How Do I Activate the Manufacturer’s Warranty on My Machine? Horizon Fitness Updated March 29, 2022 18:26 Register your warranty online within 30 days of purchase. Please retain proof of purchase. Horizon Fitness product registration. Was this article helpful? Yes No 1 out of 3 found this helpful Have more questions? Submit a request Related articles What are the Standard Manufacturer's Warranties on all the Machines? How Do I Contact Horizon Customer Service? What is Not Covered Under the Cardio Equipment Warranty? How Do I Contact Customer Tech Support? When to Replace a Treadmill Belt Comments 0 comments Please sign in to leave a comment.