The short answer
Commercial-grade LEDs use roughly 90% less power than incandescents, which means far more strands per circuit — often 40+ runs versus 4 or 5. They contain no filament to break, survive freeze-thaw cycling far better, and last many seasons. Incandescents produce warmer color, which is their only genuine advantage.
The Question Behind the Question
Most homeowners asking about LED versus incandescent are really asking two other things: why professional lighting costs more than a box-store strand, and why the lights they bought last year already have dark sections.
Both answers come down to the same distinction — and it is not primarily LED versus incandescent. It is consumer grade versus commercial grade, which is a bigger gap than the bulb technology itself.
The Straight Comparison
| Commercial LED | Incandescent | |
|---|---|---|
| Power draw | ~90% less | Baseline |
| Strands per circuit | Often 40+ runs | Typically 4–5 |
| Lifespan | Many seasons | 1–3 seasons |
| Cold weather behavior | Unaffected; LEDs prefer cold | Filaments become brittle |
| Heat output | Negligible | Hot — a genuine fire consideration |
| Failure mode | Individual bulb dims | One failure can drop a section |
| Color quality | Excellent, improving constantly | Warmest available — its real advantage |
| Color changing | Available with RGB systems | Not possible |
| Upfront cost | Higher | Lower |
Why Circuit Capacity Is the Real Story
This is the point that changes what is actually possible on a house, and it is rarely explained.
A standard exterior circuit supplies a finite amount of power. Incandescent strands draw heavily, so you reach that limit after four or five runs. On a two-story home with a complex roofline, that means either running extension cords across the property to reach other circuits, or accepting a much smaller display than the house could carry.
LEDs draw so little that you can commonly run forty or more strands on a single circuit. That is the difference between outlining one gable and outlining an entire roofline, the garage, the pathway and the landscaping — from the same outlet.
It is also a safety matter. Overloading circuits with incandescent runs, or daisy-chaining extension cords to get around it, is a genuine hazard in a season already associated with electrical fires.
What Michigan Winters Do to Each
Our climate is unusually hard on holiday lighting: temperature swings from mild to well below freezing, repeated freeze-thaw cycling, ice loading, wind, and road salt in the air near main roads.
Incandescent bulbs rely on a thin filament. Cold makes it brittle. Physical stress from ice loading and wind then breaks it, which is why displays develop dark sections in January rather than December. Older wiring in series means one failure can take out an entire run.
LEDs have no filament. They are solid-state, generate almost no heat, and actually operate more efficiently in cold conditions. The failure points on a quality LED display are the connections and the wire jacket, not the diodes — which is why commercial-grade construction matters.
The distinction that actually matters: commercial-grade LED lighting uses heavier gauge wire, sealed weather-resistant connectors and coaxial bases that resist water ingress. A cheap LED strand with unsealed sockets fails in a Michigan winter for the same reason a cheap incandescent does — water gets in, freezes, expands.
Where Incandescents Still Win
Being fair about this: incandescent light has a warmth and a specific spectral quality that early LEDs could not match. Some people strongly prefer that traditional glow, particularly on historic homes where a cooler white looks wrong.
Modern warm-white LEDs have closed most of the gap, and a good installer can show you samples lit side by side. But if you have a specific attachment to the incandescent look, that is a legitimate preference rather than a mistake. It simply comes with shorter life, fewer strands per circuit, and more mid-season failures.
Consumer Strands vs. What Professionals Install
Even setting the bulb technology aside, professional-grade product differs in ways that decide whether a display survives a Michigan winter:
- Heavier gauge wire that tolerates ice loading and wind without stressing the connections
- Sealed, weather-resistant connectors rather than open sockets that admit water
- Custom-cut runs made to your roofline's actual length, instead of chaining fixed-length strands with loops of slack at every corner
- Proper clips for each substrate — shingle, gutter, fascia and brick each need a different attachment, and none of them should involve staples or nails
- Serviceability — a professional system can be repaired mid-season rather than replaced
That last point is worth dwelling on. Store-bought strands are effectively disposable; when a section fails in mid-December, there is no repair path. Part of what a professional holiday lighting service provides is that if something fails, someone comes out and fixes it while the display is still up.
RGB and Color-Changing Systems
Worth knowing this exists, because it is only possible with LED. RGB systems let a single installed run produce different colors on demand — red and green in December, orange for Halloween, red white and blue in July, team colors during a playoff run. One installation, many looks, controlled from a phone.
You can preview exactly this on your own house before committing. Our LightCast™ visualiser lets you upload a photo, automatically detects your roofline, and shows color changes in real time on your actual home.
The Bottom Line
For a Michigan winter, commercial-grade LED is the correct answer on power, longevity, safety and display scale. The upfront cost is higher and the lifetime cost is considerably lower. The one genuine reason to choose incandescent is a preference for that specific warm glow — which is a real preference, just an expensive one.
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