Types of Hot Water Systems

Hot water is one of those things we tend to take for granted, especially after a long day. However, if you’re looking to upgrade your current system or looking to build your dream home, it’s important to understand how hot water systems work and what your options are.

The most common options are gas (LPG or natural), electricity, and solar. You’ll also find different types of hot water systems such as storage systems and continuous flow or instantaneous models. Storage models heat and store water in an insulated tank for use when required. These tanks can be made from copper, glass (enamel) lined steel or stainless steel. Most storage models have a sacrificial anode to reduce tank corrosion and warranties are generally up to 10 years.

Electric models are energy efficient and produce no greenhouse gas emissions, making them an environmentally responsible option. Traditionally, they have used a heat pump to provide a constant stream of hot water, but now there are also continuous flow models that don’t need a booster or heat pump. The only drawback with an electric system is that it can’t run simultaneously with other appliances such as a washing machine or dishwasher.

Local codes and regulations can impact the type of hot water system you choose, with rules covering everything from placement to ventilation. In addition, your home may have specific requirements based on energy efficiency and greenhouse gas emission limits.

The type of piping system used will also have an impact on the operational cost of your system. For example, one-pipe systems are common in colder climate areas, while two-pipe systems switch between heating and cooling by using supply and return piping alternately.

There are also recirculating systems that operate the heating and pumping processes at the same time to improve boiler efficiency. These systems can be controlled via thermostats or timers and use pumps that recirculate the water in the pipes to maintain a constant temperature, reducing energy costs.

While the initial capital investment is higher, these types of systems typically have lower running costs and offer greater energy efficiency than other types of systems. They are also easy to maintain and are highly scalable.

In terms of safety, it’s essential to keep in mind that all hot water systems require regular maintenance and safety checks. This includes checking for leaks, ensuring adequate ventilation to prevent carbon monoxide poisoning and installing pressure relief valves. In addition, local code and regulations will often require annual inspections by a qualified professional to ensure that the system is working properly.

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