Water Heater: How to Choose the Right One, Where to Install It, and How to Keep It Efficient

When it comes to home comfort, the water heater is one of those things we often take for granted... until it stops working. And then? Cold water and panic.

To avoid that, it’s important to choose the right model, install it correctly, and do a bit of maintenance. In this guide, we’ll explain everything in simple terms.

How Many Liters Do You Really Need?

The first question people ask is: what capacity should the water heater have? It depends on the number of people in the house and how you use it. Here’s an easy table to remember:

If you only use the water heater for the sink or kitchen, 10–30 liters is enough. For a daily shower, go above 50 liters.

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Where Should a Water Heater Be Installed?

The location also matters. Here are the basic rules to get it right.

Electric Water Heater

• Can be installed in the bathroom, kitchen, or laundry room
• Requires a safe, properly grounded power outlet
• Must be mounted on sturdy walls (or with suitable brackets)

Gas Water Heater

• If installed indoors, air vents and a flue are required
• If installed outdoors, choose a sealed or frost-protected model
• Must be installed by a certified technician (DM 37/08 regulation)

Remember: to qualify for reduced VAT and tax bonuses, the installation must be certified!

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How to Keep Your Water Heater Efficient

A small effort from time to time can extend your water heater’s lifespan by years. Here’s what to do.

Regular Maintenance (every 6–12 months)

• Clean the anti-limescale filter (if present)
• Check the safety valve
• Inspect for any water leaks

Electric Water Heater

• Drain and remove limescale from the heating element
• Check the magnesium anode (replace every 1–2 years)

Gas Water Heater

• Inspect the burner, heat exchanger, and flame
• Ensure proper exhaust of combustion gases

When to Call a Technician

• No hot water even when it’s on
• Strange noises (gurgling, ticking...)
• Water leaks or flashing indicator lights

Visit the accessories and spare parts section for water heaters on Store PST

Conclusion: Small Steps, Big Results

A well-chosen and well-maintained water heater saves energy, lasts longer, and helps you avoid unpleasant surprises. It takes very little: attention when choosing, a bit of maintenance, and you’re all set.

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Need help choosing the right one?
Write to us at supporto@storepst.com or call us at +39 011 942 2006