RNS Number:4445L
QuestAir Technologies Inc
25 April 2005


For Immediate Release                                              25 April 2005


             QuestAir announces credit facility from Comerica Bank


BURNABY, B.C. - QuestAir Technologies Inc. (AIM: QAR; TSX: QAR), a developer and
supplier of advanced gas purification systems for refinery, industrial and fuel
cell markets, announced today that it had secured a US$3 million credit facility
from Comerica Bank. The credit facility is comprised of a US$1 million accounts
receivable credit line and a US$2 million term loan.

Jonathan Wilkinson, President and CEO of QuestAir, said that the credit line
will be used to support QuestAir's working capital requirements as the Company
expands the sales of its commercial gas purification systems. The term loan will
principally be used to finance capital investments, including manufacturing
equipment required to commercialize the large capacity hydrogen purification
system that QuestAir is developing in conjunction with ExxonMobil Research and
Engineering Company.

J.P. Michael, Senior Vice President of Comerica's Technology & Life Sciences
division said the bank has extensive experience in providing innovative debt
financing to growth companies with proven technology and strong management
teams. "We are extremely pleased to work with QuestAir, and we look forward to
expanding our relationship as QuestAir grows and its debt financing requirements
expand," he said

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.


                                      -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".

About Comerica Bank's Technology & Life Sciences Division

Comerica Bank's Technology & Life Sciences Division is one of the nation's
leading technology banking practices, offering a wide range of financial
services tailored to corporate customers, entrepreneurs and professionals.
Veteran bankers provide credit and financial services and products to young,
growing, professionally backed technology and life sciences companies, as well
as their more mature counterparts. The Technology & Life Sciences Division
serves all major U.S. technology centers from offices coast-to-coast and its
headquarters in Palo Alto, Calif. Comerica Bank is a subsidiary of Comerica
Incorporated (NYSE: CMA), a financial services company headquartered in Detroit,
which is the 20th largest banking company in the nation, with $51.8 billion in
total assets at Dec. 31, 2004.

For further information please contact:

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

UK media contact:
Charles Ryland
Ben Willey
Eleanor Williamson
Buchanan Communications
Phone: 020 7466 5000

Canadian media contact:
Pamela Smith
James Hoggan + Associates
Phone: (001) 604-739-7500


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

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