Contact Avista Utilities Customer Service

Avista Utilities corporate office is located in the United States at the following address: Avista Corporation, 1411 E. Mission Ave. Spokane, Washington 99252-0001. Use it for sending bill payments. Also, there is another address: Avista Utilities Customer Service, MSC-34 P.O. Box 3727 Spokane, Washington 99220-3727. It is intended for receiving other correspondence, for example, those corporate-related papers that the company email doesn’t accept.
Make sure that you have written all significant data on the envelope correctly. Even due to a minor mistake in address, your letter may not reach the desired destination.

The company representatives receive customers during the following business hours: Monday through Friday from 7 a.m. to 7 p.m. GMT-5 and from 9 a.m. to 5 p.m. GMT-5 on Saturdays. So, keep it in mind when you plan to contact Avista Utilities customer service. If you are a media person, there is a media line whose representatives are ready to help 24/7. Since the business hours may change, check actual information on the official website by visiting the “Contact Us” page.