Where Should I Install My Heat Pump?

Published on 03 March 2021

Category : Maintenance

Pools Heat Pumps: Where to place it? When to start it? At what time of day should I run it?

When should I switch on my heat pump? 

We advise you to start your heat pump from mid-April / early May if the weather conditions are in line with seasonal norms. It will also be very useful in the autumn to extend the swimming season until the first frosts! 

It should be noted that the efficiency of a heat pump starts to be interesting when the outside temperature is above 15°C. Below this temperature, the heat pump will spend a lot of time defrosting the system and it is not because the temperature is positive that the system does not frost. The colder the air, the more the heat pump system will frost. 

Where should I place my heat pump? 

The swimming pool heat pump is installed outdoors in a well-ventilated area to obtain the best possible performance. It is connected to the filter circuit after the filter, via a bypass, and before any treatment system. 

  • It is important to leave a well-ventilated space behind the heat pump (at least 50 cm) and not to enclose it.
  • It is important to leave a minimum space of 4 m in front of the fan grille
  • Avoid directing the fan discharge in the direction of a frequented space (terrace, solarium, etc.) as the air returned by the heat pump is cold and dry.
  • Avoid placing the heat pump more than 7 m from the pool to avoid heat dissipation between the pump and the pool (for confined spaces, there are vertical fan heat pumps).

At what time of day should I run my heat pump? 

At the beginning of the season, we advise you to leave your heat pump running 24 hours a day until the desired temperature is reached. Then let your heat pump run at the same time as the pool filtration, preferably on the day, as this is the hottest day for "pumping" the calories from the air. Once the water is at the desired temperature, the heat pump remains switched on, usually on standby, and only regulates, i.e. maintains the temperature lost during swimming and on cooler nights. 

To avoid heat and water loss through evaporation, cover your pool (bubble cover, shutter...) at night and on cooler days or in strong winds. The manufacturers' data for choosing a heat pump takes into account this night-time protection of the water body. 

Good to know about condensation

Do you have water at the foot of your heat pump? You may think your heat pump is leaking, but it is condensate, it is natural and unavoidable. If you have any doubts, analyse the water at the bottom of your heat pump. If there is no chlorine present, it is indeed the phenomenon of condensation. 


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