A balanced garage door is a beautiful thing. You disengage the opener, lift the door halfway, let go, and it stays exactly where you left it. Like it's hovering. Springs working with gravity, not against it.
An unbalanced door doesn't hover. It either drops or rises when you let go. If it drops fast, the springs are weak (under-wound, worn, or undersized for the door weight). If it rises fast, the springs are too strong (over-wound or oversized).
Either way, your opener is paying for the imbalance every cycle.
This post is the test that tells you. Five minutes. No tools.
Why balance matters
The torsion spring system is designed so that the spring counters the door's weight almost exactly. When properly balanced:
- The opener only has to overcome friction and inertia, not the full door weight.
- The motor runs at about 30–40% of its rated capacity.
- The opener can be expected to last its full design life (10–15 years for residential).
- The manual release works — you can lift the door by hand in a power outage.
When unbalanced:
- The opener fights gravity on every cycle.
- Motor heat output increases substantially. Brushes (older units) or windings (newer DC units) wear faster.
- Lifespan drops by 30–50%.
- Cables wear unevenly.
- Manual release may not work — door is too heavy to lift.
I see a lot of customers whose openers fail at year 7 instead of year 13. The most common cause: the door was out of balance for most of the opener's life and the customer didn't know.
The test
Pick a day when you have 10 minutes and the weather is dry. Open the garage door fully using the opener.
Step 1: Disconnect the opener.
Pull the red cord that hangs from the trolley (the part that connects the door to the opener carriage). Pull it downward and slightly toward the door. You'll hear a click. The trolley is now disconnected from the opener motor. You can move the door by hand.
(If you've never done this and the door is currently open — be careful. If the springs are completely failed, the door will come down hard when you disconnect. This is rare, but it's why I recommend starting with the door fully open the first time.)
Step 2: Lower the door manually.
Reach up and gently pull the door down. It should come down smoothly with moderate effort. If it slams down hard, springs are weak. If it resists strongly the whole way down, springs are too strong.
Step 3: Lift the door halfway.
From fully closed, lift the door so the bottom edge is about waist-height — roughly 90 cm to 120 cm off the floor. About halfway between fully closed and fully open.
Step 4: Let go.
Slowly remove your hands. Watch what the door does.
- Stays put exactly where you let go: door is balanced. Springs are correct. You're done.
- Slowly drifts down (a few centimetres over several seconds): slightly under-tensioned. Acceptable, but heading toward needing service in 6–12 months.
- Drops noticeably (more than 30 cm in 5 seconds): springs are weak. Schedule a service visit.
- Drops fast or slams down: springs are failing or undersized. Service soon.
- Slowly drifts up: slightly over-tensioned. Acceptable, but you'll wear out the opener at the top of cycle.
- Rises noticeably or rises fast: springs are over-wound or oversized. Service required.
Step 5: Reconnect the opener.
Close the door manually. Pull the red cord toward the opener motor until you hear it click back into engagement. (Some openers reconnect by simply running the opener — the trolley slides back into the carriage automatically. Check your manual.)
What balance does and doesn't tell you
A perfectly balanced door tells you the spring tension is correct today. It doesn't tell you:
- How much life the spring has left (cycle count)
- Whether the cables are intact (visual inspection from post 1)
- Whether the photo eyes work (post 16)
- Whether the opener's safety reversal is calibrated (also post 16)
But balance is the single best indicator of "are the springs doing their job." A balanced door means the spring system was correctly set up at some point. An unbalanced door means somebody adjusted it wrong, or the door has worn out of adjustment, or the spring is failing.
What a tech does to fix imbalance
If the door is slightly out of balance, the fix is usually a quarter-turn adjustment on the winding cone of one of the springs. This takes me 10–15 minutes and is part of any service visit. It does NOT require replacing the spring.
If the door is significantly out of balance and the springs are clearly old (visible corrosion, near end of cycle life), the fix is replacement. We don't adjust a spring that's about to fail — we replace it.
If the springs are new but the door is still imbalanced, the problem is usually: - Wrong spring size at original installation - Door weight changed (new heavier panels, replacement bottom seal etc.) - Mechanical bind somewhere in the track
Each of these requires diagnostic work to identify.
How often to test
I recommend the tilt test:
- Once in fall (before winter — catch any spring weakness before cold contraction)
- Once in spring (verify the door still balances after winter)
- After any door service (verify the work)
- Whenever the opener sounds different (post 6's noise dictionary — many noises are imbalance-driven)
Twice a year is plenty for most Richmond doors.
Cost reality check (2026, Lower Mainland CAD) - Tilt test: free. Do it yourself. - Quarter-turn spring adjustment (if springs are otherwise fine): $145–$245 service call - Full balance adjustment as part of an annual maintenance: included in $185–$285 maintenance visit - Spring replacement (if balance issue reveals worn springs): $385–$625 pair - Opener replaced because of premature wear from chronic imbalance: $725–$1,295 (the cost of not testing)
A Boyd Park story
A guy on Granville Avenue in Boyd Park called me last spring. His 2014 LiftMaster belt drive — only 11 years old — had stopped working. The motor would start, the belt would move, the door would lift maybe 15 cm and then the opener would stop and the door would close again. Classic "force limit triggered" behaviour.
He'd had two other companies look at it. One quoted him a new opener at $1,485. The other quoted $885 to "fix the force limit board."
I went out. Disconnected the opener. Did the tilt test. The door dropped from waist-height to fully closed in about 2 seconds. Heavy. Springs were 11 years old (original install with the door) and badly under-tensioned for the door weight.
The opener wasn't failing. The opener was correctly refusing to operate a door that was so out of balance the motor was hitting its safety force limit on every lift. The fix wasn't a new opener. The fix wasn't a new force-limit board. The fix was a spring pair: $485 with the IPPC-90 upgrade for his property which is two blocks off the dyke.
His 11-year-old opener is now working perfectly. It might run another 7–10 years now that it's not fighting gravity.
The other two companies were each willing to take 2 to 3 times my price for the wrong fix. Both probably didn't even do the tilt test before quoting. The tilt test is the diagnostic that finds the real problem in maybe 35% of "my opener is broken" calls.
That's the post.
Related reading
- The Two-Second Test That Tells You If Your Door Is Safe →
/blog/post-1-two-second-test/— the visual check that pairs with this physical test. - Why Your Door Sounds Like a Dying Animal →
/blog/post-6-door-noise-diagnosis/— many noises are imbalance-driven. - What Happens In a Richmond Power Outage (And the Manual Release) →
/blog/post-17-power-outage-manual-release/— the manual release that this test uses.