LED lighting upgrades in Treharris
Swap fluorescent, halogen and metal halide fittings for efficient LED. An LED upgrade in Treharris is also the cheapest moment to add presence or daylight sensors, because the electrician is already working on every fitting.

Local LED lighting upgrades in Treharris
In Treharris warehouses and workshops the biggest savings come from swapping metal halide high bays for LED, where a 400 W lamp plus gear can often be replaced by a fitting drawing 150 W or less.
Old tubes are hazardous waste. Our teams working in Treharris bag and recycle them through an authorised route and give you the paperwork.
We cover the whole of Treharris, including the CF46, CF45 and CF82 postcode districts, and nearby places such as Gelligaer, Penrhiwceiber and Bargoed.
Treharris at a glance
What's included
- Testing and a BS 7671 certificate for the work, with a schedule of what was fitted
- Optional presence and daylight sensors to cut running hours further
- Complete LED luminaires rather than tube swaps, so old control gear is removed
- A walk-round survey counting fittings, wattages, running hours and ceiling types
Guide prices in Treharris
Typical budgets for Treharris premises, supplied and installed, excluding VAT.
| Item | Guide budget (ex VAT) | Basis |
|---|---|---|
| LED panel (600×600) | £50 – £145 | per fitting, supplied and fitted |
| LED batten (complete luminaire) | £80 – £195 | per fitting, supplied and fitted |
| LED high bay | £145 – £390 | per fitting, supplied and fitted |
| Presence (PIR) sensor | £40 – £80 | per sensor, installed |
Example: 40 LED panels replacing fluorescent fittings in a 400 m² office, about £1,950 – £5,800 excluding VAT. Fixed price after a free survey.
Rules that apply in Treharris
The Welsh Approved Document L Volume 2 (2022) uses 95 luminaire lumens per circuit-watt for general lighting, with alternatives such as LENI. A new Welsh edition takes effect from 4 March 2027 with a higher figure of more than 105.
In Great Britain, common T8 fluorescent tubes were caught by ecodesign rules from 1 September 2023 and the mercury exemptions for ordinary T5 and T8 lamps ended on 1 February 2024.
Treharris FAQs
Can you work out of hours in Treharris?
Yes. Evening, weekend and phased working is common for Treharris offices, shops and warehouses, so the business keeps running.
Do you cover all of Treharris?
Yes. We work across Treharris and the CF46, CF45 and CF82 postcode districts, plus nearby places such as Gelligaer, Penrhiwceiber and Bargoed.
Do you remove the old fittings in Treharris?
Yes. Old fittings are removed, and fluorescent tubes are recycled as hazardous waste through an authorised route, with paperwork for your records.
How long does an office LED upgrade take?
A typical 400 m² office with around 40 fittings is often a one- or two-day job. Larger sites are phased zone by zone, and we can work evenings or weekends.
LED lighting upgrades near Treharris
- LED lighting upgrades in Gelligaer
- LED lighting upgrades in Penrhiwceiber
- LED lighting upgrades in Bargoed
- LED lighting upgrades in Pontypridd
- LED lighting upgrades in Rhondda
- LED lighting upgrades in Merthyr Tydfil