Service Requests Strong Spas, the manufacturer of Ohana Spas, holds the warranty for spas purchased from this site and is happy to assist you. If you're having any trouble with your spa, please give Strong Spas a call so you can rest easy. Strong Spas Service Contact PHONE: 1-800-787-6649 #4 EMAIL: support@strong9.com Service Department Hours MON-FRI: 9 AM to 5 PM EST