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Air Source Heat Pumps (ASHP)

An air source heat pump is a revolutionary technology that has transformed the way we heat our hot tubs and swim spas. It’s an energy-efficient and cost-effective solution that uses the principles of thermodynamics to provide consistent and reliable heating.

Free Spawer O-Spa 5kW Air Source Heat Pump with every new tub purchased!

O-Spa 5kw ASHP

How Air Source Heat Pumps work

Air source heat pumps are innovative devices that extract heat from the outside air, even in cold weather, and use it to warm your hot tub water. They operate on a similar principle as refrigerators, but in reverse. Instead of cooling down an enclosed space, they extract warmth from the air and transfer it to your hot tub.

The process begins when the fan of the pump draws in outside air over an evaporator coil containing refrigerant fluid. This fluid absorbs heat from the air and evaporates into a gas. The gas is then compressed, which increases its temperature further. This high-temperature gas is passed through a heat exchanger where it transfers its heat to your hot tub water before it cools down and returns to its liquid state to start the process again.


1. Energy Efficiency: One of the main advantages of using an air source heat pump for your hot tub is its energy efficiency. These pumps can deliver up to three times more energy than they consume, making them significantly more efficient than traditional electric or gas heaters.

2. Cost-Effective: While the initial investment may be higher than conventional heaters, an air source heat pump can save you money in the long run due to lower operating costs.

3. Environmentally Friendly: As these pumps use renewable energy (air), they produce fewer carbon emissions compared to traditional heating methods.

4. Consistent Heating: Unlike solar heaters that depend on sunlight, air source heat pumps can provide consistent heating regardless of weather conditions or time of day.

air source heat pumps ranges



Spawer O-Spa 5kw

Ultra compact, the Spawer O-Spa 5kw is an air source heat pump for spas that can save you up 75% in energy consumption when heating your spa compared to a conventional electric heater (at an equivalent power consumption). The O-Spa can be installed on any type of hot tub and nordic bath in order to take over the electric heater and optimise the increase in temperature inside your spa.


Arctic Action 7kw

The Arctic Action is an air source heat pump for spas especially conceived for the most extreme climate. in  Operating down to -20°C, you can heat up your spa right in the middle of snow peaks and enjoy the view in complete peace. Its Full Inverter technology will reduce your energy consumption up to 80% for an average COP of 5, at an equivalent power consumption compared to an electric heater!


Mr. Silence MS90

Enjoy the peace and quiet with Mr Silence MS90 air source heat pump. Thanks to the patented airstream design technology, the sound level of Mr Silence is as low as a fridge. At the beginning of the spa season, Mr Silence will run at full speed to heat up the spa rapidly. Once the temperature is getting close to set point, Mr Silence automatically adjusts to a lower speed, offering a more efficient and quieter operation. The COP at low speed is up to 16.


Vertigo Fi 95

As a latest generation air source heat pump, the Vertigo Fi 95 aims to be efficient, economical and silent. The Vertigo Fi 95  air source heat pump regroups all of today’s technologies. It incorporates Full Inverter technology with a multi-frequency compressor and variable-speed fan that considerably reduce power consumption and sound pressure levels.

Come and try our tubs & spas

Come and try our tubs & spas