EcoSlim-900 Ceiling-Mounted MVHR Heat Recovery Ventilation System for Commercial and Office Buildings
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User Guides & Data Sheets
- Ultra-slim 318 mm depth – ideal for suspended ceilings and space-limited commercial installations.
- Up to 88 % heat recovery efficiency with durable polymer counter-flow core.
- Quiet operation (33 dB A) and low Specific Fan Power (0.8 W/l/s) for energy-efficient performance.
- Smart Modbus and Wi-Fi control – integrates with BMS or smartphone for easy management.
- Designed for UK Building Regulations Part F & L – supporting low-carbon, compliant ventilation design.
Unlike a Lossnay unit or other MVHR units with paper-based heat recovery cores , the Blauberg EcoSlim-900 mechanical ventilation with heat recovery unit uses a high-efficiency counter-flow polymer heat recovery core and that changes everything.
The EcoSlim-900 transfers heat, not moisture, so fresh air stays fresh, and stale air stays out. Where paper heat recovery units can allow humidity and odours to creep through, the EcoSlim-900 keeps them firmly apart, delivering cleaner, healthier indoor air quality for offices and commercial buildings.
Paper thermal cores absorb moisture. Polymer exchangers do not. Paper breaks down. Polymer lasts. You can wash it, not bin it. That means fewer core replacements, fewer service visits, and cleaner, more reliable energy-efficient ventilation year after year.
MVHR units with crossflow heat exchangers lose valuable energy and waste heat, while those with counterflow cores make it count, allowing longer air contact, up to 88% heat recovery, and far more efficient operation.
The result? Less waste, lower running costs, and better performance. The EcoSlim-900 simply does the job better.
And while others are replacing membranes and chasing efficiency losses, EcoSlim-900 MVHR units just keep running.
No paper to warp, no moisture to manage, no callouts to schedule. Just dependable, high-performance heat recovery ventilation designed for the real world, efficient, quiet, and built for modern commercial environments.
Click below to see data sheets, technical details, user guides and BIM models:
Designed to fit where others don’t.
The Blauberg EcoSlim-900 has been developed for environments where ceiling space is at a premium.
At just 318 mm deep, it’s the slimmest mechanical ventilation with heat recovery (MVHR) unit in its class, making it ideal for installation within suspended ceilings in commercial offices and other applications where the ceiling void is limited.
Its compact form allows it to integrate neatly within standard ceiling grids, providing full heat recovery ventilation without altering room design or reducing head height.
This makes the EcoSlim-900 particularly suited to modern office refurbishments and new-build commercial projects where usable space, visual continuity, and energy-efficient ventilation are priorities.
Available in right-handed and left-handed access versions, it provides installation flexibility for different ceiling layouts and service routes.
Access and maintenance can be carried out easily through ceiling tiles, simplifying both installation and routine servicing.
For specifiers, the result is a simple, space-saving MVHR system that maintains performance standards without compromise. Slim in size, strong in specification.
Click below to see data sheets, technical details, user guides and BIM models:
Unlike paper-based or crossflow ventilation designs, the Blauberg EcoSlim-900 mechanical ventilation with heat recovery (MVHR) system uses a high-efficiency counter-flow polymer heat exchanger that maximises thermal transfer while preventing moisture and odour transfer.
This advanced design ensures that fresh supply air remains uncontaminated, delivering cleaner, healthier indoor air quality for offices and commercial buildings with up to 88% heat recovery efficiency and reduced energy consumption.
The polymer heat exchanger is durable, washable, and long-lasting, unlike paper membranes that absorb moisture and degrade over time.
With fewer core replacements, reduced maintenance requirements, and consistently high performance, the EcoSlim-900 provides dependable, energy-efficient ventilation and clean air year after year, a smarter, more sustainable choice for modern commercial spaces and suspended ceiling installations.
Modbus. The language of smart buildings.
The Blauberg EcoSlim-900 MVHR system is equipped with Modbus connectivity, allowing simple, reliable integration with Building Management Systems (BMS) for smarter ventilation control.
It gives facility teams full visibility and control over ventilation performance directly from a central platform, helping to maintain energy-efficient air management throughout the building.
Through Modbus RTU communication, key parameters such as fan speed, air volume, temperature, and filter status can be monitored and adjusted remotely, ensuring balanced airflow and consistent indoor air quality.
This intelligent control helps optimise performance, reduce energy consumption, and support compliance across commercial offices, education buildings, and managed developments.
For projects where efficiency and accountability matter, Modbus makes the EcoSlim-900 easy to specify, commission, and maintain — seamlessly connecting mechanical ventilation with the wider smart building strategy.
Smart control, simplified.
The EcoSlim-900 MVHR system isn’t just efficient, it’s connected. Built-in Wi-Fi control allows users to adjust ventilation speed, monitor performance, and view system status directly from a phone, tablet, or smart device.
No additional modules. No complicated setup. Just instant access to smarter, more energy-efficient ventilation.
Unlike traditional systems that rely on fixed wall switches or control panels, the EcoSlim-900’s Wi-Fi interface provides complete flexibility for modern offices, apartments, and managed commercial buildings
Users can adjust airflow, set timers, or check filter status from anywhere, keeping ventilation simple, responsive, and accessible.
It’s mechanical ventilation with heat recovery that you don’t have to think about, intelligent, wireless, and ready to integrate seamlessly with smart building management systems.
Key technical performance details.
Airflow: up to 1,030 m³/hour (0.29 m³/s) — delivering balanced mechanical ventilation with heat recovery across commercial offices and modern buildings.
Pressure: up to 500 Pa, maintaining consistent air movement through long duct runs or complex suspended ceiling layouts.
Heat recovery efficiency: up to 88%, achieved through the high-performance polymer counter-flow heat exchanger for superior energy efficiency.
Noise level: as low as 33 dB(A), ensuring quiet operation suitable for open-plan offices, meeting rooms, and education environments.
Specific Fan Power (SFP): down to 0.8 W/l/s, reflecting exceptional energy-efficient ventilation performance.
Electrical supply: Single phase | 3.1 A | 443 W, optimised for reliable, low-power operation.
Insulation: 20 mm rockwool acoustic lining, improving sound absorption and thermal insulation within suspended ceiling voids.
Filters: G4 high-efficiency pleated panel filters, providing long-lasting protection and maintaining air quality over time.
Dimensions that make a difference.
The Blauberg EcoSlim-900 achieves its ultra-slim profile through intelligent, precision engineering.
At just 318 mm deep, this MVHR heat recovery ventilation unit fits comfortably within suspended ceilings, making it ideal for commercial office projects where ceiling voids are limited and every millimetre of space matters.
Rather than reducing overall volume and increasing noise, the design has been optimised by extending length and width — dimensions that are less restrictive within standard ceiling grids.
This careful balance allows the unit to maintain smooth, consistent airflow with low pressure drop and exceptionally quiet operation, while keeping overall depth to a practical minimum.
Dimensions:
D: 250mm (diameter)
B: 1351mm
B1: 1485mm
H: 318mm
L: 1349mm
L1: 1402mm
The result is a compact, energy-efficient ventilation system that’s slim enough to fit where space is tight, yet spacious enough internally to perform quietly and efficiently.
A genuine balance between acoustic comfort, performance, and installation flexibility, the hallmark of well-engineered heat recovery ventilation for modern commercial spaces.
The Blauberg EcoSlim-900 has been developed for the realities of modern construction, where air quality, energy efficiency, and compliance all need to work together.
It delivers the performance expected from a commercial MVHR system while maintaining the slim profile required for today’s architectural and spatial standards.
From offices and education buildings to managed developments and mixed-use spaces, the EcoSlim-900 provides reliable, balanced ventilation and superior heat recovery in a compact, ceiling-mounted form.
Designed to meet the latest UK Building Regulations, including Part F, and Part L, it supports low-carbon building design and helps achieve long-term operational efficiency.
Developed in line with CIBSE ventilation guidelines, it supports low-carbon building design and helps achieve long-term operational efficiency.
Quiet, efficient, and built for the detail that modern buildings demand, the EcoSlim-900 turns engineered ventilation into part of the design, not a compromise.
Sustainable by design.
The Blauberg EcoSlim-900 is built for sustainability as much as performance. Every component has been considered for efficiency, longevity, and recyclability.
Its polymer counter-flow heat exchanger recovers up to 88 % of exhaust heat, reducing the energy needed for heating and cooling across the building.
Low-energy EC fans maintain airflow using minimal power, contributing to reduced running costs and lower carbon emissions over the system’s lifetime.
With washable, long-life components and no paper-based materials to replace, maintenance waste is reduced and service intervals are extended.
Supporting recognised sustainability frameworks such as BREEAM, NABERS and UK Green Building Council, the EcoSlim-900 helps projects achieve stronger environmental performance ratings.
It’s an MVHR system designed for a low-carbon future — efficient, durable, and engineered to help buildings perform better for longer.
1. What is the minimum ceiling void depth required for installing an MVHR system in commercial buildings?
Most commercial MVHR units require a ceiling void depth of around 350–500 mm.
Many modern buildings do not have this much space available, especially during refurbishment projects.
New slimline MVHR models are designed to fit into shallower ceiling voids of around 300–320 mm.
This allows full heat recovery ventilation without lowering ceilings or making structural changes.
2. How do I calculate the airflow (m³/h) needed for offices, meeting rooms, or commercial spaces?
Airflow for commercial buildings is usually calculated based on floor area, occupancy and room function.
Most designers follow guidance from Building Regulations and CIBSE ventilation standards.
A medium to large open-plan office often requires an MVHR unit capable of delivering around 1,000 m³/h.
Units with higher pressure capability are useful for long duct runs and complex layouts.
3. What is the difference between counter-flow and cross-flow heat exchangers in ventilation systems?
Counter-flow heat exchangers allow the supply and extract air to stay in thermal contact for longer.
This gives higher heat recovery efficiency, often between 80% and 90%.
Polymer counter-flow exchangers prevent moisture and odour transfer between air streams.
Cross-flow heat exchangers have a shorter contact path and therefore recover less heat.
Paper-based cross-flow cores can absorb moisture and deteriorate over time.
4. How does a commercial MVHR system help reduce heating and cooling costs?
A commercial MVHR system recovers heat from the exhaust air leaving the building.
This recovered heat is transferred to the incoming fresh air to reduce the load on the heating and cooling system.
High-efficiency MVHR units with up to 88% heat recovery can significantly cut energy use.
Low specific fan power also helps reduce electricity consumption throughout the year.
5. What noise level is acceptable for an MVHR system in office and meeting room environments?
Typical recommended noise levels for offices and meeting rooms range between 30 and 40 dB(A).
Quiet MVHR units can operate at sound levels as low as 33 dB(A).
Acoustic insulation inside the MVHR casing helps reduce breakout noise in ceiling voids.
This makes them suitable for open-plan workspaces and quiet meeting environments.
6. What type of ventilation system is best for improving indoor air quality in commercial buildings?
A balanced mechanical ventilation system with heat recovery is considered the best solution for indoor air quality in commercial buildings.
It continuously supplies fresh filtered air and removes stale, polluted indoor air.
Modern polymer heat exchangers prevent moisture and odour transfer between air paths.
This type of system helps maintain stable temperatures, lower CO₂ levels and cleaner breathing conditions.
7. How often should MVHR filters be replaced in commercial buildings?
Commercial MVHR filters are normally checked or replaced every six to twelve months.
The exact interval depends on building use, outdoor air quality and system running time.
Most commercial units use long-life G4 panel filters designed for extended service intervals.
Washable polymer heat exchangers can reduce maintenance costs and waste over time.
8. What does Building Regulations Part F require for ventilation in non-domestic buildings?
Part F requires commercial buildings to provide adequate fresh air and controlled ventilation rates.
It also covers moisture management, pollutant control and overall indoor air quality.
Mechanical systems such as MVHR help meet these requirements by providing balanced supply and extract airflow.
When paired with efficient fans and heat recovery, they also support Part L energy performance requirements.
9. Why is BMS or Modbus integration useful for commercial ventilation systems?
Integrating ventilation systems with a Building Management System allows remote monitoring and control.
Modbus communication makes it possible to check airflow, filter status, temperature and fan speed from a central point.
This helps building managers optimise energy use and identify faults quickly.
Centralised control is especially useful in large offices, schools or multi-tenant buildings.
10. Are MVHR systems suitable for retrofit or refurbishment projects with limited ceiling space?
Many modern MVHR systems are specifically designed to fit into shallow ceiling voids in older buildings.
This makes them suitable for refurbishment projects where space is limited.
Shallow-profile MVHR units can often be installed without altering ceiling height or structural elements.
This allows existing offices and commercial spaces to be upgraded to modern ventilation standards.
| EAN Number | 5056194055543 |
|---|---|
| Impeller Type | Centrifugal |
| Connection | Wifi connection |
| Motor Type | EC Motor |
| Electrical Supply | 1 Phase 220/250 50/60Hz |
| Maximum Airflow Rate (l/s) | 286 |
| Maximum Airflow Rate (m3/h) | 1030 |
| Energy Rating | A |
| MVHR Options | Summer Bypass |