The Generator Experts Since 1965 | License #708125 | Contact Us

Generator Service & Repair
All Makes & Models

Let Us Keep Your Generator Running

An ounce of prevention is worth a pound of cure. Duthie Power offers generator repair services so that you know you can rely on it whenever there is an emergency or power outage. Our California generator service and repair company works with all makes and models of generators and other necessary power equipment.

Our customer-focused team offers emergency generator maintenance services to a wide range of power equipment that includes: Generators, Automatic Transfer Switches, Fire Pumps, Marine Generators, Fuel Delivery and Fuel Polishing. Learn more about our California generator repair services below.

Why Choose Duthie? Watch our Video!

Major Generator Overhauls

Our field technicians can restore generators and diesel fire pump engines to OEM specifications. We also overhaul generator control panels and switchgear. Entire Emergency Power Supply System’s, including Automatic Transfer Switches and other emergency power equipment. Our number one goal is to keep you up and running when a power emergency may arise. 

Generator Repairs, Rebuilds and Replacements

Our union field technicians do not work on commission and will only recommend repairs or replacements that are in your best interests. Their job is to keep you compliant with the regulations and keep your equipment running. If you need additional generator repair services or parts, our home office will provide a quote before any additional work is started.

ATS Maintenance and Repairs

Full comprehensive preventative maintenance including contact cleaning, lubrication, calibration and testing of all makes of automatic and manual transfer switches.

Fuel Delivery / Tank Cleaning

Delivery of diesel/propane direct to work sites. Plus fuel polishing/tank cleaning for diesel tanks to eliminate contaminants. We pump the fuel into a storage tank, clean and then refill.

Fire Pump Service

We specialize in preventative maintenance; diagnostics and services on all makes & models of diesel fire pumps. Complete service and repair capabilities for all types of systems.

Generator Service and Repair Experts

We work with all makes and models of generators / power equipment.


We’re committed to helping our customers comply with the latest federal, state and local emission regulations, including:

AQMD [South Coast Air Quality Management District] and
CARB [California Air Resources Board].

We can help you avoid costly fines and the aggravation of dealing with a regulator.

air pollution control district


Most generators fail because they simply haven’t been maintained properly. Duthie Power offers regularly scheduled maintenance services, so you’ll know your generator will fire up when you need it.

Our highly-qualified technicians perform a comprehensive, 32-point inspection of your emergency power supply system [EPSS] following strict regulatory guidelines. Of course, we can do any vital repairs or maintenance while we’re there.

Our inspection covers all the systems of the EPSS: fuel, exhaust and filtration, lubrication, cooling, battery, generator, generator controls, transfer switches, remote monitoring [if applicable] and safety systems.

Scheduled maintenance can be personally tailored:

Build a plan to meet your specific needs.

Scheduled Maintenance

No Agreement Required: Safeguard Your Power Investment

Regular service to your generator will safeguard your ability to have emergency power when you need it, but we also realize many of our customers do not want to sign an agreement for service. We do not require a signed agreement or contract to make sure your equipment is properly maintained. We will automatically add you to our schedule maintenance notifications that will save you money, extend the life of your equipment, protect against the high cost of power failure, and keep you in compliance with all regulatory requirements. Of course, if your safety protocol demands a service agreement be in place, we can tailor an agreement to fit your needs.

Rapid Reliable Response

Our field technicians and vehicles are well-equipped for most situations and have immediate access to our extensive parts warehouse. We guarantee a 15-minute telephone response with a typical 2-hour on-site arrival (depending on location) – 24 hours a day, 365 days a year

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