Is there any warranty for Caire FreeStyle® Comfort Oxygen Concentrator?

Yes, the warranty on the Caire FreeStyle Comfort Oxygen Concentrator is excellent. It comes with a 3-year warranty that also covers the sieve beds. This is the first unit on the market where the warranty also covers the sieve beds, and this can save you hundreds of dollars during the 3-year warranty. They also cover the batteries and power supplies with a 1-year warranty.