Who
we are

Owned and operated by Larsson Loseth out of Wardner, BC, Happy Valley Diesel is your trusted mobile repair service for heavy equipment and trucks. Whether you're broken down on a paved highway or deep in the bush on a remote logging road, we bring expert mechanical service directly to your site—wherever the job takes you.

Like our customers, we know what it takes to get the job done in the demanding environments of the logging, mining, construction, and transport industries. From the Kootenays to the Alberta prairie, we’ll get you up and running—fast, reliable, and built for the terrain.

Learn more about us

Our Services

Have a complex mechanical issue and not sure where to begin? Let us get to the bottom of it and get you back and running.
Prevention is the best medicine. Our sharp eye for detail will help keep you operating smoothly and consistently.
Does your machine need a clean slate? Let us help you extend the life of your machine with complete or partial rebuilds. Our fully equipped service truck, with 14000 lb capacity crane, means we can handle even the large rebuild projects.
Equipped with state of the art scanning and diagnostic tools, we get to the heart of the problem for your engine and respond to those complex and essential mechanical needs.