Is the VFD hiding a dirty filter?
Polar Dynamix experts explain how variable frequency drives can mask dirty filter problems in HVAC systems. Clogged filters increase energy demand, but VFDs may hide this signal from operators.
Can a VFD hide a dirty filter in my HVAC system?
HVAC technicians may be misdiagnosing or overlooking dirty filters in VFD-equipped systems, leading to higher energy use and equipment wear for their clients.
Key takeaways
- VFDs can mask the energy spike that usually signals a clogged filter in HVAC systems.
- Dirty filters increase energy demand, but VFD-equipped systems may not show obvious warning signs.
- Technicians should not rely solely on energy readings when diagnosing filter condition.
- A modelling study by Polar Dynamix was used to illustrate the filter-VFD relationship.
Related
Saharan ants inspire cooling breakthrough
Hong Kong firm i2Cool developed passive radiative cooling tech inspired by Saharan silver ants. Founded in 2016, the company now offers products aimed at reducing heat in built environments.
Why it matters: Builders and HVAC trades may see new passive cooling materials enter the Australian market, potentially affecting insulation and cooling system choices.
A TV reno show we can relate to
A new renovation TV show focuses on energy efficiency, thermal comfort and passive performance rather than high-end aesthetics. It takes a science-based approach to home improvement.
Why it matters: Builders and trades involved in retrofits may see increased client interest in energy-efficient upgrades and passive design principles.
IAQ26: That's a wrap
AIRAH held its Indoor Air Quality Conference (IAQ26) in Cairns, gathering industry experts and advocates focused on improving healthy indoor environments.
Why it matters: HVAC technicians and builders may see evolving standards and expectations around indoor air quality affecting how they design and install systems.