A tankless water heater isn't one-size-fits-all.

Scenario 1: The Apartment

Space is your enemy. Every square foot counts.

A standard storage tank eats up roughly 60 × 60 cm of floor space. In a bathroom that's already tight, that's real estate you can't afford to lose.

An electric tankless unit mounts on the wall — about the size of a shoebox for a single-shower model. Even a whole-apartment unit is smaller than a briefcase. Mount it above the toilet, under the sink, or on any free wall.

What else matters in an apartment:

• Power limits. Most apartments have a 30–40 amp main breaker. A 5–7 kW unit draws 23–32 amps at 220V — near the limit. Check your panel before buying anything above 7 kW.
• Rental restrictions. If you're renting, confirm with the landlord before any electrical work. Plug-in or easy-swap units are safer bets than hardwired installations that need new circuits.
• Noise. Tankless units are silent when idle. No cycling, no rumbling tank. Your neighbors won't know it's there.
• IPX4 rated. In a small bathroom, water splashes. Make sure the unit is splash-proof — not just water-resistant.

Recommendation: A 5–7 kW electric tankless unit, wall-mounted in the bathroom, single-shower use. Compact size, no tank footprint, standard circuit compatible.

Scenario 2: The Villa or Multi-Bathroom House

You have space. But you also have demand.

A villa with two or three bathrooms, plus a kitchen, means hot water may be running in three places at once. A single 6 kW unit won't cut it — that's enough for one shower, not a whole house.

You have two options here:

Option A: One larger unit per floor or zone. Install an 8–12 kW unit for each bathroom cluster. Each handles its own shower and sink. The kitchen gets its own smaller unit under the sink. This keeps hot water close to every point of use — no waiting, no heat loss in long pipe runs.

Option B: A single high-power whole-house unit. A 15–21 kW electric tankless can supply multiple outlets simultaneously — provided your electrical panel can handle 63–95 amps. In most homes, this means a three-phase power supply and serious electrical upgrades.

For most villas, Option A is more practical. It distributes the load, avoids a single point of failure, and doesn't require a commercial-grade electrical setup.

What else matters in a villa:

• Pipe distance. Hot water loses heat as it travels. If your heater is in the basement and your shower is two floors up, you'll wait 30 seconds for warm water. Put heaters as close to bathrooms as possible.
• Water pressure. Large homes with multiple floors can have pressure drops at upper levels. Check your pressure before choosing a high-flow unit.
• Aesthetics. In a visible bathroom, a clean white unit with a digital display looks better than exposed pipes and a bulky tank.

Recommendation: One 8–12 kW unit per bathroom zone, plus a 3–5 kW under-sink unit for the kitchen. Distribute, don't centralize.

Instant hot water — no waiting for a tank to heat up 

Low electricity bills — especially if they pay utilities 

Compact size — more bathroom space is a real selling point 

Recommendation: A 5–7 kW tankless unit with rotary knob control, stainless steel heating element, and built-in ELCB. Wall-mounted, easy to replace, hard to break.

Why Anlabeier Covers All Three

Anlabeier makes tankless electric water heaters across the power range — from compact 3.5 kW under-sink units to high-output 12 kW models.

Stainless steel and cast aluminum heating elements handle hard water without degrading. IPX4-rated housings fit tight bathrooms without splash risk. Built-in ELCB, dry-heating cutoff, and overheat protection work automatically — no tenant training required.

And with CE, CB, ETL, and RoHS certifications, every unit meets international standards whether it's going into a rental in Dubai, an apartment in São Paulo, or a villa in Manila.

One brand. Every scenario.

Conclusion

The right water heater isn't about what's popular. It's about what fits your walls, your wiring, and your life.

Apartment? Go compact, wall-mounted, 5–7 kW.

Villa? Distribute the load — one unit per bathroom zone.

Rental? Keep it simple, safe, and built to survive neglect.

Match the machine to the home, and it'll do its job quietly for years — no matter who's turning the knob.