Gas Boiler Replacements & Upgrades From Worcester Approved Installer Phone: 01-4670488

Boiler Replacement

Gas Boilers Dublin are Worcester Approved Installers - get an extended seven year guarantee when you get a replacement boiler from us -  Phone: 01-4670488

Upgrade and Save


We recommend Worcester Bosch for new and replacement gas boilers. As Worcester Bosch accredited installers we offer a 7-year manufacturer's warranty on all Worcester Bosch high-energy efficiency condensing boiler upgrades, along with:
Worcester Bosch Accredited Installer (WAI)

SEAI Registered Installers

Also, as we are Sustainable Energy Authority of Ireland (SEAI) Registered Installers, you will be eligible for a grant towards the cost of your upgrade under the SEAI Better Energy Homes Scheme.
There are 3 different types of boiler, combi, regular or system. All have high energy efficiency ratings and offer Worcester extended guarantees and reliability, installed by Gas Boilers Dublin
Diagram of a house with a combi boiler. Combi boilers provide heating and hot water directly from the boiler and are most suitable if you have very little loft space and live in a flat or bungalow - installed by Gas Boilers Dublin

Diagram of a house with a regular boiler. Regular boilers (also known as 'conventional' boilers) heat your central heating system directly and produce hot water for your cylinder -  installed by Gas Boilers Dublin

Which Boiler Type is Best for You?

There are 3 different types of boiler:
Combi boilers provide heating and hot water directly from the boiler and are most suitable if you have very little loft space and live in a flat or bungalow. They are particularly advantageous because they provide hot water on tap without waiting for it to heat up.

If your home has more than 2 bathrooms or your main water pressure is low then you would need a regular or system boiler. Regular boilers (also known as 'conventional' boilers) heat your central heating system directly and produce hot water for your cylinder.

In the bottom diagram is an example of a central heating and hot water system layout using a regular boiler. A typical regular boiler system incorporates a boiler, extended controls, a hot water cylinder which is often fed by a cold water storage cistern located in the loft and a feed and expansion cistern - also located in the loft.

Replacing an Old Boiler

If you want to replace an old boiler to improve an existing conventional central heating system then you could upgrade to regular, system or combi boiler, depending on your property and lifestyle.

If you are replacing an older model of boiler, the chances are that you will have a regular (also known as 'conventional') boiler, however, if your lifestyle or property has changed then you might want to consider a new type of boiler. Have your heating and hot water needs changed since your current boiler was fitted i.e. are there more or fewer residents using the hot water? Have you added an extension or a loft conversion?

When replacing your boiler, we recommend system flushing and installing a System Filter for additional system protection, to ensure maximum heating system efficiency over time and for an extra year's warranty.

Improved heating control options can provide an even more efficient heating system and save extra energy and money.

Contact us for the professional advice, free system survey and estimate for your heating system upgrade from a Registered Gas Installer and Worcester Accredited Installer.