If your budget is not abundant, you can still buy used water heaters . But how to choose a heater to ensure quality is still a problem that many people wonder about. You can refer to some of the experiences below.
1. Choose the right bottle for your needs
When buying a used water heater, you need to choose a tank with the appropriate capacity and power for your needs and purposes.
If your family is small and only uses it for showering, you should choose 10 liter, 15 liter and 30 liter tanks to save electricity. If you use it for the bathtub or all the faucets in the house, you should use tanks with a capacity of 50 liter, 80 liter and 100 liter.
Capacity of some types of water heaters:
- 15 liter bottle for families of 1-2 people.
- 20 liter bottle for family of 2-3 people.
- 30 liter tank for family of 3-4 people.
- 45 liter tank for family of 4-5 people.
Regarding the capacity of the kettle, if your family has few people, you should choose a kettle with a capacity of 1,500W to 2,500W. If your family has more than 4 people, you should choose a kettle with a capacity of 3,000W-4,000W.
2. Choose a reputable brand
Famous water heater brands such as Ferroli, Ariston, Picenza, Electrolux,… all have good warranty policies, ensuring prestige and quality during use. You should buy branded water heaters to ensure safety, you should not buy products of unknown origin, floating goods on the market.
3. The kettle heats up quickly
When buying a used water heater, you should test the heater to evaluate the heating speed before making a decision. Many old water heaters do not heat up quickly, so when buying, you need to pay attention to this factor of the heater.
4. The bottle has the ability to adjust the temperature

The temperature control function helps you measure the hotness of the water. If this function does not work well or is broken, you should not buy it. Therefore, when buying a used water heater, you should choose a heater with the ability to adjust the temperature.
Some other experiences
- Check the water heater shell for damage or cracks.
- You should choose a bottle with as long a warranty period as possible.
- Before buying a tank, you should ask for a test run of the water heater to check more accurately and see if many features are working properly or not.
Don't forget to pocket the above tips to buy a used but still high quality water heater!