Pooled Energy monitors water chemistry at the output of the filter continually, every 2 minutes when the filter is running. When the system is not filtering, you may see the pump start occasionally and run for a short period. It does this to take a sample of water to check your pool and also to better stir and mix sanitiser around the pool. Generally, such a short run is at very low power and uses little electricity.
In summer, we often set a short filter and pool sweep run about 1 p.m. This is in the shoulder tariff period for those on time-of-use power and this short run skims, stirs and chlorinates the
water enough to give visible improvement and a worthwhile addition to quality at a modest cost.