Avoid in North Miami
- Filtering through MERV-13 in older homes without checking blower capacity — high-MERV filters can starve small blowers.
- Pet-owner shortcuts — vacuuming alone doesn't capture what reaches the cold-air return.
- Cheap fiberglass batt patches on old duct insulation — fibers shed.
- Forgetting the dryer vent during family-home cleanings — kid laundry volume is high.









