Renting vs buying Christmas lights

The commercial-grade C9 most professional installers use, sold in retail quantities. Thick polycarbonate lenses and a green commercial-gauge wire that survives being handled every year.

C9 is the big, faceted, traditional-looking bulb — the one that reads as Christmas lights from the street rather than as a glow. Wintergreen's OptiCore line is the version professional installers buy, and the reason is not brightness. It is that the lens is polycarbonate rather than glass, and the manufacturer rates the bulbs at 60,000 hours. A season is roughly 45 days at eight hours, so about 360 hours. The arithmetic on that rating is generous enough that bulb failure stops being the thing that ends a strand's life; handling damage is.

The practical case for buying commercial-grade C9 is replaceability. Each bulb screws into an E17 socket. When one dies, you replace one bulb for a couple of dollars instead of pulling a 100-light strand off the roof. Over five seasons that is the whole argument, and it is why the same boxes keep appearing on the same houses.

The honest counterpoint: this is expensive per foot, and it is sold in 25 ft sets. A 180 ft roofline is eight boxes plus spare bulbs, which is a real number. If you are lighting one gable over the front door and you are not sure you will do it again next year, a cheaper set is the right call and we would not argue.

One buying note that trips people up — C9 sets and C9 bulbs are sold separately as often as together. Check whether the listing you are on is a complete lit set or a box of replacement bulbs, because the photos look nearly identical.

The reason to own socket-based C9 in the first place. A box of 25 E17 bulbs turns a dead spot on the roof into a five-minute fix instead of a re-install.

Buy a box of these at the same time you buy the lights. That is the whole recommendation.

The E17 base is a genuine standard, so a Wintergreen bulb will screw into another brand's C9 socket. That matters in year four, when the set you originally bought has been discontinued and you have one dark bulb over the garage.

Match the finish, though. Faceted bulbs have a cut-glass texture that catches light; smooth or ceramic bulbs are opaque. Put one faceted bulb in a run of twenty-four smooth ones and it is the only thing anyone sees.

If your lights are molded mini strings rather than socketed C9, none of this applies and there is nothing to replace. That difference is the strongest practical argument for socketed C9 over cheap strings, and it only shows up after a couple of seasons.

600D fabric with a PVC lining, reinforced handles and three reels inside. Reels plus a bag is the combination that works; either alone does not.

The hour you spend in January decides the hour you spend in November. Lights thrown into a cardboard box come out as one object eleven months later, and untangling it is the worst job in the whole project.

The fix is reels inside a bag. Reels keep each run wound and separate; the bag keeps the reels together, keeps dust and rodents off, and survives being stacked on. HOLDN' STORAGE sells the combination: three reels inside a 600D bag with a PVC lining and reinforced handles.

Capacity is about 375 feet of string or cord, which is one average house. If you run a full roofline plus bushes plus a path, buy two and split them logically — roofline in one, ground-level in the other — so next November you carry up only what you need first.

One habit worth building: label each reel with where its run goes as you wind it. 'Front gutter, 4 sets' written on a piece of tape in January is worth twenty minutes next season.