Solar Hot Water Systems

Featuring the best solar hot water systems in New Zealand

Solar hot water systems capture thermal energy from the sun through a cluster of solar panels and a storage tank to heat water. Two panels are sufficient for a four-person household. Four square meters are needed to install two panels and a 300-360L tank. This system makes it easy for hot water heating in the winter and throughout the year. Though they do require a bit of investment upfront, they are energy-efficient, durable, and do not require much ongoing maintenance. Only the solar hot water systems in New Zealand are featured on ArchiPro, an important part of a broader range of hot water heating solutions to consider for your home.

Types of solar heating systems 

Direct circulation systems

They pump and circulate water within a home through the collectors. They are best for places that don't experience freezing cold weather. 

Indirect circulation systems

These circulation systems use pumps to circulate non-freezing fluid through collectors and a heat exchanger to heat water.

Integral collector-storage passive systems

The storage tank in a passive solar water heating system is designed to retain solar heat, efficiently supplying hot water to the plumbing system. 

Thermosyphon systems

Hot water is heated in a collector on the roof when the faucet is opened. It then gushes through the plumbing system. This system's capacity is 40 gallons. 

How to choose a solar hot water heater

Choosing a solar hot water heater involves several key considerations. First, assess your household's hot water usage to determine the appropriate system size. Evaluate your location's sunlight availability, as this impacts system performance. Choose the right type of solar collector—flat plate collectors are cost-effective for moderate climates, while evacuated tube collectors excel in colder regions. Look for available incentives or rebates to offset installation costs. Ensure the system has a good warranty and reliable support. Finally, consult a reputable installer for professional advice and optimal system integration. By considering these factors, you can select an efficient and cost-effective solar hot water heater for your home.

Ongoing maintenance

While solar hot water systems are generally low maintenance, it's important to implement a few maintenance practices upon installation. Regular maintenance checks are necessary for hot water cylinders. Every six months, both hot and cold relief valves should be flushed and cleared to ensure they function correctly. Collector panels need to be inspected occasionally for any leaks and should be washed regularly to maintain their efficiency. Additionally, any damaged glazing on the panels should be replaced immediately to prevent further issues.

Other hot water heating products that you might need

When considering hot water heater solutions, several options exist beyond solar hot water systems. An electric heater is a popular option due to its easy installation and ability to produce instant heat. If long-term savings are your priority, then a gas heater is a great choice for its minimal repairs and inexpensive fuel source. However, you can also go with a boiler, a time-tested popular option due to its quiet operation and fuel flexibility, allowing you to choose between electricity, gas, or oil.