Why retrofit gear trays beat full fixture replacement
When ripping out the fitting is the wrong move
It's tempting to assume that the cleanest way to upgrade a building's lighting is to throw the old fittings in a skip and bolt new luminaires to the ceiling. In practice, it's almost never the cheapest, least disruptive, or least risky path — and it's often the worst option for the building itself.
Whole-fixture replacement creates four problems most specifications underestimate:
- Cost — fittings, labour, scaffolding, isolation work, and waste disposal stack up quickly, especially in occupied premises.
- Disruption — full removal forces evening or weekend work, room shutdowns, and temporary lighting on top of the install cost.
- Structural risk — older ceilings often contain asbestos. Once you start cutting and lifting fittings, you trigger an HSE-regulated removal regime that wasn't in the original budget.
- Aesthetic loss — heritage and architecturally significant buildings (museums, historic civic estates, listed care homes) lose character when standardised modern luminaires replace bespoke fittings.
The retrofit gear tray approach
A gear tray is the sub-assembly inside a luminaire that holds the light source, driver, and any control gear. Replace just the tray — keep the housing, lens, and mounting — and you upgrade the fitting from fluorescent or HID to LED without touching the building fabric.
Morgan Hope manufactures retrofit gear trays as a custom service rather than a stock product, because every retrofit programme is different. We use our LedLite PCB range as the core LED engine and configure tray geometry, optics, driver, and control wiring to match the existing housing.
The practical effect on a project is usually:
- 30–60% capital cost saving versus full replacement of equivalent quality fittings
- Two-hour-per-room install windows rather than full days
- Zero asbestos exposure where ACM ceilings exist
- 100% match to the original fitting aesthetics — useful in retail, museum, and leisure environments
When it's not the right answer
Retrofitting isn't a panacea. Skip it when:
- The original housing is failing (cracked diffusers, corroded reflectors, broken mountings) — the housing itself needs replacing
- Fixtures lack adequate thermal mass for LED — undersized housings cause premature LED failure even with good drivers
- The site needs current emergency lighting compliance and the original fittings predate BS 5266-1:2016 detection requirements
- You're moving from a fundamentally wrong layout (e.g. asymmetric task lighting in a workshop) — gear-tray substitution preserves the layout problem
For those cases, a proper redesign is the right answer.
Choosing the right partner
If you're scoping a retrofit programme, ask any potential supplier:
- Will you survey the existing fittings? A serious gear-tray manufacturer needs hands-on dimensions, not a brochure spec. Photographs are not sufficient.
- What driver are you specifying, and is it documented for warranty support? Generic drivers are the leading cause of post-handover failures — quality matters.
- What's the IES file? A reputable supplier produces a calculation file for the as-installed performance, not the bare LED engine.
- Who tests the assembled product? EMC and LVD compliance applies to the assembled retrofit unit, not just the LED component.
- How will you handle stocking? If a tray fails in year four, can the supplier still produce a matching replacement? Custom programmes need a documented bill of materials and access to the original PCB tooling.
Where this leaves you
Full fixture replacement should be a deliberate choice — for new layouts, broken housings, or radical efficiency upgrades. For most refurbishment programmes, retrofit gear trays produce better outcomes for less money. If you're working through a portfolio refurbishment, talk to us about a survey before you commit to a fitting-replacement budget.
