You need to describe the odor in more detail. Is it a musty smell ? where the pianos in a place that had flooding or water damage ? Is the smell like fire smoke or cigarette smoke ?/ Ozone would not be a good option because of some of the effects it has on materials. If the pianos where in storage or not being used its possible rodents could have gotten in them and done all types of damage including urinating and even dying in there.
As for getting tobacco odors out of pianos I have heard that exposure to sunlight can help. What type of pianos are these ? If uprights its a good idea to remove the topa and bottom panels and air them out. Look for the presence of things in the piano at the same time. Do not rub or try to clean any mold/mildew until you know what it is. Its best to have an experienced piano tech inspect the pianos
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James Kelly
Owner- Fur Elise Piano Service
Pawleys Island SC
843-325-4357
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Original Message:
Sent: 08-08-2020 11:08
From: Jim Fariss
Subject: Ozone treatment
DO NOT - DO NOT - DO NOT use an ozone generator on an assembled piano. Here is an excerpt from David Swartz of CORY care products that specializes in smoke damage restoration:
"Ozone works by oxidation known to be corrosive and will adversely affect piano strings, plate, metal parts, paint rubber parts (grommets) & moisture content=bleaching. Ozone has proven to be effective in the removal of smoke odors in natural substances (i.e. porous materials) such as soft woods, paper, felt, etc. Should the piano be in a rebuild state (i.e. plate, action, strings, etc. removed), one may find the ozone generator a useful tool."
My suggestion would be to contact the Pianoforte Tuners' Association and inquire who specializes in piano smoke & fire restoration.
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Jim Fariss, RPT
PTG Secretary/Treasurer
(719) 425-8845
Sec@PTG.org
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