RNS Number:4110C
QuestAir Technologies Inc
04 May 2006


For Immediate Release                                             4 May, 2006

         QuestAir announces filing of preliminary short form prospectus

THIS NEWS RELEASE IS NOT FOR DISSEMINATION IN THE UNITED STATES OR TO ANY UNITED
STATES NEWS SERVICES.


VANCOUVER, B.C. - QuestAir Technologies Inc. (AIM: QAR; TSX: QAR) announced
today that it has filed a preliminary short form prospectus in each of the
provinces of Canada to qualify an offering of common shares of the Company.
Canaccord Adams Limited and Clarus Securities Inc. will act as lead managers and
joint bookrunners for the proposed offering. The offering may also occur by
private placement in the United States, the United Kingdom and other
jurisdictions in Europe.


Proceeds from this offering will be used to finance the ongoing development and
commercialization of the QuestAir's proprietary gas purification technology, and
for general working capital.


A copy of the preliminary short form prospectus is available on www.sedar.com.


This release shall not constitute an offer to sell or the solicitation of any
offer to buy securities in any jurisdiction. The common shares have not been
registered under the United States Securities Act of 1933, as amended, and they
may not be offered or sold in the United States absent registration or an
applicable exemption from registration.


                                      -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


UK media contact:                         Canadian media contact:

Charles Ryland                            Terry Foster

Ben Willey                                James Hoggan & Associates

Buchanan Communications                   Phone: (001) 604-739-7500

Phone: +44 207 466 5000


Canaccord Adams Limited                   Clarus Securities Inc.

Mark Ashurst                              Rod Campbell

Phone: +44 207 518 2777                   Phone: (001) 604-605-0982



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

END
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