DKSI is your Canadian source for diesel-fired Bunk heaters, Diesel Engine heaters, and service parts. Based out of beautiful British Columbia, Canada, our focus is to provide drivers, fleets, and dealers alike with a trusted resource for original and replacement parts for all major air and coolant heaters as well as our own line of PHP Air Heaters, Coolant Heaters, and Maintenance Kits. All PHP heaters come with a FULL 2-year warranty and ship from warehouses in Canada & the USA. Plus, all Heaters and Parts are supported by our local Technical Engineers.