Recent Comments and Answered Questions on Green Building Advisor

  • Brad Depies | Apr 21,2018 07:02 PM EDT
    We are yet another heat pump dryer owner and we like it alot. As was mentioned previously, the lint filters fill up quick. At some point in the next few months I will be hooking up an electric ...
  • David Goodyear | Apr 21,2018 06:39 PM EDT
    We just installed a heat pump dryer also. Drying time is slightly longer but it works well.
  • jon kunesh | Apr 21,2018 05:53 PM EDT
    I have had a Panasonic bath fan in my downstairs bathroom for a number of years(and plan to leave in and use if needed) and am now in the process of installing duct for my hrv which I plan on ...
  • | Apr 21,2018 05:22 PM EDT
    I know I can insulate the inside, but I was wondering if the part without siding or anything should be protected on the outside in some way.
  • Calum Wilde | Apr 21,2018 03:53 PM EDT
    http://www.greenbuildingadvisor.com/blogs/dept/guest-blogs/heat-pump-clothes-dryers A other owner of a heat pump dryer here. We like it a lot as well. We moved from an old style top load ...
  • | Apr 21,2018 12:52 PM EDT
    Dana, Yes, I am soaking up everyone's answers! Those slim Fujitsu cassettes and the Attic "Furr-up" that John Semmelhack posted may be just the ticket !! I have a ceiling height change in my ...
  • Martin Holladay | Apr 21,2018 11:06 AM EDT
    Emerson and Jon, There are a lot of unknowns here, but it is really hard to imagine that the triangular attic behind the kneewall will have a moisture problem under these circumstances. Anyone ...
  • Jon R | Apr 21,2018 10:40 AM EDT
    > It requires a longer drying time...it cost a lot more to purchase I'd like to see an analysis of the cost that includes increased wear on the clothes.
  • Jon R | Apr 21,2018 10:36 AM EDT
    Space located part way through the total insulation can suffer from excessive humidity. Warm side vapor barriers and air sealing help, cold side makes it worse - but it can occur anyway. A ...
  • Steve Knapp CZ 3A Georgia | Apr 21,2018 10:11 AM EDT
    We have a heat pump dryer and like it very much. It requires a longer drying time but does not over dry clothes. Static has been a nonissue since we switched. As for negatives, it cost a lot ...
  • Doug McEvers | Apr 21,2018 10:10 AM EDT
    I am working my way through this study and it appears to be very well done. Utility sponsored energy audits generally do not allow enough time or money for the energy rater to do a comprehensive ...
  • T Carlson | Apr 21,2018 08:46 AM EDT
    Dimple mat products have vertical termination bars.
  • Martin Holladay | Apr 21,2018 08:42 AM EDT
    Trevor, One more point: Even when a PV system is out of the picture, it still makes sense to perform a few calculations to determine whether the energy savings associated with insulation upgrades ...
  • Martin Holladay | Apr 21,2018 07:45 AM EDT
    Trevor, You are certainly correct that going off-grid is not cost-effective. No one at GBA has ever advocated "cutting the cord" as a way to save money. For more information on this issue, see
  • Martin Holladay | Apr 21,2018 07:10 AM EDT
    Domenico, This is an old story. Several companies have marketed systems like the one you describe. In all cases, the value of the heat gathered by these systems is too low to justify the high ...
  • Martin Holladay | Apr 21,2018 07:05 AM EDT
    Irene, If your basement includes an above-grade framed wall that is uninsulated, you can insulate the wall from the interior -- just like any above-grade wall. The first step is to take steps ...
  • Martin Holladay | Apr 21,2018 06:59 AM EDT
    Emerson, I'm not sure what risk you're talking about. I don't think there is a risk. For more information, see
  • | Apr 20,2018 11:40 PM EDT
    Net metering is not available where I am. Ballpark price for an off grid system was in the vicinity of $40-50k. That was based on the energy usage at super insulated levels, if reducing to "pretty ...
  • | Apr 20,2018 11:35 PM EDT
    For the second part of my question: how do I treat the vertical end edge condition where the insulation board and simple mat stop?
  • Scott Wilson | Apr 20,2018 11:35 PM EDT
    Building regrets fall into several different categories. The easiest ones to deal with are the finishes. You know that one day when you have more money you can always upgrade the countertops or ...
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