- News Article
- Ventilation
Types of Ventilation System
Written By Ruth MacEachern01 January 2025
Learn More About Our Ventilation Products
An effective ventilation system is an essential part of any home or property. At EnviroVent, you can find a complete range of ventilation products to help improve your indoor air quality and prevent condensation and mould.
Learn more about our ventilation products:
Atmos® Range
Positive Input Ventilation
Extractor Fans
Other Ranges
In modern, energy efficient homes, there is a lack of natural ventilation so mechanical ventilation systems are needed to achieve the right rates of air exchange in a building. Good ventilation is important for health and wellbeing as well as protecting the fabric of your home.
Atmos®
ATMOS® from EnviroVent is a range of PIV units for the home, that brings fresh filtered air into your home.
After installing ATMOS®, within just 48 hours, you will start to notice the difference to your home.
The benefits of an ATMOS® Home Ventilation System:
Reduces and helps eliminate condensation & mould
Reduces pollutants and allergens
Stops streaming windows
Removes musty odours
Can help ease symptoms for asthma/ respiratory sufferers
Reduces dust mite population
The ATMOS® 10-Year Warranty. All products in the ATMOS® range come with our 10-year warranty.
Book a FREE home survey to find out what product best suits your home and to remove your issues or browse our full range here.
Positive Input Ventilation (PIV)
Positive Input Ventilation or PIV Systems work by drawing fresh filtered air from outside to inside through a unit that is usually installed in a loft. Positive Input Ventilation Systems reduce surface condensation by displacing humid stagnant air with fresh filtered air throughout your whole home.
PIV systems work by using air from outside to slightly increase internal air pressure, which in turn gently forces the stale air out.
PIV systems are recommended when:
✔ You don't want to do a full renovation.
✔ You require a whole house ventilation solution.
✔ You don't want to remove any walls or go back to brickwork.
Positive Input Ventilation (PIV) systems create healthy living environments by supplying filtered air into a property at a continuous rate throughout a property and are our most popular method of whole house ventilation.
These can be either installed in a loft space or on a wall in a flat or apartment. They ensure that a continuous supply of air is supplied into the home to significantly reduce condensation.
Use our product selector to find out what product best suits your home and to remove your issues or view our full range here.
Extractor Fans
Extractor fans are designed to extract stale, polluted, or damp air out of individual wet rooms, such as kitchens, bathrooms, wet rooms, and utility rooms. They reduce humidity levels and prevent condensation.
Without extractor fans, moisture levels in bathrooms and kitchens can build up and cause condensation which can lead to damp and the growth of black mould. The moist, damp air in the wet rooms can also migrate around the rest of the property, causing issues in other rooms.
Extractor fans are required:
✔ To reduce humidity levels in bathrooms, kitchens, and other wet rooms
✔ To prevent the spread of water vapour and food smells from one room to another.
✔ To Maintain good air quality throughout your home.
Most homes will already have extractor fans installed, but over time, if the fans are not cleaned regularly, performance can degrade, and condensation can become a problem. Replacing older, inefficient extractor fans with new models will improve ventilation.
Arrange a survey to find out what product best suits your home and to remove your issues or browse our range of extractor fans here.
Other ranges from EnviroVent:
EnviroVent offer a wide range of ventilation systems suitable for all types of building including a range of silent extractor fans, whole house mechanical extract ventilation systems, and highly efficient ventilation with heat recovery.
Learn more about our full range of products below.
Silent Extractor Fans Range
Designed for wall, ceiling and in-line applications, the models are suitable for WC, bathroom, utility room and kitchen installations.
The extract fans from the SILENT range are the result of a long and meticulous development process by the Research, Development & Innovation Department at EnviroVent, who have patented a new concept; bringing about a revolutionary change in extract fan design to extract the maximum airflow with the minimum noise possible.
MVHR - Mechanical Ventilation with Heat Recovery
Our range of MVHR systems are sophisticated whole home ventilation and condensation control units. The systems work by extracting stale, moisture-laden air from the wet rooms such as bathrooms, WC’s, kitchen and shower rooms, which passes over a high efficiency heat exchange cell before reaching atmosphere. Simultaneously, fresh air is drawn into the unit from outside, and is warmed by the heat exchange cell before being delivered through supply vents into the living, dining and bedroom areas.
Browse Ventilation with Heat Recovery
MEV & DMEV - Continuous Mechanical Extract Ventilation
The MEV systems can be either a whole house centralised unit, or decentralised fan. The centralised MEV systems are typically located in a loft space or hallway cupboard. Multiple ducts run from the unit to the kitchen, bathroom, en-suites and other wet rooms of a property to simultaneously draw moisture laden air from these wet rooms to control humidity levels. Decentralised MEV (dMEV) are individual room fans which operate continuously to draw moisture from either the bathroom, kitchen, utility room or other wet room.
We are here to help
Every property is different and each property has their own ventilation requirements, what works for one won’t necessarily work for the next. It’s very important to ensure that you properly look into the different options, installing a whole house solution may seem daunting but it will also help prevent condensation and mould issues.
EnviroVent offer a free home survey as standard to ensure the correct product is installed. During a free home survey your local expert will assess any condensation and mould problems that you may be facing in your property and take readings of the relative humidity levels throughout the property. All our ventilation specialists are highly trained in carrying out home surveys to identify any underlying problems and make recommendations to ensure the correct solution is provided, all complying with current Building Regulations
Find out more
Avoid condensation damp from becoming a problem in your home. Contact us today to book your free home survey. Our local ventilation specialists can visit your home to identify the causes of condensation and provide advice about the best ways to deal with it. Simply fill in your postcode to find a local expert who can help you.
Meet The Author
Ruth MacEachern
Product Manager
Ruth is recognised for her deep technical knowledge and regulatory insight.
With over 10 years’ experience in the building industry - across sales, planning, supervision and product management - Ruth combines deep regulatory expertise with real-world application. She holds a four-year degree in Building Control, graduating with the highest marks in her class and winning an award for her dissertation.
Ruth has worked closely with Building Control Officers on complex, high-risk projects, including post-Grenfell work, helping interpret regulations and guide compliant outcomes. Today, she plays a central role in Research and Development, shaping products, technical guidance and education across the industry through technical writing, articles for our blog, and webinars.
Passionate about raising standards, Ruth is driven by one goal: Making ventilation clearly understood, properly specified, and taken seriously.
