How Much Does a New Boiler Cost in Ireland 2026?
Whether your boiler has broken down or you're planning ahead, understanding boiler replacement costs in Ireland helps you budget properly and avoid overpaying. Here's what you need to know in 2026.
Average Boiler Replacement Costs in Ireland
A new boiler in Ireland typically costs between €2,500 and €5,500 including installation. However, prices vary significantly depending on the boiler type, brand, and complexity of the installation.
Quick Reference: 2026 Boiler Prices
- Gas combi boiler (supply + install): €2,500 – €4,000
- Gas system boiler: €3,000 – €4,500
- Oil boiler: €3,500 – €5,500
- Heat pump (air source): €8,000 – €14,000
- Boiler service: €80 – €150
Boiler Types & Prices
Combi Boilers
Combi (combination) boilers are the most popular choice in Ireland. They heat water on demand and don't require a separate hot water cylinder, making them ideal for smaller homes.
| Boiler Size | Best For | Total Cost (Installed) |
|---|---|---|
| 24-28kW | 1-2 bed apartment | €2,500 – €3,200 |
| 28-32kW | 3 bed semi-detached | €2,800 – €3,600 |
| 35-40kW | 4+ bed detached | €3,200 – €4,200 |
System Boilers
System boilers work with a hot water cylinder and are better for homes with multiple bathrooms. They deliver hot water to several taps simultaneously without losing pressure.
| Boiler Size | Total Cost (Installed) |
|---|---|
| 12-18kW | €3,000 – €3,800 |
| 18-25kW | €3,400 – €4,200 |
| 25-35kW | €3,800 – €4,800 |
Oil Boilers
Still common in rural Ireland where gas isn't available. Oil boilers are more expensive upfront and running costs depend heavily on oil prices.
| Type | Total Cost (Installed) |
|---|---|
| Standard oil boiler | €3,500 – €4,500 |
| Condensing oil boiler | €4,000 – €5,500 |
Heat Pumps (The Future)
With Ireland's push towards greener heating, heat pumps are becoming increasingly popular. While expensive upfront, they're significantly cheaper to run and qualify for substantial SEAI grants.
| Type | Cost (Before Grants) | SEAI Grant |
|---|---|---|
| Air-to-water heat pump | €8,000 – €14,000 | Up to €6,500 |
| Ground source heat pump | €14,000 – €25,000 | Up to €6,500 |
What's Included in Installation?
A standard boiler installation should include:
- Removal and disposal of old boiler
- Supply of new boiler
- Installation and connection to existing pipework
- Flue installation
- System flush (recommended)
- Testing and commissioning
- Registering with Gas Networks Ireland (for gas boilers)
- Building regulations compliance certificate
Additional Costs to Consider
| Item | Typical Cost |
|---|---|
| Moving boiler location | €300 – €800 |
| New flue (longer route) | €150 – €400 |
| Magnetic filter installation | €150 – €250 |
| Power flush (system clean) | €400 – €600 |
| New hot water cylinder | €600 – €1,200 |
| Thermostatic radiator valves | €20 – €40 each |
| Smart thermostat (e.g., Hive, Nest) | €200 – €350 |
SEAI Grants for Boilers
The Sustainable Energy Authority of Ireland (SEAI) offers grants to help homeowners upgrade their heating systems:
- Heat pump systems: Up to €6,500
- Heating controls upgrade: €700
- Solar thermal panels: €1,200
Note: SEAI no longer offers grants for gas or oil boilers. The focus has shifted entirely to renewable heating systems. However, if you're replacing an inefficient boiler, the savings on your energy bills can be significant.
When Should You Replace Your Boiler?
Consider replacement if:
- Age: Your boiler is over 15 years old
- Frequent breakdowns: Repair costs are mounting up
- Inefficiency: Your heating bills are rising despite similar usage
- Strange noises: Banging, whistling, or gurgling
- Yellow flame: Should be blue (potential carbon monoxide risk)
- Parts unavailable: Manufacturer no longer makes spares
RGI Registration Is Essential
For any gas boiler installation, your installer must be registered with the Register of Gas Installers (RGI). This is a legal requirement in Ireland. An unregistered installer could void your insurance and create serious safety risks.
Always verify registration at rgii.ie before hiring.
How to Get the Best Price
- Get 3+ quotes: Prices vary significantly between installers
- Compare like-for-like: Ensure quotes include the same boiler and work
- Check reviews: Cheapest isn't always best value
- Ask about warranties: Good installers offer extended labour warranties
- Consider timing: Summer installations can be cheaper (less demand)
- Don't forget the service plan: Annual servicing keeps your boiler efficient
Popular Boiler Brands in Ireland
- Worcester Bosch: Premium quality, excellent warranties, €2,000-3,500
- Vaillant: German engineering, reliable, €1,800-3,200
- Viessmann: High efficiency, compact designs, €2,000-3,500
- Grant: Irish company, great for oil boilers, €1,500-3,000
- Ideal: Good value mid-range, €1,200-2,200
- Baxi: Budget-friendly option, €1,000-1,800
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