Hello Peter,I am Dr. Arun and will be helping you today.The infra red heater cannot be completely safe in long term and should be avoided. There are no controlled trials but there is a potential hazard in the long term exposure. So it would not be recommended. Please read these guidelines by
;http://www.icnirp.de/documents/infrared.pdf Please feel free for your follow up questions.
I would be happy to assist you further, if you need any more information.
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