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Blauberg KOMFORT EC D5B 180 S21

Heat and energy recovery air handling unit. Maximum air flow up to 220 m³/h.
EAN codeEAN4058448055157
  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Designation key
  • Accessories
  • Dimensions
  • Additional characteristics

Air handling units for efficient supply and exhaust ventilation in flats, houses, cottages and other buildings.Heat recovery minimizes ventilation heat losses during cold season and reduce air conditioner load during hot season.Controllable air exchange for creating the best suitable indoor microclimate.Compatible with round Ø 150 mm air ducts.


The casing is made of expanded polypropylene (EPP) 15–30 mm thick with high heat- and sound-insulating properties.The spigots are located at the side of the unit and are rubber sealed for airtight connection to the air ducts.



High-efficient external rotor EC motors and centrifugal impellers with forward curved blades are used for air supply and exhaust.EC motors have the best power consumption to air flow ratio and meet the latest demands concerning energy saving and high-efficient ventilation.EC motors are featured with high performance, low noise level and totally controllable speed range.Dynamically balanced impellers.


Two built-in G4 and F7 filters provide efficient supply air filtration.The G4 filter is used for extract air filtration.


The KOMFORT EC D5(B) 180 unit is equipped with a plate counter-flow polystyrene heat exchanger for heat recovery. The unit condensate is collected and drained to the drain pan under the heat exchanger.The KOMFORT EC D5(B) 180-E unit is equipped with an enthalpy plate counter-flow heat exchanger for energy (heat and humidity) recovery. Due to humidity recovery condensate is not generated in the enthalpy heat exchanger.The air flows are completely separated in the heat exchanger. Thus smells and contaminants are not transferred from the extract air to the supply air.Heat recovery is based on heat and/or humidity transfer through the heat exchanger plates. In the cold season supply air is heated in the heat exchanger by transferring the heat energy of warm and humid extract air to the cold fresh air. Heat recovery minimizes ventilation heat losses and heating costs respectively.In the warm season the heat exchanger performs reverse and intake air is cooled in the heat exchanger by the cool extract air. That reduces operation load on air conditioners and saves electricity.


The KOMFORT EC D5B 180(-E) models are equipped with a bypass which can be opened if there is a need to cool down the ventilated area with cool intake air.


The KOMFORT EC D5B 180(-E) S21 units are equipped with a integrated automation system. The remote control panel is not included in the delivery set (sold separately). The S21 controller allows integrating the unit into the Smart Home system or BMS (Building Management System). Unit control via Wi-Fi using the mobile application Blauberg AHU.

the Blauberg AHU
app for Android

the Blauberg AHU
app for iOS

The KOMFORT EC D5B 180(-E) S14 units are equipped with an integrated automation system and an S14 wall mounted sensor control panel with LED-indication. The KOMFORT EC D5 180(-E) S2 units are equipped with
a CDT E/0-10 speed regulator.


The units are designed for suspended ceiling mounting, vertical or horizontal wall mounting.Sufficient service access for maintenance and filter replacement must be provided.

Functions KOMFORT EC D5B 180(-E) S21 KOMFORT EC D5B 180(-E) S14 KOMFORT EC D5 180(-E) S2
Unit control via Wi-Fi using the mobile application +
Unit control via remote control panel
S22 control panel (option)
S14 control panel
CDT E/0-10 speed controller
Unit control via remote wireless control panel
S22 Wi-Fi control panel (option)
Unit control via a wired remote LCD control panel
S25 control panel (option)
BMS (Building Management Systems) RS-485
Blauberg Cloud Server service +
Speed switch + + +
Filter replacement indication by filter timer by filter timer
Alarm indication full alarm description in the mobile application LED indication about alarms
Week scheduled operation +
Bypass automatic
manual manual
Timer +
Boost mode +
Fireplace mode +
Freeze protection using cyclical stops of the supply fan using cyclical stops of the supply fan using cyclical stops of the supply fan
using preheating (option)
Reheater connection option
Cooler connection option
Minimum supply air temperature control +
Humidity control option option
CO2 control option option
VOC control option
PM2.5 control option
Fire alarm sensor connection option option
Option: the functionality is available when purchasing the appropriate accessory (see the "Accessories" section)
Parameter KOMFORT EC D5B 180 S21 Measurement unit
Bypass yes -
Voltage 230 V
Phase 1 ˜
Frequency 50/60 Hz
Power 87 W
Total unit current 0.71 A
RPM 2200 min-1
Maximum air flow 220 m³/h
Maximum air flow 61 l/s
Sound pressure level at a distance of 3 m 33 dBА
Temperature of transported air -25…+40 °С
EC motor yes -
Insulating material 15-30 mm, EPP mm
Extract filter G4 -
Supply filter G4, F7 -
Heat recovery efficiency 86-98 %
Heat exchanger type counter-flow -
Heat exchanger material polystyrene -
Connected air duct diameter 150 mm
Weight 14 kg
Casing material EPP -
Type Supply and exhaust -
SEC class A+ -
Mounting ceiling mounting, wall mounting -
ErP 2016, 2018 -
Capacity diagram
Capacity diagram
  • Selection method:
  • Air capacity:
  • Pressure:
Operating point
  • Air capacity: --
  • Pressure: ---
Documents archieve
Documents archieve
Select a document type
  • Catalogues
  • Technical documentation
  • Certificates
KOMFORT EC D5(B) 180 - data sheet (pdf 1.18Mb)
KOMFORT EC D5(B) 180(-E) - user's manual (pdf 2.84Mb)
KOMFORT EC D5(B) 180(-E) S21 - image (png 277.35Kb)
KOMFORT EC D5B 180 S21 - energy label (pdf 130.79Kb)
KOMFORT EC D5B 180 S21 - specification (pdf 80.05Kb)
S21 - user's manual (pdf 2.2Mb)
Modbus table for connecting S21 automation to BMS - user's manual (pdf 140.84Kb)
Filters maintenance manual (pdf 3.04Mb)
Designation key
Designation key
Series Motor type Spigot orientation Casing modification Bypass Rated air flow [m³/h] Heat exchanger type Control
KOMFORT EC: electronically commutated motor D: suspended mounting, horizontally directed spigots 5: EPP _: without a bypass

B: integrated bypass
180 _: heat recovery

–E: energy recovery


    KOMFORT EC D5B 180 S21
G4 panel filter FP 214x186x18 G4
F8 panel filter FP 214x186x48 F7
Control panel S22
Wi-Fi control panel S22 Wi-Fi
LCD control panel S25
Internal humidity sensor FS2
Humidity sensor HR-S
CO2 sensor with indication CD-1
CO2 sensor CD-2
VOC sensor DPWQ30600
CO2 sensor DPWQ40200
Humidity sensor DPWC11200
Electrical preheater EVH 150
Electrical reheater ENH 150
Syphon kit (for the units without an enthalpy heat exchanger) SFK 20x32
Air damper VKA 150
Electric actuator LF230

Model Dimensions [mm]
Ø D Ø D1 B B1 B2 B3 L L1 L2 H H1 H2
KOMFORT EC D5B 180 S21 150 19 650 600 326 163 900 1009 302 264 250 38
Additional characteristics
Additional characteristics
Point Unit power [W] Sound pressure level at 3 m (1 m) [dBA]
1 77 33 (43)
2 64 33 (43)
3 53 32 (42)
4 31 29 (39)
5 30 28 (38)
6 26 27 (37)
7 14 23 (33)
8 13 21 (31)
9 12 19 (29)


Sound power level, A-weighted Total Octave frequency band [Hz] LpA 3 m LpA 1 m
63 125 250 500 1000 2000 4000 8000
LwA to supply inlet [dBA] 59 27 46 54 55 53 48 44 35    
LwA to supply outlet [dBA] 60 27 46 54 55 53 49 44 35    
LwA to exhaust inlet [dBA] 55 25 41 50 51 44 42 39 30    
LwA to exhaust outlet [dBA] 55 26 41 51 51 44 42 39 31    
LwA to environment [dBA] 54 18 36 47 49 48 43 37 33 33 43

* Data provided for point 1 of the air flow diagram



Exhaust spigot configuration Air flow rate [l/s] Specific fan power [W/l/s] Heat exchange efficiency [%]
Kitchen + 1 additional wet room 21 0.90 88
Kitchen + 2 additional wet rooms 29 1.00 86
Kitchen + 3 additional wet rooms 37 1.20 85


Calculation of air temperature downstream of the heat exchanger:
t = toutd + khr × (textr - toutd) / 100,

where toutd – outdoor air temperature [°C] textr – extract air temperature [°C] khr – heat exchanger efficiency (according to the diagram) [%]

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