

In moderate climates (Seattle, Denver), a spring might have 2,000-3,000 cycles remaining when its partner fails. But in Las Vegas, heat stress causes springs to degrade more uniformly—when one fails at 8,000 cycles, the other typically fails within 500-800 cycles.

Translation: In Vegas, the “replace both” rule applies even more strongly than in other states.

The Case for Replacing Just One Spring

There are legitimate situations where single-spring replacement makes sense:

1. Springs Are Less Than 2 Years Old

If your springs are brand new (under 24 months) and one fails, it’s likely a defective spring rather than normal wear. In this case, replace the defective spring only—the other spring has 5,000-8,000 cycles remaining.

Pro tip: Check your warranty. Most premium springs (LiftMaster, Clopay, Amarr) have 3-year warranties. If the spring is under warranty, replacement may be free or discounted.

2. Extreme Budget Constraints

If you’re facing a genuine financial emergency and can’t afford the extra $100-130 today, replace one spring now and budget for the second spring replacement in 6-12 months. This isn’t optimal, but it keeps your door functional.

Important: Don’t skip the second replacement entirely. Mark your calendar for 6 months out and set aside $20/month so you’re prepared when the second spring fails.

3. You Plan to Replace the Entire Door Within 1 Year

If you’re planning a full garage door replacement in the next 6-12 months, single-spring replacement makes sense—you won’t be using that second spring long enough to justify the cost.

The Break-Even Calculator: Should YOU Replace Both Springs?

Use this decision tree to determine your best option:

Step 1: How Old Are Your Springs?

• 0-2 years: Replace one spring only (likely defective)
• 3-4 years: Replace both springs (second failure imminent)
• 5+ years: Definitely replace both springs (the second spring is past its prime)

Step 2: How Often Do You Use Your Door?

If you use your door 6+ times per day (families with teenagers, multi-car households), the second spring will fail within 3-6 months. Replacing both at once saves you an emergency service call during a busy workday.

If you use your door 2-3 times per day, you might get 9-12 months before the second spring fails—but you’ll still need that second service call eventually.

Step 3: Calculate Your ROI

Compare the costs:

Option A: Replace One Spring Now
Cost today: $165-235
Cost in 6-12 months: $165-235
Total: $330-470

Option B: Replace Both Springs Now
Cost today: $235-340
Cost in 6-12 months: $0
Total: $235-340

Savings by choosing Option B: $95-130

What About Upgrading to High-Cycle Springs?

If you’re replacing both springs, this is the perfect time to upgrade to 25,000-cycle springs (vs. standard 10,000-cycle springs). The upgrade costs an extra $30-50 but extends spring lifespan from 5-7 years to 10-15 years in Las Vegas.

Here’s the math:

• Standard springs: $235-340 every 5-7 years = $470-680 over 15 years (2 replacements)
• High-cycle springs: $265-390 once = $265-390 over 15 years (1 replacement)

Lifetime savings: $205-290

For more details on spring longevity, see our Complete Spring Repair Guide for Las Vegas.

Common Myths About Spring Replacement

Myth 1: “The Other Spring Looks Fine, So It Must Be Fine”

Reality: Springs fail internally before they show external signs. By the time you see rust, gaps in the coils, or visible damage, the spring is already past 80% of its lifespan. The second spring may look fine today, but it’s already experiencing the same metal fatigue as the broken one.

Myth 2: “I Can Save Money by Waiting Until the Second Spring Breaks”

Reality: You’ll pay $95-130 more for two separate service calls vs. one combined service call. Plus, the second spring will fail at the worst possible time—usually when you’re rushing to work or during extreme weather.

Myth 3: “Technicians Only Recommend Replacing Both to Make More Money”

Reality: While some dishonest technicians upsell unnecessarily, reputable companies (like A Plus Garage Doors) base their recommendations on data: 85-90% of second springs fail within 12 months after the first spring breaks. Replacing both prevents a callback, which actually reduces our revenue from emergency service fees.

Protect Your Garage Door with the Diamond Service Club

Spring failures don’t have to be emergency situations. By joining our exclusive Diamond Service Club, you get:

• Annual spring inspections that predict failure 3-6 months in advance
• Cycle-life tracking so you know exactly when to budget for replacement
• 10% discount on all spring replacements (saves $23-34 per replacement)
• Priority scheduling so you can replace springs on your schedule, not the spring’s
• Proactive replacement recommendations based on actual spring condition, not scare tactics

Our Diamond Service Club members replace springs before they break—avoiding the 6 AM emergency when you can’t get your car out of the garage. We’ll tell you exactly when to replace both springs, and you’ll never wonder if you’re being oversold.

What Our Las Vegas Customers Say

Frequently Asked Questions About Replacing Garage Door Springs

How long do I have after one spring break before the second one fails?

In Las Vegas, the second spring typically fails within 3-12 months, depending on usage. Heavy users (6+ cycles/day) see failure in 3-6 months. Light users (2-3 cycles/day) might get 9-12 months.

Can I use my garage door with one broken spring?

Short answer: No. With one spring broken, the remaining spring can’t safely lift the door’s weight. Modern openers have safety sensors that detect the imbalance and disable the opener. Attempting to manually lift the door risks back injury (doors weigh 300-400 lbs) and can damage the opener.

What if only one spring broke but they’re 6+ years old?

Definitely replace both. At 6+ years, both springs are well past their expected lifespan in Las Vegas heat. The second spring could fail within weeks.

Do single-door garages need to replace both springs?

Single-door garages (8-10 feet wide) typically use one torsion spring or two extension springs. If you have two extension springs and one fails, the same “replace both” logic applies. If you have one torsion spring, there’s no second spring to worry about.

Will replacing one spring void my warranty?

Most manufacturers recommend replacing both springs to maintain door balance. Replacing just one may void your door warranty if the imbalance causes damage to the track or panel. Check your warranty documentation before deciding.

Can I negotiate a discount if I replace both springs?

Many companies (including A Plus) already offer two-spring replacements at a discount compared to two separate service calls. However, ask about maintenance club memberships (like our Diamond Service Club) that provide 10% off all spring replacements—an extra $23- $ 34 in savings.