Gas Boiler Replacement Cost

How much does new gas boiler in Ireland in 2021?

Determining the cost of installing a new high efficient condensing gas boiler may not be so straightforward for the average homeowner. There are a wide range of factors to be considered before committing to a boiler type, brand and price.

We have put together a detailed guide that will give you an idea on estimated boiler installation costs, plus any additional information that may be relative.

Read through our detailed guide to find out how much a new gas boiler will cost. We have covered boiler the most common boiler installations like, gas back boiler or floor standing boiler, changing over from oil to gas, installing a gas combi boiler or a direct like for like gas boiler replacement.

Our most popular Gas Boiler installation offers

Direct Gas Boiler Replacement Costs (System Boilers)

System boilers are the most popular domestic boiler choice in Ireland. Designed for sealed heating systems these boilers contain all the main components such as the circulation pump, expansion vessel, automatic bypass and pressure relief valve within the boiler casing. This allows for a quicker installation time, and is quite often less of an outlay when compared to regular boiler systems.

Estimated costs for the replacement of your existing gas boiler with a new high efficient condensing gas system boiler to the same location on an external wall, using existing heating controls, piping and components.

The above costs are estimates only as we have assumed a standard installation setup. There may be additional boiler installation costs. See below for example 

Location – The location of your existing gas boiler may impact the costings, this is particulary true if you current gas boiler is located on an internal wall of floor with no direct access to the outside for flue termination. If you current boiler is located in the attic space the flue ( boiler exhaust) may be terminating at roof level. This will increase installation costs.

Gas Pipe Size -  The current gas pipe may be undersized and may need upgrading

Condesate Disposal – Your new gas boiler will require a nearby drain for the safe disposal of the condesate by product. If a drain pipe is not accessible you may need a purpose provided soakaway installed or condensate pump.

Electrical Controls -  If you require new heating controls, these additional measures will increase the installation costs

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Want a more accurate gas boiler installation quote? 

Simply contact our sales department on 014433005 to arrange for a free no obligation fixed price quotation

Combination Boiler Installation Price. 

A combination boiler provides both heating and hot water, Combination boilers heat the hot water instantly when their is a demand (Similar to an electric shower). With a combination boiler there is no cylinder required, combination boilers are ideal for apartments or homes with 1 bathroom.

For combination boilers we have created two estimate charts, 1) for the the direct replacement of a combination boiler with a new high efficentmodel and 2) for the replacement of a regular boiler with a combination boiler.

Direct Combination Boiler Replacement

Boiler Brand	Boiler Model	KW Output to HTG	KW Output To HW	Hot Water Flow Rate L/MIN	Warranty	Prices From
	Greenstar 30 SI Compact	24 KW	30 KW	10.7 Litres per min	10 Years	€2590
	Greenstar 36 CDI Compact	24 KW	36 KW	12.9 Litres per min	10 Years	€2790
	Greenstar 42 CDI Classic	30 KW	42 KW	15 litres per min	10 Years	€3395
	Logic C 35	24 KW	36 kw	14.5 litres per min	5 Years	€2395

Replacing a Regular Gas Boiler and hot water cylinder with a Combi Boiler

Installation Location	Duration of Works	Prices From
Existing Boiler Location	1-2 Days	€2995
New Boiler Location	2-3 Days	€3495

The above costings are estimates only and are for guidance only, additional factors may impact on costings.

If you are considering replacing your existing gas boiler and hot water cylinder with a combination boiler important consideration must be made to the following.

• Gas Pipe Size -  If your current gas boiler KW is below 24KW you may need to upgrade your gas line. A combination boiler heats the water instantly on demand, this instant heat up of domestic hot water requires quite a large amount of energy. Therefore depending on the current gas pipe size, proximity to the gas meter and current gas appliances being served. You may need to upgrade your gas supply pipe to meet the additional energy demands.
• Removal of Hot Water Cylinder -  With a combination gas boiler, there is no need for a stored hot water cylinder. Although the removal of your current hot water cylinder is straight forward, the piping will need to be altered to accept the system arrangement. The hot pipe will need to be redirected from the current cylinder location to the combi boiler.
• Flow Rate -  Combination boilers are fantastic for smaller homes and families, the larger the hot water demand the less likely a combination boiler is the right choice for your home. Combi boilers typically produce between 10 - 15 litres of water per min at 40 degrees Celsius. Although this may seem quite acceptable, this can quickly become inadequate during peak times (ie morning showers).
• Incoming Mains Pressure - Combination boilers require a minimum incoming water pressure/flow rate to operate. More often than not a pump will be required to meet the minimum pressure and flow rates.
• Electric Showers - If you are current shower is electric, it may be worth while considering changing to a mixer shower.

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