Topic
Maintenance
A swamp cooler is a simple machine that punishes neglect. Twenty minutes of work at the right times keeps the air cold, the water clean and the cabinet rust-free for many seasons.
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Swamp Cooler Maintenance Schedule: What to Do Monthly, Seasonally and YearlyA roof-mounted swamp cooler needs a full startup service each spring, a quick visual check every week or two in summer, a reservoir flush and belt check monthly, a mid-season inspection of pads and pump, and a winterizing shutdown in fall. Pads typically need replacing every one to three seasons depending on media and water hardness.
The cooler year at a glance
| When | Job | Guide |
|---|---|---|
| Spring, before first use | Remove covers, clean pan, check pads, pump, belt, float and bleed-off | Spring startup checklist |
| Every 2 to 4 weeks in season | Look at pad wetting, water level and smell; clear distributor clogs | Maintenance schedule |
| Midseason | Drain and rinse pan, check belt tension, replace aspen pads in hard-water areas | How to clean a swamp cooler |
| Fall, after last use | Shut off and drain water, disconnect pump, clean, cover and seal the duct | How to winterize |
All maintenance guides
- Swamp Cooler Spring Startup Checklist: How to Get Your Cooler Ready for Summer
Step-by-step spring startup for a roof swamp cooler: safety, cleaning the pan, pads, water line, float, pump test, belt tension, motor oiling, and final checks.
- How to Clean a Swamp Cooler: Pan, Pads, Pump, Distribution and Scale
How to clean a swamp cooler safely: drain and scrub the pan, remove scale with vinegar, clean the pump and spider, rinse pads and stop musty odors.
- Mold and Swamp Coolers: Where It Grows, Why, and How to Prevent It
Why mold grows in and around evaporative coolers, the warning signs, a prevention routine, safe cleanup steps, and when EPA guidance says to call a pro.