I recently underwent the process of returning my HerbalAire to the manufacturer, and the entire experience has left me thoroughly unimpressed.
After several e-mails were exchanged between us, detailing the problem (my unit emits an extremely
loud buzzing / ticking / humming noise from the bottom window where the LEDs can be viewed) this is the conclusion that was come to:
Thank you for providing that additional information, it sounds like the transformer on the circuit board is causing the "humming" noise you are referring to you [sic]
For anyone looking to contact them, I would suggest using the contact form on their website as opposed to e-mailing them directly. I never got an answer from any of the e-mails I sent directly to their address.
I sent my unit back to them, and was unimpressed that it sat in their Post Office box for
6 and a half days before they retrieved the package. In fact, after e-mailing them the tracking number and being told...
Thanks.
Everything will be taken care of on Monday.
... it still sat in their Post Office box until late Tuesday afternoon.
I received my "repaired" unit today, and it exhibits the exact same behaviour as it did upon being returned: an extremely loud buzzing noise that can be heard from across the room when the heater kicks in. It is about as loud as a cellular phone on vibrate. I am guessing they simply swapped out the transformer they assumed was the culprit, and never bothered to turn the unit on :S.
@MG23 - I am also
still seeing green bits in my denatured product, as you have been witness to in the past. When I discussed this with them through e-mail their attitude was essentially that if the LEDs indicate it is reaching optimal temperature, then it
absolutely is, but I am not convinced that this is the case.
Any help would be greatly appreciated, as I am nearing the end of my patience.