For Immediate Release 30 October, 2007

QuestAir announces start-up of refinery hydrogen purifier

BURNABY, B.C. – QuestAir Technologies Inc. (“QuestAir” or “the Company”; AIM: QAR; TSX: QAR) announced today that the prototype H-6200 hydrogen purifier has been started-up at an ExxonMobil refinery in France.  

The H-6200 hydrogen purifier will now be tested and monitored for the next several weeks to ensure that all sub-systems are operating as designed. Following this, the H-6200 unit will be placed into continuous operation at the refinery, in order to generate additional data under a number of process conditions to assist with broad commercial deployment of the product.

Jonathan Wilkinson, President and CEO of QuestAir, said, “The full scale commercial test of the H-6200 hydrogen purifier will be a gradual and controlled process, reflecting the fact that this installation is the first of its kind. This is another milestone towards the commercialization of the novel hydrogen purifier that QuestAir and ExxonMobil Research and Engineering Company ("EMRE") have been developing since 2003.”

QuestAir has been working with EMRE since 2003 to develop a large capacity rapid cycle pressure swing adsorption system, marketed as the H-6200, for use in oil refineries and petrochemical plants. This product is anticipated to offer advantages relative to other hydrogen recovery options including lower total erected costs, superior recovery performance, and improved operability.

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”.

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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