Page 43

Building Products March 2018

properties requiring acoustic measures, as there is no requirement to open windows. For example, for homes located near busy roads or airports. One of the main requirements with a ventilation system is to ensure it is correctly sized. If it is undersized, it could lead to under performance of the unit and noise issues. This is the reason why we work closely with specifiers at design stage to ensure that new homes can meet the requirements for both ventilation and air tightness. Correct installation is also essential with MVHR systems to ensure their effectiveness. Since 2010, revisions to building regulations Part F meant domestic ventilation became notifiable work, requiring ventilation provision to be installed by a competent and qualified person. It is vital that the installation of any domestic ventilation system is correct and meets the minimum requirements set out in regulations and standards. More than 90% of faults with ventilation systems are down to poor installation. More installers are therefore becoming NICEIC trained, which means they can work with the latest types of domestic ventilation products efficiently, receiving technical information and advice plus practical support. Smart technology is also making MVHR units appeal more to homeowners and buyers. Apps such as ‘myenvirovent’ offer greater control for the homeowner, as well as speeding up commissioning for the installer. It allows them to connect directly to the unit through the app without the need for a wireless internet connection. They can then access the dedicated installer mode to commission the airflow rates and select additional options in the unit’s ventilation settings page. This makes the whole process much simpler and more efficient. HEATING, VENTILATION AND AIR CONDITIONING Latest generation The latest generation of MVHR systems are highly efficient and can recover more than 90% of the heat that would normally be lost to the outside via trickle vents or extract fans. This energy is then supplied back into the house as warmed, fresh air, ensuring that developers are able to reduce the overall energy requirement of the building. There are obvious benefits to homeowners who are looking to reduce their energy bills. Installing mechanical ventilation systems is the most effective way that the new build sector can meet Part F requirements and improve SAP ratings. The trend towards fitting MVHR systems in new homes therefore looks set to continue as part of improving indoor air quality and achieving compliance. www.envirovent.com Filtration made simple MARCH 2018 | BUILDING PRODUCTS 43 25% of new homes are now being specified with MVHR systems Ventilation manufacturer, Nuaire, has developed new carbon filtration technology designed to simplify the way designers keep air pollution out of the home: IAQ-Valve. According to Nuaire, increased road traffic now accounts for up to 65% of urban environmental pollution, which research suggests claims an estimated 40,000 lives each year in the UK. Annual mean levels of NO₂ near busy roads regularly breach legal levels, leaving people living in homes nearby at risk of developing asthma, lung cancer, heart disease and dementia. Nuaire’s IAQ-Valve is described as a ‘unique style of filtration’ that combines a standard supply air valve with a carbon filter. This combination is designed to simplify the control of air pollutants entering the home, by utilising a standard MVHR supply valve that is part of a ducted ventilation system. With no requirement for an access hatch, Nuaire says ‘specification and design are straightforward, and all the homeowner will see is a discrete, white ceiling valve’. Said to be ‘small but powerful’, the carbon filter valve is reportedly capable of capturing up to 91% of NO₂ and other harmful pollutants. The carbon media held inside a cartridge is microporous and according to Nuaire, has a much larger surface area than its external dimensions suggest. A spoonful of activated carbon equates to the surface of a football field. Through a process known as ‘adsorption’, the pollutants are attracted and held on the surface of the carbon, trapping them before they enter the home. Improving indoor air quality is a driving factor in the design of new products, as Nuaire business development director, Andy Mudie, explains: “IAQValve represents a new type of life-saving technology that simplifies the design and installation of carbon filters. “Removal of pollutants is the most important aim of any carbon filter product, but that must be followed by factors that make specification, installation and maintenance easier. We have considered the end user, designer and contractor in the unique design of IAQ-Valve.” www.nuaire.co.uk/iaq-valve


Building Products March 2018
To see the actual publication please follow the link above