Canada looks at HD emissions

By Jim Taylor, Editor MACS ACtion Magazine

Saying that  after 2018  it anticipates reducing greenhouse gas emissions from heavy-duty vehicles by up to 23 percent, Canada has implemented new industry regulations for on-road vehicles. The move was announced by Canada’s Environment Minister, the Honorable Peter Kent.


It affects the whole range of on-road heavy-duty vehicles and engines, including large pick-up trucks, short and long-haul tractors, cement and garbage trucks, buses, and many others beginning with the 2014 model year.

Canada has already worked closely with the United States to establish common North American standards for regulating greenhouse gas emissions for light-duty vehicles for the 2011-2016 model years, and is working towards proposed regulations for model years 2017 and beyond.

The government is after all the usual suspects—carbon dioxide, methane, oxides of nitrogen—but of additional note is the attention paid to R-134a refrigerant systems. Acknowledging that the present refrigerant has a significant GWP, the government will mandate systems that leak no more than 1.5% of their charge, expressed in grams per year.

One interesting exception appears in the text: “… if the total refrigerant capacity is less than 734 grams, the percent leakage rate referred to in subsection (1) or the adjusted percent leakage rate referred to in subsection (2), as the case may be, may exceed 1.5% per year if the total leakage rate does not exceed 11.0 grams per year.”

734 g equals 1.62 lbs of refrigerant so some systems, most likely on smaller vehicles, get a pass of sorts.


The Mobile Air Conditioning Society’s blog has been honored as the best business to business blog in the Automotive Aftermarket by the Automotive Communications Awards and the Car Care Council Women’s Board!

When having your mobile A/C system professionally serviced, insist on proper repair procedures and quality replacement parts. Insist on recovery and recycling so that refrigerant can be reused and not released into the atmosphere.

If you’re a service professional and not a MACS member yet, you should be, click here for more information.

You can E-mail us at or visit to find a Mobile Air Conditioning Society member repair shop in your area. Visit to find out more about your car’s mobile A/C and engine cooling system.

The 33rd annual Mobile Air Conditioning Society (MACS) Worldwide Training Conference and Trade Show, Be the Best of the Best will take place February 7-9, 2013 at the Caribe Royale, Orlando, FL.

The entire set of regulations is based on fleet averages of emissions for several classes of vehicle from 2b through Class 8, and establishes a system of credits and penalties within the industry. Supporters say that manufacturing costs will rise slightly, but that purchasers will soon recover the initial cost through increased fuel efficiency.


About macsworldwide

Mobile Air Conditioning Society (MACS) Worldwide Founded in 1981, MACS is the leading non-profit trade association for the mobile air conditioning, heating and engine cooling system segment of the automotive aftermarket. Since 1991, MACS has assisted more than 600,000 technicians to comply with the 1990 U.S. EPA Clean Air Act requirements for certification in refrigerant recovery and recycling to protect the environment. The Mobile Air Conditioning Society (MACS) Worldwide’s mission is clear and focused--as the recognized global authority on mobile air conditioning and heat transfer industry issues.
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