RNS Number:8390E
QuestAir Technologies Inc
20 June 2006



For Immediate Release                                             20 June, 2006

                     QuestAir announces shareholder dealing

VANCOUVER, B.C. - QuestAir Technologies Inc. (AIM: QAR; TSX: QAR) has been
notified that one of its early venture capital investors sold a portion of its
holding in QuestAir in trades completed on 14 June 2006.


Hydro-Quebec Capitech Inc. ("Capitech") sold a total of 800,000 common shares at
an average price of $1.25 per common share. Capitech's remaining holding is
966,399 common shares, representing 1.9% of QuestAir's undiluted share capital.
Capitech made its first equity investment in QuestAir in 1999.


This announcement is made pursuant to the rules governing the operation of AIM
as established by the London Stock Exchange Plc.


                                      -30-


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".


Forward Looking Statements

Certain statements in this press release may constitute ''forward-looking''
statements which involve known and unknown risks, uncertainties and other
factors which may cause the actual results, performance or achievements of the
Company, or industry results, to be materially different from any future
results, performance or achievements expressed or implied by such
forward-looking statements. When used in this press release, such statements use
such words as "anticipate", "believe", "plan", "estimate", "expect", "intend",
''may'', ''will'' and other similar terminology. These statements reflect
current expectations regarding future events and operating performance and speak
only as of the date of this press release. Forward-looking statements involve
significant risks and uncertainties, should not be read as guarantees of future
performance or results, and will not necessarily be accurate indications of
whether or not such results will be achieved. A number of factors could cause
actual results to differ materially from the results discussed in the
forward-looking statements.


Contact Information:


QuestAir Technologies Inc.
Andrew Hall
Director, Corporate Development and External Communications
Phone: (001) 604-453-6967
Email: hall@questairinc.com
www.questairinc.com


Canadian media contact:                         UK media contact:
Terry Foster                                    Charles Ryland
James Hoggan & Associates                       Ben Willey
Phone: (001) 604-739-7500                       Buchanan Communications
                                                Phone: +44 207 466 5000





                      This information is provided by RNS
            The company news service from the London Stock Exchange

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