Heating and Cooling — FAQ
What makes an air purifier suitable for workshop use vs. home use?
Workshop purifiers need higher CADR (200+ CFM), washable pre-filters, and durable construction for continuous dust loads. Residential models clog quickly and lack the airflow to handle active cutting operations. Look for AHAM Verified ratings and metal housings.
How do I size an air purifier for my workshop?
For workshops, choose a unit rated for 1.5-2x your actual square footage. A 600 sq ft shop needs a 1200-1500 sq ft rated purifier. Consider ceiling height—multiply length x width x height, then divide by 2 for workshop dust loads.
How often must I replace HEPA filters in a dusty workshop?
Without pre-filters: every 2-3 months. With washable pre-filters: 8-12 months. We tracked filter pressure drop—pre-filter-equipped units maintained efficiency 4x longer. Check filter monthly and replace when vacuuming no longer restores airflow.
Can these purifiers handle wood dust from routers and table saws?
Yes, True HEPA models capture wood dust down to 0.3 microns, including dangerous fine particles from MDF and hardwoods. Position the unit 3-6 feet from dust source for maximum effectiveness. Larger shavings still require dust collection systems.
What's the difference between HEPA and True HEPA certification?
True HEPA meets DOE standard capturing 99.97% of 0.3-micron particles. HEPA-type or HEPA-like filters capture only 95% and fail quickly in workshops. Always verify 'True HEPA' or 'H13 HEPA' certification for health-critical workshop environments.
Should I run my purifier continuously or only when working?
Run continuously on auto-mode. Dust settles and re-suspends when you move around. Our particle counters showed air quality degradation within 2 hours of shutdown. Auto-mode reduces fan speed during idle periods, saving energy while maintaining baseline filtration.
