EnergyGuard Selective Transmission™ GeoBubble Cover

EnergyGuard Selective Transmission™ GeoBubble Cover

EnergyGuard™ Selective Transmission. Dual purpose cover for natural heating & algae management

The EnergyGuard GeoBubble cover using GeoBubble material is one of the most innovative thermal pool covers to date. Designed to inhibit light entry into the pool which makes it difficult for algae to survive, it reduces the amount of filtration required, reducing power consumption by up to 50%, as well as heating the water naturally.

Given the ongoing power crisis in South Africa and the need to adopt power saving habits, this energy-saving pool cover is the cover of choice for pool owners looking to save power and also save money by adopting an eco-smart product.

The cover can also be semi-automated with the PP Automated GeoRoller.


Heat generation and heat retention

EnergyGuard’s GeoBubble technology absorbs the sun’s heat and transfers it to the water, generating free energy and raising temperatures by up to 7º C. Because the water is not exposed to cool air, energy is no longer lost in the evaporation process – one of the main causes of heat loss. On heated pools, EnergyGuard allows for lower settings on heat pumps. Solar heating is more effective too. The swimming season can be extended by 6 to 8 weeks.


Reduce algae growth and debris

The EnergyGuard Selective Transmission cover uses light filtration technology to absorb the wavelengths that promote the growth of algae. The cover also prevents debris from collecting in the water which greatly improves water aesthetics and hygiene.

Reduce filtration/pump time

Filtration is still required for aeration and eradicating minor impurities but pump time can be halved which makes for considerable power savings. In an average domestic pool, the pool pump consumes 12% of the household’s electricity. The EnergyGuard reduces this by 50%.

Prevent evaporation – save water

In local conditions, an average pool (8m x 4m) can lose up to 38 400 litres of water annually if left uncovered. By working as a barrier over the water’s surface, the EnergyGuard GeoBubble cover eliminates water loss and the 98% reduction in evaporation means considerable water savings.

Save money

In an average household, 12% of the electricity bill can be attributed to the pool pump. By using less energy, less chemicals and less water, the EnergyGuard GeoBubble has a payback period of approximately 18 months.


  • The EnergyGuard GeoBubble material absorbs the wavelengths that ordinarily promote algae’s photosynthesis, instead, converting these wavelengths into heat through conduction. The cover also directly transmits other wavelengths into the pool water where they heat the water directly. This means that all available wavelengths of solar energy are efficiently harnessed and utilised to heat the pool while keeping the pool algae free at the same time.
  • Made from durable 500 micron GeoBubble material. The improved GeoBubble shape is scientifically designed to prevent the premature degradation around bubble corners, increasing longevity by 25%, resulting in a  sustainable, 100% recyclable, energy-saving and cost-efficient product.
  • The non-toxic additives used combine chemical and weather-resistant pigments with high-performance light, weather and chemical stabilization.


The EnergyGuard GeoBubble has a dark blue surface with a black underside.


The EnergyGuard GeoBubble is expected to last 6 years and carries a reducing warranty of 3 years. Please refer to our ‘How to care for your cover’ brochure to ensure this lifespan.

Please note that the GeoBubble range of covers are not child safety covers. 


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