Wood is Good

Why use wood to heat your home?

The decision on the type of heating you install in your home is one of the biggest contributions you can make to the environment. Many people think that heat from gas or electricity is the right choice, but gas produces carbon and is not a renewable resource. For example, about a third of New Zealand’s electricity comes from burning coal, gas and oil at power stations - a process which produces greenhouse gases leading to climate change.

One of the cheapest and environmentally sound home-heating options is firewood in a modern wood burner – especially if you can get free firewood. Along with wind and hydro, wood is one of the few sustainable carbon-neutral home-heating options. But to get the most heat (and the least pollution), it must be burned hot and in a specially designed firebox. The firewood must also be dry and the pieces not too big (less than 11cm in diameter).

The natural gas, electricity and LPG costs shown do not include fixed charges but they do include GST.

Firewood is pine and its costs are from the February 2015 survey of firewood prices. Electricity and natural gas prices are from Powerswitch. Other costs are from pricing data collected during February 2015. All costs are shown as ranges because they reflect prices in different areas and from different suppliers. Source: https://www.consumer.org.nz/topics/home-energy-costs

Get the best out of your wood

Most people know burning unseasoned (wet) wood is not as good as burning well-seasoned (dry) wood but most are surprised when they learn the heat output difference between wet and dry wood. Put simply, the greater the moisture content, the less energy output, therefore it is critical to burn correctly seasoned wood. Burning wood with a moisture content of 50% and above, will produce half the heat output of well-seasoned wood. You will be using twice the amount of wood to get the same amount of heat, costing you twice as much. As a rule of thumb, softwood takes a minimum of 12 months to season properly before use.

Wood is carbon neutral, releasing the same amount of CO2 when burnt, as if it were left to decompose. CO2 produced by burning wood is re-absorbed by plants and trees through photosynthesis, helping the trees to grow and produce oxygen for us to breathe. New Zealand’s climate produces a lush green environment, ideal for pine plantations which ensures long term availability of cost effective fuel. And that’s why you’ll find that wood is the world’s #1 renewable fuel.

Utilise your wood fire to heat your hot water

Heating the water for your daily shower can cost a surprising amount of money. Luckily most Metro's can be equipped with a wetback system to heat household hot water and provide security against electricity restrictions or outages. We have a range of wetbacks available to assist or fulfil your water heating needs. Check with your local Metro dealer about installing a wetback with your Metro and start saving on water heating costs.

The natural gas, electricity and LPG costs shown do not include fixed charges but they do include GST. 

These calculations assume a 10-minute shower uses 40L of hot water and a water temperature of 60°C. These costs do not include fixed charges for natural gas, electricity and LPG but they do include GST. Firewood is pine and its costs are from the February 2015 survey of firewood prices. Electricity and natural gas prices are from Powerswitch. Other costs are from pricing data collected during February 2015. All costs are shown as ranges because they reflect prices in different areas and from different suppliers. Source: https://www.consumer.org.nz/topics/water-heating-options