New NHBC Report Steers Market Towards MVHR

Xpelair welcome the latest report from the National House-Building Council (NHBC) that aims to define the causes of overheating in homes, strengthening the case for the wider adoption of Mechanical Ventilation with Heat Recovery (MVHR) solutions.

The study, Understanding Overheating – Where to Start, examines the causes of overheating within new builds, partly concluding that increased tightening of the building envelope through the use of additional insulation and double-glazing has resulted in properties often having little or no natural ventilation.

Whilst in the winter it may be an advantage that the home retains more heat and consequently reduces heating bills, in the summer it can drastically affect the comfort and wellbeing of inhabitants. Where the combination of traditional ventilation and natural ventilation may not be sufficient to appropriately ventilate new build properties, the study calls for ‘purge’ ventilation such as MVHR to be implemented.

Steve Mongan, Head of Marketing at Xpelair commented: “This new research throws the focus on the importance of ventilation once again, especially in terms of making a home healthy and comfortable for inhabitants.

“MVHR systems have the ability to effectively ventilate homes that have tighter envelopes providing users with fresh, clean air and ensuring a comfortable environment.

“Xpelair has championed the widespread implementation of these systems for many years as they are highly efficient and provide excellent ventilation all year round and we are glad that this research has once again highlighted the benefits of MVHR systems.”

MVHR systems are designed to continuously extract polluted air from a home whilst passing the air over a heat exchanger and transferring the heat to the incoming air. This simultaneously supplies fresh, filtered air into the habitable rooms of a home, creating a balanced airflow throughout the dwelling. The systems are able to recover up to 95% of the heat that would otherwise be lost, reducing heating costs and easing environmental pressures.

With building envelopes becoming increasingly tighter, the need for superior ventilation is essential for providing end users with optimal indoor air quality (IAQ) but also to protect the fabric of a property and counteract excess condensation and mould growth in new builds where the tighter envelope increases the probability of both.

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