Every litre of water that evaporates, takes with it theheat energy used to warm it, making the heatingsystem work harder to maintain the desired temperature. A good-quality poolcover can cut evaporation by around 90–95%, preventing unnecessary energy lossand conservation of water.
Beyond heat retention, using a cover reduces dehumidification and running costs. With an uncovered pool the evaporation increasesindoor humidity, therefore when comparing a covered pool, this would consumeless electricity. A cover reduces themoisture volume in the air, meaning less demandon ventilation/heat recovery equipment and decreasingenergy bills. Additionally, by decreasing evaporation, pool covers help chemicalslike chlorine last longer, leading to lesschemical usage and costs.
Airstream Technologies AS range of units have a pool coveredmode integrated into our control strategy, this means if you have an automaticcover (or switch for manual cover) installed the unit will automatically rampdown to maintain a reduced air temperature. When the pool is uncovered the poolventilation unit will increase back to the desired pool hall air temperature tocompensate the humidity.
Return on investment example (Residential ASR 1000 V with a good quality pool cover)
Pool surface area - 98m²
Pool water temperature - 29°C
Pool hall air temperature - 30°C
Building construction - Latest building regulations
LPHW coil served by a gas boiler with the latest Ofgem energyprice caps applied (1st July 2025 – 30th September 2025)
Gas – 6.33p per KWh
Electricity – 25.73 per KWh
Typical 1 hour usage per day.
Cost savings per annum (approximately) £3,500.00
Manual cover (£400-£1,000) – worse case payback period 3 ½months.
Automatic cover (£6,500-£12,000.00) – worse case payback period3.5 years .
Automatic/slatted pool covers have an estimated life span of 10+years of life with proper care/maintenance.
Airstream Technologies AS range of units have a pool coveredmode integrated into our control strategy, this means if you have an automaticcover (or switch) installed the unit will automatically ramp down to maintain areduced air temperature.
Covering a pool when it’s not in use is a simple step thatdelivers long-term savings while increasing equipment longevity.
Do you want the team to calculate your return on investment when using a good quality pool cover? Please email info@airstreamtech.co.uk
Airstream Technologies is pleased to announce that the full range of our Pool Ventilation Units, including both the Airstream — R (Residential) and Airstream — C (Commercial) models, are UKCA marked.
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