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Lamp vs Laser Projector Break-Even Calculator

Reviewed for 2026, updated September 8, 2026.

Compares the total cost of a lamp based projector, including replacement lamps, against a laser projector over your ownership period and shows how many years it takes for the laser premium to pay for itself.

Your numbers

Results update as you type.

Your estimate

Lamp projector total cost over the period...
Laser projector total cost over the period...
Spent on replacement lamps...
Years until the laser premium is repaid...

Estimates only. Assumptions are listed below, and you can change every input.

Laser projectors cost more up front, and their appeal is simple: no lamps to replace, stable brightness and a light source rated for tens of thousands of hours. The question is whether the premium is justified for the way you actually watch. A family that runs the cinema every evening burns through lamps quickly; a couple that watches two films a week may never replace a lamp before upgrading the whole projector.

This calculator multiplies your weekly viewing hours by the number of years you plan to keep the projector, works out how many replacement lamps the lamp model would need over that period, and adds their cost to its purchase price. It then compares that figure with the laser projector price and reports the break-even point in years. Electricity and maintenance are deliberately left out so the comparison stays transparent.

How to use this tool

  1. Enter the purchase price of the lamp projector and the laser projector you are weighing against each other.
  2. Copy the rated lamp life and the replacement lamp price from the spec sheet and retailer listing for the lamp model.
  3. Estimate your weekly viewing hours and how many years you will keep the projector, then compare the two totals and the break-even year.

What the math assumes

  • Viewing time is weekly hours multiplied by 52 weeks and by the number of ownership years, with no seasonal variation.
  • A replacement lamp is bought each time the running hours pass a full rated lamp life; a lamp still in use at the end of the period is not charged.
  • The laser light source is assumed to outlast the ownership period, so the laser projector carries no light source replacement cost.
  • Electricity, dust filters, servicing, resale value and gradual brightness loss are not included for either projector.
  • The break-even figure divides the laser price premium by the average annual lamp spend; if the laser costs no more than the lamp model, break-even is reported as 0 years.

Frequently asked questions

Why is the break-even year shorter than the number of lamps I would actually buy suggests?

The break-even figure spreads lamp spending evenly across each year, while the total cost only charges a lamp when a full rated life has been used up. Both views are useful: one shows the trend, the other shows the cash you would actually spend.

Should I use the lamp life for eco mode or full brightness?

Use the mode you will watch in. Full brightness modes often halve the rated life compared with eco mode, and in a dark dedicated cinema many owners are comfortable in eco mode.

Does the laser projector really never need a light source replacement?

Laser light sources are rated for far longer than lamps, and for a typical ownership period they usually do not need replacing. If your total hours approach the rated life on the laser spec sheet, treat that as a sign that the comparison needs a longer view.

Does this site earn anything if I buy a projector?

Some links on this site are affiliate links and may earn a commission at no extra cost to you. The calculator itself is independent and uses only the figures you enter.

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