Diesel Emission Testing & DPF Cleaning
Every service below is available across Greater Sudbury & Northern Ontario — brought right to your yard with our fully mobile service. Not sure which one you need? Contact us and we'll help you figure it out.
Mobile Diesel Emission Testing
Missing an emission test can leave your trucks off the road and your plates un-renewed. Our Ontario Drive Clean accredited technicians bring fully mobile diesel emission testing directly to your location anywhere in Greater Sudbury and Northern Ontario, so your fleet stays compliant without lost hours or towing costs. We test on-site, deliver results fast, and get your heavy duty vehicles legally back on the road the same day.
Request This ServiceHeavy Duty Vehicle Emission Testing
Ontario requires heavy duty trucks and buses to pass regular emission testing to stay road-legal and renew registration. As an accredited Drive Clean test facility, Len's Clean Air provides certified heavy duty diesel emission testing across Greater Sudbury and surrounding areas, backed by more than 25 years of hands-on experience. We handle the full inspection process quickly and correctly, so you avoid failed tests, expired plates, and unnecessary delays for your commercial vehicles.
Request This ServiceDPF Filter Cleaning
A clogged diesel particulate filter forces your engine to work harder, triggers constant regens, kills fuel economy, and can lead to expensive downtime and derates. Our specialized DPF cleaning process removes accumulated soot and ash to restore your filter to near-original performance, extending its life and protecting your engine. As Northern Ontario's DPF cleaning specialist, we service heavy duty diesel filters thoroughly and reliably, saving you the cost of premature replacement.
Request This ServiceDPF Sales & Replacement
When a diesel particulate filter is cracked, melted, or beyond cleaning, a proper replacement is the only safe fix. Len's Clean Air supplies and fits quality replacement DPF filters for heavy duty diesel vehicles throughout Greater Sudbury and Northern Ontario. We help you choose the right filter for your make and model, ensuring correct fitment, restored performance, and full compliance with Ontario emission standards, so you get back to work without guesswork.
Request This ServiceMulti-Gas Analyzing & CO Testing
Accurate exhaust analysis is the foundation of every reliable emission result. Using professional-grade multi-gas analyzers, we measure carbon monoxide and other key exhaust gases to verify your heavy duty diesel engine is running clean and within Ontario's emission limits. This detailed testing helps identify hidden performance or emission problems early, giving fleet operators in Greater Sudbury clear, trustworthy data to keep vehicles compliant and running efficiently.
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