How to Winterize Your Landscape Lighting
By the JHL Landscape Lighting design team · Updated 2026-06
Winter on the Main Line is hard on outdoor systems. Freeze-thaw cycles heave the soil, snow loads bury fixtures, and salt and runoff work their way into connections. A low-voltage landscape lighting system is built to handle all of it, but a little seasonal care keeps it performing and protects your investment. Here is how to put your lighting to bed for the cold months.
Adjust the timer for shorter days
The most important winter task is not physical, it is the schedule. Sunset arrives hours earlier in December than in June, so a timer or photocell that worked all summer may now leave your home dark at dusk or burning past dawn. Update astronomical timers for the new season, or confirm your photocell still triggers correctly. Many controllers shift automatically, but it is worth a quick check.
If you run the system on a fixed on-off time rather than a sun-based schedule, plan to revisit it as the season deepens. Aim to have the lights come up just before dusk so your home is never caught dark during the early-evening hours when most arrivals and departures happen, and set them to switch off after the household has settled for the night.
Protect fixtures from snow and ice
LED fixtures run cool, so they will not melt their way out of a snowbank the way old halogen sometimes did. After a heavy storm, gently clear snow off well lights and recessed fixtures so they are not buried for weeks. Take care with the shovel and especially the snowblower: most fixture damage in winter comes from equipment, not weather.
Mark fixtures near driveways and walks before the first snow so your plow service knows where they are. A small flag or stake can save a fixture that would otherwise be clipped under a foot of white.
Check connections and transformers
Quality low-voltage connectors are sealed against moisture, but it is wise to inspect any visible connections in late fall, before the ground freezes and access becomes difficult. Make sure the transformer cabinet is closed and latched and that nothing is blocking its vents. The transformer can stay powered and running all winter; there is no need to shut a healthy system down.
Keep mulch, leaves, and debris cleared from around fixtures and transformer bases so moisture does not pool and freeze against them.
Watch for heaving
Repeated freezing and thawing can slowly push staked fixtures out of plumb, leaving lights aimed at the sky or tilted into a walkway. Note any that have shifted and reseat them once the ground softens in spring. This is normal and easily corrected, and it is one of the main reasons we recommend a quick spring walk-through every year.
Most of winterizing is simply paying attention: a corrected timer, clear fixtures, and a quick fall inspection. If you would rather hand it off, our seasonal maintenance service covers all of it and includes a spring tune-up to re-aim anything the frost moved. If your system needs a winter check or a repair, reach out for a free consultation and we will keep your nights glowing through the season.
Want this done right the first time? See our Lighting Maintenance & Repair service or book a free on-site consultation — 5.0★ across the Main Line & Chester County.