Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.2 9/3/84; site aluxe.UUCP
Path: utzoo!watmath!clyde!burl!ulysses!mhuxj!aluxp!aluxe!2141smh
From: 2141smh@aluxe.UUCP (henning)
Newsgroups: net.consumers
Subject: Re: Replacement Insulating Windows
Message-ID: <516@aluxe.UUCP>
Date: Thu, 15-Nov-84 14:08:40 EST
Article-I.D.: aluxe.516
Posted: Thu Nov 15 14:08:40 1984
Date-Received: Fri, 16-Nov-84 05:34:37 EST
References: <5754@brl-tgr.ARPA>
Distribution: net
Organization: AT&T Bell Laboratories, Allentown, PA
Lines: 16

****                                                                 ****
From the keys of Steve Henning, AT&T Bell Labs, Reading, PA aluxe!2141smh

> wood double-hung windows and 22 year old storm windows in my house
> replaced with the new Thermopane insulating type windows.  I have been
> quoted a cost (installed) of about $300 a window here on the East Coast.
At $300 per window, if you invested that in tax-free bonds, you 
would get $21 per window per year and still have your principal.  
Unless you need new windows, I can't see how Conductive-Metal
Thermo-something windows can save any money over wood storm windows,
let alone $21 per window per year.  I have 200 year old windows with
25 year old storm windows and would have to save 19 windows times
$21 per window per year or about $400 per year to save.
Attic insulation, furnace dampers, zone room control and warm
clothing are much more cost effective than new storm windows
for old ones.