For Immediate Release 4 September, 2007

QuestAir to supply methane recovery system for Hampshire landfill gas-to-energy project

VANCOUVER, B.C. – QuestAir Technologies Inc. (AIM: QAR; TSX: QAR) announced today that it has received an order valued at approximately CDN$1.2 million for a M-3100 methane recovery system for use in a landfill gas-to-energy project in New Hampshire. The order was received from SCS Energy, a division of SCS Engineers, a leader in the design, construction and operation of landfill gas-to-energy projects in the US.

Jonathan Wilkinson, President and CEO of QuestAir, said “QuestAir’s M-3100 will increase the energy content of landfill gas from the Rochester Neck Road landfill by removing carbon dioxide. The upgraded product gas will be used to fire a combined cycle cogeneration facility at the University of New Hampshire (“UNH”), generating both electrical power and steam for building heating.”

“The University of New Hampshire is a leader in sustainability and the use of renewable energy. The system supplied by SCS Energy, including QuestAir’s M-3100, will allow UNH to replace fossil fuels with renewable upgraded landfill gas in their existing cogeneration facility, which provides 75% of the university’s energy requirements.”

“This is expected to result in significant environmental and economic benefits, including a direct reduction in greenhouse gas emissions, as well as substantial cost savings from lower natural gas consumption,” Wilkinson said.

Jeffrey Pierce, Vice President of SCS Energy, said “SCS selected a QuestAir M-3100 PSA system for the UNH project because its rotary valve provides a significant improvement in PSA design.  Also, the M-3100’s small size, attractive economics, and simplicity of operation provide a good solution for a stable, enhanced BTU fuel gas to fire UNH’s 8 MW turbine.”
                                             
About the QuestAir M-3100
QuestAir’s M-3100 purifies methane-containing gas streams such as landfill gas and anaerobic digester gas to high purity methane, suitable for supplementing existing natural gas supplies. QuestAir’s PSA process and proprietary rotary valve technology deliver higher efficiency than conventional PSA systems in a more compact, cost-effective package. QuestAir’s M-3100 system can upgrade up to 9 million cubic feet of biogas per day.

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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