Sizing against losses, not just volume
Pool heating is a battle against surface heat loss. Surface area, wind exposure, whether a cover is used and the target temperature matter as much as volume. A Big Bay pool exposed to south-easters loses far more heat than a sheltered Constantia pool of the same size.
Flow and bypass
The unit is plumbed into the filtration circuit with a three-valve bypass so flow through the exchanger can be regulated and the unit isolated for service. Too little flow triggers lockouts; too much wastes pump energy.
Realistic expectations
A correctly sized pool heat pump raises temperature gradually over days, not hours, and holds it. A pool cover typically does more for retained temperature than any equipment upgrade.
If you want this assessed on your own property, call 069 268 0988. We inspect, explain what we find, and quote in writing.