Compare the Costs
The C-90B vs.
Don't let the initial price tag fool you. Yes, the C-90B
will cost more to purchase than many competing products.
But how much does it cost to actually USE those other
Let's pretend you bought a Friedrich C90B (rated at
CADR) for $529.00, and you bought a popular
HEPA-filtered air cleaner (rated at 225 CADR) for $219.
Now, pretend you ran each unit on the medium fan setting
for 24 hours per day for five years.