How much does a garage door spring cost by size?

Spring size affects the parts price by $10 to $40, but labor dominates the total bill regardless of size. The bigger cost decision is whether you get standard-cycle springs or high-cycle springs, which last two to three times longer for roughly $50 to $100 more.

What Do Garage Door Springs Cost by Size?

Torsion springs, the horizontal coil mounted above the door on the shaft, vary in price based on wire size, inside diameter, and length. These three measurements determine how much lift force the spring generates. A spring for a lighter single-car door costs less than one for a heavy two-car door, but the price difference in parts is modest compared to the labor cost.

Standard-cycle torsion springs for a single-car door (usually under 150 pounds) cost $40 to $80 per pair in parts. For a double-car door (150 to 250 pounds), parts run $60 to $120 per pair. High-cycle torsion springs rated at 20,000 cycles or more cost $80 to $200 per pair. Installed, total costs run $150 to $250 for a single-car job and $200 to $350 for a double-car door with standard springs.

Extension springs, which run along the sides of the door on older installations, cost less per pair: $20 to $50 for a single-car door, $30 to $70 for a double-car door. Installed, extension spring jobs typically run $75 to $200.

Labor accounts for $100 to $200 of these totals regardless of spring size. Spring work requires winding bars and a controlled release of stored tension. CPSC safety data shows this work causes significant injuries every year when attempted without proper tools or training.

Spring Type	Door Size	Parts Cost per Pair	Installed Cost
Torsion, standard cycle	Single car	$40 to $80	$150 to $250
Torsion, standard cycle	Double car	$60 to $120	$200 to $350
Torsion, high-cycle	Single or double	$80 to $200	$250 to $450
Extension springs	Single car	$20 to $50	$75 to $175
Extension springs	Double car	$30 to $70	$100 to $200

How Spring Size Is Measured and Why It Matters

Torsion spring sizing follows three measurements. Wire diameter is the most important. Common residential wire sizes range from .225 inches for lighter doors to .295 inches or larger for heavy two-car doors. A spring with the wrong wire size will not balance the door correctly. The opener will strain to move it, or the door will fall when disconnected from the opener.

Inside diameter is typically 1.75 or 2 inches for residential applications. Larger inside diameter springs fit over a 1-inch torsion bar. Smaller ones fit over a 5/8-inch bar. Using the wrong inside diameter means the spring physically will not fit on the shaft.

Length determines the spring's cycle capacity and lift. Longer springs are available in high-cycle configurations and handle more total revolutions before fatigue failure. A standard residential torsion spring is rated for roughly 10,000 cycles. At four cycles per day (twice in, twice out), that is about seven years. DASMA publishes detailed spring specification tables that link door weight to the correct wire size and length for proper balance.

Standard vs. High-Cycle Springs: Is the Upgrade Worth It?

High-cycle springs rated at 20,000 to 100,000 cycles cost $40 to $120 more per pair but last significantly longer. At a typical residential usage rate of four cycles per day, a 25,000-cycle spring lasts about 17 years compared to seven years for a 10,000-cycle standard spring. The upgrade typically adds $50 to $100 to the total installed invoice.

In Colorado's climate, the upgrade makes particular sense. Cold temperatures reduce steel ductility, meaning springs that are already near the end of their cycle life are more likely to snap on a cold January morning. Replacing springs proactively before they break, and upgrading to high-cycle at the same time, avoids the inconvenience of a door locked shut when it is 10 degrees outside.

If your current springs are more than eight years old, have a technician check the coil spacing and the surface condition at the next service visit. Unevenly spaced coils or visible rust on the spring body are signs that replacement is approaching.

Why Springs Must Be Replaced as a Matched Pair

Torsion systems on two-car doors usually have two springs, one on each side of the center bearing plate. When one spring breaks, the other has typically accumulated the same cycle count and is near the end of its life as well.

Replacing only the broken spring leaves a mismatched system: one new spring and one aged spring generate unequal torque. That imbalance stresses the cables and can tilt the door slightly over time. The second spring will likely break within months. Paying to replace both springs at the same time costs $40 to $80 more in parts but saves you a second service call, a second labor charge, and the risk of a door failure at a bad time.

How to Read DASMA Spring Color Codes

DASMA established a color-coding system for torsion springs that helps technicians identify the correct replacement spring without measuring every coil. The end cone color indicates wind direction: red means right-wound, black means left-wound. A second color band on the cone indicates wire size.

Extension springs use a different color system. The color of the spring body indicates its pull strength in pounds. Knowing your spring's color helps when ordering or when verifying that a replacement is the correct match for your door weight.

Most torsion springs do not give much warning before they break. The characteristic sound is a loud bang from the garage, often described as a gunshot, followed by the door becoming too heavy to lift. You can extend spring life with a few steps. Lubricate the spring coils twice a year with a silicone or lithium garage door spray. A light coat along the coil length reduces friction as the spring winds and unwinds. Do not use WD-40 or oil-based lubricants, which attract grit. Inspect the springs each fall: look for gaps between coils where a section has stretched under fatigue, visible rust on the coil surface, or a section that looks flatter than the rest. If your springs are more than eight years old and you use the door four or more times a day, ask a technician to assess them at your next service visit. A proactive replacement at $200 to $350 is far less disruptive than a broken spring that traps your car in the garage on a cold Front Range morning. Proactive replacement also lets you choose high-cycle springs rather than being forced to match whatever standard spring is in stock on an emergency call.

G Brothers Garage Doors stocks a wide range of torsion and extension springs and offers spring replacement across the Denver metro and Front Range. We carry both standard and high-cycle springs on our service trucks, so most spring breaks can be completed in a single visit. Free estimates, same-day service on most spring breaks, licensed and insured.