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BWT Pioneer Inverter Heat Pumps 8kw to 20kw

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Free UK Delivery Over £50

UK Mainland Only (Excludes Highlands)

All Prices include VAT

Pioneer Inverter Heat Pump

Update: Please Note this range is not available until Mid May 2019

HeatPumps4Pools are the leading specialist supplier of swimming pool heat pumps.

New for 2019, the BWT Pioneer Inverter range of pool heat pumps offers a selection of models to suit pools between 18m3 to 95m3.

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

The sizing guide for a covered pool is:-

Model Kw Recommended Pool Volume
BWT Pioneer Inverter 8kw 18-35m3
BWT Pioneer Inverter 9.5kw 20-40m3
BWT Pioneer Inverter 12.5kw 30-60m3
BWT Pioneer Inverter 16.5kw 40-75m3
BWT Pioneer Inverter 20kw 50-95m3


With all inverter pool heat pumps, you should always oversize the heat pump as much as possible. 

Oversizing the heat pump allows the compressor to run at a reduced output (eg 25% to 50%) of its total power and this will then deliver the highest efficiency and the lowest running costs.

All BWT Pioneer Inverter heat pumps are for single phase power (ie 220v to 240v) to suit most properties

2. Description



3. Features

  • Inverter driven with three speed fan and compressor to deliver the lower running costs with maximum heat output
  • High efficiency with COPs of up to 6.0. This means that for every 1kw of electricity used by the heat pump, 6kw of heat is returned to the pool.
  • Equipped with an easy to use digital controller
  • Six different models: 8kw, 9.5kw, 12.5kw, 16.5kw and 20kw
  • Compressor can run at three speeds - low, medium and high speed
  • All models single phase power (ie 220v to 240v)
  • Low noise, variable speed fan.
  • Metal case
  • Defrosting by cycle inversion
  • Titanium heat exchanger - GMCC compressor
  • Operates in air temperatures down to 0°C 

4. COP And Performance

By using the latest inverter technology, the BWT Pioneer Inverter canout perform traditional on/off type heat pumps as well as many other inverter driven models.

Even as the outside air temperature falls, the BWT Pioneer Inverter will still perform well, delivering heat to your pool.

The BWT Pioneer Inverter heat pumps can work well with outside air temperatures as low as 0c so is ideal for extended season use.

The COP (Coefficient of Performance) is the ratio of the amount of heat (in kw) that the heat pump delivers to your pool compared to the electricity that the heat pump uses (in kw)

By using the 3 speed inverter technology, the  Inverter has COPs up to 6.2. This means that in these conditions, 1kw of electricity consumed by the heat pump will output 6.2kw of heat to your pool !

5. Extremely Quiet Operation

The BWT Pioneer Inverter range work very silently thanks to a unique internal ventilation system and the inverter technology.

Both the fan and compressor automatically adjust their speed to one of the speeds to match the pool heat demand, therefore once the pool is up to temperature, the unit can operate with reduced power consumption and noise.

6. Digital Controller

New touch-screen digital control panel for easy operation

Pioneer Inverter Heat Pump Display

7. Specifications

 Pioneer Inverter Heat Pumps Specifications

Pioneer Inverter Heat Pumps Specifications

8.Optional Extras:

Heavy Duty Mounting Feet Thermotec-Inverter-Horizontal-rear.jpg

These heat pumps come with rubber  mounting feet (picture to follow shortly).

Alternatively you can purchase these heavy duty Mounting Feet.

These raise the unit off the ground by approximately 100mm, and also help to reduce vibration.

Please see our Mounting Feet and Slabssection for more information.

Bypass Kit Please see our Bypass Kitssection section for more information.
Winter Cover

The unit comes with a lightweight winter cover, however we offer a heavy duty cover which will give you added and extended protection against the winter weather

Please see our Winter Cover section section for more information.


9. Payment

We accept all major credit and debit cards, cheques and Bank Transfer

All major credit cards accepted

Note: We offer an additional 1% discount on these prices for payment by debit card or bank transfer.  Just choose bank transfer or debit card as the payment type when you complete the checkout process.

10. Installation

Installation is straightforward. We can provide advice on installing your heat pump. We can also offer an installation service if required.

We recommend that a bypass is installed to allow the heat pump to be drained in winter if not in use. We sell bypass kits if required. 

Please see our Installation Tips pages for information on how to install your heat pump. Our Photo Gallery also has photograph examples of pool heat pump installations and please also see the FAQ pages for more information

11. Availability

The range of BWT Pioneer Inverter pool heat pumps are in stock and can be shipped to any Uk address in 5 - 7 working days.

12. Delivery

The price includes FREE UK delivery.

We can ship the Climexel Pioneer Inverter heat pumps to any country. Please contact us for a shipping quote.

13. Warranty

The BWT Pioneer Inverter heat pumps come with the following parts-only warranty:-

  • 3 Years parts warranty on the heat pump in the UK (Labour included in France only)
  • 10 Year parts warranty on the titanium heat exchanger
  • 10 Year parts warranty on the compressor
  • HeatPumps4Pools also have a network of engineers who can maintain or repair any heat pump
  • Warranty subject to the unit being installed in accordance with manufacturer's instructions.

The warranty is a parts-only warranty, or return to base (at the customers cost)

The warranty will not apply where the heat pump has been damaged by freezing.

14. Technical Support

We are happy to provide technical support for all Inverter swimming pool heat pumps that we supply.

15. Product Literature

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

16. Assistance?

If you need any assistance or advice as to which model would be best for your pool, please email 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

  • Model: BWT Pioneer Inverter
  • Shipping Weight: 70kgs
  • Manufactured by: HeatPumps4Pools