Walmart has one by Medisana - Home Health Care.  Excellent little machine. 
After using it, I bought another as a spare.  Check for prices at different 
retailers.

http://www.medisanausa.com/products/humidifier.aspx



panamp...@aol.com wrote:     Jim, could you tell me where you bought your 
"ultrasonic"
 device an how much?  I had bought my last one a few months back at  Walgreens 
for $10 as they were fazing
 those small ones out.   I gave my original humidifier to my
 lovely mother-in-law who will be 90 yrs next Mon.. It has helped her  
immensely with her breathing problems.  Pete



      Regards,
  
  Carol Ann
   
     _______________________________
 God is what you can find in anything you look at if you look long enough.




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