DCA dehumidifying air conditioner

DCA Ecoclima dehumidifying air conditioner with heat recovery module
  • Assenza del compressore
  • Elevata capacità di deumidificazione
  • Ricambio d'aria con recuperatore d'aria integrato con efficienza del 75%


The built-in ceiling-mounted Ecoclima DCA dehumidifying air conditioner is an innovative complete air management system, the main features of which are: ability to dehumidify without the compressor of the refrigeration cycle; ability to control the room temperature by cooling, when necessary, the treated air, using approximately just 1 kW of sensible power; to renew stale room air by drawing fresh air from the outside and recovering about 75% of the heat in a cross-flow air-to-air heat exchanger.

Dehumidification is achieved using chilled water as the dehumidification source, at a nominal input temperature of 11.5°C, and forced air circulation to enhance the condensation capacity. The result is a dew point about 1.5°C higher than the temperature of the input fluid and numerous advantages in terms of energy savings and comfort in comparison with traditional dehumidifiers.

The DCA dehumidifying-air conditioning system

In aria fresh air from outside
In aria air to be dehumidified and cooled
Out dehumidified and cooled air
Out stale air to the outside

  • No vibrations since there is no compressor.
  • Low noise, coming only from the movement of the air.
  • Reduced electrical consumption.
  • Low maintenance.
  • Uses a standard water cooler.
  • Cooling mode available.
  • Heat recovery system for integrated air renewal and dehumidifying air conditioning unit.

Silencer for acoustic comfort

The system has a nominal flow rate of about 300 m3/h which can be reduced for quieter operation (night-time setting). The machine is equipped with a silencer so as not to exceed a sound pressure level of 35 dB (at 3 m in free field).

Optimised comfort with smartcomfort regulation

In cooling mode, the seamless integration of Smartcomfort control technology with the Ecoclima DCA dehumidifying air conditioner keeps humidity levels under control, maintains the desired summer temperature and ensures air renewal throughout the home.
The special motorised shutters ensure comfort in every single room.

With the aid of smartair, it‘s possible to ‘communicate‘ with the dehumidifying air conditioner and at the same time control opening and closing of the motorised shutters..

Operation of the DCA dehumidifying air conditioner

Dehumidification performance is achieved through a system of heat exchangers and a chilled water coil. The incoming air is initially chilled in an air-to-air exchanger which reduces the temperature of the air to about 6°C, approaching dew point conditions. The thus pretreated air can then be dehumidified simply by using a chilled water coil at a temperature of about 12°C. Making an analogy with a traditional dehumidifier with a refrigeration cycle, the combination of the two exchangers replaces the effect generated by the evaporator, allowing the same dehumidification capacity as with a refrigeration cycle but with considerable savings in electricity consumption due to the absence of a compressor.

The temperature of the air at the outlet of the exchanger is about 1.5°C higher than the input temperature of the cooling liquid. The air at this point may be too cold to be put back into the room without causing thermal shock (split effect) and is therefore heated in an air-to-air exchanger, absorbing heat from the input air (about 6°C). Continuing with our analogy with a refrigeration cycle, the exchanger represents the condenser, with the advantage that, in this case, the heat produced by the compressor doesn‘t have to be dumped.

Input water at 11.5°C

Room temp. R.U. 55% R.U. 60% R.U. 65%
25°C 18.3 23.1 26.7
26°C 21.2 27.1 34.2

Input water at 10.5°C

Room temp. R.U. 55% R.U. 60% R.U. 65%
25°C 20.5 25.5 30.0
26°C 24.2 30.4 37.5

Input water at 12.5°C

Room temp. R.U. 55% R.U. 60% R.U. 65%
25°C 16.0 20.8 24.2
26°C 18.5 24.7 31.0

Airflow and noise at different fan speeds and different compressions

Airflow for different back pressures
Back pressure: 10 Pa 10 Pa 10 Pa 10 Pa
Fan speed / dB(A)
Speed 2 / 26 dB(A) 240 220 - -
Speed 3 / 30 dB(A) 270 240 220 180
Speed 4 / 32 dB(A) 330 300 250 220
Speed 5 / 35 dB(A) 350 320 310 260
Speed 6 / 37 dB(A) 400 350 340 300

Variation in performance (condensed water) with varying airflow

Coefficient of Variation in performance with varying airflow
Airflow: 200 m3/h 250 m3/h 300 m3/h 350 m3/h
Coeff. Perform. 0.88 0.95 1.00 1.05

Lifetime warranty!
Assicurazione ITAS a vita su tutti i prodotti Eurotherm

Eurotherm radiant systems are now more secure than ever with our life long warranty. Eurotherm has extended its warranty for original defects or faults to the lifetime of the radiant system on all products in the range.


  • Insurance without time limit on all Eurotherm products for fabric, manufacturing, assembly and/or design defects, regarding unintentional damages caused to third parties.


  • Third-party liability for all installation and maintenance works carried out by Eurotherm specialist staff.