The short answer
In an Arizona summer, a remote that stops responding or a backup battery that no longer holds a charge is worth checking first, because heat shortens battery life. A door that binds, drifts or will not lift needs a trained technician.
Why a Hot Garage Is Hard on Batteries
NWS counted 143 days at or above 100°F in Phoenix in 2024, and Clopay, a door manufacturer, says garage temperatures can climb 20°F or more above outdoor temperatures; that is manufacturer guidance, not a measurement of any one garage. Battery University reports that each 15°F rise cuts the life of a sealed lead-acid battery in half, though opener batteries vary by model.
Safe Checks Before You Call
These checks avoid the springs and cables.
- Replace the remote's battery with the type its manual specifies, and keep small batteries away from children.
- If the opener has a battery backup, read its status light and follow the manual's test steps; one opener manual calls for a yearly test.
- Check each safety sensor light: both should glow steadily, and one that is off or not steady usually points to a misaligned or blocked sensor or a wiring problem.
When It Is Not the Battery
A door that binds, drifts, feels heavy or will not lift usually points to the door, not the opener. Springs, cables and other hardware are under extreme tension and belong to a trained technician.
Published by Arizona Garage Pros, a regional brand of USA Garage Pros · Updated 2026-10-19