The Vent-Air system heats fresh air coming in to the enclosure. The warm air expands and reduces the moisture content in the enclosure. Each Vent-Air indoor pool ventilation system is custom designed to provide the right amount of fresh, heated air to effectively control the indoor pool moisture. It does this at a fraction of energy consumption in comparison with other products available.

Each Vent-Air System features Air Handling Units that supply fresh heated air into the enclosure using either infloor ventilation or overhead ducts to evenly distribute the freshly heated air. The same amount of stale humid indoor air is exhausted at the same time by the Return Fan Coil Air Handling Units. This minimises condensation, controls the humidity level, reduces odours and creates a pleasant environment for pool users by continuously replacing stale and humid indoor air with fresh heated outdoor air.

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The heat pump most suited to each situation is determined by a number of factors. When combining the heating for a underfloor heating and domestic hot water, sizing priority is given to the underfloor as it has the greatest load requirement. These factors include; floor area, insulation, building structure and climate. For more information about heat pump sizing please contact Hot Water Heat Pumps. As a general guide to heat pump requirements:

• Underfloor area of up to 310m² (providing 50 Watts/m²) for Northland, Auckland, and Coastal Bay of Plenty.
• Underfloor area of up to 238m² (providing 65 Watts/m²) for Hamilton, Gisborne, Taranaki, Coastal Hawkes Bay and Wellington.
• Underfloor area of up to 182m² (providing 85 Watts/m²) for the Central Plateau and South Island.

• Underfloor area of up to 358m² (providing 50 Watts/m²) for Northland, Auckland, and Coastal Bay of Plenty.
• Underfloor area of up to 275m² (providing 65 Watts/m²) for Hamilton, Gisborne, Taranaki, Coastal Hawkes Bay and Wellington.
• Underfloor area of up to 211m² (providing 85 Watts/m²) for the Central Plateau and South Island.

• Underfloor area of up to 474m² (providing 50 Watts/m²) for Northland, Auckland, and Coastal Bay of Plenty.
• Underfloor area of up to 365m² (providing 65 Watts/m²) for Hamilton, Gisborne, Taranaki, Coastal Hawkes Bay and Wellington.
• Underfloor area of up to 279m² (providing 85 Watts/m²) for the Central Plateau and South Island.

• Underfloor and domestic hot water

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All of Hot Water Heat Pumps' models carry a comprehensive two year parts and labour warranty, including the compressor, evaporator coils, heat exchanger and refrigeration systems. The titanium tube within the heat exchanger is covered against corrosion for 30 years for residential use and 10 years for commercial use.

These heat pump water heaters are fitted with protection systems to prevent damage in the event of a malfunction. Such as a flow switch to ensure the heat pump cannot operate without water flow and other refrigeration safeties. If a problem is identified, the unit automatically shuts down before damage can occur.

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The heat pump most suited to each situation is determined by a number of factors. When combining the heating for a swimming pool and domestic hot water, sizing priority is given to the pool as it has the greatest load requirement. These factors include things such as; surface area of the pool, whether the pool has a cover and the time it is covered, and local temperature and weather conditions.

For more information about heat pump sizing please contact Hot Water Heat Pumps. As a general guide to heat pump requirements for an extended season of swimming from mid October to mid April as listed:

• Residential Pool (up to 4 hours per day uncovered) with a surface area up to 65m² for most of the North Island, up to 60m² for the Central North Island and South Island.
• School Pool (up to 6 hours per day uncovered) with a surface area up to 48m² for most of the North Island, up to 43m² for the Central North Island and South Island.
• Commercial Pool (up to 12 hours per day uncovered) with a surface area of up to 38m² for most of the North Island, up to 22m² for the Central North Island and South Island.

• Residential Pool (up to 4 hours per day uncovered) with a surface area up to 65m² for most of the North Island, up to 60m² for the Central North Island and South Island.
• School Pool (up to 6 hours per day uncovered) with a surface area up to 48m² for most of the North Island, up to 43m² for the Central North Island and South Island.
• Commercial Pool (up to 12 hours per day uncovered) with a surface area of up to 38m² for most of the North Island, up to 22m² for the Central North Island and South Island.

• Residential Pool (up to 4 hours per day uncovered) with a surface area up to 65m²for most of the North Island, up to 60m² for the Central North Island and South Island.
• School Pool (up to 6 hours per day uncovered) with a surface area up to 48m² for most of the North Island, up to 43m² for the Central North Island and South Island.
• Commercial Pool (up to 12 hours per day uncovered) with a surface area of up to 38m² for most of the North Island, up to 22m² for the Central North Island and South Island.

• Swimming or spa pool.
• Swimming pool and domestic hot water.

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All heat pump models carry a comprehensive two year parts and labour warranty, including the compressor, evaporator coils, heat exchanger and refrigeration systems. The titanium tube within the heat exchanger is covered against corrosion for 30 years for residential use and 10 years for commercial use.

Heat pump water heaters are fitted with protection systems to prevent damage in the event of a malfunction. Such as a flow switch to ensure the heat pump cannot operate without water flow and other refrigeration safeties. If a problem is identified, the unit automatically shuts down before damage can occur.

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