The Poolex Spawer O'Spa 7 kW + Cooling Function is the most powerful model within the O'Spa series and has been specially developed for the efficient heating and cooling of spas, hot tubs, and Nordic baths. With a heating capacity of up to 7.10 kW, this model offers significantly more power and reserve than the 3 kW and 5 kW models.

The O'Spa uses energy from the outside air to bring the spa water to temperature. This allows heating to be significantly more energy-efficient than using a conventional electric spa heater alone. In addition, this model features a full-fledged Chiller function, which allows the water to be actively cooled.

A key feature of this model, with reference PC-OSPA75P, is the integrated circulation pump. This makes the heat pump particularly suitable for an independent external heat pump circuit for a spa.

Powerful 7 kW model

The O'Spa 7 kW is designed for situations where extra heating capacity is desired. Examples include a larger spa, a less well-insulated hot tub, use during cooler periods, or when you want to bring the water up to temperature faster.

Under favorable test conditions of 26°C outside air, 26°C water, and 80% relative humidity, this model delivers:

Heating capacity: 7.10 kW
Power consumption: 1.28 kW
COP: 5.55

A COP of 5.55 means that under these conditions, the heat pump can deliver approximately 5.55 kW of heat per 1 kW of electrical compressor energy consumed.

Also powerful at high spa temperatures

For a spa, performance at a water temperature of 38°C is much more relevant than performance at 26°C.

At 15°C outside air, 38°C water, and 70% relative humidity, the 7 kW O'Spa still delivers:

Heating capacity: 4.65 kW
Power consumption: 1.37 kW
COP: 3.40

This is a major advantage of the 7 kW model. A considerable amount of heating capacity remains available even at a high desired spa temperature.

Save up to 75% energy

A traditional electric spa heater produces heat directly from electricity. A heat pump, on the other hand, extracts a large portion of its energy from the ambient air.

According to Poolex, this allows the O'Spa to save up to 75% energy when heating a spa compared to a conventional electric heater for the same amount of heat delivered.

The actual savings depend on, among other factors, the outside temperature, desired water temperature, insulation, duration of use, and the use of a good thermal cover.

Heating up to 40°C

The O'Spa has been specifically developed for spas and can therefore handle much higher water temperatures than are necessary for a standard swimming pool.

The adjustable heating range is:

10°C to 40°C

This allows the heat pump to be used to bring the water to a comfortable spa temperature and subsequently maintain this temperature as efficiently as possible.

A well-insulating spa cover is highly recommended for the lowest possible energy consumption.

Active Chiller function

The O'Spa 7 kW can not only add heat to the water, but also actively remove heat from it.

The adjustable cooling range is approximately:

2°C to 30°C

This allows the same spa to be used as a cooling bath during hot summer days.

The actual minimum attainable water temperature remains dependent on the outside temperature, insulation, volume of the spa, and heat that is added back to the water from the environment.

Up to 3.90 kW cooling capacity

The 7 kW model is also the most powerful version in this series for cooling.

At an outside temperature of 35°C and a water temperature of 27°C, it delivers approximately:

Cooling capacity: 3.90 kW
Power consumption: 1.66 kW
EER: 2.35

At 15°C outside air and 5°C water temperature, the cooling capacity is still approximately:

Cooling capacity: 2.90 kW
Power consumption: 1.00 kW
EER: 2.90

This makes the O'Spa interesting not only as an energy-efficient heater, but also for those who want to be able to actively cool their spa.

Heating, cooling, and automatic control

The O'Spa has several operating functions:

Heating: for heating the spa water.

Chiller: for actively cooling the water.

Auto: automatic temperature control around the set value.

This allows you to use the same system throughout different seasons.

Can work with the existing spa heater

The O'Spa Flow has a function for relay control of the existing spa heater.

This allows the heat pump, in a suitable installation, to work together with the spa's existing electric heater.

The heat pump can handle efficient base heating, while the electric heater remains available when additional heating capacity is needed.

The electrical integration must always be carried out according to the installation instructions, especially when the spa uses a specific control system such as Balboa.

Titanium heat exchanger

The heat pump features a Twisted Tech™ titanium heat exchanger.

Titanium is excellently suited for swimming pool and spa water due to its high corrosion resistance.

The heat exchanger ensures that energy from the cooling circuit is efficiently transferred to the spa water.

R32 refrigerant

The O'Spa 7 kW uses R32 refrigerant.

The refrigerant content is approximately 0.45 kg.

The refrigerant is contained in a closed cooling circuit. Work on this circuit must be carried out by a qualified professional.

32/38 mm water connections

The hydraulic connections of the O'Spa are designed for 32 and 38 mm.

This allows the heat pump to be easily integrated into many compact spa installations.

If the spa has 50 mm PVC pipes, for example, suitable adapters can be used to connect to 38 mm.

When designing the circuit, consider the required flow rate of approximately 3 m³/h and limit unnecessarily long pipes, sharp bends, and other components that cause high resistance.

Compact despite high power

Despite the heating capacity of up to 7.10 kW, the O'Spa remains relatively compact.

The dimensions are approximately:

Length: 620 mm
Width: 490 mm
Height: 430 mm

The net weight is approximately 47 kg.

This allows the heat pump to be installed relatively close to a spa, provided there is enough free space around it for air intake and exhaust.

Noise level

At maximum power, the 7 kW model produces, according to the manufacturer:

Noise level at 1 meter: less than 55 dB(A)
Noise level at 10 meters: less than 35 dB(A)

Proper placement is important. Preferably place the heat pump on a stable surface and, where possible, avoid having the sound reflected directly back toward the spa by hard walls.

Suitable for 230V

Despite the high heating capacity, the O'Spa 7 kW operates on a standard single-phase mains voltage:

220-240V / 50Hz / 1-phase

The maximum electrical power consumption is approximately 2.55 kW.

The electrical group, cabling, and safety devices must of course be suitable for the device and for installation in a spa/outdoor environment.

When to choose the 7 kW O'Spa?

The 7 kW model is particularly interesting when you want maximum power reserve. For a larger spa or hot tub, the extra power can ensure that the water reaches temperature faster.

The extra power is also attractive for use during cooler periods. At 15°C outside air and 38°C water, the 7 kW model, for example, still delivers approximately 4.65 kW of heating capacity, compared to about 3.25 kW for the 5 kW model and 2.11 kW for the 3 kW model.

For a small, well-insulated spa, 3 or 5 kW may be sufficient. The 7 kW model is mainly intended for those who want to heat faster, have a larger water volume, or desire more reserve.

Maximum capacity for your spa

The Poolex Spawer O'Spa Spa Heat Pump 7 kW + Cooling Function is especially interesting for those who want to get maximum capacity out of a compact spa heat pump. With 7.10 kW heating capacity, a COP of up to 5.55, integrated circulation pump, titanium heat exchanger, and powerful Chiller function, this model is built for intensive use throughout different seasons.

While the smaller models are mainly interesting for compact spas, the 7 kW O'Spa offers extra reserve for larger water volumes, faster heating, and use at lower outside temperatures. At the same time, it can actively cool the water, allowing the same spa to be used as both a warm wellness spa and a cooling bath.