Thank you for your feedback. The run time of the unit can vary depending on the load applied during operation. Since your unit is dual-fuel, you have the option to use propane, which may offer a longer run time depending on the size of the tank. Our hose and regulator are designed for tanks up to 40 pounds, but if you wish to use a larger tank, you can contact your local propane supplier for the appropriate hose and regulator to accommodate the tank size. If you have any further questions or need assistance, please don’t hesitate to contact our support team at 1-877-338-0999, email us at support@cpeauto.com, or use the live chat feature on our website.