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Komfort Horizontally Mounted MVHR Mechanical Ventilation Unit with Heat Recovery - Built-in Controls - LB-CON

Order before 3pm for next-day UK delivery.
As low as £3,330.00 £2,775.00
 In stock

Model Features:

  • Designed specifically for residential houses that require a loft mounted low noise solution.
  • Full Modbus, smartphone, Bacnet and tablet capability.
  • High airflow rates up to 830 m3/hour (231 l/s) and available with or without electric heater.
  • 40mm acoustically insulated casing that dramatically reduces noise levels.
  • Pure air G4 and F7 pollen and allergy filtration system reducing particulate matter down to PM2.5.

Main Features

Typically Blauberg Komfort LB heat recovery units are used for small and large residential houses, offices and commercial ventilation systems where noise levels are an issue. A 40mm highly acoustically insulated casing is used to significantly reduce noise levels so that quiet, virtually silent continual operation is achieved.

New for 2019 is our smart home control system. This substantial upgrade enables you to program and control indoor air quality from your smart phone or ipad using wifi, or from anywhere in the world using the built-in smart hub and router. All Blauberg EC SB heat recovery units are now fitted with a built-in wireless router offering not just simple operation and control but full BMS Modbus connectivity to any compatible building management system.

Komfort LB Units are also supplied with a pre-wired touch screen LCD programmable controller. The S25 panel enables full functionality, programming, commissioning and fault finding with simple menu driven options.

High levels of filtration can be achieved as both a G4 and F7 filters are included as standard. This higher level of particle filtration cleans out pollen increasing efficiency down to PM2.5. For heyfever and allergy sufferers why not try the H13 HEPA filters for filtering pollen, airborne particles and other small particulate matter down to 0.3 microns.

Two energy saving German EC fans are at the heart of the heat recovery unit, powerful enough to deliver airflow rates up to 83 l/s. This makes Komfort LB units suitable for residential developments such housing projects, student & nursing accommodation, flats, offices and commercial civic installations.

Significant heat and energy is recovered from the dirty moist air as it passed through the heat recovery ventilation unit. Typically, in an air tight house over 90% of heat can be recovered and reused. Using traditional ventilation systems or extractor fans, this recovered energy would normally be extracted outside and wasted.


  • Self-contained MVHR whole house heat recovery unit, designed for mounting in a lofts, attices viod spaces and suspended ceilings.
  • Provides a balanced supply of fresh, filtered, heat recovered air to the living areas, whilst simultaneously extracting stale, moist, odorous air from "wet" rooms.
  • Dramatically reduces the effects of mould, condensation, CO2 build up, VOC's, damp air and odours.
  • Recovers a large percentage of the heat that would otherwise be wasted during conventional ventilation.
  • Full functionalliy of your heat recvoery unit control directly from your smart phone or tablet with a buiit-in wirless router as standard.
  • 5 year Blauberg warranty.
  • Supply and extract airflow rate of up to 83 l/s (300 m3/hour).
  • Summer bypass allowing you to bypass the heat recovery process in the warmer summer months.
  • Easy access, pure air high capacity G4 and F7 filters fitted as standard reducing pollution down to PM2.5
  • Fitted with German Blauberg, low energy EC motors for smooth, silent operation.
  • ERP 2018 and A+ energy rating compliant.
  • Holiday, trickle, boost, and purge speed control options.
  • Optional CO2, VOC and PM monitoring.
  • Low noise, quiet continual operation due to highly acoustically insulated casing.
  • Built-in frost protection.
  • Fault and filter change indication as standard.
  • Can be connected to fire alarm, external airflow dampers and cooling equipment.
  • Designer flush or surface mounted controls.
  • Dual configuration options (can be mounted left or right-handed).

Air handling units for efficient supply and exhaust ventilation in flats, houses, cottages and other buildings. Used to create controlled energy-saving ventilation systems. The heat recovery technology is used to minimize ventilation heat losses. Control of air exchange for creating comfortable indoor microclimate. Compatible with round Ø 160, 200 or 250 mm air ducts.


The casing is made of double-skinned aluzinc panels, internally filled with mineral wool layer 40 mm for heat- and sound-insulation. The casing has mounting brackets with anti-vibration rubber mounts for easy installation. The unit is equipped with service hatches on the side panels for easy maintenance of filters. This design enables the left-hand and right-hand installation of the unit. The spigots are located at the sides of the unit and are equipped with rubber seals for airtight connection to the air ducts.




High-efficient external rotor EC motors and centrifugal impellers are used for air supply and exhaust. The forward curved blades in KOMFORT EC LB(E) 300/LB(E) 400 provide permanent air flow. The KOMFORT EC LB(E) 700 model has impellers with backward curved blades. EC motors have the best power consumption to air capacity 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. The impellers are dynamically balanced.



LB-CONThe KOMFORT EC LB(E)… 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 LB(E)…-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.


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


The KOMFORT EC LBE S25 units are equipped with an electric heater for additional heating of supply air downstream of the heat exchanger. The KOMFORT EC LB S25 units are not equipped with built-in heaters but both a preheater and a reheater can be purchased separately.


The KOMFORT EC LB(E) S25 model is equipped with a bypass which is automatically opened in summer if there is a need to cool down the ventilated area with cool intake air. If the unit is equipped with an electric heater, the bypass is used for freeze protection of the heat exchanger.


Mounting on floor or ceiling with fixing brackets. The correct mounted unit must provide condensate collecting and drainage as well as access to service mounting and filter replacement.


KOMFORT EC LB… S25 units are equipped with an integrated automation system. The remote control panel is not included in the delivery set (purchased separately). The S25 controller allows integrating the unit into the Smart Home system or BMS (Building Management System). The unit can be controlled via the Blauberg AHU mobile application via Wi-Fi.


the Blauberg AHU
app for Android


the Blauberg AHU
app for iOS


Functions KOMFORT EC LB(E) S25  
Unit control via Wi-Fi using a mobile application +  
Unit control via a wired remote control panel
S22 control panel (option)
Unit control via a wireless remote control panel
S22 Wi-Fi control panel (option)
Unit control via a wired remote LCD control panel
S25 control panel
BMS (Building Management System) RS-485  
Blauberg Cloud Server service +  
Speed selection +  
Filter replacement indication by hour meter readings  
by filter clogging differential pressure switch  
Alarm indication full alarm description in the mobile application  
Week-scheduled operation +  
Bypass automatic  
Timer +  
Boost mode +  
Fireplace mode +  
Freeze protection through cyclic stops of the supply fan  
through preheating (option)  
using a bypass  
Reheater connection option  
Cooler connection option  
Minimum supply air temperature control +  
Humidity control option  
CO2 control option  
VOC control option  
PM2.5 control option  
Fire alarm sensor connection option  
Option: function is available when purchasing the appropriate accessory (see the "Accessories" section).
Technical details
Motor TypeEC
Electrical Supply1 Phase 220/250 50/60Hz
MVHR OptionsSummer Bypass
Tax ClassTaxable Goods
Delivery Lead TimeNormal

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Komfort Horizontally Mounted MVHR Mechanical Ventilation Unit with Heat Recovery - Built-in Controls - LB-CON