Designing a Mechanical Ventilation with Heat Recovery (MVHR) system is far more than choosing a unit from a catalogue. In the UK, the process is tightly linked to building regulations, SAP assessments, and the unique characteristics of each property.
Professional consultancy ensures your system is compliant, efficient, and designed for the long term.
Why Professional MVHR Design Matters
MVHR systems are integral to modern, airtight buildings. Done well, they reduce heat loss, improve indoor air quality, and support compliance with Building Regulations Part F. Done badly, they can lead to noise complaints, poor airflow, and even building control rejection.
This is why a bespoke design service is critical. It ensures the system is tailored to your property’s layout, occupancy levels, and energy targets, rather than relying on generic assumptions.
The MVHR Design Process
The process begins with a thorough site assessment. This includes analysing room layouts, planned airtightness levels, and potential duct runs. The aim is to spot practical constraints early—avoiding costly design revisions during installation.
MVHR design is closely tied to SAP 2012 (Standard Assessment Procedure). These calculations measure your building’s energy performance and are a mandatory part of compliance. Correct integration of MVHR into SAP can improve your property’s rating while ensuring it meets the ventilation requirements of Part F.
Accurate figures are essential. A consultant will calculate expected heat losses and required air changes per room. This ensures the MVHR system delivers balanced airflow while maintaining thermal efficiency.
One of the most overlooked aspects of MVHR is ducting. Poorly designed ducts create pressure losses and noise. Professional schematics map every duct run, specifying sizes, bends, and insulation. This guarantees smooth airflow and efficient operation.
Not all MVHR units are created equal. Your consultant will recommend a system based on calculated airflow demand, efficiency ratings, and noise performance. Unit placement is also considered—whether in a loft, plant room, or utility space.
FAQs
Off-the-shelf packages don’t account for your building’s unique design. Without tailored ducting and airflow calculations, you risk poor performance, noise, or regulatory non-compliance.
SAP 2012 is the UK’s official method for assessing a building’s energy efficiency. An MVHR system designed around accurate SAP data helps achieve compliance and may improve your EPC rating.
Most designs are completed within 2–4 weeks, depending on the complexity of your project and the stage of build. Early engagement with a consultant avoids delays later in construction.
Why Work With a Professional Consultant?
Professional MVHR consultancy saves money and stress in the long run. From ensuring compliance with Building Regulations Part F, to optimising comfort and energy savings, it’s a service that pays for itself.
Ready to start your project?
Get a free MVHR design consultation today and take the first step towards a compliant, efficient ventilation system.