You can reduce monthly water, electricity, and gas costs in rental homes by ¥3,000–¥8,000 through smart strategies. From practical water and energy-saving techniques you can start using immediately at no cost, to how to choose energy-saving equipment suitable for rentals, a rental property expert explains everything in practical detail.
Reviewed by: Nobuyuki MoriPresident, M-Assets Co., Ltd. / Licensed Real Estate Transaction Specialist (Miyagi #018212)
Average monthly utilities for a one-person rental home are roughly ¥5,000–¥8,000 for electricity, ¥3,000–¥5,000 for gas, and ¥2,000–¥3,000 for water (total ¥10,000–¥16,000/month). With smart strategies, savings of approximately ¥3,000–¥8,000 monthly are achievable. Annually, you can expect savings of close to ¥100,000.
Even in rentals, you can improve winter cold and summer heat with restoration-friendly insulation DIY. This guide explains specific insulation solutions for windows, gaps, and floors by tool type.
Windows are the primary source of heat loss and gain in rental housing. By selecting and installing insulation films or sheets correctly, you can significantly reduce winter cold and summer heat while lowering utility costs. This article explains how to choose products that allow restoration to original condition and shares installation tips.
From leveraging deregulated power and gas markets to daily usage habits, we comprehensively explain practical utility-saving strategies for rental apartments. From living alone to couples, we deliver "immediately actionable tips" with concrete figures and step-by-step instructions.
Since rental homes don't allow thermal insulation renovations or major equipment upgrades, the main strategies are "behavioral optimization" and "using small energy-saving gadgets."
Optimize Your Air Conditioner Use Heating and cooling costs account for the largest share—30–40% of total electricity usage.
Cut Standby Power Standby power accounts for approximately 5–6% of household electricity consumption.
Switch Lighting to LED For replaceable bulb-type fixtures, switching to LED reduces power consumption by approximately 70–80%. When you move out, you can exchange the LED for the original bulb and restore the space to its original condition, so there's no issue with restoration to original condition.
Review Refrigerator Settings and Placement
Replace Your Showerhead with a Water-Saving Model You can replace the showerhead yourself (you can switch it back when you move out, so there's no issue for rentals). Water-saving showerheads are 30–50% more efficient than standard models and pay for themselves in 2–3 months.
Examples of recommended water-saving showerheads:
Conserving Water in the Toilet
Water-Saving Laundry Tips
Water Saving When Washing Dishes
Lower Bathroom Gas Costs
Saving on Gas Cooking
Here's a summary of energy-saving gadgets you can use while respecting your restoration to original condition obligations.
| Gadget | Effect | Cost |
|---|---|---|
| Water-Saving Showerhead | Reduces water bills by 30–50% | ¥3,000–¥8,000 |
| LED Bulbs (bring your own/swap) | Reduces lighting costs by 70% | ¥500–¥2,000/bulb |
| Switched Power Strip | Cuts standby power | ¥1,500–¥3,000 |
| Window Insulation Film | Improves heating/cooling efficiency by 10–20% | ¥1,000–¥3,000 |
| Thermal Curtains/Linings | Improves heating/cooling efficiency | ¥3,000–¥10,000 |
| Circulator Fan | Improves AC efficiency | ¥3,000–¥8,000 |
Since deregulation of Japan's electricity market in 2016, renters can also freely choose their electric company (except when the entire building is served by a single power contract). Switching to a new electricity provider can save about ¥500–¥2,000 per month in some cases. Check comparison sites at moving time.
Saving on utilities in rental homes centers on "behavioral optimization" and "using small energy-saving gadgets." It's most efficient to start with low-investment, quick-payback measures like cleaning AC filters, switching to LEDs, and installing a water-saving showerhead. Monthly savings of ¥3,000–¥8,000 are entirely achievable, which amounts to roughly the cost of one vacation per year.
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