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  1. Replies
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    It's been a few days since I've been on this...

    It's been a few days since I've been on this thread, but I was able to lower the cph setting down to 3 for the furnace and so far this increased the run time by at least 2 minutes. This also helped...
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    I enjoy learning more about HVAC! :) The sales...

    I enjoy learning more about HVAC! :)

    The sales consultant evaluated all the insulation and he said that there was enough of it. Apparently I don't think he was really checking it that well. I also...
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    As I mentioned about the air not being that cold...

    As I mentioned about the air not being that cold in COOL mode in one of my earlier posts on this thread, I did forget to mention that there's air that's leaking out in the middle of the coil. Could...
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    I really do like the registers we currently have.

    I really do like the registers we currently have.
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    I think that according to code around here...

    I think that according to code around here registers in rooms with windows must be located by the window. One of the registers in our basement system (one in theater room) is one of those 3 cone...
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    I would like to wonder why they are rectangle. I...

    I would like to wonder why they are rectangle. I think one of the reasons why is because the registers are installed right by the windows and also since the fact that when these homes are built, the...
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    Okay thanks! Duct work in our attic actually IS...

    Okay thanks! Duct work in our attic actually IS easy to get to. Could installing dampers right on the start of the ducts from the plenum be a good idea?

    Now the other 2 experts said that the...
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    Thanks. This is the upstairs system. The noise is...

    Thanks. This is the upstairs system. The noise is not very loud, but there is some noise from all the registers upstairs. So you are saying that 14" x6" is too small? During thanksgiving this year we...
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    It will be nice to have zoning, but we can't...

    It will be nice to have zoning, but we can't afford it, unfortunately. The air registers are made of steel. I prefer aluminum registers of this style, but will aluminum ones actually make the air...
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    The new registers have made the air a little...

    The new registers have made the air a little quieter and there's been much improvement from them. They look nicer as well! :)
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    Thanks. There's actually an 8 inch duct going to...

    Thanks. There's actually an 8 inch duct going to the register, not 6 inch. We do have recessed lights (only in the hallway) and they are well sealed. One of the techs recommended installing an attic...
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    Thanks for all your advice! I did ask the tech...

    Thanks for all your advice! I did ask the tech one time about zoning and the price was too expensive. Here's a look at one of the air registers in our upstairs:332751 All the supply registers in the...
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    The system has 5 returns (one 8 inch in each...

    The system has 5 returns (one 8 inch in each bedroom, one 10 inch in one end of hallway, and one 8 inch in other end of hallway). I don't think that the returns are causing the problem. Well I really...
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    I also have a question about the cfm in heating...

    I also have a question about the cfm in heating mode. For the btu's the furnace runs on 52,000 btu output on high stage and 35,000 btu output on low stage. The cfm is about 850 on first stage and 925...
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    Thanks. I was thinking the same thing about R8...

    Thanks. I was thinking the same thing about R8 insulation ductwork. It seems to be better to use in unconditioned spaces.
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    These were at the registers. Thanks for asking.

    These were at the registers. Thanks for asking.
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    I checked the temperatures back in August and for...

    I checked the temperatures back in August and for the supply air it read about 67 deg. The returns were closer to 80. When the new furnace was installed, the ductwork was sealed. The ductwork has R6...
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    I forgot to mention that we have a solar attic...

    I forgot to mention that we have a solar attic fan and it keeps the temperatures down usually in the 115 deg range in the attic.
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    Thanks for the info. Also sometimes the air never...

    Thanks for the info. Also sometimes the air never feels "very cold". Mostly on warmer days. The air is pretty cold, but not as cold as our first floor system and basement system. On hot days we lose...
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    Thanks. The thermostat is a Honeywell RTH6450D....

    Thanks. The thermostat is a Honeywell RTH6450D. The cycles usually range from 5 minutes to 9 minutes. Except on hot days the cycles are like 30 mins to 1 hour. Sometimes 2 hours depending how hot it...
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    Thanks. I'm also wondering why the system is...

    Thanks. I'm also wondering why the system is short cycling (only on days that are not too hot).
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    I don't exactly if the cfm is at that setting,...

    I don't exactly if the cfm is at that setting, though I believe it's around that. Did you check Lennox.com to see the airflow settings in the specifications sheet? I could be wrong you never know. We...
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    The ductwork is all 8 inch. I should have said...

    The ductwork is all 8 inch. I should have said that in my first post. Hope this helps.
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    What's the proper cfm for a 2 ton system?

    Hello. It's me again. I have a question about the blower cfm of our upstairs system.

    Our upstairs system is a 2012 Amana Distinctions (Goodman, of course) SSX14 2 ton A/C unit matched up with a...
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