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  1. Installing thermostats that you can force to a...

    Installing thermostats that you can force to a predetermined number of CPH may help a little. Looks like you are cycling 5-6 times per hour which is hard on the equipment. Vision Pro, for example,...
  2. My guess is the thermostat isn't making THAT much...

    My guess is the thermostat isn't making THAT much difference in your gas usage.
    I'd look elsewhere.
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    Nope.

    Nope.
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    The timer only ticks when the unit is running.

    The timer only ticks when the unit is running.
  5. So at -15F outdoor ambient it takes your furnace...

    So at -15F outdoor ambient it takes your furnace 20 minutes to increase the indoor temp by 1F degree? What are you complaining about then? I agree with Mark, sounds like operation of a normal sized...
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    Why not just switch the thermostat to Em Heat ? ...

    Why not just switch the thermostat to Em Heat ? That will keep the HP from running; only the supplemental heat will run.
  7. 8-10F degrees setback at work and overnight for...

    8-10F degrees setback at work and overnight for max savings...

    like t527ed said, try both and see what you like.
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    You would need to know the size of the heater...

    You would need to know the size of the heater kit. Should be notched out somewhere on the HP placard.
    5kw, 8kw, 10, 15, 20, 25, etc.
    It could also depend on the blower speed but we could assume...
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    Next time go outside and see if the coil is...

    Next time go outside and see if the coil is indeed frosted.
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    Sounds like a test question.

    Sounds like a test question.
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    Install dummy thermostat set at 76F Hide "real"...

    Install dummy thermostat set at 76F
    Hide "real" thermostat and set to 70F
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    With gas heat, set back as far as you can stand...

    With gas heat, set back as far as you can stand it for maximum savings.
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    ... or not enough airflow, causing the strips to...

    ... or not enough airflow, causing the strips to bounce off their internal limits.
    Listen for clicking at the air handler.
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    I see, he's using 47F for the COP. So after it...

    I see, he's using 47F for the COP. So after it gets below freezing and the coils get frosted he will probably get 2/3rds the output, putting the cost in very cold weather pretty close to gas.
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    Probably not adequate. What kind of temperature...

    Probably not adequate.
    What kind of temperature stratification are you measuring?

    1) Let heat or a/c run for a while.
    2) Test temp upstairs and temp downstairs.
    3) Report the difference.
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    It sounds like a safety control is locking out...

    It sounds like a safety control is locking out the system. More than likely high limit but could be others. You definately need to call a pro on this; it's locking out for a reason.
    It's like your...
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    Doesn't the COP drop off dramatically after the...

    Doesn't the COP drop off dramatically after the unit gets iced up? Is it really a straight line? I agree with Bald one, if you set it at 40F you will never have to worry about it getting iced up. ...
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    I can't recommend closing any registers... you...

    I can't recommend closing any registers... you need to close down the airflow much closer to the plenum. In other words, look for DAMPERS close to the plenum. The reason is if you close a register,...
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    I don't think heating objects with mass, or cold...

    I don't think heating objects with mass, or cold air in cabinets or closets has anything to do with run time. A 70F house will eventually equalize all the objects in the room to be at 70F,...
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    The type of heating will certainly affect this....

    The type of heating will certainly affect this.
    A house with baseboard or in-floor radiant, set at 71F, will feel much warmer than a house with gas/oil forced air set at same temperature, which will...
  21. "using a dial type hygrometer, I am between 60...

    "using a dial type hygrometer, I am between 60 and 65 all the time. Digital type says high 40's to low 50's.
    Big difference for some reason. ?????!!!!"

    I wouldn't trust the dial type hygrometer....
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    Do you or your wife feel cold easily? That is...

    Do you or your wife feel cold easily?
    That is the question to ask.
    All the science and mathematics in the world do not change the fact that 90-100F is all you get out of heat pump vents. And it...
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    We turn off the gas at night and use a little...

    We turn off the gas at night and use a little radiator type space heater in our bedroom. It definately saves us money. You would have to do the math to be sure but at 8cents/kwh it is pretty cheap...
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    You need to find someone to fix the ductwork. ...

    You need to find someone to fix the ductwork. Find a pro.
  25. I agree with pstu; for now NG is cheap but wait...

    I agree with pstu; for now NG is cheap but wait 5-10 years. But really, WHO KNOWS?
    In these days, energy is bought, traded, and sold daily and therefore the commodity or retail prices can change...
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    Both are quality products.

    Both are quality products.
  27. At least in Central Maryland, Nat Gas is very...

    At least in Central Maryland, Nat Gas is very cheap again.
    Supposedly the supply of Nat Gas bought at ridiculously high prices because of Katrina, is now exhausted. The supplies purchased for the...
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    Basically, if this is true: "my wife currently...

    Basically, if this is true:

    "my wife currently says it's always cold in the house and we keep it set at 70 degrees."

    Then you won't be running the HP much!
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    If you have a heat pump then do some research by...

    If you have a heat pump then do some research by searching.

    If you have fossil fuel then you want to use as much setback as you can bear. This will give you the most savings.
  30. Could be many different things 1) system is...

    Could be many different things

    1) system is too big
    2) moving too much air
    3) condensate drain not correct
    4) short cycling
    5) incorrect charge
    6) xxx

    Even if comfort-R is off it shouldn't...
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    Where in MD? Electric rates are set to increase...

    Where in MD?
    Electric rates are set to increase 40-80% by July. I am hearing 60%. I'd be concerned of a heat pump only option.
    Option D will help you year after year to get the most economical...
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    I remember a thread about this a while back. Did...

    I remember a thread about this a while back. Did you try searching?
    I remember that no one was too enthusiastic about it.
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    Go with whatever has a scroll. That old...

    Go with whatever has a scroll.
    That old Climatuff design, while reliable and efficient, has been outpaced by the scroll esp in a heat pump application. There is a big difference in the output in...
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    Was there frost on the cabinet? That will make...

    Was there frost on the cabinet? That will make the fan sound much louder. Remember to keep those heat pumps clear of ice and snow!
  35. Low vs high fire operate at roughly the same...

    Low vs high fire operate at roughly the same efficiency. I believe any efficiency in burner output is offset by the increase in blower current.
    It may be the blower speed on high is too fast. ...
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    You can't contribute 15 degrees to the...

    You can't contribute 15 degrees to the refrigerant type, no way. Don't believe it.
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    One option is to see if your utility has any...

    One option is to see if your utility has any affiliates that provide home products and services.

    <<flame suit on>>
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    He's bs'ing you. Talk to his manager.

    He's bs'ing you. Talk to his manager.
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    I can speak for Central MD, not VA. Electric...

    I can speak for Central MD, not VA.
    Electric rates are going to SPIKE big time in June 2006. This is due to artifically low rates due to lock in in 1999 of electric commodity.
    We're talking 60-75%...
  40. OK, I'll start... JANUARY 2006, source for hdd =...

    OK, I'll start... JANUARY 2006, source for hdd = http://www.cpc.ncep.noaa.gov/products/analysis_monitoring/cdus/degree_days/mctyhddy.txt


    1) Residence age: 3 years old, 2200 sq ft conditioned,...
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    "Since this is my first heat pump, is it better...

    "Since this is my first heat pump, is it better to have the furnace locked out, unless it falls below a certain temperature?"

    I think the answer to this question depends on how much of a setback...
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    Here in Baltimore we show on the bill if the...

    Here in Baltimore we show on the bill if the reading was actual or estimated.
  43. Call to have it checked, I bet they are there...

    Call to have it checked, I bet they are there same day.
    Leaks up to and including the meter are the responsibility of the utility; leaks after the meter are your responsibility.
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    Jeesh that's a lot of electricity! Either your...

    Jeesh that's a lot of electricity! Either your house must be 10,000 square feet or you live in Alaska.
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    "I looked at the breaker and the AUX heat power...

    "I looked at the breaker and the AUX heat power was tripped. I put it back on and the system brought the temp back up. Isn't that an issue?"

    Yes, you need to have this looked at. It is possible a...
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    Don't forget the cost of the depreciation of the...

    Don't forget the cost of the depreciation of the house. It certainly will be worth less (to the next person) without a gas furnace.
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    So the Trane option is duel fuel? (heat pump and...

    So the Trane option is duel fuel? (heat pump and furnace)
    That's the way to go.

    In general:
    Straight HP = cheap to operate, less comfort
    Straight Gas furnace = expensive to operate, more...
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    Seems like a harmless enough question. First you...

    Seems like a harmless enough question.
    First you need to determine if your system is FORCED HOT AIR (blows warm air thru vents) or HYDRONIC (baseboards, radiators, or infloor heat).
    Second you need...
  49. So if higher cycles per hour means staying closer...

    So if higher cycles per hour means staying closer to setpoint, the control my stat has (temp swing) essentially does the same thing, yes?

    Nope. Your stat is essentially "Variable Cycles Per...
  50. Radiant for sure.

    Radiant for sure.
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