Unused outdoor patio heater for sale (Living Accents model #4587390). ®/TMMark’s is a registered trademark of Mark’s Work Warehouse Ltd, used under licence. We recommend purchasing a patio cover fitted to your outdoor heater to protect your heater from damage and ensure its quality of use and appearance over time. 1,199 Estimated . Heaters cast warmth over a defined radius surrounding the heating element, and can easily be shut on or shut off when not in use. Please note that even if you have opted out of receiving marketing communications, we may still contact you for the purposes of administering your account and sending you transactional or operational emails.