24 Hour Emergency Service Yankee Propane wants to ensure that everyone is safe and warm all winter long. If you live in the Teterboro, NJ, Hardyston, NJ, and Florida, NY areas and run into a no-heat emergency, please CALL US IMMEDIATELY at (800) 386-3835. We maintain a 24-hour emergency service system to assure that, in an emergency, one of our service personnel will be available to assist you. We would be happy to assist you no matter the time of day or weather. Contact us and we will respond promptly to help you with your no-heat emergency.