You already looked at your light account and thought: "How is it so high if I don't even use it that much?" I also asked myself this question - until I find out that a single appliance can be responsible for until 30% of the value of your invoice.
If you want Save in Light Without having to stay in the dark, keep reading. energy villain And how to change it can cut your spending dramatically.

The Great Villain: The Electric Shower
Why does he consume so much?
⚡ High power: Between 5,000 and 7,500 watts (more than refrigerator, TV and lights together!).
⏳ Use Time: Long baths = absurd consumption.
💸 Account Impact: Can represent Up to 35% of the monthly energy expenditure.
Comparison:
- 1 15 min/day bath = ~ R$ 50 - R$ 80 per month on account.
- 1 family of 4 people = R$ 200 - R$ 300 Only in the shower!
The solution: Change for a gas or solar heater
1. Gas heater (better cost-benefit)
✅ Economy: Reduces the shower spending by Up to 70%.
💰 Investment: From R$ 800 (plus installation).
⚠ Careful: Requires piped gas structure (no cylinder).
2. Solar heater (best in the long run)
✅ Economy: Cut 100% of the consumption of the electric shower.
💰 Investment: High (R$ 3,000 - R$ 6,000), but pays in ~ 3 years.
☀ Requirement: Need roof with good solar incidence.
If you can't change it now, reduce consumption like this:
- Take shorter baths (10 min or less).
- Use the “summer” position in the shower (consumes less).
- Turn off the shower When rehearsing.
- Install a flow reducer (costs less than R$ 20).
Other appliances that weigh in the account (but less than the shower)
🔹 air conditioning
- Tip: Use in “Eco” mode and keep filters clean.
🔹 Old refrigerator
- Tip: Change for inverter models (save up to 50%).
🔹 Washing machine
- Tip: Wash with cold water and only use it with full load.
How much can you save?
Replacement | Monthly economy* |
---|---|
Electric Shower → Gas | R$ 100 - R$ 200 |
Electric Shower → Solar | R$ 150 - R$ 300 |
Common air conditioner → inverter | R$ 50 - R$ 100 |
*Estimated values for families of 3–4 people.
Conclusion: An investment that pays itself
Change electric shower it may seem expensive at first, but the return comes fast in light account.
And you, did you know that the shower was so consumer?
Which appliance increases your account? Comment below!
💡 Share this tip With whom it also suffers from highlights - the economy can start today!