ESW America is a leading independent automotive emissions testing facility located approximately 20 miles north of Philadelphia, Pennsylvania.

ESW America’s state-of-the-art testing facility has multiple engine dynamometers and chassis dynamometers to allow a wide range of testing. Vehicle and engine types that can be tested range from small off-road engines, to ATVs and motorcycles, to heavy-duty engines and vehicles.

ESW America Testing and Certification Services

A Variety of Engine and Chassis Dynamometers

Emissions Testing and Fuel Capabilities

Specialized Staff

ESW America’s team of highly skilled test engineers, technicians, and fabricators has a combined total of over 70 years of experience. Based on our experience and qualifications, we work with many leading engine and vehicle manufacturers as well as with retrofit, dual-fuel, and hybrid-drive companies.

In addition, since we are connected to heavy duty diesel exhaust retrofit and aftermarket system manufacturers (ESW Group and Skyline Emissions), we can provide custom fabrication of exhaust equipment and other accessories for your test campaign.

ESW America has a collection of heavy-duty engines available for testing, and the team can assist in acquisition of vehicles and engines.

Quality, Recognition, and Confidentiality

ESW America is an ISO certified company and relies on a Quality Management System in accordance with ISO 9001:2015 to verify that procedures are in place for conformance to quality standards. In addition, ESW America’s test and operating procedures strictly adhere to the CFR. ESWA uses high quality analytical instruments and related hardware (produced by Horiba, AVL, etc.).

Our laboratory is regularly audited by CARB and we participate in EPA Round Robin tests. Quality control documentation has been made available to, carefully scrutinized, and accepted by CARB and other regulatory agencies. Protecting your confidential data is a top priority. Data acquisition systems are linked to local computers which are firewalled. All records as well as the hardware are kept securely on site to only be released to the customer.


To inquire about testing, please contact us at or by phone at 215.699.0730.

ESW America, 200 Progress Drive, Montgomeryville, PA 18936