UPDATED on January 24, 2018
It’s time once again to take a look at a few interesting new building products. I recently spotted two potentially useful ventilation products — a new type of ERV and a fan for ventilating small rooms — and two products that are destined for attics — an insulating “hat” for recessed cans and a ventilation baffle that can be installed between rafters. I will also report on JointSealR, a tape distributed by Owens Corning for taping XPS seams.
An ERV for hot, humid climates
Air Pohoda, a ventilation products manufacturer headquartered in the Czech Republic, has established a new distribution network in the U.S.
[Editor’s note: As of January 2018, GBA has learned that Air Pohoda products are no longer being distributed in the U.S.]
Air Pohoda manufactures HRVs as well as ERVs. The manufacturer claims that two of its products — the Ultima240E ERV and an add-on module called the Cool Breeze — are particularly appropriate for hot, humid climates.
The Ultima240E ERV is rated at 240 cfm. It is the first ERV that allows users to set a desired indoor humidity level. According to the manufacturer, the ERV is capable of adjusting the amount of moisture that is transferred between the two air streams (the exhaust air stream and the supply air stream) to meet a desired humidity target.
While other ERV cores have membranes that allow moisture to pass through the membrane and be transferred from one air stream to another, the passageways of the ERV core of the Air Pohoda core are made of a type of plastic that will not allow moisture to pass through the walls of the passageways. Instead, the machine reverses the direction of its exhaust and supply air flows periodically, so that the moisture that has condensed and accumulated…
Get building science and energy efficiency advice, plus special offers, in your inbox.