What is MVHR?
Mechanical Ventilation with Heat Recovery (MVHR) is a whole-house ventilation system that provides fresh, filtered air to a building while also recovering heat from the outgoing air. This helps to improve indoor air quality and reduce energy costs.
How does MVHR work?
MVHR systems use a heat exchanger to transfer heat from the outgoing air to the incoming air. This means that the incoming air is preheated before it is supplied to the building. This can significantly reduce the amount of energy needed to heat the building in the winter.
What are the benefits of MVHR?
The benefits of MVHR include:
Improved indoor air quality: MVHR systems provide a constant supply of fresh, filtered air to a building. This helps to reduce pollutants such as dust, pollen, smoke, and volatile organic compounds (VOCs).
Reduced energy costs: MVHR systems can recover up to 95% of the heat that would otherwise be lost through ventilation. This can significantly reduce heating costs in the winter and cooling costs in the summer.
Reduced condensation and mould growth: MVHR systems can help to control humidity levels in a building. This can reduce the risk of condensation and mould growth, which can cause damage to the building and lead to health problems.
Improved comfort: MVHR systems can help to create a more comfortable indoor environment by providing a steady supply of fresh air and preventing draughts.
Is MVHR suitable for all buildings?
MVHR is most suitable for energy-efficient buildings that are well-insulated and airtight. It may not be as effective in older buildings with poor insulation or a lot of air leakage.
How much does MVHR cost?
The cost of MVHR installation varies depending on the size and complexity of the system. However, the long-term benefits can outweigh the initial cost.
Can I install an MVHR system myself?
MVHR systems should only be installed by a qualified professional with experience in ventilation systems.
How much energy can MVHR save?
MVHR can recover up to 95% of the heat that would otherwise be lost through ventilation. This can significantly reduce heating costs, especially in well-insulated homes. According to the Energy Saving Trust, MVHR systems can save homeowners up to £200 per year on their energy bills.
How does MVHR affect humidity levels in a building?
MVHR systems can help to control humidity levels in a building by regulating the amount of moisture in the incoming air. This can improve indoor air quality and reduce the risk of condensation and mould growth.
Additional information
MVHR systems can be used in conjunction with other renewable energy technologies, such as solar panels and air source heat pumps, to create a highly energy-efficient home.
MVHR systems can also be used in commercial and industrial buildings, such as schools, hospitals, and offices.
MVHR systems are becoming increasingly popular in the UK, as the government is committed to reducing carbon emissions and improving energy efficiency.
Conclusion
MVHR is a ventilation system that offers a number of benefits, including improved indoor air quality, reduced energy costs, reduced condensation and mould growth, and improved comfort. It is most suitable for energy-efficient buildings that are well-insulated and airtight.