How much does water heater cost in Japan?

¥212,472 per unit, as of September 2026 — the unweighted average of 47 surveyed cities in the government's retail price survey.

Which Japanese city has the cheapest water heater?

Among the surveyed cities in September 2026, Akita was cheapest at ¥122,387 and Takamatsu the most expensive at ¥344,445.

How much have water heater prices changed in Japan over the past year?

As of September 2026, -0.7% year on year, measured by Japan's official consumer price index (2020 = 100).

How much have water heater prices changed in Japan over the past five years?

+9.0% compared with the same month five years earlier. The index now reads 108.9.

When were water heater prices in Japan at their highest?

The series peaked at 109.9 in October 2025. The latest reading is -0.9% against that peak.

What is the difference between the index and the yen price?

This page carries two kinds of number. The index (2020 = 100) measures percentage change over time and is not a yen amount; the yen figure is an actual average retail price from the government's retail price survey. Source: 総務省統計局消費者物価指数 (e-Stat table 0003427113, nationwide, monthly).

Housing · code 3104

Water heater price in Japan

給湯器

Average retail price

¥212,472per unit-1.2% year on year

2026-09 · unweighted average of 47 surveyed cities

Surveyed specification: ガス給湯器，風呂給湯器，エコジョーズ，屋外壁掛型，〔風呂沸かし機能〕オート，〔給湯能力〕２０号，浴室リモコン・台所リモコン付き

Cheapest surveyed city: ¥122,387 Akita
Priciest surveyed city: ¥344,445 Takamatsu

Price in your city:

¥170,297per unit-19.8% vs national average#13 cheapest of 47 cities

See all 47 cities, cheapest first

#	City	Price (JPY) · per unit
1	Akita	¥122,387
2	Shizuoka	¥135,377
3	Yokohama	¥138,998
4	Okayama	¥146,800
5	Saitama	¥148,855
6	Otsu	¥150,993
7	Mito	¥155,538
8	Gifu	¥157,127
9	Nara	¥157,223
10	Kyoto	¥157,842
11	Niigata	¥160,383
12	Chiba	¥164,313
13	Tokyo (23 wards)	¥170,297
14	Fukuoka	¥176,440
15	Hiroshima	¥177,698
16	Osaka	¥183,027
17	Tsu	¥183,053
18	Matsuyama	¥183,387
19	Wakayama	¥185,057
20	Utsunomiya	¥190,500
21	Toyama	¥191,167
22	Kobe	¥193,536
23	Maebashi	¥195,933
24	Kochi	¥202,953
25	Kumamoto	¥204,267
26	Kofu	¥204,820
27	Sendai	¥206,206
28	Nagoya	¥208,022
29	Miyazaki	¥209,193
30	Matsue	¥209,893
31	Tokushima	¥209,978
32	Nagasaki	¥235,160
33	Oita	¥242,698
34	Fukui	¥244,678
35	Aomori	¥261,514
36	Tottori	¥262,160
37	Saga	¥269,031
38	Kanazawa	¥271,583
39	Yamagata	¥273,867
40	Morioka	¥285,877
41	Yamaguchi	¥289,546
42	Nagano	¥289,935
43	Kagoshima	¥290,733
44	Fukushima	¥296,945
45	Naha	¥304,913
46	Sapporo	¥341,838
47	Takamatsu	¥344,445

Retail price survey conducted by the Statistics Bureau of Japan. This is a survey average, not a shop price — actual prices vary by store. 総務省統計局小売物価統計調査 · Surveyed items and specifications

Key facts

Water heater costs ¥212,472 per unit in Japan as of September 2026 — the unweighted average of 47 surveyed cities, down 1.2% from a year earlier. Measured as an index, the official CPI for water heater reads 108.9 (2020 = 100) in September 2026, down 0.7% year on year and up 9.0% over five years.

Water heater sits in the housing group of Japan's CPI basket, with 321 monthly observations from January 2000 to September 2026. The series peaked at 109.9 in October 2025 and bottomed at 98.4 in November 2005; the latest reading is -0.9% against that peak. Against ten years ago it is +1.1%.

Latest CPI

108.9

2026-09 (2020=100)

YoY %

-0.7%

5y change %

+9.0%

Change since 2000-01

+5.1%

Annual average index by year

Annual average consumer price index for Water heater in Japan (2020 = 100)
Year	Index	YoY %	Months
2015	106.3	+0.2%	12
2016	107.4	+1.0%	12
2017	105.8	-1.5%	12
2018	100.7	-4.8%	12
2019	100.3	-0.4%	12
2020	100.0	-0.3%	12
2021	99.6	-0.4%	12
2022	102.6	+3.0%	12
2023	105.5	+2.8%	12
2024	107.6	+2.0%	12
2025	108.5	+0.8%	12
2026	107.7	-0.7%	9

Average of the monthly index values in each year (2020 = 100). Blank months are excluded.

Average retail price by month

2026-09	¥212,472
2026-08	¥201,634
2026-07	¥208,981
2026-06	¥208,452
2026-05	¥209,552
2026-04	¥210,356
2026-03	¥208,465
2026-02	¥208,296
2026-01	¥208,768
2025-12	¥210,193
2025-11	¥212,760
2025-10	¥214,692
2025-09	¥215,046

Frequently asked questions

How much does water heater cost in Japan?: ¥212,472 per unit, as of September 2026 — the unweighted average of 47 surveyed cities in the government's retail price survey.
Which Japanese city has the cheapest water heater?: Among the surveyed cities in September 2026, Akita was cheapest at ¥122,387 and Takamatsu the most expensive at ¥344,445.
How much have water heater prices changed in Japan over the past year?: As of September 2026, -0.7% year on year, measured by Japan's official consumer price index (2020 = 100).
How much have water heater prices changed in Japan over the past five years?: +9.0% compared with the same month five years earlier. The index now reads 108.9.
When were water heater prices in Japan at their highest?: The series peaked at 109.9 in October 2025. The latest reading is -0.9% against that peak.
What is the difference between the index and the yen price?: This page carries two kinds of number. The index (2020 = 100) measures percentage change over time and is not a yen amount; the yen figure is an actual average retail price from the government's retail price survey. Source: 総務省統計局消費者物価指数 (e-Stat table 0003427113, nationwide, monthly).