The door opened easily yesterday. Today it barely moves. Or the remote works but feels like the motor is laboring. This sudden heaviness is never normal. Furthermore, it’s never something to ignore. Your door is sending a clear message—something has changed internally and needs immediate professional attention.
The most common cause is spring tension loss. Two torsion springs mounted above your door opening counterbalance the door’s weight. Spring tension weakens through spring tension weakens gradually over years as metal fatigues. Sometimes this happens slowly. Sometimes a spring snaps completely. But occasionally, tension simply fails overnight—especially during temperature swings. When one spring loses tension, the other absorbs extra load. The door suddenly feels impossibly heavy.
Here’s why this matters: a door without proper spring tension is dangerous. The opener’s motor wasn’t designed to lift the full door weight alone. When springs fail, the opener works overtime. This strains gears, burns out capacitors, and damages the motor itself. Additionally, a door held up only by the opener motor can drop unexpectedly, causing serious injury or property damage.
The second cause is cable failure. Cable supports the load through cable supports the load alongside springs. A fraying or snapped cable reduces load distribution. The door feels heavier because it literally is—one cable carries load instead of two. Metal drums spin the cables, winding and unwinding. If a cable frays or breaks, the entire system becomes unbalanced. Consequently, the door resists opening.
Opener struggling through opener struggling signals multiple possible failures. A worn drive gear inside the opener motor slips instead of gripping. The motor spins but the door barely moves. Worn gear teeth mean the motor has to work harder to achieve any movement. The opener heats up. Capacitors strain. Eventually the motor burns out completely. Replacing an opener costs $200–$400. Fixing a worn gear early through professional service costs far less.
Commercial door strain through commercial door strain happens faster than residential doors because commercial doors open and close many times daily. Springs fail sooner. Cables fray faster. Business owners who ignore heaviness lose operational access. A broken commercial door means no vehicle access, shipments delayed, and revenue affected. Professional maintenance on commercial doors isn’t optional—it’s operational necessity.
Never attempt to force a heavy door. Don’t manually lift it or override the opener. These instincts cause injury. Heavy doors sometimes require two people to move safely. Worse, you might snap a cable or damage the tracks. Call TrueFix instead. They diagnose the problem immediately. Most heaviness issues resolve with a single service visit.
Complete door replacement through complete door replacement becomes necessary if springs have lived their full cycle (roughly 10,000 cycles or 7–10 years). A door that’s suddenly heavy after 8 or 9 years likely means springs are failing. Attempting major repairs on worn springs is often throwing money away. Replacement makes economic sense.
Temperature swings accelerate heaviness symptoms in Calgary. A sudden temperature drop causes metal to contract, increasing spring tension stress. A rapid warm-up causes expansion. These daily swings in summer and spring make spring fatigue visible quickly. What felt fine yesterday feels heavy today.
The important thing: call professionals. TrueFix responds same-day to heaviness complaints. They test spring tension precisely. They inspect cables visually and by touch. They run the opener and diagnose what’s failing. This assessment takes 15 minutes. Then they explain the repair, quote a price, and proceed only with your approval. Never worry that they’ll oversell you—TrueFix is known for honest assessments.
FAQs
Q: Is a heavy garage door ever normal?
No. Normal operation should feel smooth and balanced. Sudden heaviness indicates component failure—usually springs or cables. Don’t ignore it. Call a professional immediately. Operating a heavy door risks injury and damages your opener further.
Q: Can I fix a heavy door myself?
Absolutely not. Spring and cable work is dangerous without proper tools and training. Torsion springs hold extreme tension. A miscalibrated spring can injure or kill. Cable work risks entanglement and cutting injuries. Let professionals handle this. TrueFix guarantees safe diagnosis and repair.
Q: Why didn’t my door feel heavy yesterday if it was broken?
Spring failure sometimes happens suddenly—overnight—especially during temperature changes. Other times wear is gradual but suddenly becomes noticeable when temperatures shift. Either way, the sudden change means something broke or failed completely. Professional assessment clarifies what happened.
Q: How much does fixing a heavy garage door cost?
Spring replacement runs $180–$280 depending on size. Cable replacement is $150–$220. Opener gear or motor repair ranges $120–$350. TrueFix quotes the exact price before work begins. Most heaviness fixes happen in under 2 hours same-day.
Q: Will my warranty cover this repair?
Coverage depends on your warranty terms and whether maintenance was completed annually. TrueFix works with your warranty. They understand coverage specifics. Many repairs qualify for warranty coverage. Documentation of annual tune-ups strengthens warranty claims.