LED vs Halogen Landscape Lighting: Is Upgrading Worth It in Oakland County?

Published July 22, 2026 by LandscapeLightMI

If your landscape lighting was installed more than a few years ago, it is probably halogen, and every fall you probably notice a fixture or two has gone dark. That is halogen being halogen. The question we get most from Bloomfield Hills and Birmingham homeowners is whether it is worth switching to LED, and if so, whether they can just change the bulbs or need a whole new system. Here is the honest comparison, including the one catch that trips up most do-it-yourself upgrades.

Energy: The Gap Is Not Small

This is where LED wins outright. LED landscape bulbs produce the same usable light as halogen while drawing a fraction of the power. The rule of thumb installers use is to divide the halogen wattage by about five or six. A 5-watt LED puts out roughly what a 35-watt halogen does, and a 7-watt LED matches a 50-watt halogen.

Scale that across a whole yard and it adds up fast. A typical halogen system running fifteen 20-watt fixtures pulls around 300 watts every night. The LED equivalent at the same brightness runs closer to 50 or 60 watts. That is a cut of roughly 80 percent on the lighting portion of your bill, every hour the system runs, all year. On estate properties with 30 or 40 fixtures burning five hours a night, the difference on the electric bill is real money.

Lifespan: The Ladder Tax

Halogen bulbs are consumables. A 12V MR16 halogen lasts somewhere between 2,000 and 6,000 hours, which at five hours a night works out to two or three seasons before it burns out. On a big system that means climbing around the beds every year replacing dead bulbs, or paying someone to.

Quality LED landscape fixtures last 25,000 to 50,000 hours, roughly 15 to 25 years at the same usage. In practice that means you install them and largely forget them. For Michigan properties especially, where nobody wants to be out swapping bulbs in December, cutting bulb replacement to almost nothing is a bigger quality-of-life win than the energy savings. The efficiency numbers line up with the U.S. Department of Energy's guidance on landscape lighting, which points homeowners toward LED for exactly these reasons.

Light Quality: Halogen's One Old Advantage, Now Matched

For years the argument for halogen was the light itself. Halogen throws a warm, full-spectrum glow around 2,700 Kelvin that flatters brick, stone, and foliage, and early LEDs looked cold and blue by comparison. That gap is closed. Today's landscape LED comes in warm 2,700K options with high color rendering that matches the halogen look most homeowners want, without the heat or the energy cost.

Getting that warmth right still matters, because a mismatched color temperature can make a beautiful home look clinical. We walk through choosing the right warmth in our guide to landscape lighting color temperature. Specify a quality warm LED and the light-quality argument for halogen effectively disappears.

Heat and Safety

Halogen bulbs run hot, hot enough to scorch mulch, discolor fixture lenses, and burn a hand during maintenance. In dry late-summer beds that heat is a genuine consideration. LEDs run cool to the touch. For fixtures tucked into plantings, pressed against siding, or within reach of kids and pets, the cooler operation is a quiet but real safety upgrade.

Can You Just Change the Bulbs? The Transformer Catch

Here is the part the online tutorials skip. Most low-voltage halogen fixtures use a 12V MR16 bulb with a GU5.3 pin base, and MR16 LED bulbs drop straight into the same socket. So in theory you swap bulbs and you are done. Often that works. Sometimes it does not, and the reason is the transformer.

Many older magnetic transformers were built to run halogen and need a minimum load to operate steadily, sometimes 20 or 30 watts. Replace a string of 35-watt halogens with 5-watt LEDs and the total load can fall below that threshold. The result is flicker, buzzing, or LEDs that simply will not light. The fix is an LED-compatible transformer, or sizing the transformer correctly to the new, much lower LED load, which we cover in detail in our post on transformer sizing. This is exactly why a planned whole-system conversion usually beats a piecemeal bulb swap: the transformer, the bulbs, and the connections all get matched at once.

How the Two Compare

What It Costs and When It Pays Back

LED fixtures and bulbs cost more up front than halogen. That is the whole case for halogen, and it is a shrinking one. Between the energy savings every night and the near-elimination of annual bulb replacement and the service calls that come with it, an LED upgrade typically pays for itself within a few years, and everything after that is savings. On a property you plan to keep, the math favors LED clearly. For a fuller breakdown of system pricing, see our 2026 landscape lighting cost guide, and if you are weighing a full redesign rather than a straight swap, our custom design plans are where that starts.

What This Means for Your Property

If you are still running halogen in Bloomfield Hills, Birmingham, Rochester Hills, or Troy, upgrading to LED is one of the easier decisions in outdoor lighting. You cut the energy bill, you stop climbing around the beds replacing bulbs, you run cooler and safer, and with quality warm LED you keep the exact look halogen gave you. The one thing worth doing right is the transformer, so the smart move is to plan the conversion as a system rather than swapping bulbs one at a time and hoping.

Frequently Asked Questions

Is LED landscape lighting better than halogen?

For almost every Oakland County property, yes. LED landscape lighting uses roughly a fifth of the energy of halogen for the same brightness, lasts 25,000 to 50,000 hours instead of 2,000 to 6,000, and runs cool. Halogen still renders warm color beautifully out of the box, but modern LED matches that warmth. The efficiency and lifespan gap is decisive.

Can I put LED bulbs in my existing halogen landscape fixtures?

Usually yes. Most low-voltage halogen fixtures use a 12V MR16 bulb with a GU5.3 base, and MR16 LED bulbs drop into the same socket. You have to match the base, voltage, beam angle, color temperature, and light output. The fixture housing rarely needs replacing. The catch is not the fixture, it is the transformer feeding it.

Will LED bulbs work with my old halogen transformer?

Often, but not always. Many magnetic transformers built for halogen need a minimum load, sometimes 20 to 30 watts, to run steadily. Swap 35-watt halogens for 5-watt LEDs and the load can drop below that threshold, causing flicker or bulbs that will not light. An LED-rated or correctly sized transformer fixes it, which is why a whole-system swap often beats bulb-by-bulb.

How much do LED landscape lights save on energy?

A lot. A 5-watt LED produces about the same light as a 35-watt halogen, and a 7-watt LED matches a 50-watt halogen, so LEDs draw roughly 15 to 20 percent of the wattage. A 300-watt halogen system becomes a 50-to-60-watt LED system at similar brightness, cutting the lighting portion of your bill by the same proportion every night it runs.

How long do LED landscape lights last versus halogen?

Quality LED landscape lights last 25,000 to 50,000 hours, which is roughly 15 to 25 years at five hours a night. Halogen MR16 bulbs last 2,000 to 6,000 hours, about two to three seasons before they burn out. That difference is why halogen systems mean a ladder and a box of bulbs every year, and LED systems mostly do not.

Is it worth upgrading halogen landscape lighting to LED?

For most Oakland County homeowners, yes. Between the energy savings, the near-elimination of annual bulb replacement, and cooler, safer operation, an LED upgrade usually pays back within a few years and improves reliability through Michigan winters. The one thing to get right is transformer compatibility, so the upgrade is worth doing properly rather than one bulb at a time.