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Considring installing "sun tunnel" for light to dim area. Whats downside & how much light can I expect?

concerned about . heat loss, . condensation, . excessive heat, . leaks in roof, the 14" diameter tube will be about 9 feet long from pitched roof to level ceiling, with a diffuser, in upstate New York. Any experiences out there to share would be appreciated. I saw it installed on a DIY show a few months ago and was very impressed.

Public Comments

  1. Open the drapes on a small north-facing window -- that's about how much light you'll get from a sun tube the length you're looking at. With an internal hallway or bath that can be quite a stunning difference. Heat gain/loss and condensation will depend on the quality of the unit, just as it does with any window. Leaking should not be an issue -- structurally, this is no different from an exhaust vent. Call a good roofer for the external portion of the installation.
  2. Hi, I Installed the exact unit you are talking about in a bath room in a garage apt in Texas. I had concerns with heat gain and all but wanted natural light in the shower. The tunnel generated lumen equal to about a 75 watt bulb. No Heat gain or ac loss and beautiful light for the fern my wife placed underneath it on a chain. It is an easy install and well worth the work.