Replies

1. GBA Editor
   Martin Holladay|Jul 16, 2012 11:09am|#1

   Robert,
   It's impossible to assess this house with the information you provided.

   We don't know your climate or your location.

   We don't know your local electric rates, so it's hard to know whether $200 a month is a lot or a little.

   We don't know what type of glazing the house has -- whether it is low SHGC or high SHGC.

   We don't know how much interior thermal mass the house has.

   即使我们知道这一切 - 仍然很难回答这个问题。

   There are more important issues, including:

   - How leaky is the house?

   - How much insulation does it have?

   You can always retrofit some small roofs to shade the lower windows if the house overheats. (These small roofs would be between the first floor windows and the second floor windows.)

2. GBA Editor
   Martin Holladay|Jul 16, 2012 01:22pm|#2

   AJ,
   You're right, of course. Although Robert didn't include his location in his original question, the Web page that Robert linked to indicates that the house is in Connecticut.

3. 
   Aj Builder, Upstate NY Zone 6a|Jul 16, 2012 03:51pm|#3

   Martin, did you click the real estate listing? Location is exact, pictures, typical home of its vintage. We could guess the windows, CT=expensive electric rates, etc.

   鲍勃，这是一个买家市场。我会让一家太阳能公司评估添加面板。然后，尝试从您想支付的费用中减去面板的费用购买该地点。然后添加面板。祝你好运。

   And yes what Martin suggest could be done in the future, but as to payback there is none. Best payback is to buy nothing and upgrade nothing. But what fun is that.

   南方暴露太多。据说南部在其他地方还不错，因为太阳很高，而且许多变暖的光线在发病率上从玻璃上反射出来。您家的西部和一些东部的阳光更直截了当，需要遮阳夏天（该房屋可以通过树木和减少的窗户SQFTGE）。在冬季，太阳不太可能是西方和东部的价值，因此在冬季，良好的南方曝光有助于。

   Buy it and install PV, throw a party and let us know the date.