Frequently Asked Questions

Q:

How efficient is it?

A:

Central heating is very efficient, but we need to use the word ‘effective’ in conjunction with ‘efficient’ when talking about a heating system. There is no point in installing a very efficient unit that doesn’t actually warm you or the room.

Central Heating systems are both efficient and effective when designed and installed correctly—they are proven the world over as the best system possible. Because different fuel types have different costs depending on where you are, choice of fuel also impacts efficiency. Central Heating New Zealand works with you to choose a fuel type that is right for your budget, your home and your location.

Q:

Which is better, underfloor or radiators?

A:

Each has its benefits. There is nothing like the luxury of underfloor systems, as ground-up heating is the best for the human body, but radiators have a faster response and can react quickly to New Zealand’s ever-changing weather conditions. We often install underfloor in the living areas and radiators in the bedroom areas, as a combination is often the best solution.

For more information, visit our heat distribution page.

Q:

What is in the radiators?

A:

Water is pumped through both the radiators and underfloor systems. The system is sealed so no water is consumed once the system is filled. The water is treated with an anti corrosive agent and sometimes an antifreeze agent.

Q:

Why is a warm water central heating system better than other forms of heating?

A:

A few key reasons are:

  • Warm water central heating can use a variety of fuels (like gas, diesel, electricity and geothermal energy) whereas with most heating you are limited to one type of energy, typically electricity. With warm water central heating, you can also change out your heat source in the future if there are significant changes to the supply or cost of fuel.
  • Water transfers energy at four times the rate of air, making warm water central heating so much more efficient than warm air systems.
  • Radiant heat (i.e., from a radiator or underfloor heating in a central heating system) is so much more comfortable to the human body than forced air. Warm air systems such as heat pumps are also drafty, noisy and there are often cold spots. None of these things happen with a warm water central heating system. It is just warm and comfortable, all the time!

For more information, visit our information for homeowners page.

Q:

What makes warm water central heating such a healthy heating option?

A:

Because there is no forced air flow, central heating is perfect for people with respiratory or allergy problems. We have even had customers comment that their asthma almost completely disappeared after the first winter with central heating! In addition, there are also no naked flames or elements to be a danger to children or the elderly.

A warm, dry home is a healthy home. Putting central heating in an old house can eliminate up to 80% of condensation problems. The heating system will dry out the structure of the home because dry air condenses less than damp air.

Q:

Is warm water central heating really affordable for the average homeowner?

A:

What price is comfort? Our customers are amazed by the warmth of their homes with central heating and can’t believe that they lived so long without it. Most people compare installation and running costs against heating one or two rooms in a house. It will cost more initially to install and run a central heating system than this method, but it will be less than replicating single heating appliances in every room to heat the whole house.

A gas central heating system with radiators in a small 3 bedroom house starts at approximately $10,000 installed. Compare this with one heat pump in the living room (approximately $4,000 installed) and another in the master bedroom (another $4,000 installed). So for $8,000 you can heat 2 rooms, or for $10,000 you can heat your whole house? The choice is obvious!

For more information, visit our How much does central heating cost? page.

Q:

How much does it cost to run a warm water central heating system?

A:

Each house has its own heat loss characteristics. We calculate the heat required to achieve at least 21 degrees in living areas and 17 degrees in bedrooms. We then know the kilowatt demand of the house, which allows us to work out how much it will cost to run the system on different fuel types.

For more information, visit our How much does central heating cost? page.

Q:

Can I use an existing log burner with a wetback to run radiators?

A:

Yes, you could run several radiators from a log burner with a wetback. If the wetback is currently heating a domestic hot water cylinder, and you wish this to continue also, the cylinder would have to be modified to separate the water going to the radiators from the water going to the cylinder. This is because the rust generated by the water in the steel radiators would infiltrate the potable/drinking water in the cylinder. For a new installation, you can get a cylinder that already has this coil or heat exchanger in it.

Q:

What is this ‘geothermal energy’ that I’ve heard so much about?

A:

It is the most exciting development in heating! Because it uses the earth’s energy to heat and cool your home, fuel costs are reduced. It is a future-focused way to heat your home because geothermal energy is a renewable resource.

For more information, visit our geothermal ground-source heat pumps page.

Q:

Why should I contact Central Heating New Zealand about heating my home?

A:

As one of the original central heating companies in NZ, and with an experienced team including sales people and engineers we are the experts! We import the products from Europe, supply to preferred installers nationwide, and have our own installation division who works in the Canterbury region. We know the products and systems inside out and can design the most efficient and effective systems for each individual home.

Q:

I’m interested in getting started. What now?

A:

Contact us so that we can fully understand your requirements and plans. We can develop a proposal that meets your heating needs, free of charge. Central Heating New Zealand has the skills, products and people to help you. We offer expert technical advice and customer support and import only the highest quality European products. Our team works hard to find the right heating system for your home, budget and lifestyle—contact our friendly team now!

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