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  1. Thread: Hybrid Oil

    by vsabio
    Replies
    54
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    4,009

    I could see that, since I live in an area with...

    I could see that, since I live in an area with mild winters, the difference in savings between an 82% oil furnace and a 92% oil furnace isn't very dramatic, considering that I'm putting in a hybrid...
  2. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    I'm now getting quotes for the two-stage system....

    I'm now getting quotes for the two-stage system. (This is now "round three" of the quotes. If these guys don't either give up on me or put a hit on me, it'll be a miracle.) Note that I have an oil...
  3. Thread: Hybrid Oil

    by vsabio
    Replies
    54
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    4,009

    Pretty slick! I'll look into it. Thanks for the...

    Pretty slick! I'll look into it. Thanks for the pointer.



    It looked like he calculated duct sizes (in and out). We didn't discuss temp rise -- and though I should have mentioned short-cycling,...
  4. Thread: Hybrid Oil

    by vsabio
    Replies
    54
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    4,009

    The first guy to look at the job did some quick...

    The first guy to look at the job did some quick (back-of-the-envelope style) calculations and concluded that I'm okay without that return. However, a different prospective contractor is sending his...
  5. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    Oh yeah -- that and more. (You guys got the...

    Oh yeah -- that and more. (You guys got the expurgated version, believe it or not.)



    Yes, it's covering up the problem -- although the only way to PROPERLY solve the problem involves a lot of...
  6. Thread: Hybrid Oil

    by vsabio
    Replies
    54
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    4,009

    A very valid concern. So here's some background...

    A very valid concern. So here's some background information, and (ultimately) how we got to the two-zone thing:

    The "main" trunk (supply) from the furnace is a pretty good size; the one that...
  7. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    The plan is (was?) to keep the single-stage...

    The plan is (was?) to keep the single-stage furnace.

    What led me to zoning is that the register airflow on one side of the house -- the side with the bedrooms(!) -- is rather weak. The design of...
  8. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    Makes perfect sense. Next question: I'm...

    Makes perfect sense.

    Next question: I'm planning to split my single-zone setup into a two-zone configuration. Given that my current ductwork setup has two trunks, which serve the two different...
  9. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    The Infinity 2-stage is the 25HN, correct? ...

    The Infinity 2-stage is the 25HN, correct?



    No, the current furnace is a single stage Armstrong unit.



    So if I try to translate this, you are suggesting that the Performance 15 HP with...
  10. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    Next step in this adventure: I now have quotes...

    Next step in this adventure: I now have quotes from three prospective contractors, with two more on the way.

    Two of them have quoted Carrier systems. Both quoted Carrier coil CNPVP4821ATA, but...
  11. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    Thanks. It sounded a little fishy to me,...

    Thanks. It sounded a little fishy to me, especially when I couldn't find even a mention about it via Google search.

    I agree that this one isn't sounding so good; I'll probably cancel the appt I...
  12. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    The latest development in this thread: Another...

    The latest development in this thread: Another prospective contractor (telephone conversation while setting up appt) commented that Trane's Puron systems have a very high failure rate -- about 40%....
  13. Thread: Hybrid Oil

    by vsabio
    Replies
    54
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    4,009

    That site has power consumption embedded in their...

    That site has power consumption embedded in their calculations; you just don't happen to see it. :-) But they're using a cost-of-energy calculation -- and, for electric, the utility company charges...
  14. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    On a second read of that comment, it might not...

    Nice job of translating from what I wrote (which, IIRC, was "4TXCW44xx," because that's what it looks like on the written estimate) to the correct identifier -- which, upon closer inspection, really...
  15. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    Nice job of translating from what I wrote (which,...

    Nice job of translating from what I wrote (which, IIRC, was "4TXCW44xx," because that's what it looks like on the written estimate) to the correct identifier -- which, upon closer inspection, really...
  16. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    Could be done, although the tank is underground,...

    Could be done, although the tank is underground, so connecting a supply line -- which isn't entirely trivial even for above-ground tanks -- would be a significant effort. Also, the diesels are...
  17. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    No, but the professional who looked at my system...

    No, but the professional who looked at my system didn't seem to think it was a problem. There's limited headroom above the furnace (23 inches), but sufficient room to fit either a Trane 44kBTU or a...
  18. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    Yes, as I dig through the archives on "crossover"...

    Yes, as I dig through the archives on "crossover" discussions, I'm starting to see that. (Holy camole, there are lots of knowledgeable people on this site. There's a LOT of information in them thar...
  19. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    Yes, it is based on a couple of Google searches...

    Yes, it is based on a couple of Google searches that I concluded that there's no apparent benefit to converting to propane. The savings -- if there are any at all -- would be marginal, yet the...
  20. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    I met with one of the prospective contractors...

    I met with one of the prospective contractors today (the other was a no-show); he appeared to be very well informed, and seemed to genuinely have quite a lot experience. He measured my oil furnace,...
  21. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    Thanks again. This has helped a lot -- my...

    Thanks again. This has helped a lot -- my impression of how this would work was obviously way off. I'll let you know what the prospective contractors have to say ... should be interesting.

    - V
  22. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    Thank you (both) for the information; this has...

    Thank you (both) for the information; this has been very helpful already.

    Let's suppose that I go with BeenThere's "comfort" approach, which requires an outdoor temperature sensor. (I figure if I...
  23. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    Whoops -- after another reading, I think I...

    Whoops -- after another reading, I think I initially misunderstood your reply. When you say, "any heat pump with fossil fuel auxiliary heat," are you saying that the fossil-fuel system is triggered...
  24. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    Sorry, I didn't mean to give the impression that...

    Sorry, I didn't mean to give the impression that I was looking for brand-specific information (at this point); I was really trying to find out if oil-based hybrid systems exist at all, or if I will...
  25. Thread: Hybrid Oil

    by vsabio
    Replies
    54
    Views
    4,009

    Hybrid Oil

    Newbie poster here....

    I live in N. Virginia (mild-ish winters, daytime highs typically in the 40s, 3-sigma is probably 25 to 55 degrees) and have a forced-air oil furnace that came with the...
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