FAQs

Recotherm has been specialising in the design of air handling units specifically for indoor swimming pools for over 40 years. Unlike generic ventilation systems, Recotherm units are engineered to withstand the high humidity and corrosive atmosphere of pool environments while maintaining optimal swimming pool ventilation. In particular the control strategy used in our units has been developed over 40 years experience to ensure the best environment for the lowest running cost.

Recotherm systems feature advanced energy-saving technologies such as heat recovery, significantly reducing running costs compared to conventional systems. These units also ensure superior air quality by efficiently removing chloramines and unwanted smells while maintaining balanced humidity levels. This makes them particularly suitable for leisure centres which have shared spaces around the pool that need to be kept fresh and odour-free.  

No, this is a common misconception. Condensation forms when humid air comes into contact with surfaces colder than its dew point, rather than being solely dependent on air and water temperature differences. Swimming pool air handling units regulate humidity and temperature to maintain a stable environment, preventing condensation even when air temperature is below pool water temperature.

Recotherm’s indoor pool ventilation systems manage humidity levels effectively using precise energy control, ensuring that condensation does not form on windows, walls, or ceilings, protecting the structure of the building.

Yes, spa pools create significantly more moisture due to higher water temperatures and turbulence, increasing humidity levels. A swimming pool dehumidification system must be appropriately sized to handle this additional moisture load to prevent condensation and maintain a comfortable environment.

Recotherm’s indoor pool dehumidifiers can be designed to accommodate both swimming pools and spa pools, ensuring efficient humidity control and excellent air quality within leisure centres.

Not necessarily. While heat pump dehumidifiers can reduce humidity, they do not introduce fresh air, leading to stale environments and potential chlorine odours. Recotherm’s swimming pool air handling units prioritise fresh air intake to maintain optimal air quality, control humidity, and reduce long-term operational costs.

Yes, Recotherm units can be weatherproofed for outdoor installation at no extra cost. However, the control panel should be housed in a protected environment or placed indoors for easy access.

Yes, Recotherm’s swimming pool air handling units can monitor and adjust pool water temperature when fitted with the appropriate sensors and control valves, offering seamless integration with heating systems.

For most domestic installations, a single-phase supply is sufficient. Larger swimming pool air handling units for commercial applications usually require a three-phase supply due to increased capacity requirements.

Supply air should be directed over the coldest surfaces, typically windows, to prevent condensation. Swimming pool ventilation systems should avoid blowing air directly onto the pool water to minimise evaporation and energy loss.

Some smaller Recotherm units, such as those in the Aeris range, can operate on a standard 13-amp supply, making them suitable for domestic pools. Larger units may require a higher electrical capacity.

Yes, to maintain stable pool water and air temperatures, the boiler must be available at all times. However, Recotherm systems optimise energy efficiency by adjusting their operation based on real-time conditions.

It is highly recommended to distribute the air over cold surfaces, such as windows. However if this is not possible, the internal humidity can be adjusted as the external temp drops to ensure that the dew point of the air remains below the internal surface temperature of the glass.

Yes, the Aerum Recotherm unit is a boiler-free system that combines fresh air dehumidification with renewable heating technology. 

A pool cover will help to virtually eliminate evaporation from the surface of the pool water when the pool is not in use. Water costs money to heat and add to the pool, so anything that can be done to prevent water loss is advisable. There are certain pool shapes where it may be difficult to cover the surface of the water and neatly store the cover when it is off the pool. Careful consideration should be given to the pool design to try to ensure a pool cover can be incorporated. A pool without a cover will cost a lot more to run than one with a cover.

Yes, Recotherm units can be weatherproofed for outdoor installation at no extra cost. However, the control panel should be housed in a protected environment or placed indoors for easy access.

Yes, Recotherm’s swimming pool air handling units can monitor and adjust pool water temperature when fitted with the appropriate sensors and control valves, offering seamless integration with heating systems.

For most domestic installations, a single-phase supply is sufficient. Larger swimming pool air handling units for commercial applications usually require a three-phase supply due to increased capacity requirements.

Supply air should be directed over the coldest surfaces, typically windows, to prevent condensation. Swimming pool ventilation systems should avoid blowing air directly onto the pool water to minimise evaporation and energy loss.

Some smaller Recotherm units, such as those in the Aeris range, can operate on a standard 13-amp supply, making them suitable for domestic pools. Larger units may require a higher electrical capacity.

Yes, to maintain stable pool water and air temperatures, the boiler must be available at all times. However, Recotherm systems optimise energy efficiency by adjusting their operation based on real-time conditions.

It is highly recommended to distribute the air over cold surfaces, such as windows. However if this is not possible, the internal humidity can be adjusted as the external temp drops to ensure that the dew point of the air remains below the internal surface temperature of the glass.

A pool cover will help to virtually eliminate evaporation from the surface of the pool water when the pool is not in use. Water costs money to heat and add to the pool, so anything that can be done to prevent water loss is advisable. There are certain pool shapes where it may be difficult to cover the surface of the water and neatly store the cover when it is off the pool. Careful consideration should be given to the pool design to try to ensure a pool cover can be incorporated. A pool without a cover will cost a lot more to run than one with a cover.

Yes, because when a cover is on the pool, the pool hall is generally unoccupied. Maintaining the normal 30°C air temperature would be wasteful, so the air temperature in the pool hall can be lowered during unoccupied periods. As well as lowering the temperature, the fans can also operate at a lower speed therefore reducing energy consumption.

Yes, continuous operation is necessary to maintain effective indoor pool ventilation and prevent condensation-related damage. However, Recotherm units adjust their speed based on demand, reducing energy consumption during low-usage periods.

A heat pump dehumidifier operates by recirculating the air within the space, removing moisture through a direct expansion evaporator. The heat generated during this process is then used to warm the air and, in some cases, the pool water.

While this approach can reduce humidity, it has significant drawbacks. First, the dehumidification process relies heavily on electricity, which is expensive to operate. This can lead to higher energy costs, especially in comparison to systems that incorporate advanced energy-saving technologies like heat recovery.

Secondly, because a heat pump dehumidifier primarily recirculates the air within the pool hall, it does not address the removal of contaminants such as chloramines (produced by the interaction of chlorine with organic materials) or unpleasant body odour smells. This can result in a poor-quality atmosphere that is less enjoyable for pool users and potentially damaging to the building structure over time.

Recotherm’s swimming pool ventilation systems prioritise fresh air intake, minimising chloramines and odours while optimising energy efficiency with heat recovery technology.

Yes, spa pools generate more evaporation due to their higher water temperature and increased activity. A swimming pool air handling unit designed for spa environments ensures effective swimming pool dehumidification, preventing excess moisture buildup and maintaining optimal air quality.

Yes, when a pool cover is deployed, evaporation decreases significantly. Recotherm’s swimming pool air handling units can be programmed to adjust air temperature automatically, improving energy efficiency.

Yes, fitting a pool cover on a residential pool is highly advisable. It’s an excellent investment as it reduces the workload of the AHU and therefore energy costs. 

Yes, the display panel can be positioned away from the swimming pool air handling unit as long as it is sitting on the same network as the controller, ensuring easy access for monitoring and adjustments. This feature provides flexibility in system management, allowing controls to be installed in a convenient location.

Basic fans and heaters do not provide adequate swimming pool dehumidification and are not designed to withstand the corrosive effects of a swimming pool environment. Recotherm’s swimming pool air handling units feature advanced heat recovery technology, reducing energy consumption and operational costs.

Recotherm units are engineered for durability, with some systems still in operation after 30 years. A properly designed indoor pool ventilation system prevents condensation, protects the building, and maintains superior air quality, making it a cost-effective long-term investment.

An extractor fan alone is not sufficient for indoor pool dehumidifiers. While it removes air from the pool hall, it does not regulate humidity or introduce properly conditioned fresh air. Extractor fans can also lead to increased heating costs as they pull in cold outdoor air that must be reheated.

A swimming pool air handling unit provides a comprehensive solution by managing swimming pool dehumidification, ensuring proper air circulation, and utilising heat recovery to improve energy efficiency. Investing in a dehumidifier for swimming pools ensures long-term protection for the building and a comfortable environment for users.

Opening a window does not provide effective swimming pool dehumidification. Indoor pools generate high levels of moisture, and relying on open windows leads to inconsistent airflow, potential condensation, and increased heating costs. Cold outdoor air can cause temperature imbalances, making the environment uncomfortable and expensive to heat.

A purpose-built swimming pool air handling unit is designed to regulate humidity, temperature, and air quality efficiently. Unlike an open window, a swimming pool ventilation system removes excess moisture, prevents structural damage, and improves indoor air quality by eliminating chlorine by products.

A ventilation system is essential for managing humidity and maintaining air quality in an indoor pool environment. Water naturally evaporates from the pool surface, increasing humidity levels, which, if left unchecked, can lead to condensation, mould growth, and structural damage. A well-designed swimming pool air handling unit controls humidity, prevents moisture-related damage, and ensures a comfortable environment for pool users.

Recotherm swimming pool ventilation systems incorporate energy-efficient features like heat recovery technology to reduce operational costs. These indoor pool ventilation systems also improve air quality by removing chloramines and other airborne contaminants, ensuring a fresh and healthy atmosphere in the pool hall.

Recotherm has been specialising in the design of air handling units specifically for indoor swimming pools for over 40 years. Unlike generic ventilation systems, Recotherm units are engineered to withstand the high humidity and corrosive atmosphere of pool environments while maintaining optimal swimming pool ventilation. In particular the control strategy used in our units has been developed over 40 years experience to ensure the best environment for the lowest running cost.

Recotherm systems feature advanced energy-saving technologies such as heat recovery, significantly reducing running costs compared to conventional systems. These units also ensure superior air quality by efficiently removing chloramines and unwanted smells while maintaining balanced humidity levels. This makes them particularly suitable for leisure centres which have shared spaces around the pool that need to be kept fresh and odour-free.  

No, this is a common misconception. Condensation forms when humid air comes into contact with surfaces colder than its dew point, rather than being solely dependent on air and water temperature differences. Swimming pool air handling units regulate humidity and temperature to maintain a stable environment, preventing condensation even when air temperature is below pool water temperature.

Recotherm’s indoor pool ventilation systems manage humidity levels effectively using precise energy control, ensuring that condensation does not form on windows, walls, or ceilings, protecting the structure of the building.

Yes, spa pools create significantly more moisture due to higher water temperatures and turbulence, increasing humidity levels. A swimming pool dehumidification system must be appropriately sized to handle this additional moisture load to prevent condensation and maintain a comfortable environment.

Recotherm’s indoor pool dehumidifiers can be designed to accommodate both swimming pools and spa pools, ensuring efficient humidity control and excellent air quality within leisure centres.

Not necessarily. While heat pump dehumidifiers can reduce humidity, they do not introduce fresh air, leading to stale environments and potential chlorine odours. Recotherm’s swimming pool air handling units prioritise fresh air intake to maintain optimal air quality, control humidity, and reduce long-term operational costs.