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How Cost Efficient are Electric Hot Water Systems?


Note: this is a partnered post and consideration was received for its publication. Image: the inside of a hydraulically-operated two-stage tankless heater, heated by 3-phase electric power. CC-licensed image by Mattes.


The householder has two choices when it comes to hot water, and they are gas or electricity, with a minority of people using heating oil or other energy sources. In this energy conscious society we live in, people are becoming more concerned about the use of energy, and energy efficiency is on everyone’s mind.

Tank water systems

The traditional way to supply a home with hot water, is with a tank and a boiler to heat the water, which is then pumped wherever needed around the house. These systems can be either gas or electric, and the general consensus is that gas is more economical, depending on the efficiency of the heating system. These are the cheapest type of centrally located hot water systems, and will usually operate for 15-20 years, if properly maintained. The electrically powered systems will run on non-peak time electricity, which makes them more cost-effective.

Tankless water heating systems

These have become very popular as they only heat a small amount of water, rather than an entire tank, so if one wishes to take a shower, one doesn’t have to wait for the tank to be heated, and the energy used is much less. The water is heated as it passes through a heat exchanger, and is ideal for an office shower, or any area where small amounts of hot water are needed. These range in price, but are not expensive to run, and give instant hot water in reasonable amounts, although not enough to supply a large home. If a person in Western Australia wanted to have their system maintained, many hot water systems are serviced by Plumbdog, who are a leading Perth plumbing company. These are generally regarded as the most cost-efficient electric water heating systems available today.

A matter of preference

The cost difference between gas and electric is negligible, and some people prefer electric, as it is perhaps less dangerous. Gas usually involves re-supplying in bottles, whereas electric is on demand, and therefore more convenient. If a person inherits an electric hot water system, and wishes to change over to gas, this can be done, however the cost would be considerable, and possibly not worth it, if the electric system works efficiently.

A new installation

If a home owner wanted to install a new hot water system, the installation company would probably recommend gas, as it is slightly cheaper to run, and more eco-friendly than electricity. There are still many people who prefer a gas powered hot water system, and with running costs slightly lower, it is a popular choice. If a resident of Western Australia wanted electric hot water systems in Perth, there are qualified online plumbers who are on call round the clock to provide new installations and emergency repairs to existing systems, both gas and electric.

Electrically heated water systems are cost-efficient and durable in providing essential hot water for urban communities, and any reputable online plumber would be able to recommend a suitable system to heat the home.