An MVHR system is a type of ventilation system that extracts stale, moisture-laden air from a building and resupplies fresh, filtered air while recovering heat from the outgoing air, says EnviroVent. This process improves indoor air quality and reduces heating costs, especially in airtight homes, notes EnviroVent. 

Here's a more detailed explanation:

How it works:

• Heat Recovery: The heat from the extracted air is recovered through a heat exchanger.

• Supply: Fresh, filtered air is supplied to living areas, and the heat recovered from the stale air is used to warm the incoming air. 

1. Extraction: MVHR systems extract stale air from "wet" rooms like bathrooms and kitchens.

Benefits:

• Improved Indoor Air Quality:

  MVHR systems ensure a constant supply of fresh, filtered air, reducing the buildup of pollutants and moisture. 

• Energy Efficiency:

  By recovering heat from the extracted air, MVHR systems reduce the need for heating, leading to lower energy bills and reduced greenhouse gas emissions. 

• Comfort:

  MVHR systems help maintain a comfortable indoor environment by regulating temperature and humidity, according to Cool Runnings. 

• Reduced Condensation:

  By removing moisture-laden air, MVHR systems help prevent condensation and mold growth, says EnviroVent. 

• Suitable for Airtight Homes:

  MVHR systems are well-suited for airtight homes, which are more prone to poor indoor air quality if not properly ventilated. 

Key Components:

• MVHR Unit:

  The central unit that handles air extraction, heat recovery, and air supply. 

• Ductwork:

  A network of ducts that transport air throughout the house, according to EnviroVent. 

• Filters:

  Filters are used to remove dust, pollen, and other pollutants from the incoming air. 

• Heat Exchanger:

  The device that recovers heat from the extracted air and transfers it to the incoming air. 

In essence, MVHR systems provide a smart and efficient way to ventilate homes, improving indoor air quality and reducing energy consumption, according to Vent-Axia. 

 

MVHR is a whole home ventilation system that extracts stale air from the home and brings in fresh, filtered air.