| VANCOUVER,
BRITISH COLUMBIA--QuestAir Technologies Inc. (TSX:QAR)(AIM:QAR) has been
notified that one of its early strategic investors has sold its holding
in QuestAir in trades made on 24 May 2006.
Ballard Power Systems Inc. ("Ballard")
sold its entire holding of 2,775,175 common shares at an average price
of $1.35 per common share. Ballard made its first equity investment in
QuestAir in 2000.
This announcement is made pursuant
to the rules governing the operation of AIM as established by the London
Stock Exchange Plc.
About QuestAir Technologies Inc.
QuestAir Technologies Inc. is a developer
and supplier of proprietary gas purification systems for several large
international markets, including existing markets such as oil refining,
biogas production and natural gas processing, and emerging markets such
as fuel cell power plants and fuel cell vehicle refuelling stations. The
Company has joint development agreements with Exxon Mobil Research and
Engineering Company and Shell Hydrogen, and a collaboration with FuelCell
Energy. QuestAir is based in Burnaby, British Columbia and its shares trade
on the AIM Market of the London Stock Exchange Plc. and on the Toronto
Stock Exchange under the symbol "QAR".

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