Mr. Heater HS25NG/LP Operating Instructions And Owner's Manual page 14

IF SERVICE IS REQUIRED
PLEASE DO NOT RETURN THIS APPLIANCE TO YOUR STORE
For information regarding service, please call our Toll-Free Number:
1-800-251-0001.
Our office hours are 8:30 AM – 5:00 PM, Eastern Time Zone
Monday through Friday
Please include the model number, date of purchase, and description of
problem in all communication.
Installation instructions and Owner's Manual
Model # MH25NG/LP HS25NG/LP
E14