• Kensa plantroom ground source heat pump square


Kensa’s Commercial Plant Room series is comprised of modular three phase ground source heat pumps especially designed for commercial or larger buildings.


  • Modular system provides greater flexibility to match the heat pump output to the load of a commercial building.
  • With multiple units it is possible to provide heating and cooling to different parts of a building simultaneously via a Building Management System (BMS).
  • Specified to allow straightforward interface with a buildings heating distribution system, such as fan coils, underfloor, and air handling units.
  • High Temperature model provides heating to 60°C.
  • Dimensions HxWxL (mm) – 1750 x 800 x 900


Ideal for:

Commercial premises.ErP logo v3


  • Heating only models: 40kW, 45kW, 60kW and 75kW produce temperatures up to 55°C.
  • High Temperature 25kW model produces temperatures up to 60°C.
  • Heating & cooling models: 25kW, 30kW, 40kW, 45kW, 60kW and 75kW.


  • High specification acoustic hoods and double vibration isolation reduce noise and vibration.


  • Designed to be installed within a plant room.
  • Compatible with Building Management Systems (BMS).

Power saving

  • DNO friendly ‘Soft Starts’ fitted as standard to ensure peak starting load is minimised.
  • Two temperature set points produce the required heating at the highest efficiency without the need for costly direct immersion heaters.
  • Ability to modulate between full and half loads to reduce power consumption and running costs.
  • Weather compensation fitted as standard.


  • Copeland scroll compressor with a minimum design life of 20 years.
  • Ground and underfloor circulation pumps.
  • Water pumps available as an optional extra.
  • In-built sensors and probes to enable remote commissioning.


  • 5 year warranty for the heat pump unit.
  • 2 year warranty for the controller and water pumps.
  • 2 year internals warranty.


  • MCS (25kW – 45kW only)
  • ISO9001

Plant Room Technical Specifications

Nominal thermal kW rating253040456075
Product Code
X - H Heating Only
R Reverse Cycle
C Cooling only +
MCS ApprovedHeating: BBA0055/16
Reverse cycle: BBA0055/24
Heating: BBA0055/17
Reverse cycle: BBA0055/25
Heating: BBA0055/18
Reverse cycle: BBA0055/26
Heating: BBA0055/19
Reverse cycle: BBA0055/27
Performance data - rated heating output at B0/W35 BS EN14511
Power consumption6.589.712.815.919
Co-efficient of Performance*
Performance (based on Average Climate) @ 35°CA+A+A+A+ † † † †
Performance (based on Average Climate) @ 55°CA+A+A+N/A † † † †
Immersion heater output
Brine (primary): Based on 0°C in / -4°C
Design flow rate kg/min68.587.4105.6135.2167.8207.4
Pressure drop kPa at design flow rate11.11723.625.221.831.7
Max inlet temperature °C151515151515
Min temperature °C (outlet)-5 (at standard settings)-5 (at standard settings)-5 (at standard settings)-5 (at standard settings)-5 (at standard settings)-5 (at standard settings)
Heating water (secondary): Based on 30°C in / 35°C out
Design flow rate l/min74.795112147.6183.5224.9
Pressure drop kPa at design flow rate1312.216.919.51725.5
Max flow temperature °C***505050505050
Electrical values at B0/W35
Rated voltage400V / 50Hz
Power supply rating amps323240506370
Rated current (max) amps222532415263
Typical running current at B0/W35 amps131418232936
Starting current amps ****577589101112140
Refrigerant circuit
Process mediumR407CR407CR407CR407CR407CR407C
Fill volume kg2.252.533.753.755.5
Compressor typeScrollScrollScrollScrollScrollScroll
H X W X L (mm)1750 x 800 x 9001750 x 800 x 9001750 x 800 x 9001750 x 800 x 9001750 x 800 x 9001750 x 800 x 900
Dry weight kg200250280300350380
Operating pressure
Brine circuit min (primary) bar g0.
Heating water circuit min (secondary) bar g0.
Low pressure reset bar g1.
Connection sizes
Primary IN and OUT PN10/16DN40DN40DN40DN40DN40DN40
Heating flow and return PN10/16DN40DN40DN40DN40DN40DN40
Sound Power Level
Sound Power Level (dB)68687171 † † † †

ᵻ Units are currently being ErP tested and will be available when complete.
^The 45kW Plantroom produces above 50kW at a ground temperature of 0°C and load temperature of 35°C.
+ Cooling only units are not MCS approved.
* The COP figure quoted excludes the water pump electrical input and is calculated according to 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.
*** By increasing the flow temperature from the heat pump the efficiency of the unit will drop and the COP decreases.
**** The starting currents are per phase. For full details on how the starting currents are calculated please contact Kensa.
Note i): Design flowrates and pressure drops are based on a ground temperature of 0°C and –4°C and a load temperature of 30°C and 35°C.

Note ii): The P500X unit is classed as a Low Temperature Space Heater as per the ErP regulations.


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