Now: winter heating
Measure, then choose
Measure, then choose
the appliance that's
just right.
Choudo Kaden helps people living in Japan choose home appliances that fit their room size, hours of use and lifestyle. We calculate electricity costs at one shared price (31 yen/kWh) and show the source and date for every number.
Heater guides
Heat the whole room
Heat your feet
Heat just you
Keep the heat in
Dry air & condensation
Compare
Heaters ranked by cost per hour10 kinds of heater, cheapest firstCheapest0 yenwith a combination calculator
Oil heater vs air conditionerWhich costs less to run?Per hour~10 vs 2–4 yen6 tatami, same temperature- Kotatsu vs electric blanketWhich costs less?Per hour~5.3 vs 0.8 yenkotatsu high, blanket medium
- Ceramic heater vs air conditionerWhich costs less?Per hour~37 vs 2–4 yenhigh, keeping 6 tatami warm
- Foot heating for home workingLap blankets vs panel heatersPer hour~¥0.7–18.6lap blanket to ceramic, low
- Hot-water bottle vs foot warmerCost and low-temperature burnsPer night~¥4.7 vs ¥0.12 L at 80°C / warmer high 30 min
Costs use ¥31/kWh. Each guide lists its sources and conditions.
Professor Plug: every guide has an electricity cost calculator — using real-use figures, not catalog maximums.
New to Japan?
Outside Hokkaido, homes here usually heat only the room in use rather than the whole house, household power is 100V, and appliance manuals are usually in Japanese. Each guide has a "Good to know if you live in Japan" section for exactly this. See About us for how we check information and how we make money.
Source on heating habits: "Disparities of indoor temperature in winter: A cross-sectional analysis of the Nationwide Smart Wellness Housing Survey in Japan" (Indoor Air; PMC7689703).
日本語版はこちら