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Product description

The Poolex Nano 5.5 is a compact heat pump with automatic defrost designed to effortlessly maintain your ideal water temperature. This versatile Plug & Play heat pump is compatible with all small above ground pools up to 30m³. Measuring under 40cm in height and operating at a whisper-quiet level (under 30dB), it fits discreetly into small gardens or on patios. For ultimate convenience, integrated Wi-Fi allows you to adjust modes and monitor performance remotely via the Poolex app.

Not sure what size heat pump you need?
Use our sizing guide or request a free quote

Key features

Ultra compact design for small pools and limited spaces

Quiet and economical

Maximum COP of 5.4 (A26/W26)

Automatic defrost

Built-in Wi-Fi 2.4GHz (Requires Poolex App)

Heating / Cooling / Automatic modes

Suitable for 32mm/38mm hoses

Heating range from 15-40°C

Works down to -7°C, suitable for extended season use (determined by pool size)

R32 Refrigerant

High quality GMCC compressors

Twisted Tech Titanium heat exchanger, chlorine and salt resistant

Warranty 2 years, Compressor 5 years (parts only after year 2) and Titanium coil (against chemical corrosion, except for frost damage) 15 years (parts only after year 2)

Supplied with two hose connectors & clamps and 4 anti-vibration pads

Downloads

Product specifications

Max. Heating Capacity A26/W26
5.0kW
Power Input A26/W26
0.93kW
COP A26/W26
5.4
Max. Heating Capacity A15/W26
3.36kW
Power Input A15/W26
0.81kW
COP A15/W26
4.16
Max. Power Input
1.75kW
Voltage
230V
Refrigerant
R32
Noise Level (10m)
<30dba
Fan Direction
Horizontal
Water Connections
32mm
Dimensions (L x W x H)
440mm x 400mm x 390mm
Weight
32Kg
Nominal flow
1.4m³/h
Wi-Fi Connectivity
2.4GHz only (Requires Poolex App)

What is COP?

COP stands for Coefficient of Performance

COP is quoted as a number, such as 5.4

For each kW of energy input, 5.4 x kW would be output

The higher the output, the lower the running costs

Installation

Heat loss

If you are thinking of heating your pool you should cover the pool when not in use as 80% of heat loss occurs through surface evaporation, a separate solar or bubble cover is a worthwhile investment if you don’t have an existing cover.

With an above ground pool it is especially important to keep it covered as these pools are not well insulated against heat loss – additional insulation around the sides and bottom of an above-ground pool can help to retain valuable heat – in fact properly insulating your pool can extend your season or even reduce the size of heat pump required.

The 3.5 and 5.5 models come fitted with a mains cable as standard, making them suitable for RCD protected outdoor sockets, this cable can be removed and the unit can be hardwired if required.

Water inlet and outlet connections are 32mm, the unit comes supplied with PVC hose connectors that are suitable for 32/38mm hoses.

If the flow rate through your heat pump is too high it can take longer to heat your pool or you may struggle to achieve your desired temperature, our bypass kit for above ground pools optimises the flow rate to maximise the heat transfer to your pool water. A bypass kit also allows the circulation and filtering of pool water without heating and for winterising your heat pump.

Your Nano swimming pool heat pump should always be installed outside, the metal case provides necessary protection from the weather.

The manufacturer literature may state that the heat pump should be positioned above the waterline, the assumption being that pools are in-ground, therefore the heat pump would sit at ground level.

If you have an above-ground pool please position your heat pump at ground level (therefore below the waterline), there is no need to elevate the heat pump.

Product Description

The Poolex Nano 5.5 is a compact heat pump with automatic defrost designed to effortlessly maintain your ideal water temperature. This versatile Plug & Play heat pump is compatible with all small above ground pools up to 30m³. Measuring under 40cm in height and operating at a whisper-quiet level (under 30dB), it fits discreetly into small gardens or on patios. For ultimate convenience, integrated Wi-Fi allows you to adjust modes and monitor performance remotely via the Poolex app.

We Are Rated Excellent on TrustPilot

Poolex Nano 5.5 Ultra Compact Heat Pump with Wi-Fi for Swimming Pools

Product description

The Poolex Nano 5.5 is a compact heat pump with automatic defrost designed to effortlessly maintain your ideal water temperature. This versatile Plug & Play heat pump is compatible with all small above ground pools up to 30m³. Measuring under 40cm in height and operating at a whisper-quiet level (under 30dB), it fits discreetly into small gardens or on patios. For ultimate convenience, integrated Wi-Fi allows you to adjust modes and monitor performance remotely via the Poolex app.

Not sure what size heat pump you need?
Use our sizing guide or request a free quote

Key features

Ultra compact design for small pools and limited spaces

Quiet and economical

Maximum COP of 5.4 (A26/W26)

Automatic defrost

Built-in Wi-Fi 2.4GHz (Requires Poolex App)

Heating / Cooling / Automatic modes

Suitable for 32mm/38mm hoses

Heating range from 15-40°C

Works down to -7°C, suitable for extended season use (determined by pool size)

R32 Refrigerant

High quality GMCC compressors

Twisted Tech Titanium heat exchanger, chlorine and salt resistant

Warranty 2 years, Compressor 5 years (parts only after year 2) and Titanium coil (against chemical corrosion, except for frost damage) 15 years (parts only after year 2)

Supplied with two hose connectors & clamps and 4 anti-vibration pads

Downloads

Product specifications

Max. Heating Capacity A26/W26
5.0kW
Power Input A26/W26
0.93kW
COP A26/W26
5.4
Max. Heating Capacity A15/W26
3.36kW
Power Input A15/W26
0.81kW
COP A15/W26
4.16
Max. Power Input
1.75kW
Voltage
230V
Refrigerant
R32
Noise Level (10m)
<30dba
Fan Direction
Horizontal
Water Connections
32mm
Dimensions (L x W x H)
440mm x 400mm x 390mm
Weight
32Kg
Nominal flow
1.4m³/h
Wi-Fi Connectivity
2.4GHz only (Requires Poolex App)

What is COP?

COP stands for Coefficient of Performance

COP is quoted as a number, such as 5.4

For each kW of energy input, 5.4 x kW would be output

The higher the output, the lower the running costs

Installation

Heat loss

If you are thinking of heating your pool you should cover the pool when not in use as 80% of heat loss occurs through surface evaporation, a separate solar or bubble cover is a worthwhile investment if you don’t have an existing cover.

With an above ground pool it is especially important to keep it covered as these pools are not well insulated against heat loss – additional insulation around the sides and bottom of an above-ground pool can help to retain valuable heat – in fact properly insulating your pool can extend your season or even reduce the size of heat pump required.

The 3.5 and 5.5 models come fitted with a mains cable as standard, making them suitable for RCD protected outdoor sockets, this cable can be removed and the unit can be hardwired if required.

Water inlet and outlet connections are 32mm, the unit comes supplied with PVC hose connectors that are suitable for 32/38mm hoses.

If the flow rate through your heat pump is too high it can take longer to heat your pool or you may struggle to achieve your desired temperature, our bypass kit for above ground pools optimises the flow rate to maximise the heat transfer to your pool water. A bypass kit also allows the circulation and filtering of pool water without heating and for winterising your heat pump.

Your Nano swimming pool heat pump should always be installed outside, the metal case provides necessary protection from the weather.

The manufacturer literature may state that the heat pump should be positioned above the waterline, the assumption being that pools are in-ground, therefore the heat pump would sit at ground level.

If you have an above-ground pool please position your heat pump at ground level (therefore below the waterline), there is no need to elevate the heat pump.

Poolex Nano 5.5 Ultra Compact Heat Pump with Wi-Fi for Swimming Pools

We Are Rated Excellent on TrustPilot

Poolex Nano 5.5 Ultra Compact Heat Pump with Wi-Fi for Swimming Pools

POA

Payment methods

Payment methods we accept

This product is available to trade customers.

For more information on the full Poolstar pool, spa and wellness range or to speak to us about becoming a stockist please call 01284 658770 or email our sales team.

We are proud to be the official UK & Ireland Poolstar distribution partner.

Download the Poolstar 2025-2026 Catalogue - pdf (73Mb)

Sales and technical help

Our sales team is more than happy to advise with product selection, trade enquiries and provide technical advice.

While our servicing team is on hand to help with servicing and after sales.

01284 658770

Mon to Fri 9am to 5pm /out-of-hours voicemail

Product code: 117823 Categories: , , Tag:

Product description

The Poolex Nano 5.5 is a compact heat pump with automatic defrost designed to effortlessly maintain your ideal water temperature. This versatile Plug & Play heat pump is compatible with all small above ground pools up to 30m³. Measuring under 40cm in height and operating at a whisper-quiet level (under 30dB), it fits discreetly into small gardens or on patios. For ultimate convenience, integrated Wi-Fi allows you to adjust modes and monitor performance remotely via the Poolex app.

Not sure what size heat pump you need?
Use our sizing guide or request a free quote

Key features

Ultra compact design for small pools and limited spaces

Quiet and economical

Maximum COP of 5.4 (A26/W26)

Automatic defrost

Built-in Wi-Fi 2.4GHz (Requires Poolex App)

Heating / Cooling / Automatic modes

Suitable for 32mm/38mm hoses

Heating range from 15-40°C

Works down to -7°C, suitable for extended season use (determined by pool size)

R32 Refrigerant

High quality GMCC compressors

Twisted Tech Titanium heat exchanger, chlorine and salt resistant

Warranty 2 years, Compressor 5 years (parts only after year 2) and Titanium coil (against chemical corrosion, except for frost damage) 15 years (parts only after year 2)

Supplied with two hose connectors & clamps and 4 anti-vibration pads

Downloads

Product specifications

Max. Heating Capacity A26/W26
5.0kW
Power Input A26/W26
0.93kW
COP A26/W26
5.4
Max. Heating Capacity A15/W26
3.36kW
Power Input A15/W26
0.81kW
COP A15/W26
4.16
Max. Power Input
1.75kW
Voltage
230V
Refrigerant
R32
Noise Level (10m)
<30dba
Fan Direction
Horizontal
Water Connections
32mm
Dimensions (L x W x H)
440mm x 400mm x 390mm
Weight
32Kg
Nominal flow
1.4m³/h
Wi-Fi Connectivity
2.4GHz only (Requires Poolex App)

What is COP?

COP stands for Coefficient of Performance

COP is quoted as a number, such as 5.4

For each kW of energy input, 5.4 x kW would be output

The higher the output, the lower the running costs

Installation

Heat loss

If you are thinking of heating your pool you should cover the pool when not in use as 80% of heat loss occurs through surface evaporation, a separate solar or bubble cover is a worthwhile investment if you don’t have an existing cover.

With an above ground pool it is especially important to keep it covered as these pools are not well insulated against heat loss – additional insulation around the sides and bottom of an above-ground pool can help to retain valuable heat – in fact properly insulating your pool can extend your season or even reduce the size of heat pump required.

The 3.5 and 5.5 models come fitted with a mains cable as standard, making them suitable for RCD protected outdoor sockets, this cable can be removed and the unit can be hardwired if required.

Water inlet and outlet connections are 32mm, the unit comes supplied with PVC hose connectors that are suitable for 32/38mm hoses.

If the flow rate through your heat pump is too high it can take longer to heat your pool or you may struggle to achieve your desired temperature, our bypass kit for above ground pools optimises the flow rate to maximise the heat transfer to your pool water. A bypass kit also allows the circulation and filtering of pool water without heating and for winterising your heat pump.

Your Nano swimming pool heat pump should always be installed outside, the metal case provides necessary protection from the weather.

The manufacturer literature may state that the heat pump should be positioned above the waterline, the assumption being that pools are in-ground, therefore the heat pump would sit at ground level.

If you have an above-ground pool please position your heat pump at ground level (therefore below the waterline), there is no need to elevate the heat pump.

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