Search Results - HVAC-Talk: Heating, Air & Refrigeration Discussion

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  1. That sounds about right.

    It does indeed go about 3-5 per hour. I'll have to watch it more carefully. Still looking into a new unit "just in case".
  2. Heat pump/AC unit: What are "normal" run times & another oversized/undersized ?

    Hi all-

    Got some great idea here & thought I'd ask a question or 2. A little background, first: 10 yr old 3K sf house +/- with oil furnace & 5 ton heat pump. Furnace is oversized Williamson 1...
  3. Perhaps I spoke too soon...... Seems the problem is back.

    Oh, well. I was again in the basement. Heard the heat pump turn on. No problem. It runs & shuts off. I hear it again a little while later. After a few minutes I hear the oil furnace kick back on. ...
  4. Update: the tech's best guess was a DPDT relay.

    A pleasant & well versed man in his late 20s showed up and appreciated my color diagrams of the wiring made when the dual fuel control board was installed. Was about 85+% sure I had an intemittently...
  5. An interesting theory-- I've only seen the defrost cycle once in 10 years.

    The furnace is cleaned & checked yearly, although I generally do the nozzle & quick clean on the oil water heater myself as it is simple enough. I compressor, a Lennox, is checked every few years....
  6. Let's see what happens in the morning: Scheduled an appointment.

    I'll let people know what happened. Of course, it wasn't happening when I turned it on......
  7. I appreciate the advice & suspect you guessed the issue. Wish you guys aren't local!

    You gentlemen most certainly did not fall short. You gave honest & thoughtful advice to a stranger asking for help. That is much appreciated. Such is rare and the type of contractor I gladly hire.
    ...
  8. I might do just that!

    I've actually had comments on the BMW before and more. I've heard "they can afford it" when they aren't aware I can hear them. I'll pay what is fair, not what someone thinks they can get away with.
  9. Thanks. Not in the least trying to be difficult or seek a freebie (more)

    I was hoping to gain a little understanding on what to look for, as I'm one of those who likes to understand things & hire a good tech when needed. Few homeowners would even notice that both were on,...
  10. I would prefer a pro, but have had difficulty finding good people.

    I am FAR from cheap (just look in my garage :) and will pay for quality. But, I have run into "parts changers" & those who take a look in said garage & then jack up the price.

    I did have a...
  11. The last time I did that I put someone's kid through college!

    Very tough to get a "pro" in who is 1) actually a pro, 2) knows what they are doing, 3) will show up at something approaching on time and 4) At a reasonable price, which I will gladly pay for quality...
  12. What component went wrong: BOTH heat pump & Oil furnace came on.

    Noticed something odd today. Heard the heat come on as it still in the 50s here in the People's Republic of NY. Normally I wouldn't have thought much of this, but was surprised when I realized I...
  13. Yes, I have seen run times of 10 minutes or so on occasion

    I never really knew what the definition of short cycling is!
  14. I am a 3rd kind of customer.

    I am in neither category and am not simplistic like #1 nor overly fussy like #2. Instead, I want the best overall VALUE, even if it costs more. A 10% greater cost yielding a 25% greater value is OK...
  15. Indeed I do have oil. I have debated ad nauseum oil vs. propane.

    I do in fact have an oil furnace. Still thinking about propane, but have all but ruled it out after research showed oil to less expensive than propane for all but the last 2 or 3 of the preceding 30+...
  16. Now there is some wisdom!

    Hit the nail on the head. Repeatedly.
  17. Very interesting, beenthere. I am not alone, I see! Who makes such a furnace?

    I sensed I was not alone. There has to be others who need airflow, but not 50 kazillion btus as well.

    Might I ask what companies make hot air furnaces in the 100K btu range which an accommodate a...
  18. Unfortunately, these only TWO of the 10-12 people I called would do an Man. J!!

    Nobody wants to do it. ALL wanted to do "ballparks", except one. He did a full computer analysis, which is where I got the figure from. It factors in duct loses, etc and appears to my untrained eyes...
  19. Is it possible to avoid an oversized furnace despite a need for more airflow?

    Here is my dilemma: Per the heat calcs done I need about 56K btu of cooling and a max of 75 or so of heating. To be safe, some suggested a slightly larger furnace.

    My current hot air furnace puts...
  20. I called Williamson, who made my furnace, and was told "no nozzles changes". (more)

    I reason per the tech guy I talked to is that a lower than the std 1 gal per hour nozzle will cause the combustion chamber to run too cool and form condensation that will eventually kill it. He was...
  21. Very interesting and, to a layman, counterintuitive.

    One would think that operating at a lower stage would be more efficient in addition to possible comfort benefits.

    I must look into the multi stage oil furnaces. Got any favorites or...
  22. How about this to throw a wrench into the discussion: Propane furnaces are stageable.

    How about this as a possibility:

    From what I can see many propane furnaces have 3 stages to better accommodate different requirements. The Carrier i was looking at would work at 45,75 and 100K btu...
  23. Good catch! I do indeed have a hot air furnace. I see this a hotly debated issue (m)

    I do in fact have a hot air furnace, which is definitely oversized. Both heat calcs I had done showed about 75K as the max needed. My furnace has a nonchangeable nozzle putting out 1 gph, or about...
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    I was talking about the top line model w/ a scroll.

    Yes, I saw from the literature that the lesser models use piston compressors. Such seems far more complicated and prone to failure in my admittedly inexperienced eyes. I'll wager that we'd see...
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    My own "seat of the pants" research reveals startling similarities (more)

    From what I can see based on Hallowell's own published figures the COP for both high (47) and low (17) are only marginally higher than the Carrier. The HSPF is also the same, although the SEER rating...
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