Advice · 4 min read
Do pool covers really reduce running costs?
Short answer: usually yes. Long answer: it depends how many hours it stays on.
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Written by Belinda
- Last updated:
The short answer
A cover reduces evaporation, which is typically the largest source of heat loss from an outdoor pool. The saving depends on how many hours a day it is on, plus wind, humidity and cover type.
In this guide
Why evaporation matters so much
Every litre that evaporates carries a lot of energy away with it. Wind and low humidity speed this up. A cover physically stops most of it while in place.
Types of cover
| Type | Best for | Trade-off |
|---|---|---|
| Solar bubble | Daytime solar gain plus evaporation control | Less insulation at night |
| Thermal blanket | Holding heat overnight | Less solar gain |
| Automatic | Convenience, so it gets used | Higher cost, design work |
The habit is the product
A cover that is hard to roll back ends up in the shed. A suitable roller, storage location and routine matter as much as the material.
In the sizing tool, change cover hours and type to see how the monthly estimate moves for your pool.
Keep reading
General guidance from The Pool Heating Chick. It is not a substitute for advice about your specific site.
