For the past 50 years, engineers have been “designing” duct systems. Quite often, they were not actually designing the systems, but were sizing duct the duct according to some rule of thumb. The rules ...

Supply flow into an occupied space is generally a mixture of return air and fresh outdoor air that has been filtered and then conditioned through heating or cooling coils. This volume of supply air ...

Saving time and cost while delivering a superior solution – those were the qualities that earned PanelDuct the overall Irish Times Innovation Award for 2015. The company's novel ventilation ducting ...

In the last blog, I looked at the fundamentals of mechanical ventilation and heat recovery and this week I'll be looking specifically at the system that we are installing in the Denby Dale Passivhaus.