Contact Mercer Landmark Customer Service

We’re here for all your energy needs!

The Mercer Landmark Energy team has been addressing the needs of households and businesses in Northwest and Central Ohio and West-Central Indiana since 1933. Whatever fuel or energy service you need, you can count on our experienced, responsive team to handle it.

If you have any questions or requests, please fill out the form below, and you’ll receive a prompt response from our customer-service team.

Note: If this is an emergency, please call our office directly. DO NOT USE THIS ONLINE FORM. We have customer-service representatives ready to address your emergency needs 24 hours a day.

Our main office is located at:

5215 State Route 118
Coldwater, OH 45828
888-969-9151

HOURS:
Monday: 7:30 a.m. – 4:30 p.m.
Tuesday: 7:30 a.m. – 4:30 p.m.
Wednesday: 7:30 a.m. – 4:30 p.m.
Thursday: 7:30 a.m. – 4:30 p.m.
Friday: 7:30 a.m. – 4:30 p.m.
Saturday: Closed
Sunday: Closed

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