energy efficient pool pumps
If buying a new pool pump, choose a variable speed one, with automatic control systems. Multi-speed pumps allow a more flexible use, making them the most energy-efficient pumps in the market. They can be associated to timers in order to replace continuous filtration with several short cycles (keeping the pool clean all day with less power).
Choosing an energy efficient pool pump
Pool pumps are not rated with the Energy Star label, or other equivalent rating. So, you should look instead for the horsepower (HP) and motor efficiency, if available.
Big is not the best
When buying an energy-efficient pool pump do not oversize. Residential pump pools are often oversized, but it doesn't make them more effective.
Reducing the size of a pump will lead to a proportional reduction in energy consumed. For example: compared to a 0,75 HP pump, a 1 HP will increase power consumption by about 25% (a 0,75 HP pump is often more than sufficient to fulfill the needs of an average residential pool).
Keep in mind: the larger the swimming pool pump, the greater the power consumption and maintenance costs. You should use the smallest size pool pump possible.
Choosing the right size pool pump
Swimming pools are different in their shape and size; and that and the surrounding landscape and circumstances such as climate or usage affect water circulation and the right size for the pump.
But there are some general rules you should pay attention to when using the pump or when buying and sizing a new one. And in this particular case, the easiest way to get the size is to consult swimming pool design charts. Suppliers and pool dealers have charts matching the characteristics of the pump to the pool’s flow and piping.
Solar pool heating system
Solar pool heating systems do not demand special pumps. But if you intend a solar pool system you should also consider the impact of the pumping of the water to the collectors and back from them. Solar panels installed on the roof of a two-story home can demand more horsepower.
Studies show that a 0.75 horsepower pump is sufficient for average residential pools with solar heating systems. But that's just a broad reference.
Things that you can do to get a smaller and more energy efficient pool pump.
As said above, to get the greatest energy savings you should use the smallest pool pump possible. But to achieve it you may have to decrease the hydraulic resistance of the circulation system.
To get it consider to use a larger filter (50% higher than the design flow rate of the pool, or more); and also the redesigning the pipe system: flexible pipes, larger pipes, 45º elbow pipes, large diameter pipes… combined with larger filters can reduce the electricity consumption up to 30-40%.
Reducing filtration time
To get energy savings in your pool, pay attention to filtration times. Three to six hours of filtration is enough in most cases and climates.
Longer circulation doesn’t mean a better cleaning and doesn’t necessarily reduce the growth of algae. Chemicals and scrubbing the pool walls are the best methods to reduce algae growth, while using a skimmer or vacuum can replace some daily hours of filtration.
The most energy efficient pool pump will not provide large energy savings without a proper use of the pump...
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