Firehouse Subs Rewards Members can get a large sub, medium fountain drink and chips or cookie for $18 plus applicable taxes. Excluding limited time offers. Available through the Firehouse Subs app or on firehousesubs.ca . At participating Firehouse Subs restaurants in Canada. Account registration required. One redemption per account per day. Offer must be activated through the Firehouse Subs app or on firehousesubs.ca . Substitutions or modifications charged extra. Not valid in restaurant . Firehouse Subs Rewards offers are subject to Firehouse Rewards Terms and Conditions and are subject to change, see firehousesubs.ca for more details. Void where prohibited. Cannot be combined with any other deal, combo or offer. Firehouse Subs reserves the right to amend or terminate this Offer at any time without notice and in its sole discretion. TM & © 2025 FRG, LLC.