Return air
Definition to come.
Where it comes up
- Air filters and air cleaners
Furnace filters, MERV ratings, changing filters and what air cleaners can do
- Your home's system as a whole
How heating, cooling, air and controls fit together in one home
- Airflow and ducts
Supply and return, static pressure, leaky ducts and when duct cleaning helps
- Care all year round
Filters, humidity, exhaust fans, dryer vents, open registers and regular upkeep