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  1. #1
    Join Date
    Jun 2005
    Posts
    118
    I use a oil fired boiler for baseboard heat and hot water. I have a weil mclain that is about 83-84% efficient when tested annually. If I were to replace it, would I be able to find a 90+% eff. oil fired model? I know that natural gas furnaces and boilers are offered in high eff, but I haven't yet seen an oil fired boiler that is high eff. Thanks in advance.

  2. #2
    Join Date
    Jun 2005
    Posts
    118
    ttt

  3. #3
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    33,415
    You won't get the super AFUE of gas but they are going up. Weil-McLain's Ultra is in the 86% AFUE range. Burnham's MPO around 87%, Viessmann up to 87%. Anybody know of a condensing oil boiler yet?

  4. #4
    Join Date
    Jun 2006
    Location
    New Jersey
    Posts
    4,291
    There are a few 90%+ oil fired boilers out there. Im too afraid to install one yet. Memories of the first 90%+ oil fired hot air furnaces.

    Heres a link to one, I have heard good things about
    http://www.monitorproducts.com/fcx.htm

  5. #5
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    66,817
    Originally posted by ascj
    There are a few 90%+ oil fired boilers out there. Im too afraid to install one yet. Memories of the first 90%+ oil fired hot air furnaces.

    Heres a link to one, I have heard good things about
    http://www.monitorproducts.com/fcx.htm
    I have the same fears.
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  6. #6
    Join Date
    Jun 2006
    Location
    Ithaca, NY
    Posts
    39

    Thumbs up

    peerless just released a 93% oil fired boiler. I think it comes in 2 sizes 100,000 and possibly 80,000 btu's. it is very new, just saw it in trade magazine this week---went to parts supplier of peerless and found them very expensive....But yes they are out there.

  7. #7
    Join Date
    Jul 2005
    Posts
    75

    Thumbs down hi eff oil

    dont do it i unless you service it like clock work.but they do work fine.

  8. #8
    Join Date
    Feb 2003
    Posts
    1,996
    There's only Peerless and Monitor selling a condensing oil fired boiler in the US right now. Both only come in one or two sizes, are very expensive and would run best on low sulphur oil which few have access to yet. Plus the 90+ rating are based ona low temp radiant application.
    A good 3 pass cast iron boiler with 87% efficency would be your best bet.

  9. #9
    Join Date
    Jun 2005
    Posts
    118

    Thanks for the info

    Does weil Mclain still make good units? Our is A weil mclain circa 1988. It is is good shape and passes all the tests that our tech does on it every year. I don't have any experience with other brands so any info would be great.

    Also, we have since replaced all our single pane windows with double pane vinyl replacements windows, along with new siding. I also reinsulated the attic. I am assuming I will need a new load calculation done when they come to price it out, correct?

  10. #10
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    66,817
    That would be a good idea, to make sure you don't get an over sized boiler.

    You should also ask your contractors about outdoor reset.
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  11. #11
    Join Date
    Feb 2003
    Posts
    1,996
    WM has the ultra oil. Heavy as all hell. Look at Burnham's MPO. Made in America and eazy to clean.

  12. #12
    Join Date
    Jun 2005
    Posts
    118
    Originally posted by beenthere
    That would be a good idea, to make sure you don't get an over sized boiler.

    You should also ask your contractors about outdoor reset.
    What is an outdoor reset exactly?

  13. #13
    Join Date
    Jun 2005
    Posts
    118
    Originally posted by johnsp
    WM has the ultra oil. Heavy as all hell. Look at Burnham's MPO. Made in America and eazy to clean.
    So thats who makes those boilers. I see them in the wall of pride pictures. I like how the blower motor has the metal box around it. I'll have to check those out. Nice looking units!

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