Ventilation It’s all in the design

As Mechanical Ventilation with Heat Recovery (MVHR) systems grow in demand, what advice should wholesalers give to customers who are keen to install MVHR but don’t know how to specify the technology? Christian Rehn, National Design and Project Manager of National Ventilation, explains how ventilation system design can be made simple.

the ventilation system of choice for new builds, now is an ideal time for electrical wholesalers to work with small to medium-sized contractors to help them grow their ventilation businesses by taking advantage of this developing market. But when it comes to new build ventilation


projects, contractors will need to be familiar with the design and specification of whole house ventilation technologies, such as MVHR. The only hurdle is that specialist knowledge of the equipment or software programmes is often needed to correctly calculate the pressure in the system over a given length of ducting. So what can wholesalers do to help their customers? Lending a helping hand to your customers

may make a big difference as to whether a contractor wins or loses a job. Ventilation

echanical Ventilation with Heat Recovery sales are on the rise. And with MVHR increasingly

design and specification may be daunting for some contractors who may not know where to start when asked to design an MVHR system – which could potentially lose them the business. Fortunately, there are design services

available, such as the free service that National Ventilation provides, to help electrical contractors secure these projects and grow their business. Through its close relationship with electrical wholesalers, National Ventilation specialises in offering a free design service for self-build and design & build projects to help contractors win business they might otherwise have walked away from. National Ventilation assists electrical wholesalers by sending them all the necessary information that’s needed for their customers to help them with their ventilation system design. Wholesalers can then supply their customers with a full design and quotation including unit calculations, a full kit list as well as recommended duct routes, making the process simple for wholesalers and customers alike.

Design and specification To help generate sales of MVHR it is also useful if electrical wholesalers are familiar with the simple steps needed to design and specify a ventilation system so that customers know what is entailed. The first step in designing a ventilation

system is for the contractor to obtain project drawings from the architect or developer and supply these to their wholesaler. This is then passed onto National Ventilation to enable them to specify the correctly sized

With MVHR becoming increasingly popular for new builds, it’s an ideal time for electrical wholesalers to work with contractors to help them grow their ventilation businesses.

ventilation unit and the correct type and lengths of ducting – whilst ensuring it meets Building Regulations. Using the architect’s drawings, property details are input into an airflow calculator. This will include the dimensions and types of rooms in the property so that the MVHR system can meet the airflow demands of each room. Once the total airflow figure has been calculated an MVHR unit can be selected to meet this need.

To help generate sales of MVHR it is

The ventilation design needs to consider where best to locate the MVHR unit, risers and ducting.

useful if electrical wholesalers are familiar with the simple steps needed to design and specify a ventilation system so that customers know what is entailed.

●Continued over April 2018 electrical wholesaler | 37

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