These systems can be used as an alternative to PPFV systems. A PEV system extracts air from an internal space. The extracted air is replaced by fresh air from an open window, a fixed vent or via the natural gaps/cracks in the building envelope – eg around window sills, under doors etc.
A PEV system will typically be timer controlled and is a cheaper, less sophisticated solution for solving indoor air quality issues in spaces unaffected by draft – eg basements and storage rooms.
PEVS’s are a great solution for weekenders and holiday homes that are often unoccupied for extended periods of time. These systems are also suitable for those “spare rooms” in many homes.
The key downsides of PEV’s are:
- No filtration
- Energy loss (heating and cooling)
- Seasonal adjustment required to run times.
The key upsides of PEV’s are
- Simple, lower install cost
- Low running cost
- No ongoing services costs
- Long warranty and system life expectancy
The most common mistakes from poorly specified PEV’s are noise, aesthetics and poor installation.
inAIR can provide a custom range of PEV’s for any sized project with a wide selection of fan types, diffusers and automation controls.