What's the Cause of Spotty Radiant Heat?

Submitted By
Deco10
Answers
1 expert, 0 community
Q:

Hi!  I am a new member and cant tear myself away from your website and show.  I purchased my first home last year in upstate New York.  It is a small 1922 farmhouse that was mostly move-in ready.  After spending a year here, I have learned what improvements should be made.  Going into winter, I have a big concern about my radiators.  

I have hot-water radiators throughout the house, zone-controlled, with a thermostat on both floors.  I noticed that the second floor radiators don't provide sufficient heat when compared to the first floor.  I chalked this up to their distance from the boiler, but after closer inspection, i discovered the culprit: Though the pipes are new copper and seemingly updated, I learned that there is actually no "Send" for the second floor rads.  There is a zone valve for the return, but the second floor supplies are all tapped out of the first-floor send.  I didn't catch this before purchasing the home, but the more I learn, this seems like trouble.  

Is this as large an energy-waste as I think it is?  It seems like the radiator is pushing and pulling in ways that it isn't plumbed for.  Would running a supply line be best, or should I leave it alone?  I feel that with the proper plumbing, I will get much more heat and efficiency from the boiler.  

Thank you so much for your input, and I look forward to hearing your replies.

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