Ontario’s trusted, certified OBT1 & TSSA contractor for Diesel Generators and Diesel Pumps
10+ Years of B139, B138, and NFPA Code-Compliant Inspections and Maintenance Services
SAO Contracting keeps Ontario businesses safe, compliant, and operational. From fuel tanks and accessories to exhaust systems connected to a diesel generator or fire pump, we specialize in comprehensive OBT-1 certified services for your diesel generator or pump from the connected fuel system, exhaust system, or dampers to diesel fuel polishing, ensuring your operations are ready when an emergency happens.
SERVICES
Piping and Accessory Upgrades
Our technicians enhance operational efficiency by replacing piping sections, obtaining essential parts, and ensuring oil-fired appliance valves meet B139 Code. Large-scale operations like data centres, mining companies, and hospitals benefit from these upgrades. We thoroughly analyze the required work for seamless integration with your existing system, regardless of its size.
Fuel Tank Testing, Cleaning, and Installation (B139 Code Compliant)
Ontario businesses requiring diesel fuel tank services trust SAO Contracting for safe and code-compliant solutions. Our OBT-1 certified technicians provide above ground fuel tank installations, diesel tank cleaning, and inspections in compliance with B139 and TSSA requirements. We also assist with fuel oil delivery certificates, ensuring your storage tanks and generator fuel tanks meet Ontario safety and compliance standards.
Generator Exhaust Testing and Installation Services in Ontario
Proper generator exhaust systems installations and back pressure testing are critical for safety and compliance. SAO Contracting’s technicians provide NFPA and TSSA-compliant generator exhaust inspections, ensuring safe operation in hospitals, retirement homes, and other critical facilities. Our generator exhaust services include noise reduction, system optimization, and compliance with B139 and Ontario building code requirements.
Pump Setup and Installation
Damper Testing and Commissioning
Fuel Cleaning and Polishing for Tanks Under 100,000 L

A DECADE OF EXPERIENCE WORKING IN ONTARIO
With over 10 years of experience, SAO Contracting ensures your fuel systems and engine-driven appliances comply with B139 and TSSA codes. Our skilled staff handles equipment upgrades, fuel system inspections, and obtaining TSSA Fuel Oil Delivery Certificates, keeping your operations safe and code-compliant.

COMPREHENSIVE FUEL SYSTEM INSPECTIONS IN ONTARIO (OBT-1 & PM3 CERTIFIED)
SAO Contracting delivers complete engine driven appliance inspection services across Ontario. Our team ensures compliance with B139-19, B138, TSSA generator requirements, Canadian National Building Code, and NFPA 20 standards. Whether it’s diesel appliance inspections, fuel systems, or damper commissioning, our certified OBT-1 and PM3 inspectors ensure full safety and compliance for your business.

RELIABLE DIESEL GENERATOR AND FUEL SYSTEM MAINTENANCE SERVICES
SAO Contracting provides annual maintenance and testing for fuel tanks, exhaust, and dampers that are connected to your generator or fire pump across Ontario. Our OBT-1 and PM3 certified technicians specialize in preventive fuel system maintenance, emergency generator servicing, and damper testing. We help businesses reduce risks, control maintenance costs, and stay fully compliant with TSSA, NFPA, and B139 regulations.
TESTIMONIALS
Recently hired SAO contracting to polish almost 50,000 liters of Diesel Fuel.
SAO always worked safe and efficient and completed the job on time and on budget An absolute pleasure to work with Scott, I would highly recommend them !
Having used SAO Contracting for my fuel systems needs for a multitude of years, I can certainly speak to the outstanding and exemplary services that Scott and SAO Contracting provides. I always receive prompt attention to my matters and any services delivered are always accompanied by a vast amount of knowledge that is only cultured by extensive years of experience in the trade. I would highly recommend SAO Contracting for your fuel systems needs.
