radiator is overkill for small lavs; are there "fins" for hot water pipes?

Discussion in 'HVAC Heating & Cooling' started by rexdean, Nov 15, 2007.

  1. rexdean

    rexdean New Member

    Joined:
    Nov 15, 2007
    Occupation:
    seeking balance
    Location:
    waltham, ma
    There are two small lavatories in my 100 year old Boston-area house. Each has a small radiator (3 fin), but not small enough: the rooms are excessively warm during the winter. I'm wondering whether the two radiator pipes (send/return) in each lav would be sufficient on their own for winter heat (I'd remove the radiators altogether), and also whether there's some sort of "fins" I could attach to the pipes that would radiate a bit more of the heat away (as on computer microprocessors) as the hot water passes through to upper floors. I'd also like to recover the floor space taken up by the radiators. I could just try out the bypass and see what happens, but before I do I was hoping someone out there might have had some experience with this approach.
     
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    There are a bunch of low profile radiators available and another thing to consider is to retrofit it with a thermostatic valve. You could make it do double duty by buying one of the hydronic towel warmers. This may provide enough heat for the room, but I haven't checked their output. I have a towel warmer, but it is only 165W (it's electric). Those hooked to the boiler have the potential for a lot more output.
     
  3. Sponsor

    Sponsor Paid Advertisement

     
  4. frenchie

    frenchie Jack of all trades

    Joined:
    Dec 30, 2006
    Occupation:
    Caretaker
    Location:
    Brooklyn, NY and Fire Island, NY
    Lots of bathrooms around here, are heated with just the riser - this is on steam systems, though. From your mention of returns, it sounds like you're on hot water?

    As far as fins... that's what the inside of modern baseboard radiators look like. You could buy a slantfin tube section (without the housing), and replace a section of pipe with it... but the fins would get covered in dust pretty quicklym, and the edges on the fins can be pretty sharp. I don't think it would be very practical, or safe.


    Jadnashua's suggestion is your best bet: look into european-style low-profile radiators and towel warmers. There's a lot of options...

    http://www.google.com/search?q=hydr...=navclient-ff&ie=UTF-8&rlz=1B3GGGL_en___US215
     
  5. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    A thermostatic valve is a fairly inexpensive potential fix.
     

    Attached Files:

  6. rexdean

    rexdean New Member

    Joined:
    Nov 15, 2007
    Occupation:
    seeking balance
    Location:
    waltham, ma
    thanks

    Yes, it's forced hot water and not steam. I was under the impression that closing down the hot water going into the radiator (whether by hand or by thermostatic valve) somehow affected the radiators down the line...but as the pipes continue and the radiators come off of "T" connections, that may not be true. I imagine (if the shutoff were complete) that whatever water remains in the radiator would be, at its hottest, the lukewarm water returning from radiators further down the line...which would be fine. Somehow I don't think the existing valve shuts off the water completely, though...are they meant to?

    As for a towel rack, I will definitely look into this for the full bath (these are both toilet and sink lavatories). Thanks for your suggestions.
     
Similar Threads: radiator overkill
Forum Title Date
HVAC Heating & Cooling Cast Iron Baseboard Radiator Prep Yesterday at 5:49 AM
HVAC Heating & Cooling Radiator Heating Issues: Pex/with oxy barrier Jul 24, 2015
HVAC Heating & Cooling baseboard water-filled radiator Jan 15, 2014
HVAC Heating & Cooling Baseboard radiator recommendation Sep 19, 2013
HVAC Heating & Cooling PTAC v. Through the Wall AC + Radiator? Jun 4, 2013

Share This Page