No Hot Water on Move-In Day? How Foreigners Open Utilities in Japan & Book Gas Technicians Without Panic

 

No Hot Water on Move-In Day? How Foreigners Open Utilities in Japan & Book Gas Technicians Without Panic

"I moved into my Tokyo apartment on a Saturday in March and immediately tried to take a shower after carrying boxes up four flights of stairs. Nothing but cold water. I checked the water heater panel and it showed an error code I couldn't read. I called my real estate agent who told me gas requires a technician visit and the next available appointment wasn't until Tuesday. I spent three days heating water in a kettle for basic washing. When I mentioned it to a coworker that week she said she'd booked her gas inspection two weeks before moving in and had hot water from the first hour. I had no idea that was something you had to schedule in advance."

Updated September 2026  |  Written by Luna H

You finally picked up the keys to your new Japanese apartment, carried your heavy luggage up the stairs, and stepped into your new home ready to take a hot shower. You turn on the faucet, but only freezing cold water pours out. You flick the water heater control panel, and it displays an error code. Why? Because unlike electricity or water, gas in Japan cannot be turned on remotely—it requires a mandatory, in-person safety inspection with a technician before your hot water or stove will work.

Every year, thousands of newly arrived expats and international students freeze through their first night in Japan because they didn't know the rules for utility setup. Here is the ultimate, practical guide on how to set up electricity, water, and gas in Japan, book your mandatory gas inspection without speaking Japanese, and avoid common move-in traps.

Why Gas Setup Catch Foreigners Off Guard

Setting up Japanese utilities isn't handled as a single package; electricity, water, and gas are managed by separate entities. Understanding the difference between these services will save you days of frustration:

  • Electricity (Denki): Remote & Immediate: In most apartments, electricity works the moment you flip the main circuit breaker panel. You simply need to register your contract online (with providers like TEPCO or KEPCO) within a few days of moving in.
  • Water (Suido): Municipal & Pre-Connected: Water is usually running when you arrive. You just fill out the municipal water meter card left in your mailbox or register online with your local city water bureau.
  • Gas (Gasu): Mandatory In-Person Opening (Tachiai): Due to strict Japanese fire and earthquake safety laws, a licensed gas technician must enter your apartment, inspect your gas stove connection, check for leaks, and physically ignite your water heater. If you are not at home during the appointment, the gas remains locked off.

Step-by-Step Guide: Booking Your Gas Opening (Tachiai)

Because gas technicians book up fast—especially during peak moving seasons (March–April and September)—follow this timeline to ensure you have hot water on Day 1:

Step 1: Identify Your Gas Type First

Check your lease agreement or ask your real estate agent whether your apartment uses City Gas (都市ガス - Toshi Gas) or Propane Gas (LPガス - LPG). City gas uses standard municipal pipelines, while LPG uses physical gas tanks outside the building. You cannot connect a city gas stove to an LPG outlet, as doing so poses a severe fire hazard.

Step 2: Reserve Your Inspection 1 to 2 Weeks Before Moving In

Do not wait until move-in day! Visit the official website of your regional supplier (e.g., Tokyo Gas, Osaka Gas, or Saibu Gas) and select Start Service (開栓 - Kaisen).

  • Select Your Time Slot: You will choose a 2-hour window (e.g., 1:00 PM – 3:00 PM) on your move-in date.
  • Input Your Address Accurately: Enter your exact building name and room number. Misspelling your apartment number will cause the technician to cancel the visit.

Step 3: What Happens During the Technician's Visit

The inspection takes approximately 15 to 20 minutes. The technician will:

  1. Check your gas meter outside and test gas pressure.
  2. Enter your apartment, inspect the kitchen stove valves, and bleed air from the water heater lines.
  3. Ask you to sign a safety confirmation document.

Workarounds If You Do Not Speak Japanese

If you cannot speak Japanese and feel anxious about booking or hosting the gas technician, use these proven workarounds:

  • Use Multilingual Three-Way Call Services: Major providers like Tokyo Gas offer free interpretation services. When calling their customer service line, request an English interpreter. They will connect a three-way operator to help you schedule your appointment.
  • Use Web Application Forms with Google Translate: Almost all major gas companies allow online scheduling via web forms. Using browser translation tools is much easier and more accurate than trying to explain your address over the phone.
  • Have Your Real Estate Agent Present: If your move-in time aligns with your key handover, ask your bilingual estate agent or landlord if they can stay in the apartment for the 15-minute inspection window.

Common Utility Traps to Avoid in Japan

  • Buying the Wrong Stove Top (Gas Burner): If your apartment does not come with a built-in stove, you must buy a portable one. Double-check whether it says 都市ガス (Toshi Gas - 12A/13A) or LPG (プロパンガス) on the box before buying it at an electronics store like Bic Camera.
  • Forgetting to Provide a Japanese Contact Number: Gas technicians will call your mobile number 10–15 minutes before arriving. If you do not answer or do not have a working Japanese phone number yet, provide your employer's or school's contact number on the web form.
  • The Double Billing Moving Trap: If you move within Japan, remember that utility contracts do not transfer automatically. You must file a Discontinuation (Kaiyaku) notice for your old address, or you will be charged for both apartments simultaneously.

Summary: Plan Ahead for a Comfortable First Night

Moving into a new Japanese apartment is exciting, but cold showers can instantly ruin your first day. By scheduling your mandatory gas inspection at least a week before your move, verifying your gas type, and using English web portals or three-way translation services, you can ensure your electricity, water, and hot water are fully operational from the moment you step through the door.

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