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A failing gas boiler in winter is one of the most stressful household problems you’ll face. The question that immediately follows is “how much is this going to cost?” The honest answer is: it depends on what’s broken, how old your boiler is, and when you need it fixed. This guide walks through typical Dublin market pricing for boiler call-outs, hourly labour rates, and the most common component repairs, so you know what to expect before any engineer arrives. The prices below are typical Dublin market ranges based on industry data and publicly available rates from across the Irish heating trade. They are not Cortech’s fixed prices. Every boiler is different, and Cortech provides a fixed-price quote after our RGI registered engineer has diagnosed your specific fault.
Quick Answer: Typical Gas Boiler Repair Costs In Dublin
| Service | Typical Dublin Range |
| Call-out fee (diagnostic visit) | €80 to €150 |
| Hourly labour rate | €55 to €95 |
| Annual boiler service | €100 to €180 |
| Out-of-hours / emergency call-out | €150 to €300 |
| Annual service and repair plan | €200 to €300 per year |
These are market typical ranges, not Cortech-specific prices. The total cost of any specific repair depends on parts, labour time, and your boiler’s make and model. Request a fixed-price quote for your specific repair on (01) 963 6090.
Call-Out Charges For Boiler Repairs In Dublin
A standard boiler call-out in Dublin typically costs between €80 and €150. This usually covers:
- Travel to your property
- Initial diagnosis of the fault
- A written or verbal quote for the repair
Some companies waive the call-out fee if you proceed with the repair on the same visit. Others charge it as a separate diagnostic fee regardless of whether work proceeds. Always ask before booking.
After-hours and emergency call-outs cost more. Out-of-hours (evenings, weekends, bank holidays) typically command a 30 to 100 percent premium, putting emergency call-outs in the €150 to €300 range. If your fault is not safety-critical and can wait until weekday business hours, booking a standard call-out is significantly cheaper.
Hourly Labour Rates
Standard hourly labour rates for boiler repair work in Dublin sit between €55 and €95 per hour. Rates vary based on:
- Whether the engineer is RGI registered (mandatory for any gas work)
- The complexity of the fault
- Company overheads (sole traders typically charge less than larger firms)
- Time of day (after-hours work commands a premium)
By Irish law, all gas work must be carried out by a Registered Gas Installer of Ireland (RGI). Anyone offering significantly below-market gas repair rates is worth checking on the RGI register before booking. Unregistered work voids your home insurance and boiler warranty.
Common Gas Boiler Repair Costs By Component
The biggest single factor in your total repair cost is which component has failed. Here are typical Dublin market ranges for the most common boiler repairs.
Boiler Fan Replacement: €150 to €400
A failed boiler fan is one of the most common faults. Symptoms include the boiler firing up briefly then locking out, fan-related error codes (E1, F22, EA depending on make), or a noisy boiler. Fan units themselves typically cost €80 to €200 in parts, plus 1 to 2 hours labour.
Boiler PCB / Circuit Board Replacement: €200 to €500
The PCB (Printed Circuit Board) is the boiler’s electronic brain. Failure symptoms include random shutdowns, displays going blank, or the boiler ignoring commands. PCBs are usually the most expensive single repair on a standard domestic boiler, with parts ranging €120 to €350 plus 2 to 3 hours labour.
Heat Exchanger Replacement: €350 to €700
The heat exchanger transfers heat from the burner to your central heating water. Symptoms of heat exchanger failure include white smoke from the flue, water leaks at the base of the boiler, or boilers that struggle to reach temperature. Heat exchangers are expensive parts (€200 to €450) and labour-intensive to replace (3 to 5 hours).
Boiler Gasket Replacement: €60 to €180
Worn gaskets cause water leaks around the boiler casing or flue connection. Gaskets are inexpensive parts (€10 to €40), but replacement requires partial disassembly. Most jobs complete in 1 to 1.5 hours.
Thermocouple Replacement: €70 to €200
Thermocouples are common in older non-condensing boilers and pilot-light systems. A failing thermocouple causes the pilot light to extinguish repeatedly. Modern condensing boilers don’t use thermocouples — they use flame ionisation probes instead, which cost slightly more to replace (€100 to €250).
Pump Replacement: €200 to €450
The circulation pump moves hot water through your radiators. Symptoms of pump failure include cold radiators despite a working boiler, unusual noises, or radiators that take much longer than usual to heat up. Pump replacement typically takes 2 to 3 hours.
Diverter Valve Replacement: €150 to €400
In combi boilers, the diverter valve switches between heating your home and producing hot water for taps. A stuck diverter valve causes one function to work but not the other. Replacement takes 2 to 3 hours.
Pressure Relief Valve: €80 to €200
The pressure relief valve drips when system pressure exceeds safe limits. A constantly dripping valve typically signals over-pressurisation in the system rather than valve failure itself, so engineers will investigate the root cause first.
Expansion Vessel: €120 to €300
The expansion vessel absorbs pressure changes as hot water expands. A failed vessel causes rapid pressure fluctuations and frequent topping-up of the system. Replacement takes 2 to 3 hours.
Flue Replacement or Repair: €200 to €500
Flue issues are safety-critical and must be addressed immediately. Costs vary widely depending on flue length and access difficulty.
If your engineer identifies multiple failed components on an older boiler, replacement is often more cost-effective than repair. See our guide on gas boiler replacement for context on when to make that decision.
Factors That Affect Your Final Repair Cost
Boiler Age and Model
Boilers under 5 years old usually have readily available parts and quick repair times. Boilers older than 10 years may need parts sourced from specialist suppliers, increasing both part costs and labour time. Boilers older than 15 years sometimes hit obsolescence: parts may no longer be manufactured, and a working boiler can be unrepairable for that reason alone.
Brand also matters. Mainstream brands fitted across Dublin (Worcester Bosch, Vaillant, Ideal, Baxi, Glow-worm) have wide parts availability. Less common brands may require longer lead times for parts.
Fault Complexity
A pressure top-up takes 15 minutes. A heat exchanger replacement takes half a day. Labour time alone can swing a repair cost from €60 to €500.
Time of Year
Demand for boiler repairs peaks October through February. Some engineers raise rates during peak winter, and same-day availability becomes scarce. Booking servicing or non-urgent repairs in spring and summer (when demand is lower) keeps costs predictable.
Time of Day
Standard weekday business hours (8am to 6pm) carry standard rates. Evenings, weekends, and bank holidays typically attract a 30 to 100 percent premium.
Parts Availability and Quality
Genuine manufacturer parts cost more than universal aftermarket equivalents but are required to keep most manufacturer warranties valid. Always ask whether your engineer is fitting genuine or aftermarket parts.
Location Within Dublin
Travel time within Dublin doesn’t usually affect cost significantly, but engineers covering the wider Dublin commuter belt may charge a travel premium for jobs at the outer edges of their service area.
Emergency Vs Scheduled Boiler Repairs
| Scenario | Typical Approach | Cost Implication |
| Boiler not firing at all in January | Emergency same-day call-out | Higher rate, premium for urgency |
| Boiler runs but inefficient | Scheduled weekday repair | Standard rate |
| Pressure drops slowly over weeks | Schedule alongside annual service | Most cost-effective |
| Suspected gas smell | Call Gas Networks Ireland first (1800 20 50 50), then engineer | GNI emergency service is free |
For gas smell or carbon monoxide concerns, contact Gas Networks Ireland’s 24-hour emergency line on 1800 20 50 50 before calling a plumber. GNI’s emergency response makes the system safe at no cost. They do not carry out repairs themselves.
How Cortech Quotes Boiler Repairs
We don’t publish fixed prices for boiler repairs because every job is different. Instead, here’s how the quoting process works:
- You call us on (01) 963 6090 or submit our online form
- We respond within 2 to 4 hours to arrange a diagnostic visit
- Our RGI registered engineer attends, diagnoses the fault, and gives you a fixed-price quote in writing before any work begins
- If you proceed, the agreed price is what you pay. No hidden charges, no upward revisions.
All Cortech engineers are RGI registered. Every repair includes a written certificate of work, which insurers and landlord compliance schemes require. View Cortech’s gas boiler service and gas leak detection pages for related services.
How To Reduce Your Boiler Repair Costs
Service Annually
A properly serviced boiler catches small faults before they become expensive repairs. A pressure issue caught during annual servicing might cost €30 to fix. The same problem left until the boiler fails completely in January can cost ten times that. Annual servicing also keeps your manufacturer warranty valid, which means parts replacement during the warranty period is significantly cheaper.
Avoid Out-of-Hours Where Possible
Unless the issue is safety-critical or you have no heat or hot water in winter, schedule repairs during standard weekday business hours. Out-of-hours premiums can add 30 to 100 percent to the bill.
Check Manufacturer Warranty First
Boilers under 5 years old often retain a manufacturer warranty (sometimes longer with registration). If your fault is covered, parts and labour may be free. Always check before paying for repairs.
Get a Written Quote Before Work Starts
Verbal estimates are not binding. A written fixed-price quote protects you against scope creep, surprise charges, and disputed bills. Reputable engineers offer this as standard.
Consider Replacement for Older Boilers
If your boiler is 15+ years old and quotes are over €500 for repair, replacement may be more cost-effective long-term. Modern condensing boilers run 30 percent more efficiently, paying back the upgrade through lower gas bills over time.