Good points

Brand: Duco
400 m3/h
Constant pressure control

Duco MVHR unit DucoBox Energy Comfort D400

The DucoBox Energy Comfort D400 is designed for balanced ventilation systems with heat recovery. (System D) The efficiency of the unit is tested according to NBN EN308 and it has a high thermal efficiency of 83% according to EPBD (Belgium).
This smart and quiet ventilation unit, with its various versions and adjustable capacity up to 400m3/h, is the solution for any situation in a covered residential construction.
The unit draws fresh air into the service area and exhausts dirty air. While doing this, it also uses the heat from the air change. While performing this function, it also uses the heat from the exhaust air using the heat recovery section. Thanks to the heat recovery section inside, this unit has great thermal efficiency.
The DucoBox Energy Comfort's demand control results in intelligent and energy-efficient operation. Together with the smart demand control based on CO2 and humidity, the dynamic air distribution filters ensure exceptional efficiency in this compact unit. It helps reduce energy bills!
Thanks to the unique comfort temperature setting principle, you can set the temperature per zone, e.g. 21.5° for the day zone and 18° for the night zone. This provides significantly increased thermal comfort.

Important features

Up to 400m3/h at 200Pa
Compact and energy-efficient unit with very high thermal efficiency of 83% according to EPBD Belgium
72 watts/fan according to EPBD (Belgium)
Energy label A+
Outlet types; 1 x exhaust air (EHA) 1 x fresh air (ODA) 1 x return air (ETA) 1 x supply air (SUP)
Number of ducts: 4 x diameter 180mm
Energy-efficient EC motors and counter-current heat exchanger
Left/right replaceable, 100% software controlled thanks to patented double bypass principle
Condenate drain
Night gain function
Service via integrated LCD display
Automatic adjustment to constant pressure
Adjustment report via Duco Installation App
RF and wired communication, expandable with optional Duco Connectivity Board for REST API (local or cloud) and Modbus TCP (local), both via Ethernet/Wifi
Optional multi-zone valve
Optional C02 and/or RH room RF sensors (max 25 pieces)
Optionally wired sensors for C02 and/or RH (max 50 pcs, if RF sensor "0" is used, max 25 pcs if RF sensors "25" are used)
Optional box sensors (max 2 pcs of different sensors, it is not possible to have 2 CO2 sensors but it is possible to have 1 CO2 + 1 humidity box sensors)
Optional controller and switching contacts
A look at the f_reduction :

With the standard DucoBox Energy Comfort, it is possible to achieve up to 0.56 f_{reduction heat} with the right configuration.

With the optional multi-zone damper and the right sensor configuration of the DucoBox Energy Comfort, it is possible to f_{reduction heat} down to 0.45.

Find different configurations of DucoBox Energy Comfort via "Downloads" DucoBox Energy Comfort -en Plus brochure section of this page.

Optional compact external 2-zone (multi-zone damper):

With external 2-zone control, the house is divided into day and night zones. The zone control works on the basis of CO2 and humidity and ventilates only where and when needed and in the right amount. Zonal ventilation results in maximum energy savings and increased acoustic and thermal comfort.
Discover the 4 advantages of the multi-zone valve:
1. Compact installation
  The multi-zone valves are installed in the supply pipes (D125 or D160) and require only 78 mm of free space. They can be used anywhere in the piping system. The installer can make his own choice based on ease of installation, accessibility, etc.
2. Energy savings
  With zonal ventilation, we do not ventilate the whole house, but only the zones where people are active. Therefore, our systems need to work less hard, resulting in significantly lower energy consumption (40%) of the ventilation unit and heating system.
3. Silent operation
  The reduced rotation of the motor results in significantly quieter operation (30%).
4. Greater thermal comfort
  Thanks to the unique principle of setting the comfort temperature, you can set the temperature per zone, e.g. 21.5° for the day zone and 18° for the night zone. This provides significantly increased thermal comfort.
Do you need a different version?

All the devices below have been tested according to EPBD (Belgium). Each model has a right-hand and left-hand version.
- Duco MVHR unit DucoBox Energy Comfort D325: 325 m3/h - 85% thermal efficiency, 60Watt/fan
- Duco MVHR unit DucoBox Energy Comfort Plus D350: 350 m3/h - 84% thermal efficiency, 59Watt/fan
- Duco MVHR unit DucoBox Energy Comfort Plus D450: 450 m3/h - 81% thermal efficiency, 98Watt/fan
- Duco MVHR unit DucoBox Energy Comfort Plus D550: 551 m3/h - 78% thermal efficiency, 135Watt/fan

Brand	Duco
Category	All MVHR units
GTIN	5425037157476
Manufacturer's item number	0000-4757
Article number	19140138

Specifications

Category code	78
Heat recovery by	Cross-counter-flow unit
Housing material	Plastic
Housing material quality	Expanded polypropylene (EPP)
Material heat exchanger	Plastic
Suitable for wall mounting	Yes
Suitable for ceiling mounting	No
Suitable for floor mounting	Yes
Left/right orientation reversible	Yes
Max. air volume at 50 Pa	400 m³/h
Max. air volume at 100 Pa	400 m³/h
Max. air volume at 150 Pa	400 m³/h
Max. air volume at 200 Pa	400 m³/h
Max. air volume at 250 Pa	368 m³/h
Max. air volume at 300 Pa	340 m³/h
Type of motor	Electronically commutated (EC)
Voltage	230 V
Frequency	50 Hz
Fuse size of the device	20 A
With thermal overload protection	Yes
Electrical connection	Connecting cable with plug with protective contact
Energy efficiency class according to 1253/2014/EU	A
With digital display	Yes
With wired control unit	No
Suitable for wired control unit	Yes
Suitable for wireless remote control	Yes
Supporting protocol for Modbus	Yes
With zone controller	No
Suitable for zone controller	Yes
With heating element	No
With internal humidity (RH) sensor	No
Suitable for (extra) humidity (RH) sensor	Yes
With internal carbon dioxide (CO2) sensor	No
Suitable for (extra) carbon dioxide (CO2) sensor	Yes
Suitable for central heating boiler connection	No
With bypass	Yes
With constant pressure control	No
With constant volume flow control	Yes
Type of frost protection	Other
Nominal duct diameter (min)	180 mm
Nominal duct diameter (max)	180 mm
Connections outdoor air side	Duct end
Connections residential side	Duct end
Residential connection, underside	No
Residential connection, left side	No
Residential connection, right side	No
Residential connection, top	Yes
Roof connection, side	No
Roof connection, top	Yes
Supply filter according to ISO 16890-1:2016	ISO Coarse
Efficiency supply filter according to ISO 16890-1:2016	65 %
Exhaust filter according to ISO 16890-1:2016	ISO Coarse
Efficiency exhaust filter according to ISO 16890-1:2016	65 %
Height	800 mm
Width	756 mm
Depth	583 mm
Weight	31 kg
Energy label	A+
Connection type	connection left right
With enthalpy exchanger	No
Plug type	Type G