How Do I Activate the Manufacturer’s Warranty on my Machine? Horizon Fitness Updated August 25, 2021 21:07 Register your warranty either by mail or online within 30 days of purchase. Please retain proof of purchase. Horizon Fitness product registration. Was this article helpful? Yes No 0 out of 0 found this helpful Have more questions? Submit a request Related articles How Do I Contact Customer Tech Support? What are the Standard Manufacturer's Warranties on all the Machines? How Can I Purchase a Warranty Boost? (USA) What is Not Covered Under the Cardio Equipment Warranty? How Do I Contact Horizon Customer Service? Comments 0 comments Please sign in to leave a comment.