Gas Central Heating Wellington

History

Warm air heating has been around  along time the Romans used to heat their floors by lighting a fire at one end of the building and putting a flue at the other end and allowing the hot air to run under the floor heating the floor. Its a little different now we put ducting under the floor with different materials and there is a thermostat now.

We repair service and install gas central heating Wellington wide. We maintain most brands and recommend brands that have good service histories and which have low running costs.

What are the Types of Central Heating?

Central heating is usually of two types either hot water or warm air. This means sending hot air to grills or hot water to radiators from a central boiler or furnace. Some hot water systems also generate domestic hot water as well. This is not common in New Zealand. Most homes are retrofitted so they already have a domestic water heater such as Rinnai Infinity or an electric storage tank. The combi systems are much more expensive so it is not so economical to ditch the existing hot water heating system.

How Does Central Heating Work?

The occupant selects the desired temperature and the times the central heating will turn on usually in the mornings before getting up. The central heating can be turned off if required or let it go on if the temperature drops below that desired temperature. Central heating is a good choice for unpredictable weather conditions like in Wellington. Ducted gas heating is well known for most buildings.

Advantages and Disadvantages of Central Heating Wellington

Advantages and Disadvantages of Central Heating

Central Heating usually heats the entire building. For warm air, there are systems to close off areas such as Zone 1, Zone 2 and so on. These zones often refer to rooms of the house. With water radiators you can close off each room and put rooms on thermostats. Spot heating is a single gas fire or electric heating that heats that area or room.

Buildings that have low insulation like no double glazing, there is high heat loss in central heating. Spot heating may be better where the heater is a radiant type.

Most old homes are not insulated because the insulation was not required as a Building code requirement in past years. Central heating is a good option if you want to control the heating level or temperature in your entire home. It is also good if you spend most of your time at home. You can set a time and temperature using a thermostat for central heating. Even though central heating is a good heating system, it can cost a lot more than you think. For free central heating recommendations, call Southern Plumbing on 0800 484 353.

Maintaining Central Heating Efficiency

It is important to have your central heating unit maintained yearly. Ducting can come apart and filters can be clogged. This can cause high energy bills. There can be different problems that you might face with your heating system. Cats love central heating ducting and often lay on it squashing the ducts till no air passes. Cats and rodents like scratching the ducting tearing the outer insulation, this often completely destroys the ducting. Check the ducting every season before winter. We also recommend checking flue and unit for rust and any other wear and tear. During our checks, we sometimes find outlets not working, disconnected ducting, frugal installers and more.

 

Recommended Efficiency Unit

Gas central heating units come in low, medium and high-efficiency units. It is important to use high-efficiency units where they are used a lot otherwise the gas bills will be high. It pays to buy the higher priced units.

 
We service different central heating brands like Vulcan, Braemar, Rinnai, Brivis, and more.

Central Heating Installation

  • Furnaces can be external and internal.
  • Some models need flues that pass up to roof level whereas more efficient models have a plastic flue that passes through the wall at a low level if mounted under the house.
  • Natural Gas or LPG.
  • Ducting is run from the furnace to a return air grill in the hall via a cupboard.
  • The ducts are usually positioned under a window.
  • Outlets can be positioned in the bathroom where there is not likely to be water splashing on them.
  • Furnaces need an electric connection for the fan and often for ignition and control.
  • The thermostat is usually mounted on the hall.

Warm Air Central Heating Pricing Wellington

Furnaces are available in three different efficiency levels, such as low, medium and high. If you want a cheap furnace choose low efficiency system but it has higher running costs and installation.

Furnaces have two location types, Internal and External. Furnaces come in different capacities. For domestic buildings, 60Mj input through to 200 Mj input for larger homes. The most common furnaces are 90Mj and 120Mj.

central heating Wellington plumbers NZ

Warm Air Central Heating Pricing Wellington

Furnaces are available in three different efficiency levels, such as low, medium and high. If you want a cheap furnace choose low efficiency system but it has higher running costs and installation.

Furnaces have two location types, Internal and External. Furnaces come in different capacities. For domestic buildings, 60Mj input through to 200 Mj input for larger homes. The most common furnaces are 90Mj and 120Mj.

Warm Air Furnaces

Furnace Pricing Table 

Prices of Furnaces: Domestic sizes (larger furnaces can be obtained for larger buildings, contact us to know more).

Input Sizes

 Efficiency 90 Mj 120 Mj
Low Efficiency Furnace  around 60%  $2,600 $3,500
 Medium Efficiency Furnace around 80-85%  $3,000  $4,500
 High Efficiency above 90%  $5,000  $8,000

(ducting and installation is added to this)

There are external and internal models add 5% for external models.

Warm Air Gas Central Heating Installation

Gas pipe connection – often from the meter if no pipe is close by.

Electrical connection – usually an electrical hot point.

Warm Air Ducting Installation

In ceiling prices

  • 6 Outlet system
  • 9 Outlet system
  • 11 Outlet system

Under floor prices dependent on if access available with out digging, 450mm space under joists.

Warm Air Central Heating Extras

  • Thermostat – this is a standard temperature only controller. No on/off timer.
  • Wired Thermostat/ Controller
  • Wireless Thermostat/ Controller
  • Zone Dampers – Small Medium and large diameter. (for turning on and off warm air to different areas of the building.)

Wall Radiators Central Heating

This type of central heating requires the radiators to fit on the walls and piping run back to a boiler. The radiators are usually fitted on an outside wall under a window. Each radiator can have a thermostat and a shut-off valve. Wall radiators are designed keeping in mind the flexible heating options for homes. It is a typical preference for most people in New Zealand due to the changeable weather conditions. Radiators are good at reducing health hazards in the house. They are safe, silent and responsive. You don’t have to worry about children or pets around radiators.

Alternatives to Central Heating

Rinnai’s new powerful Rinnai 1005 Energy Saver has an 8kw output for large rooms or you could put a heat transfer system to send heat to other rooms. Up to two other rooms in the case of a Rinnai 1004.

Gas Central Heating Wellington - Gas Ducted Central Heating System NZ