If your home still has halogen downlights or old incandescent bulbs, switching to LED lighting is one of the quickest ways to make it look fresher, feel more comfortable and cost less to run. It’s also a chance to fix some hidden safety and insulation problems that are common in older Kiwi homes. Here’s what you need to know, from the team at Brady Electrical.
Lower power bills, straight away
LEDs produce the same light for a fraction of the power. EECA (Gen Less) says LED bulbs use up to 85% less electricity than incandescent or halogen bulbs. Its own example swaps a 60 W incandescent bulb for a 12 W LED of the same brightness, which is 80% less power.
The savings add up fastest on the lights you use most: kitchen, living areas, hallways and outdoor lights. EECA estimates a single LED can save $100 to $300 over its life, so a home with a ceiling full of 50 W halogen downlights has a lot to gain.
Lights that last for years, not months
EECA puts a typical LED’s life at around 30,000 hours, compared with about 2,000 hours for an incandescent bulb. At three hours a day, that’s more than 25 years. No more ladders every few months, and far fewer dead bulbs going to landfill.
Less heat, more comfort
Old halogen lamps turn most of their energy into heat rather than light. That’s why they’re too hot to touch and why rooms full of them can feel stuffy in summer. LEDs run much cooler, which is better for comfort, for nearby fittings and furnishings, and for safety in your ceiling space.
Design options that change the feel of a room
This is where LEDs really modernise a home:
- Slim downlights. Modern LED downlights sit almost flush with the ceiling for a clean, contemporary look.
- Colour temperature. Choose warm white (around 2700–3000K) for cosy living and bedrooms, or neutral to cool white (around 4000K) for kitchens, laundries and workspaces. Some fittings let you switch between them.
- Dimming. Set the mood for dinner or a movie night, and use less power while you’re at it.
- Strip lighting. LED strips under kitchen cabinets, in shelving, along stairs or behind a TV add a high-end finish.
- Feature and outdoor lighting. Pendants over an island bench, wall washers, garden and deck lighting, and security lights all suit LED.
Smart lighting and controls
LED lighting pairs well with smart home automation. Smart switches, dimmers and sensors let you control lights from your phone or by voice, set schedules, create scenes (“dinner”, “movie”, “goodnight”) and make the house look lived-in while you’re away. Motion sensors in hallways, garages and outdoor areas mean lights are only on when needed. We can design a system that suits how your family actually uses each room.
The safety side: what NZ homeowners should know
Old halogen downlights and ceiling insulation
Older halogen downlights, and the transformers that run them, get very hot. MBIE’s Building Performance guidance notes that fire is a risk, and that safety rules require a 100 mm gap between older downlights and ceiling insulation. Those gaps and open holes also let warm air escape into the roof space, so your insulation works less well and your home is harder to heat.
Why IC-F rated downlights matter
In New Zealand, the recommended replacement is an IC-F (Insulation Contact – Fire resistant) rated LED downlight. IC-F fittings are sealed against insulation getting inside, and insulation rated for continuous exposure to 90°C can safely sit against and over them. That means your insulation can be laid back over the top, closing the gaps and keeping more heat in the house. Unmarked recessed fittings must not be installed in homes.
Transformers, drivers and dimmers
Simply swapping a halogen lamp for an LED “retrofit” bulb isn’t always the best answer. Old transformers may not suit LED loads, which can cause flickering, buzzing or early failure. Dimmers need to be LED-compatible too, or you can get flicker, humming or lights that won’t dim smoothly. Replacing the whole fitting with a matched LED downlight and driver is usually the more reliable, safer fix.
Use a licensed electrician
Replacing light fittings, drivers, switches and dimmers is electrical work that should be done by a licensed electrician. For this kind of work, you should receive a Certificate of Compliance (CoC) confirming it meets New Zealand’s electrical safety requirements, including AS/NZS 3000. Keep it with your house records, as it can matter for insurance and when you sell.
What an LED upgrade with Brady Electrical involves
- A walk-through. We look at your existing lights, transformers, switches and ceiling space, and talk about how you use each room.
- A lighting plan and quote. We recommend fittings, colour temperatures, dimming and any smart controls, with a clear price.
- Tidy installation. Old halogen fittings and transformers out, IC-F rated LED downlights and compatible dimmers in, with insulation clearances checked.
- Testing and paperwork. Everything is tested, and you get your Certificate of Compliance.
- Peace of mind. Our work is backed by a 12-month workmanship guarantee.
An LED upgrade also fits nicely alongside a kitchen or bathroom renovation, a switchboard upgrade or a move to smart home automation.
Frequently asked questions
Can I just put LED bulbs into my old halogen downlights? Sometimes, but older transformers and dimmers often aren’t compatible, and the fittings may still need insulation gaps. Replacing them with IC-F rated LED downlights is usually the better long-term fix.
Is it worth replacing lights that still work? For lights you use every day, generally yes, because the energy savings add up. For a cupboard light used a few minutes a week, wait until it fails.
Will LED light look harsh or cold? Not if you choose the right colour temperature. Warm white LEDs give the same cosy glow as old bulbs.
How long does an upgrade take? It depends on the number of lights and ceiling access. Many homes can be done in a day. We’ll give you a timeframe with your quote.
Ready to bring your home into the LED era?
Whether you want to swap out a ceiling full of halogens, add feature lighting or go fully smart, Brady Electrical can help across the North Shore and wider Auckland. Call 0210 265 4778, email info@bradyelectrical.co.nz, or get in touch through our contact page to book a visit.
Sources: EECA / Gen Less lighting guidance (as reported by Selectra NZ); MBIE Building Performance, “Downlights and recessed lights”; WorkSafe Energy Safety bulletin on recessed downlights (AS/NZS 60598.2.2 and AS/NZS 3000); BRANZ Level, “Choosing a lamp”.