Key advantages of the Kensa Evo

A++ energy efficiency

Maximise the Renewable Heat Incentive (RHI) income and reduce carbon emissions with the Evo’s high efficiency.

Affordable heating, hot water & cooling

Experience the pros of renewable heating, hot water and cooling without the cons of pricey bills.

A smart system manager

Leave the hard work to the Genesis System Manager – a clever system that optimises the Evo’s performance.

Quiet & modern design

Enjoy peace and quiet with discreet sound levels and a sophisticated system that fits snugly inside the home.

Rewarding payback

Make and save money over the Evo’s 20-year design life, with minimal maintenance and no more annual servicing.

Hassle-free electrical connection

Connect to the electricity grid without delay. The Evo’s Connect & Notify approval can save time and money.

Easy to install

Install the Evo with the ease of versatile features and a straightforward touch-screen set-up.

Safe & non-combustion heating

Choose the safe alternative to combustion fossil fuels and flammable refrigerant renewables. Like all Kensa products, the Evo uses a non-flammable refrigerant.

An A++ in efficiency & intelligence

Boasting an A++ Energy-related Product (ErP) rating, the Evo is our most efficient ground source heat pump. Its evolution sees a 15% gain in efficiency since its predecessor, maximising income from the RHI.

The Evo’s high ErP rating means it produces much more energy than it consumes from electricity – saving on heating bills, lowering carbon emissions and improving air quality. With an impressive 4.7 SCoP at 35°C, you’ll have top-mark heating no matter the season.

The Genesis System Manager takes the Evo to a whole new level of performance. As the world’s first ground source controller, the Genesis monitors and records efficiencies to help the Evo perform at its best.

Effortlessly integrating with all heating control systems, the Genesis allows flexibility for your heating to be as smart or simple as you like.

“Whilst Kensa has made some innovative changes, the heat pump itself is still as simple and reliable as ever.”

Matt Young – Installer, Griffiths Air Conditioning

Affordable hot water, heating & cooling on demand

Heats in the winter, cools in the summer

The Evo system produces hot water up to 60°C*. Creating up to four times the energy it consumes, its high efficiency makes heating and hot water all-the-more affordable.

Working together with new or existing heating distribution systems, such as radiators or underfloor heating, the Evo delivers low-cost warmth to the home.

When summer finally arrives, you can even benefit from passive cooling as a useful add-on.

*Excluding 17kW


Rewarding returns & minimal maintenance

Throughout its 20-year design life, the Evo requires no servicing, needs little maintenance and produces next-to-no emissions. All the while earning a 7-year income from the Domestic RHI.

On top of its 5-year guarantee, the Evo has technical support for life for your complete peace of mind.

See costs & payback

Quietly brilliant

Our most intelligent and efficient heat pump is not only designed for peace of mind, but a peaceful environment.

The Evo’s noise levels range from 49.2 to 56.2 decibels (dB) – comparable in sound to the average dishwasher.

“I can’t believe how quiet the heat pump is! We don’t have the door on the utility room yet and you can hardly hear it running at all.”

Geraint Roberts - Self Builder

Easy to install & commission

Connect & Notify approved

The Evo series* is Connect & Notify-approved on the Energy Network Association’s (ENA) heat pump database, saving time and quickening the RHI process versus most non-approved ground source heat pumps.

In most projects, approval means the installation can go ahead immediately; the local District Network Operators (DNO) don’t have to be notified until after installation. Approval almost always protects consumers from paying for an electricity upgrade.

*The 17kW is ‘apply to connect’ due to C&N’s 32A power limit, but meets the high standards of C&N approval – DNOs will usually cover necessary upgrade costs.
See more technical features

Kensa’s installation services

Our customer support is tailored to projects of all shapes and sizes.

Looking for an installer?
Submit your plans and we’ll recommend a local Kensa-approved installer.

Need MCS support?
Our MCS Umbrella service will guide installers through the entire process.

“The Evo is modern and contemporary, but still has the same simple set up as all of Kensa's products.”

Tom Sandell - Installer, TWS Plumbing & Heating

See more reviews

Looking for costs?

See heat pump prices & project examples.

Unrivalled support

Like all Kensa customers, Evo owners and installers have complimentary technical support for the system’s lifetime. From design and commissioning to post-installation advice.


See how we support you

Kensa Evo in the wild

It’s easy for us to talk about the remarkable Evo heat pump, but the real proof is how it performs out in the field.

In rural Wales, the Evo put heat into the heart of this barn-converted family home – a dream project for local couple Geraint and Mererid.

See the case study

Looking for technical specifications?
Discover features & technical data.

Models & Costs

Evo heat pump costs

Single-phase power

7kW from £5,862

9kW from £6,395

13kW from £6,928

17kW from £8,526


Three-phase power

15kW from £7,461*


*List prices exclude VAT.

Tell us about your plans & get a quote

The model that is specified for your project will depend on factors such as heat demand and insulation levels.

For a better idea of project cost and payback, get a quote at no obligation.

Get a quote

Project cost example: single self-build or renovation

Type of system 13 kW Evo ground source heat pumpVs. LPG boiler
Type of ground arraySlinkies (common) 1Pond mats (near water)2Boreholes (limited land)3
Land area required1,000 sq/m1,000 sq/m of lake 200 sq/m -
Appliance & infrastructure costs*£16,000£15,250£28,500£1,500
Domestic RHI income (over 7 years)**£26,000£26,000£26,000Not eligible
Running costs (over 7 years)*** £10,000£10,000£10,000£15,000
Servicing costs (over 7 years)****£0£0£0£700
Total net cost (after 7 years)*****£0£750 profit£12,500 cost£17,200 cost

Project cost example: 4 new-build homes

Type of system 4 x 13kW Evo heat pumpsVs. LPG boiler
Type of ground arrayShared Ground Loop Array of boreholes (common)1Shared Ground Loop Array of pond mats (near water)2Shared Ground Loop Array of slinkies (if enough land)3-
Land area required600-900sq/m3,500 sq/m of lake3,500 sq/m -
Appliance & infrastructure costs*£92,000 £58,000£64,000£15,000
Non-Domestic RHI income (over 20 years)**£185,000£185,000£185,000Not eligible
Running costs (over 20 years)*** £125,000£125,000£125,000£187,500
Servicing costs (over 20 years)****£0£0£0£2,000
Total net cost (after 20 years)*****£32,000 cost£2,000 profit£4,000 cost£204,500 cost

Mid-research? Established plans? 

Wherever you are, get a quote from Kensa.


Performance features

Electrical ‘soft starts’ reduce peak starting load and avoid flickers in electricity.

Modulating pumps are commissioned to meet the flow requirements of the Evo unit, and the load side pump automatically modulates between normal and setback speeds.

Self-adjusting pressure controlled hot water system and domestic hot water boost controllers synchronise to heat pump cycles to minimise energy use.

Integrated water pumps for both the ground side and load side.

A third heat exchanger recovers internal waste heat from the compressor circuit.

Weather compensation fitted as standard.

Water pump exercise program reduces maintenance requirements.

Watch Evo technical overview

Warning signals for low flow rates reduce system faults.

Fixed speed scroll compressors deliver the highest heat pump efficiency possible.

Stainless steel heat exchangers enhance energy output and eliminate corrosion.

Easy installation features

Simple screw access to the Evo’s electrical components.

Curved cut-outs offer an extra level of installation flexibility.

Rear water connections enable quick and easy connection to the ground array and heating distribution system.

How to install a Kensa Evo


Evo components

Core heat pump unit (refrigeration components)

Controller & water pumps


5 years

2 years

Accreditation & awards

Connect & Notify approval

7 – 15kW have Connect & Notify approval from the Energy Networks Association (ENA), ensuring a trouble-free connection to the grid. 17kW ‘apply to connect’ but DNO will usually cover necessary upgrade costs.

MCS accreditation

Microgeneration Certification Scheme (MCS) accreditation proves compliance and supports the Evo’s eligibility for the RHI.

A++ energy efficiency

A ++ Energy-related Product (ErP) rating.

ISO9001 approval

The Evo is made in an ISO9001 accredited factory.

Heat Pump Product Of The Year

Winner at the ACR & Heat Pump Awards 2018.

Best Sustainable Technology/Product

Winner at the Build It Awards 2017.

Domestic Heating Product Of The Year finalist

Finalist at the H&V News Awards 2018.


1145mm high

600mm wide

575mm deep

Technical data

Nominal thermal kW rating79131715
Part NumberK070-S1HK090-S1HK130-S1HK170-S1HK150-S3H
MCS ApprovedBBA 0055/41BBA 0055/42BBA 0055/43BBA 0055/44BBA 0055/39
Performance data - rated heating output at B0/W35 BS EN14511
Power consumption1.
Co-efficient of Performance*4.484.364.143.814.2
Immersion heater outputKensa heat pumps do not feature back-up electric immersion heaters**
ENA Connect & Notify approvalYesYesYesNo***Yes
Brine (primary) based on 0°C in / -4°C out
Design flow rate kg/min29.128.439.250.642.8
Pressure drop kPa at design flow rate12111729.220.6
Max inlet temperature °C15
Min temperature °C (outlet)-5 (at standard settings)
Heating water (secondary) based on 30°C in / 35°C out
Design flow rate l/min22.428.538.951.245.9
Pressure drop kPa at design flow rate45.710.128.313.6
Max flow temperature °C****6463635062
Electrical values at B0/W35
Rated voltage220 - 240V / 50 - 60 Hz380-420V / 50-60 Hz
Power supply rating amps2525405016
Rated current (max) amps18.520.631.13511.8
Typical running current at B0/W35 amps8.411.416237.3
Starting current amps*****18.228.741.34544
Refrigerant circuit
Process mediumR407C
Fill volume kg1.91.922.12
Compressor typeScroll
H X W X L (mm)1145 x 600 x 575
Dry weight kg153154
Operating pressure
Brine circuit min (primary) bar gSettable at commissioning
Heating water circuit min (secondary) bar gSettable at commissioning
Low pressure reset bar gSettable at commissioning
Connection sizes
Primary IN and OUT (speedfit) mm28
Heating flow and return (speedfit) mm28
Performance (based on Average Climate) at 35°C
ErP ratingA++A++A++A++A++
Seasonal space heating energy efficiency180%178%168%155%171%
Performance (based on Average Climate) at 55°C
ErP ratingA++A++A++A+A++
Seasonal space heating energy efficiency140%137%131%118%135%
Sound Power Level
Sound Power Level (dB)49.456.149.756.249.2
* The COP figure quoted is calculated as per EN14511.
** In-built immersion heaters will increase running costs and CO2 emissions as they use direct electricity, because of this Kensa heat pumps do not include them.
***The 17kW Evo is ‘apply to connect’ due to the C&N 32A power limit, but still meets the high technical standards of C&N approval (Class A limits of IEC 61000-3-2 and the Technical Requirements of IEC 61000-3-3). This means that any necessary electricity network upgrade costs will usually be met by the DNO’
****By increasing the flow temperature from the heat pump the efficiency of the unit will drop and the COP decreases.
***** Kensa Evo heat pumps incorporate smart starts as standard to limit the starting current of the compressors. For full details on how the starting currents are calculated please contact Kensa.
******The SCOP figure quoted is calculated as per EN14825.
Note: Design flowrates are for a ground temperature of 0 and –3oC and a load temperature of 30oC and 35oC

Get the MCS stamp of approval

with Kensa’s MCS Umbrella Service.

Lifetime technical support

“The support team at Kensa have made recovery and service into an art form.”

“First class product and excellent after sales attention – even when out of guarantee”


Case study reviews

Evo Ground Source Heat Pump

“I can’t believe how quiet the heat pump is! We don’t have the door on the utility room yet and you can hardly hear it running at all.”

Geraint Roberts - Self Builder

See the case study

Project overview

4-bedroom retrofit barn conversion, 240m²

Rural area, off the gas grid

13kW Kensa Evo ground source heat pump

Underfloor heating on ground-floor level

4 x 40m slinkies under adjacent field

Eligible for Domestic RHI

Evo Ground Source Heat Pump

When you factor in all the other benefits that ground source brings, such as lower running costs and reduced fuel bills, you’ll see you have an efficient, renewable heating system that you’ll see the financial benefits from for years to come.

Howard Smith - Self Builder

See the case study

Project overview

4-bedroom new build house

13kW Evo ground source heat pump

Underfloor heating throughout

3 x 50m slinkies

Eligible for the Domestic RHI

Evo Ground Source Heat Pump

"The utility room happens to be underneath our bedroom, but we’ve never been able to hear the heat pump when it’s been running, which just goes to show how quiet it is!"

John Berriman - Homeowner

See the case study

Project overview

300m² property, comprising a 4-bed cottage and 2-bed annexe

Knock down and rebuild project

13kW Kensa Evo ground source heat pump

3 x 50m slinkies under adjacent field

Eligible for Domestic RHI

Kensa Google reviews

Mike Hayes
Mike Hayes
12:25 08 May 20
Well, Kensa technicians continue to do a wonderful job. We installed our heat pump back in 2007. Paid a fair price, got... a grant towards the cost and have benefited from cheaper heating ever since. Any other boiler I am sure would have been on the scrap heap by now and the manufacturers not in the slightest bit interested in us. But not Kensa, they have continued to give first class technical support throughout the thirteen years - all advice free, friendly and helpful. We’ve bought a few bits, but not many and several parts have been provided free of charge. This time it was Todd doing the magic programming a new Corel for us, which he sent us by return at absolutely no cost to us. So anyone reading this - thinking of having a Kensa heat pump - do it! You won’t be sorry. Todd likened it to a land rover - sturdy, robust, efficient and long lasting and I think that’s absolutely right.read more
Steve Taylor
Steve Taylor
14:47 04 May 20
Can't recommend Kensa enough. Great product, phenomenal customer service. I called them after our heat pump stopped... working and spoke to an engineer called Tod. He was extremely knowledgeable and talked me through getting it going again over the telephone, even though turned out that the fault wasn't anything to do with the heat pump itself! Above and beyond, even messaged me again to check everything was still ok. Thanks Tod, you are an asset to Kensa!!read more
Duncan Rae
Duncan Rae
17:11 27 Apr 20
Great company to work with. Very professional in every aspect of their business. The best company to deal with if want... a heat pump system that is designed and installed by highly skilled and experienced people.read more
Jon Tobin
Jon Tobin
20:44 12 Mar 20
The staff at Kensa could not have been more helpful I bought a 10 kw heat pump in 2007 which has worked without a... problem untill while extending my drains I cut through one of the underground pipes. The help I received enabled me to get my system up and running with only a day down time very very helpful.read more
Jean Clarke
Jean Clarke
20:07 03 Mar 20
We found all Kensa personnel helpful and knowledgeable, especially Tom Worth, when our heat exchanger broke down. ... Very pleased we purchased Kensa. Peter Lyonsread more
Robert Evans
Robert Evans
10:39 20 Feb 20
Similar to another reviewer, we bought Ground Source Heat Pump from Kensa some 10 or more years ago. Never had any... problems what so ever, until recently it fails to start and only rarely does it get up and going. Called the service desk, spoke to one of the Tom's, excellent knowledgeable advice culminating in us purchasing a replacement smart start box. I was nervous about doing the replacement, but encouraged by Tom, gave it a shot, it worked perfectly, job done ! A couple of calls to the team always results in friendly expert definitive advice, everything breaks at some point, so its all in the recovery and the support team at Kensa have made recovery and service into an art form. The product is by design inherently more reliable than oil or gas boilers and the Kensa support experience confirms it was the right decision to buy the product. Congratulations.read more
Mark Neal
Mark Neal
20:39 15 Jan 20
Came across the invoice for our Kensa heat pump during a clear out. It cost us about £6k just over ten years ago (+... digger hire for a few days) and I reckon it's saved us at least £750 per year since (probably closer to £1000). Maintenance cost so far has just been inhibitor for the heating system.read more
David Welch
David Welch
21:44 05 Dec 19
First class product and excellent after sales attention - even when out of guarantee
Derek Shanks
Derek Shanks
09:44 01 Dec 19
I bought a 10 year old house with a Kensa Ground Source Heat Pump last year. Recently, my hot water has not been as... hot as usual so I contacted Kensa for some advice. Bear in mind this is a 10 year old heat pump, well out of warranty . . . They could not have been more helpful! I have spent at least a couple of hours on the phone with Todd from their technical support team. He helped me troubleshoot, talked me through how to open the unit up and check things myself. He sent me some small parts free of charge and I also bought a couple of replacement parts, which he again talked me through how to fit. I have never come across a single company in my entire life that wouldn't charge me for this time. I'm well out of warranty and yet Todd did not hesitate to help. No bill for labour, just patient, friendly advice. What amazing service! Second to none! If I ever need another heat pump I'll be going straight to Kensa. Best customer service I've ever experienced!read more
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