For Immediate Release 18 February 2008

QuestAir to supply PSA for Japanese hydrogen recovery project

VANCOUVER, B.C. – QuestAir Technologies Inc. (AIM: QAR; TSX: QAR) announced today that it has received an order valued at approximately CDN $1 million for an H-3100 hydrogen pressure swing adsorption (“PSA”) system. The order was placed by Iwatani International Corporation (“Iwatani”), Japan's leading supplier of merchant hydrogen, and the PSA will be used in a new hydrogen recovery project at an undisclosed location in Japan.

Jonathan Wilkinson, President and CEO of QuestAir said, “Hydrogen recovered from industrial sources has an extremely low greenhouse gas footprint when compared to more conventional methods of hydrogen production. Iwatani has shown great leadership in the development of low cost, low-carbon sources of hydrogen for both industrial and fuel cell customers in Japan.”

About QuestAir H-3100
QuestAir’s H-3100 PSA product (formerly marketed under the HyQuestor® brand) purifies gas streams containing hydrogen to high-purity hydrogen for use in a range of industrial and petrochemical processes. QuestAir’s PSA process and proprietary rotary valve technology deliver higher efficiency than conventional PSA systems in a more compact, reliable, cost-effective package. Since 1997, QuestAir has sold over 30 H-3100 plants to customers in Europe, Japan and North America.

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 refueling stations. 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 Iwatani International Corporation
Since establishment in 1930, Iwatani International Corporation has become active around the world. Initially, IIC specialized in the gas and energy business, but now their interests include fuel, consumer products, industrial materials, minerals, construction, agriculture, and medical products.

Iwatani is aggressively working to developing a series of converted energy and ecological energy business involving cogeneration fuelled by the clean energy of liquefied petroleum gas. Iwatani is also developing wind and solar power as well as fuel cells and hydrogen energy. In addition to its environmental preservation efforts made through strengthening and enhancing these business fields, the Iwatani Group has been promoting a program to obtain ISO 14001 certification, an international standard for environmental management.

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.

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