What a consumer unit upgrade costs
A fuse board upgrade in Limerick typically runs €350 to €600 including certification. It is usually a single day's work with power restored the same evening.
| Factor | Effect |
|---|---|
| Number of circuits | More circuits means more protective devices and more testing |
| Position of the existing board | Inside a fitted press or high in a hall adds time |
| Earthing and bonding | Frequently needs bringing up to standard in older houses |
| Circuits that fail testing | Must be resolved before the new board can be certified |
| Surge protection | Standard on a good upgrade; confirm it is included |
The honest caveat: a board swap can only be certified if what it feeds is sound. An electrician who finds a failing circuit once the board is off has to tell you. That is the job working correctly, not an upsell, but it is the reason a quote should say what happens if testing turns something up.
Signs your board needs replacing
Rewireable fuses rather than breakers
If your board has ceramic fuse carriers with wire in them rather than switches, it is decades past its design life and offers no RCD protection at all. This is a replace-now situation rather than a watch-and-wait one.
One RCD protecting everything
Common in nineties and early two-thousands boards. It works, but a fault anywhere takes out the entire house, including the freezer and the alarm. Modern boards use an RCBO per circuit so a fault in the garden lighting does not black out the kitchen.
Breakers that trip repeatedly
Usually a fault somewhere rather than the board itself, but a board with no spare capacity and overloaded circuits is often the underlying reason. Worth diagnosing properly rather than resetting it every week.
No spare ways left
If every position is used, you cannot add an EV charger, an electric shower or a garden supply without upgrading first. This is how most people in Limerick end up doing the board: they wanted something else.
Signs of heat
Scorching, discolouration around a breaker, or a smell of hot plastic near the board. Stop reading and ring an electrician today.
What the upgrade actually gives you
RCBO protection on every circuit
Each circuit gets its own device combining overload and earth-fault protection. The practical benefit is containment: a fault takes out one circuit instead of the house.
Surge protection
A surge protective device absorbs voltage spikes from the supply or from nearby lightning. Worth having anywhere, and particularly worth having in a house full of electronics, heat pump controls or solar inverters.
Capacity for what comes next
Spare ways for an EV charger, a garden room, an attic conversion or a shower. If any of those are on your five-year list, the board upgrade is the enabling job.
A certificate
Replacing a consumer unit is controlled work, so it comes with a Completion Certificate from a registered contractor. That is the document your insurer and your eventual buyer will want to see.
What the day looks like
Power off for most of the working day, so plan around the freezer and anything medical that needs mains. The existing circuits are identified and tested, the old board comes out, the new one goes in, each circuit is reconnected and tested individually, and the installation is certified.
Testing before the board goes back on is the part people do not see and the part that matters. It is also why a contractor who quotes without a look at the existing board is guessing.
Why this job is so common in Limerick
A large share of Limerick's housing was built between the mid-seventies and the late eighties, across the city suburbs and the county towns. Those boards were specified for a household with an immersion, a cooker and a handful of sockets.
The same houses now run an electric shower, a dishwasher, a tumble dryer, a home office and increasingly a car. The wiring is often fine. The board is the bottleneck, and it is the cheapest part of the system to bring up to date. Newcastle West in particular has whole estates from this era coming due at once.
Get a price for your board
Send a photo of the existing board with the cover on, your eircode, and roughly how many circuits it has. That is enough for a firm price without a call-out.
See also: electrician in Limerick, EV charger installation and full cost guide.