Skip to content
Technician

—Comparing the options

Gas or electric water heater

The two heaters need different supplies and different installation. The choice is often made by what the property already has.

A gas water heater heats water with a gas burner and needs a gas supply and a flue; an electric water heater runs from the electrical supply and needs a suitable circuit. In a home where one supply is already present, the choice usually follows it, because adding the other can be a much larger job.

Comparison guides weigh two electrical options against each other and note where each one fits best.

For this site the electrical side is the point: an electric water heater draws a large, steady load and usually needs its own circuit and an isolator near the unit. Whether the existing board can carry that load, and where the heater will sit, decide whether the switch is straightforward.

01In short

The points that matter most

  • The supply decides it

    Gas needs a gas line and flue; electric needs a dedicated circuit.

  • The electrical load

    An electric heater draws a large load and usually needs its own circuit.

  • Where it fits

    Flue, space and access to the board all shape the choice.

02Detail

What each option involves

  • Gas water heater

    A gas supply and a flue, fitted where it can vent safely.

  • Electric water heater

    A dedicated circuit, an isolator and a position near the point of use.

  • The switch

    Changing from one to the other means capping or running a supply.

03Checklist

Before choosing

  • Check what is there

    Whether a gas line or a spare circuit is already available.

  • Check the board

    Whether the board can carry an electric heater circuit.

  • Decide the position

    Where the heater will sit, and whether it can vent or reach the circuit.

—In practice

Putting it into practice

Start from what is already in the property: a gas line or a spare electrical circuit. An electric heater needs its own circuit and an isolator, so check the board can carry it before committing. Where the heater will sit, and whether it can vent or reach the circuit, decide whether the switch is simple.

Common mistakes

Choosing before checking the supply
Picking a heater the property cannot support means undoing the choice. Check the gas line and the board first.
Sharing the heater circuit
An electric heater draws a large steady load and should not share a circuit with other appliances.

04Questions

Questions people ask

Can I switch from gas to electric?
Usually, if the board can take a dedicated circuit and the gas line can be capped safely. Both changes are checked before the new heater is chosen.
Does an electric heater need its own circuit?
Almost always, because it draws a large steady load. Sharing a circuit with other appliances risks overload and tripping.
Which is cheaper to run?
That depends on the supply rates, not a fixed rule. The supply already in the property is usually the bigger factor than a running-cost comparison.

05Related

Related guides

This guide sits under installation. All topics are on the guides page.

—NEXT

Choosing a water heater?

Tell us what is already fitted and where. We will check the supply and the board before you commit.

Send the details+971 56 181 0106WhatsAppInstallation