How much do new windows save on utility cost?

[Laura Williams]

For those of you who have fully replaced old windows & installed new ones in your personal or rental properties I’m curious what percentage it reduced your utility bills.

I have an apartment unit that has 15 large old windows and has been getting high electric bills (electric furnace and no dishwasher or washer/dryer and temp set at 70) and I’m wondering if it’s worthwhile to replace the old windows. Curious the reduction in people’s bills after full window replacement on their older properties. 

[Curtis Bidwell]

@Laura Williams This isn’t a yes or no answer.  There are other considerations as well.  I replaced 60 windows on a 1940’s Apartment.  I wasn’t paying their power bill HOWEVER, the old windows got massive condensation on the inside which rotted out the window sills and walls below the windows - which I do pay for!  Also I get better tenants now because the building looks and functions better.  

Also I was able to refinance after my remodel (which include other items as well) and took cash out for my next deal.  

I also have a duplex with older windows (1970’s).  When I did a rent increase that was the #1 response, “Are we getting new windows for the increased rent?” I will eventually replace those just to upgrade the building.  Again, better quality, better tenant, better rent.