RHP, reversible heat pump


The environmentally-friendly solution for ventilation, heating and cooling - all integrated in one air handling unit. 

Function and application

Reversible heat pump (RHP-ER/RHP)

Function and application

The environmentally-friendly solution for ventilation, heating and cooling in an integrated air handling unit. 

  • One calculation incl. documentation and technical data via EXselectPRO
  • One factory-tested unit
  • One control system, the advanced EXcon control system
  • One supplier for the whole installation
  • No need for extra heating or cooling installations

We provide the reversible heat pump in two versions:


Here the rotary heat exchanger is positioned between the evaporator and the condenser.

With this solution you get:

  • The lowest energy consumption
  • Option for cold recovery


Here the heat exchanger and heat pump are positioned in separate modules. This solution can be chosen with either a rotary heat exchanger or a crossflow heat exchanger.

With this solution you get:

  • A compact solution, i.e. easier on-site transport of modules
  • No need for de-icing


VEX4000 model

Length   Depth

 VEX4010 [mm] 1309 820 1690  1055
 VEX4020 [mm]
1309 820 1690 1275
 VEX4030 [mm]  1499 820 1690  1549
 VEX4040 [mm]
 1599 820 1690  1630
 VEX4050 [mm]
 1744 820  1790  1755
 VEX4060 [mm]
2069 1100 1790 1930
 VEX4070 [mm]
2069 1200  1890 2115
 VEX4080 [mm]
2494 1200 1890 2325
 VEX4090 [mm]
2744 1300  1990 2625
 VEX4100 [mm]
3024 1300 1990 2895

The stated dimensions are the dimensions for the section - use EXselectPRO to get the correct dimensions for the whole air handling unit, including assembly fittings and seals.


Reversible heat pump (RHP-ER/RHP)


VEX4000RHP is made from high-quality components to ensure reliability, long lifetime and low energy consumption.


 Schroll kopmpressor

Danfoss VTH Scroll compressor

  • Low energy consumption
  • High efficiency across the whole capacity range
  • Long lifetime
  • Minimal noise level

Expansion valve:

Danfoss Colibri Ekspansionsventil 

Colibri expansion valve

  • Very reliable and long lifetime
  • Precise injection of coolant in evaporator
  • Optimal evaporation means lower energy consumption

Suction gas exchanger:


Suction gas exchanger 4K SC

  • Increased capacity with the same power consumption = increased efficiency
  • Reduced risk of hammering


Rotor - surface (VEX200 & VEX4000) Sorption (HUGO)

Sorption rotor

We recommend that VEX4000RHP-ER and VEX4000RHP are configured with a sorption rotor – especially if the air handling unit shall be installed in an area with a hot and humid climate.

Add all about the product series RHP, reversible heat pump


Get free advice on ventilation products and system solutions

Export Requests:
Odensevej 76
DK 5550 Langeskov

Tel +45 6566 1236
E-mail: export@exhausto.dk

Calculation programs

Use EXHAUSTO's free calculation programs for calculating ventilation plant and system solutions

Go to Calculation Programs
Vex overview

VEX Summary

Get a quick overview of our entire range of compact VEX air handling units with heat recovery.

View the VEX summary here