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ModelECS-40

A. O. Smith ECS-40 Electric Water Heater instruction manual

The official instruction manual for the A. O. Smith ECS-40 Electric Water Heater, published by A. O. Smith. Read all 28 pages right here, jump to any chapter, or download and print the PDF.

28 pages · 0.5 MB English Published by A. O. Smith Added Sep 13, 2026
Instruction manual
ModelECS-40

01 ECS-40 instruction manual

A. O. Smith ECS-40 Electric Water Heater Instruction manual
28 pages · 100%
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02 Document details

BrandA. O. Smith
ModelECS-40
Document typeInstruction manual
CategoryHeating, Cooling & Air
Pages28
File size0.5 MB
LanguageEnglish
Title in the PDFAOS Residential Electric 6-119 185762-000 0207.p65
Original sourceassets.hotwater.com

03 Check you have the right manual

Thermostats show the model on the back of the faceplate or in the settings menu. Window units put the label on the side of the cabinet. Purifiers and dehumidifiers put it on the base or back.

Compare the model number on your product's label with the model list on the first pages of the PDF. Letters at the end often only mean color or region.

04 Common jobs

Is this the official A. O. Smith ECS-40 Electric Water Heater manual?

Yes. This is the instruction manual published by A. O. Smith, originally hosted at assets.hotwater.com. We host a copy so you can read, download and print it here.

Can I download the ECS-40 manual as a PDF?

Yes. Use the Download PDF button in the viewer or the sidebar. The file is 0.5 MB and has 28 pages.

Where is the model number on my heating, cooling & air?

Thermostats show the model on the back of the faceplate or in the settings menu. Window units put the label on the side of the cabinet. Purifiers and dehumidifiers put it on the base or back.