To obtain replacement instructions for a Garrison heater, Canadian Tire recommends contacting its customer relations department at 800-387-8803 as of January 2016. Garrison heaters are sold exclusively at Canadian Tire.
The Canadian Tire website includes a forum for customers to post questions about various products, including Garrison heaters. Employees of Canadian Tire provide answers to the questions.
To search forum posts for information about Garrison heater instruction manuals or heater operation functions, go to Answers.CanadianTire.ca. Click on Translate this Page to read the page in English rather than French. Search for Heating and Air Conditioning under the Home category, and then click on Portable Heaters. Garrison heaters are listed among the search results.