Three Types of Filters that Help your Zehnder HRV to Keep Indoor Air Clean

From the moment outside air enters the system, a Zehnder system (and its filters) are designed to keep air contaminants from entering your home, while efficiently recovering heat (or cooling) from the air exiting your home. Do you know every level of filtration available to you for your Zehnder recovery ventilator? If you’ve recently installed one of these units, or purchased a house that included one already, you hopefully know…


Small Planet Supply renews as a Platinum Sponsor

Small Planet Supply is a North-American company that provides high-performance building products.  They are dedicated to the mission of creating both classic and modern high-performing buildings, including those designed and built to both Zero Net Energy and Passive House standards. In addition to supplying high-performance building products and systems they provide education, and training in the use of energy-efficient building materials and practices. Small Planet Supply is passionate champion of the…


Passive House Air Quality

Passive House buildings rely on a constant supply of filtered fresh air, provided by a heat or energy recovery ventilator (HRV/ERV). Fresh air is delivered to the primary living areas, and stale air is exhausted from the “wet” areas—bathrooms, kitchens, and laundry rooms. (Note—the kitchen exhaust is not a replacement for a properly-sized range hood.) There are several important characteristics of this equipment: Fresh air is delivered and stale air…


Passive House Residential Ventilation in California

Passive House residential ventilation seems like a fairly straightforward topic on the surface. You install a whole-house heat-recovery ventilator (HRV) or energy-recovery ventilator (ERV), exhausting stale air from the wet areas of the house and supplying fresh air to the primary living and sleeping areas. (I’ll use the term HRV to represent both types of equipment throughout the remainder of this article). Unfortunately, the Passive House design guidelines don’t always…


HRV and ERV for Passive House Applications

Heat Recovery Ventilation (HRV) and Energy Recovery Ventilation (HRV) for Passive House applications will provide information about how HRVs and ERVs play a central role in Passive House construction. Information will be provided to enable learners to achieve the following learning objectives: Describe the role of HRVs or ERVs in Passive House construction and how it contributes to energy-efficient design Identify how system components contribute to the performance of an…