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Design and supply of MVHR systems for low energy and Passivhaus projects
envirovent supports the design and supply of Mechanical Ventilation with Heat Recovery (MVHR) systems for low-energy and Passivhaus projects. Our wide range of wall and ceiling-mounted MVHR units ensures the right fit for every development. Combining compliance, efficiency, and healthy indoor air quality, we provide tailored solutions that meet project requirements while delivering best practice in residential ventilation.
Developed in the 1990s, Passivhaus is a design and construction standard dedicated to achieving superior thermal comfort and indoor air quality while minimising energy consumption. A certified Passivhaus building typically uses up to 90% less energy than conventional New Builds. In today’s climate of rising and unpredictable energy costs, Passivhaus offers more than an environmentally responsible solution; it delivers significant long-term economic benefits compared with traditional construction methods, making it a future-ready choice for sustainable development.
Key Passivhaus Principles:
Compact building form factor
Highest levels of thermal insulation
Airtightness, n50 pressure test result of <0.6ACH/hr @ 50 Pa
Minimal Thermal bridging
Mechanical ventilation with heat recovery
We offer an extensive range of wall and ceiling mounted MVHR units to suit your needs.
The energiSava® 300, a mechanical ventilation with heat recovery unit, is ideal for residential properties to provide a constant supply of tempered air and maintain stable humidity levels. With maximum airflow capacities of 300 m3/h respectively, the unit is available in left-handed and right-handed versions with a range of options for connecting the ducts.
The energiSava® 400, a mechanical ventilation with heat recovery unit, is ideal for residential properties to provide a constant supply of tempered air and maintain stable humidity levels. With maximum airflow capacities of 400 m3/h respectively, the unit is available in left-handed and right-handed versions with a range of options for connecting the ducts.
The high-efficiency SLIMLINE 150, a mechanical ventilation with heat recovery unit, is ideal for ceiling mounted applications such as apartments, properties with a lack of storage space, and student accommodation to provide optimum ventilation.
The high-efficiency SLIMLINE 300, a mechanical ventilation with heat recovery unit, is ideal for ceiling mounted applications such as apartments, properties with a lack of storage space, and student accommodation to provide optimum ventilation
The SABIK 350, a mechanical ventilation with heat recovery unit, has been designed to provide balanced and sustainable ventilation whilst incorporating modular features and user friendly controllability resulting in a highly efficient, market leading ventilation system.
The SABIK 500, a mechanical ventilation with heat recovery unit, has been designed to provide balanced and sustainable ventilation whilst incorporating modular features and user friendly controllability resulting in a highly efficient, market leading ventilation system.
Our specialist design team delivers detailed technical drawings fully compliant with Passivhaus methodology, the latest Building Regulations, and SAP.
Using BIM-compliant Revit design software, we create bespoke ventilation designs tailored to your project. Our service is efficient, providing a design and free quote within 5–7 working days, with progress updates and a fast-track option available
The Trust is an independent non-profit organisation that provides leadership in the UK for the adoption of the Passivhaus standard and methodology. It aims to promote Passivhaus as a highly effective way of providing high standards of occupant comfort and health without compromising on slashing energy use and carbon emissions from buildings in the UK. Improving efficiency is crucial to meeting Climate Action Targets.
Frequently Asked Questions
The Passivhaus Standard is a German building standard prioritising energy efficiency and comfort.
This involves extremely low levels of airtightness in a property, increased insulation and the use of energy efficiency energy sources, including solar, heat pumps and underfloor heating.
Due to the high airtightness levels, heating bills are often low. The Passivhaus Standard is concerned with the use of appropriate building materials to achieve the levels of airtightness required, as well as shading for overheating mitigation and thermal comfort.
As a result of the extremely high airtightness levels, the use of Mechanical Ventilation with Heat Recovery or MVHR is mandatory in a Passivhaus property.
This ensures that there are good levels of both extract and supply ventilation year-round to prevent issues with poor IAQ and ventilation.
The requirements of a suitable MVHR unit are to have a pre-heater for frost protection as well as increased filtration due to the airtight nature of the building.
Yes, enviroVent has several Passivhaus certified products, including the energiSava 300, energiSava 400, Slimline 150, Slimline 300, Sabik 350 and Sabik 500.
It is important to ensure that the correct controls and filters are selected to ensure compliance.
Further details on products can be found on the Passivhaus website under the component register.
