If you disconnect the opener and the door feels extremely heavy, the springs are no longer carrying the load. That is a safety issue, not a workout. Keep people clear, do not force the door, and avoid YouTube spring-winding attempts.
A door that only opens a few inches with the opener, or an opener that hums without lifting, often has the same root cause. Start with our hub: garage door won't open and broken spring signs.
Replacing springs restores balance so the opener only fine-tunes travel — it should not be fighting hundreds of pounds. We stock common residential sizes and test balance before we leave. See repairs.
Heard a bang, or the door will not stay open? If you live in Langley, Surrey or White Rock, British Columbia, and need help with your garage door or entry door, Everra Doors is here to help. Get a quote or ask about emergency service.