Thermotec Penguin Reversible 5kw UK Plug and Play Pool Heat Pump for Above Ground Pools up to 12m3

£875.00 (£729.17 exc VAT)

Availability: Out of stock


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Thermotec Penguin Reversible 5kw UK Plug and Play Pool Heat Pump

Update Sept 2023 – The Penguin 5kw are now out of stock, please look at the Penguin 4kw or Thermotec Mini 5kw as an alternative.

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1. Description

The  Thermotec Penguin Reversible is a 5kw mini heat pump designed specifically for above ground pools which will give you extended season use so you can use it from April to October each year.

The built in defrost function allows it to work in air temperatures as low as -5c ! (but note that the output of all heat pumps reduces as the air temperature falls)

The Thermotec Penguin is the World’s Cutest, portable Plug and Play Heat Pump, your children will love it !

Slash the cost of heating your pool using the Thermotec Penguin Reversible heat pump rather than an electric heater.

Outputs an incredible 5kw of pool heat from only 1kw (1000 watts) of electricity to give incredibly low running costs.

Plug and play – runs from a standard 13A power socket and comes complete with cable, RCD and UK plug (UK to EU adaptor supplied)

Designed for small above ground pools up to 12m3 of water (pools with a solar cover)

Order your Thermotec Penguin Reversible heat pump now to reserve stock.


The Thermotec Penguin Reversible heat pumps are incredibly easy to setup for your pool.

The New Thermotec Penguin Reversible outputs up to 5kw of pool heat but only uses 0.98kw of electricity!


Thermotec Penguin Mini Heat Pump

2. Features

  • Outputs up to 5kw of pool heat from only 0.98kw of electricity used
  • Brand new design
  • Dimensions – 50 x 52 x 56cm (l x w x h)
  • Built in water flow switch
  • Suitable for pools up to 12m3 of water
  • Desired water temperature can be set to be between 15c and 43c
  • Simple “plug and play” heat pump
  • Comes complete with 4 meter power cable and with a UK plug/RCD (adaptor)
  • 1.25″/1.5″ (32/38mm) water connections for standard above ground flexible pool hose
  • Suitable for all above ground pool types eg Intex, Bestway, Doughboy etc..
  • 2 x Metal jubilee hose clips included
  • Operates with outside air temperatures down to -5c !
  • Requires a minimum water flow rate of 1.5m3 an hour from your pump/filter
  • Eco Friendly R32 refrigerant gas
  • No bypass required
  • Easy to operate – simply lift the beak to access the buttons
  • Gives much lower running costs than an electric pool heater, 1kw of electricity used outputs approx 5kw of pool heat to your pool!
  • Titanium Heat Exchanger
  • Comes with user manual, drainage, plug, water connections, jubilee clips, power cable, UK adaptor
  • 2-Year Warranty


3. Easy to Use Digital Control Panel

The Thermotec Penguin Reversible has a easy to use LED display.

Simply lift up the Penguin’s yellow beak to access the control panel.

The beak cleverly protects the control panel from the rain and the weather.

Simply use the up and down arrow keys to set your desired pool temperature and the Thermotec Penguin Reversible will automatically turn on and off to maintain the desired temperature



4. Supplied with UK 3-PIN Plug and inline RCD

5. Built in Water Flow Switch

The Thermotec Penguin Reversible has a built in water flow switch.

The water flow switch automatically shuts down the heat pump when there is no (or insufficient) water flow and re-starts it when sufficient water flow is resumed.

This allows the Thermotec Penguin to be used in conjunction with a time clock on the pool circulation pump.

When the circulation pump turns off, the Thermotec Penguin will shut down and when the circulation pump re-starts, the Thermotec Penguin will also re-start.


(Note: the Penguin should be removed from the plywood base when in use as this is only for transport purposes)

6.  What size heat pump do I require for my pool?

How to Calculate Your pool Water Volume:

You can easily calculate the water volume in your pool as follows: –

Round Pools

To calculate the volume of a round pool, you can use the formula

Pool Volume = 3.14 x radius x radius x depth

  1. Measure the diameter of the pool in metres
  2. Half the diameter to give the radius of the pool
  3. Multiply 3.14 x radius x radius x pool depth


A 12′ (3.66 m) diameter round above ground pool with a depth of 0.8m

Diameter = 12′ x 0.305 = 3.66m

Radius = 3.66 / 2 = 1.83m

Volume = 3.14 x 1.83 x 1.83 x 0.8m = 8.4 m3

The Penguin Reversible supports pools up to 12m3 so this heat pump will be ok for this pool

Note: These sizing’s assume that the pool will be covered with a solar cover when not in use. All pools should have solar covers.

Rectangular Pools

Pool volume = length x width x depth


6m x 4m pool, 0.8 m deep = 6 x 4 x 0.8 = 19.2 m3

Maximum for Penguin Reversible = 12m3 so this heat pump is too small – please look at our SunSpring or Thermotec Eco Fun heat pumps.

Typical Pool Sizes and Volumes

8′ x 30″ Intex above Ground pool = 3.6 m3 – Thermotec Penguin  Reversible 5kw OK !

10′ x 30″ Intex above Ground pool = 5.5m3 – Thermotec Penguin Reversible 5kw OK !

12′ x 36″ Intex above Ground pool = 9.6 m3 – Thermotec Penguin Reversible 5kw OK !

The sizing guide for an above-ground covered pool is:-

ModelKwMax Pool Volume

(Warmer areas in the UK)

Max Pool Volume

(Colder areas in the UK)

Absolute Max Pool Volume (Hotter Climates – Europe)
Penguin Reversible 5kw Heat Pump5kw12m310m315m3

Please note that these sizes are based on summer use (May-Sep) to ensure that you maintain a good water temperature as long as you cover the pool with the solar cover for as many hours a day as possible (max 4 hours uncovered). The colder the outside air temperature (including night temperatures as this is the coldest time where you will lose most heat) the larger the heat pump size you will need (kw).

Please call us if you are unsure of the size of heat pump required for your pool

7. Additional Fittings

You may need some of our fittings so that you can add this heat pump to your pool, so please take a look at our Hose pipe and Fittings 

Or call us to get some help with these items.


The Thermotec Pengin comes complete with screw in hosetails to take either 32mm (1.25″) or 38mm (1.5″) standard flexible pool hose for above ground pools – ie Intex/Bestway etc..

8. Specifications


Please also see the Specifications tab at the top of the page

9. Installation


Installation is very easy and straightforward.

The Thermotec Penguin is connected to your existing pool pipework

It uses the existing pool circulation pump to pump the pool water through it.

Please see the user manual under the product literature tab at the top of the page, for more information on how to install your Thermotec Penguin heat pump

10. Savings

Using the Thermotec Penguin heat pump to heat your pool rather than an electric heater will save you money on running costs

The Thermotec Penguin only uses 0.98kw of electricity to produce 5kw of pool heat.

If you compare this with an electric pool heater, a 5kw electric pool heater would use 5kw of electricity

The Thermotec Penguin therefore is only less than 1/4 the running cost of an electric pool heater – saving you money!

11. Pool Hose

You may need to purchase an additional length of pool hose to connect from your heat pump to the pool

We sell both 1.5″ and 1.25″ pool hose


Please click on this link to add some to your basket – Hose and pipe fittings

12. Availability

Thermotec Penguin Reversible pool heat pumps are in stock in the UK from March 2021. They can then be shipped to any UK address on a 1 – 3 day delivery service.

You can pre-order your unit now to ensure you will be one of the first to receive this unit

13. Delivery

The price includes FREE UK delivery.

We can ship the Thermotec Penguin Reversible heat pumps to any country. Please contact us for a shipping quote.

14. Warranty

The Thermotec Penguin Reversible heat pumps come with a 2-year warranty

  • 2-years warranty on all components in the UK
  • Warranty subject to the unit being installed in accordance with manufacturer’s instructions.

15. Technical Support

We are happy to provide technical support for all swimming pool heat pumps that we supply. Please call us and we will advise you further.

16. Product Literature

Please click the links below to download pdf brochures for these products

Thermotec Penguin Reversible Heat Pump Brochure
Thermotec Penguin Reversible Heat Pump User Manual

Please also see the Product Literature tab at the top of the page

intex pools - hot splash heat pump

17. Assistance

If you need any assistance or advice as to which model would be best for your pool, please feel free to Contact Us

for more information, also see our FAQs page

All items sold in accordance with our terms and conditions

for all enquiries, please contact us at enquiries@heatpumps4pools.com


15. Product Literature

Please click the links below to download pdf brochures for these products


Please also see the Product Literature tab at the top of the page


We accept all major credit and debit cards, Bank Transfer (BACS) and PayPal


PayPal Credit

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For details of PayPal Credit please click here: PayPal Credit


The prices shown include FREE UK delivery for orders over £50 or £6.50 for orders under £50

We can ship to any country. Please contact us for a shipping quote.

The lead time on most items is normally on a 1-2 day delivery,  subject to availability. Please call to check availability.

Additional information

Weight35 kg
Dimensions50 × 52 × 56 cm