The instant heater does one thing a storage heater cannot. It heats water only while the tap is open.

Nothing sits in a tank all day losing heat, waiting for somebody who might not come. In a country where electricity is both expensive and intermittent, that is a real argument and not a marketing one.

It also mounts on a wall in a small bathroom, needs no tank space, and delivers hot water in about three seconds.

People still get it wrong, because they buy on the price and discover the wiring afterwards.

The wiring is the decision

An instant heater does all its work in the few seconds water passes through it, which means applying a great deal of power in a very short time. These are among the heaviest single-point loads in a normal Nigerian home, comparable to or beyond a pressing iron.

That brings consequences, none of them optional.

A dedicated circuit from the distribution board, not a spur taken off the bathroom lighting. Cable sized for the load rather than whatever was left over from the last job, because undersized cable on a heavy continuous load is a fire and it is the most common dangerous installation we hear about. A correctly rated breaker, and an RCD, since this is a device that deliberately combines water and high current. And proper earthing, which is not negotiable on the one appliance in the house where a poor earth can be fatal rather than merely inconvenient.

None of that is expensive if it is planned. All of it is expensive once the heater is on the wall and the electrician arrives to find nothing to connect it to.

Wattage decides the shower, not the brand

The heater raises the temperature of water passing through it. How far it can raise it depends on two things. Its wattage, and how fast the water is moving.

Turn the tap up and the heater has less time with each litre, so the water comes out cooler. Turn it down and it comes out hotter.

Which is why a lower-wattage unit is not simply slower. It is a unit that gives you a weaker stream at bath temperature.

This is also why customers report a heater as faulty when it is behaving precisely as designed, and it is worth explaining at the point of sale rather than at the return counter.

What it costs to run

The honest comparison against a storage heater is not per hour. It is per use.

A storage heater spends the day keeping a tank warm whether anybody uses it or not. An instant heater draws heavily, briefly, only while the tap is open.

For one or two people taking a shower each in the morning, the instant heater almost always wins on the bill. For a large family running baths back to back, a storage system starts making sense again.

One thing to be plain about. This is a heating element, and heating elements are the worst possible load to put on an inverter. Nobody should be running one off a battery bank. It belongs on mains, and that is arithmetic rather than a criticism of the product.

What to check before ordering

Check	Why
Voltage and frequency	230V at 50Hz. A unit built for a 110V market is useless here and looks identical in a photograph.
Dry-burn protection	Cuts the element if no water is flowing. Nigeria has interrupted water supply, which makes this essential rather than optional.
Thermal cut-out	An independent safety cut-off, separate from the thermostat.
IP rating	It is going on a bathroom wall. Splash protection is not a luxury.
Element material	Decides how it copes with hard water and scale over a few years.

That second row deserves emphasis. Where water supply is intermittent, a heater that energises its element with nothing flowing through it will destroy itself and can do considerably worse. Dry-burn protection is the specification we check first.

Buying for resale

These sell steadily to households, and unusually well to hotels, guest houses, salons and small clinics, which want hot water at the point of use rather than a central system. That commercial segment buys in quantity and repeats.

Stock across wattages so a hand basin and a shower can each be matched properly. Consider stocking the taps that pair with them too, since customers search for those separately.

Our instant electric water heaters are specified around the safety cut-outs first and the wattage second.

Before the order

SONCAP certification arranged at origin. The 230V, 50Hz specification confirmed in writing rather than assumed. And on an appliance combining water with heavy current, inspecting the earthing and the safety cut-outs before shipment is the check we will not skip.

Tell us the application

Households, a hotel, or a salon, and how many points need hot water. We will match wattages to the job, confirm dry-burn protection with the supplier, and give you the landed cost per unit in naira with every line itemised.

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