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  5. Water heater Cooker IH
  6. Electric water heater for one-room apartments (microcomputer-less)

Electric water heater for one-room apartments (microcomputer-less)

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ES-150/200R series

last updated:Mar 11, 2026

日本イトミック
日本イトミック
  • Official site

Square-shaped, standard pressure electric water heater for single-person use. You can continue to use the "nighttime electricity" you are currently contracted for.

It comes with piping components such as pressure relief valves and blow-off valves, and since it is stored in a square case, it fits well wherever it is installed, allowing for a neat appearance. Installation is quick and easy as it only requires connecting the hot water and water supply ports. This type can be neatly installed next to mini kitchens in apartment buildings or in narrow spaces. You can continue to use the "nighttime electricity" you are currently contracted for. Available in 150L and 200L options, it is suitable for small-capacity living facilities for single residents, such as dormitories and apartments. This product is a "hot water supply only type." There is no remote control. It is an electric water heater that operates for 8 hours and is compatible with breakers that control power supply from the electric company. If you need to accommodate new power and regular power, please consider the microcomputer type or the type with a built-in time switch.

    Water heater Cooker IH
ES-RM.jpg

Electric water heater for one-room apartments (microcomputer-less)

ES-RM.jpg
ES-RM.jpg
  • Related Link - https://www.itomic.co.jp/category/es_r_series/

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basic information

It comes with piping components such as pressure relief valves and blow-off valves, and since it is stored in a square case, it can be installed neatly anywhere, keeping things tidy. Installation is also quick as it only requires connecting the hot water outlet and water inlet. Storage capacity: 150L/200L Power specifications: Single-phase 200V 2.4kW *Microcontroller-less *Additional related products are required. For more details, please refer to the catalog on our company website.

Price information

Suggested retail price of the product: 370,000 yen (excluding tax) ~ *Installation cost not included.

Price range

P3

Delivery Time

P4

Applications/Examples of results

Guard rooms and dormitories in single-person apartments, private homes, and office buildings.

Line up(3)

Model number overview
ES-150R Power specifications: Single-phase 200V 2.4kW, Suggested retail price (excluding tax): 370,000 yen
ES-200R Power specifications: Single-phase 200V 2.4kW, Suggested retail price (excluding tax): 380,000 yen
ES-S200R Power specifications: Single-phase 200V 2.4kW, Suggested retail price (excluding tax): 400,000 yen

catalog(1)

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Electric Water Heater Comprehensive Catalog 2025

Electric Water Heater Comprehensive Catalog 2025

CATALOG
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News about this product(1)

[Free Participation] Notice of Itomic Web Seminar to be Held on April 27 (Monday)

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■Event Overview: Date and Time: April 27, 2026 (Monday) (1) 14:00 - (2) 16:00, approximately 1 hour Format: Online (Zoom) Participation Fee: Free ■Content: Basics of Electric Water Heaters (Beginner Level) Types and features of electric water heaters installed in non-residential buildings, ranging from small to large, various applications, installation locations, and basic structures (local and central, storage and instantaneous, closed and open). ■Recommended for: - Newcomers who are hearing about electric water heaters for the first time. ■Registration: https://forms.gle/U49ELmag2bCrKChu6

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Building materials, supplies and fixtures manufacturers

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Does your company not have a break room? The water heater used there might be one of our products. We, Japan Itomic, have been dedicated to the research and development of water heaters for over 70 years since our founding. Initially, we were a manufacturer dealing with gas water heaters, but one day, we heard during a business meeting that "the water in a pot cools down," which led us to start developing electric water heaters. We have received recognition for their superior safety and convenience compared to gas water heaters, earning the trust of various industries and organizations. At Japan Itomic, professionals who are well-versed in water heating propose the most suitable water heating systems for every situation. From product development to manufacturing, sales, after-sales service, and replacement installation, we provide a one-stop solution, delivering a safe and comfortable environment with "warm water." 【Itomic Product Support】~For long-lasting use~ Japan Itomic, specializing in commercial electric water heaters, offers reliable after-sales service 24 hours a day, 365 days a year to respond to sudden equipment failures during operations. Additionally, to ensure that customers can use our water heating solutions with peace of mind for a long time, we provide a three-year warranty on electric water heaters and commercial eco-cute systems.

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