This article will give an overview of what's involved in installing solar hot water in your home in Christchurch, and will explain how it could help you save money AND go green all at the same time!

Most of us in Christchurch were raised on hot water systems that were powered by electricity, gas or wood-fueled wetbacks, and we take for granted having to buy fuel to heat water for our homes and businesses. Why not consider solar water heating, where the fuel is free! Here are some answers to frequently asked questions about solar hot water systems.

Q What is solar water heating?

A Solar hot water systems use the direct heat and energy of the sun to heat water. No electricity is generated in this process (unlike a photovoltaic or PV solar system), it's just straight heat and energy from the sun that feeds into your water heater.

Q How do solar water heating systems work?

A Solar water heating systems have two main elements: storage tanks and solar collectors. The collectors utilise either flat panel collectors, which look similar to a skylight, or evacuated tube panels, which comprise a series of glass tubes that run lengthwise up and down the slope of your roof. These two types of systems have similar energy efficiency in Christchurch weather conditions.

Q In Christchurch's changeable climate, will solar water heating always provide enough hot water for our needs?

A Solar hot water systems can provide between 50-75% of the hot water required by most households, but they should also include a 'booster' system fueled by gas, electricity or a wetback for times when the weather is cold and cloudy or you're using more hot water than usual.

Q How much does a solar water heating system cost?

A Costs will vary depending on your particular circumstances and the system you install, but on average, converting an existing hot water system costs around $5,500 and a new system averages $7,300.

Q Is a solar water heating system right for everyone?

A No. You need to own your home, have a good quality roof that gets full sun, and be willing to make a long-term investment so that you're sure to recover the costs of installing the system.

A few reasons you should consider investing in a solar water heating system:

1. The fuel is free!

2. You are protected against rising energy costs.

3. By moving away from fossil fuels and the greenhouse gases they emit, you are reducing your 'carbon footprint' and helping to protect the environment.

4. It will increase the value of your home.

5. On average, hot water accounts for 30% of household energy use, and you can save $350-$450 per year by installing a solar hot water system.

For more detailed information on how solar hot water systems work, what different types are available, grants and subsidies that are offered in New Zealand and specifically for Christchurch, tips on what to look for when you're selecting an installer, how to ensure you get the best deal, and suggestions on other useful resources, visit http://ChristchurchSolarHotWater.com right away to download your free report.