Due to the catalytic reactor of the Polyarc® system, ARC recommends replacing the reactor every 6 months assuming continuous operation. The Polyarc system is warrantied for 6-months. Replacement reactors are available at a discounted price assuming the return of the used reactor back to ARC. Replacements are available as single replacement units or as subscription plans. For subscription plans, users are shipped a replacement automatically at 6-month intervals to ensure minimal downtime. Subscription plans are available in two options: 2- or 5-year plans where replacements cost as low as $695 per unit.