Technical directory · Filtration
Washable furnace filters
Some reusable filters can be washed while others require replacement; a wet filter must not go back into the air stream.
What to observe
Identify the manufacturer's cleaning and drying instructions for the exact filter model.
A field example
A reusable screen returned while damp can introduce water into the cabinet. Drying time and media condition are part of the service; warped frames or torn material call for the maker's replacement procedure.
What the written work should say
The job includes inspecting damage to frames and media, drying completely and reinstalling in the correct airflow direction.
Where this task stops
Do not wash disposable pleated media or assume a reusable screen performs like a high-efficiency filter.