Gas Boilers | Gas Boiler Service | Gas Boiler Repairs

Modern, high efficiency boilerModern gas boilers are quieter, heat up quicker and use a lot less fuel than their 20 year old predecessors. They are also more  reliable and cost less to maintain.

Upgrading your central heating with a modern high efficiency gas boiler combined with heat zone control system can halve your fuel bills.

Electronic timers that control heating and hot water independently combined with room thermostats, often part of the radiator valve, increase boiler efficiency gains even more.

Old, low-efficiency gas boilers:

  • Natural draft that creates a flow of combustion gases
  • Continuous pilot light that sometimes goes off
  • Heavy heat exchanger
  • 68%–72% efficiency rating

Mid-efficiency gas boilers:

  • Exhaust fan controls the flow of combustion air and combustion gases more precisely
  • Electronic ignition (no pilot light)
  • Compact size and lighter weight to reduce cycling losses
  • Small-diameter flue pipe
  • 80%–83% efficiency rating

High-efficiency gas boilers:

  • Condensing flue gases in a second heat exchanger for extra efficiency
  • Sealed combustion
  • 90%–97% efficiency rating


Understanding boiler types

There are several types of boilers to choose from, each with their own particular advantages, so it’s important to consider which one is best suited to your lifestyle:

  • combination boilers
  • system boilers
  • heat-only boilers

Combination boilers

‘Combination’ boilers deliver hot water on demand and are very economical to run because they don’t use an external hot water tank. The fact they don’t take up much space and you never have to wait for hot water makes them a popular choice, especially in households where it’s not possible to have a storage tank.

System boilers

A system boiler is a boiler containing all the necessary components for the central heating system to work built in to one unit. It has the pump, expansion vessel, safety valve and controls, great for apartments and other buildings where space is at a premium as they are quite compact.

Heat only boilers

A heat only (or open vent) boiler only has a heat exchanger and control unit, all other central heating components, for example, pump, expansion vessel, safety valve are all separate.

A heat only Boiler allows you to upgrade your system components at whatever pace your budget permits. It gives you the opportunity to;

  • Add solar panels to your system,
  • Convert your system to pressurised,
  • Add under floor heating
  • Or just keep it simple.


Boiler Installation, Servicing and Repair

Watertech offers gas boiler installation, boiler servicing and repairs. If you require gas boiler replacement or service in the Dublin area, contact us.


24/7 Plumbing Emergency

Watertech offers 24/7 plumbing emergency services such as burst pipes, broken pumps, faulty boilers, leaking taps and more.

If you have a water-related problem in your home or office,

Call Watertech

086 347 2412