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  1. Replies
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    Unfortunately I can't get to the sill plate area...

    Unfortunately I can't get to the sill plate area for most of the basement since it is already finished. Too bad there isn't a way to foam that area from the outside.
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    Hi, Yes, partially closing the registers dropped...

    Hi,
    Yes, partially closing the registers dropped the delta to about 1*. Unfortunately I don't have access to the ducts to add dampers so I will need to make sure the registers stary partially closed...
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    Well the basement was finished before we moved...

    Well the basement was finished before we moved in. I think the sill plate has some fiberglass insulation under it so probably leaks. I tried to caulk the sill to foundation from the outside where...
  4. Replies
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    Main Floor to Basement - 3* delta ok?

    Hi,
    Ranch with open stairway to full finished basement with 2 bedrooms, bath, and large family/rec room. FHA system with supply in basement into each room with extra 2 supplies into large family/rec...
  5. Replies
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    402

    Thanks!

    Thanks!
  6. Replies
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    402

    Correct washer/dryer room venting?

    Hi,
    I have a washer/dryer utility room on the first floor with it's own supply vent for heat and AC. There is an exhaust fan in the ceiling however the damper inside the exhaust fan has been...
  7. Replies
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    Air Sealing Attic > Adding Insulation to Attic!

    Air Sealing Attic > Adding Insulation to Attic!
  8. Replies
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    1,617

    I just completed converting my crawl space to...

    I just completed converting my crawl space to condition space. I don't have ducting in the crawl but I do have a radon system just as you described. Here is what I did:
    - Sealed outside air vents
    -...
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    Configurable Register Boot???

    Hi,
    Ranch with finished basement needs more airflow to 1st floor great room. Basement has vents below great room closed. Does anyone make a register boot that can be used to redirect the air up to...
  10. Replies
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    2,183

    I am more interested in an energy audit AFTER I...

    I am more interested in an energy audit AFTER I have done everything I can do as a homeowner to address obvious energy reduction items. After caulking, foaming, blocking and insulating the obvious...
  11. Many Radon Mitigation companies do this as part...

    Many Radon Mitigation companies do this as part of installing Radon systems but they may do just the vapor barrier for you.
  12. How about a pic of the reworked system? Thx

    How about a pic of the reworked system?
    Thx
  13. Replies
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    462

    On most furnaces there is a set of switches...

    On most furnaces there is a set of switches allowing you to select how long the fan will run after the heating or cooling cycle ends. In heating mode the heat exchanger is still hot at the point...
  14. Replies
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    462

    Thanks, I finally found an older thread that...

    Thanks, I finally found an older thread that discusses this in depth.
    Gary
  15. Replies
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    462

    Fan timeout delay for AC operation

    Hi.
    What is the recommeded fan timeout delay when running AC this time of year. Should it be set for zero?
    Thanks,
    Gary
  16. The crawl space under the basement structural...

    The crawl space under the basement structural floor is due to expanding soils here in Colorado. I never heard of it before moving here. It makes sense except now I have to make sure the...
  17. When I lived in Boston it was a cellah and now in...

    When I lived in Boston it was a cellah and now in Denver it is a basement:)
  18. Hi, I should have also mentioned that this area...

    Hi,
    I should have also mentioned that this area is below a finished first floor (kitchen, entry hall, washer/dryer room and office) and above a subfloor conditioned crawlspace. I recall that in the...
  19. How to decide -conditioned or unconditioned basement mechanical space?

    Hi,
    I have a finished basement of about 1785 sf of which 360 sf is an unfinished area that contains storage, HVAC mechanicals (furnace, A-coil, humidifier, outside combution air and fresh air...
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    317

    Closed Crawlspace Report

    Hi,
    I came across this report and thought some here may be interested.

    http://www.advancedenergy.org/buildings/knowledge_library/crawl_spaces/pdfs/NCEMBT%20Report.pdf
  21. Replies
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    Thanks Joe. Very impressive. You must have done...

    Thanks Joe. Very impressive. You must have done a great job with the venting, sealing and insulating!
    Gary
  22. Replies
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    179,930

    Thanks Joe. Now I am even more curious. How...

    Thanks Joe. Now I am even more curious. How about some more questions?
    - What is the roofing material?
    - Is the house in the shade most of the afternoon? Surrounded by large trees?
    - Do you...
  23. Replies
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    179,930

    Joe, In your description you said "I added an...

    Joe,
    In your description you said "I added an attic tent". What is meant by an "Attic tent"?
    Did you add a radiant barrier? Trying to understand the details.
    Thx,
    Gary
  24. Replies
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    179,930

    Hi, What is the recommendeed ventilation with a...

    Hi,
    What is the recommendeed ventilation with a cement tile roof system. Currently I have gable vents with some soffit venting. Is it possible to install ridge vents with a tile roof?
    Thx,
    Gary
  25. Is this the unit here? ...

    Is this the unit here?
    http://www.filtersfast.com/Trion-Right-Angle-Air-Cleaner-Filter.asp

    If so it is designed by Trion for turning the right angle and housing the filter with the least amount...
  26. I am curious how you are planning to determine if...

    I am curious how you are planning to determine if you have created positive pressure inside the home? Can you use the manometer pictured in your avatar? I attached an article about estimating the...
  27. Replies
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    Ok, I guess I'll trust they set it up correctly....

    Ok, I guess I'll trust they set it up correctly.
    Thx
  28. Replies
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    1,524

    Airflow through a Y connector

    Hi,
    I had some system balancing done of my FHA system and I was checking the SPs after it was done and I have a question. If you have two 6 in. ducts going into a Y connector and the SPs are the...
  29. Hi, I have a Triton Air Bear with a 5 inch 25X25...

    Hi,
    I have a Triton Air Bear with a 5 inch 25X25 filter. I purchased some replacement filters but noticed (same part number, same merv rating, etc.) that the number of folds of the media were a lot...
  30. Replies
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    Thanks for the answers. I have a Heil 80% and I...

    Thanks for the answers. I have a Heil 80% and I am currently using the slowest speed for the heat cycle so that is what it must be running in fan mode.
    Thanks,
    Gary
  31. Replies
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    Fan speed when thermo calls for fan only?

    Hi,
    I have a Honeywell 8210 that allows me to have the furnace fan cycle on and off to circulate the air which works great. When the furnace receives a 'fan only" request from the thermostat does...
  32. Replies
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    Shophound, I am starting to think that I need to...

    Shophound,
    I am starting to think that I need to investigate the attic insulation and conditioning a bit more. The southfacing side of the home only has a few small windows and a large roof...
  33. Replies
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    Hi, Evening humidity in the shoulder seasons are...

    Hi,
    Evening humidity in the shoulder seasons are 30 to 50%. Highest in early morning of course. Early evening before sunset is usually less that 20%.

    cem-bsee: Trying to automate so when we...
  34. Replies
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    Thanks Beenthere, I see your point about the...

    Thanks Beenthere, I see your point about the 100CFM. It wouldn't put a dent in cooling the house down and it would tend to make the furnace fan run all day long. It may even use more energy than...
  35. Replies
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    Ryan, I am only thinking of this as a cost...

    Ryan,
    I am only thinking of this as a cost savings. We tend to have long periods of this kind of weather so I could save a bit it the AC doesn't have to be used until summer. I also have the...
  36. Replies
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    I am having an outdoor fresh air return added to...

    I am having an outdoor fresh air return added to the system as part of the rework being done. It normally would be configured to only allow outdoor fresh air during the heating and cooling cycles by...
  37. Replies
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    Cooling house in non-cooling season?

    Hi,
    Thanks for continuing to answer my questions on HVAC. In spring (now) and fall and at other times throughout the year we quite often have low nightime temps (30 to 50) and high daytime temps...
  38. Replies
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    OK I was just curious. Where I am in Colorado it...

    OK I was just curious. Where I am in Colorado it is pretty dry so perhaps they are not as commonly used.
    G
  39. Replies
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    What is the reason they are sometimes added to an...

    What is the reason they are sometimes added to an existing orifice evaporator? It appears retrofit kits are sometimes offered by manufacturers.
    G
  40. Replies
    8
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    893

    Does TXV on evaporator save energy ($)?

    Hi,
    Just curious. I noticed that some evap coils come with TXV valves and some come with a fixed orifice size.
    Does a TXV make the system more efficient?
    Can one be added to an existing system?...
  41. Care to service ducts in this crawlspace...

    Yikes! Wouldn't want to run into them!

    http://www.thedenverchannel.com/news/18941688/detail.html
  42. Replies
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    I am assuming you have a new "pad" installed as...

    I am assuming you have a new "pad" installed as well and have cleaned all of the calcium buildup from the plasitic water distribution part that feeds the "pad".
  43. Replies
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    Hi, I have a humidifier that has a seperate fan...

    Hi,
    I have a humidifier that has a seperate fan however there is a constant flow or water that I would not describe as a trickle. I have the fan set on CIRC on a Honeywell thermostat so it's...
  44. Replies
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    Hi, I had this problem and it turned out to be...

    Hi, I had this problem and it turned out to be large air leakage in the returns that was continually drawing in unconditioned air. Once I patched up the returns the humidifier had no problem raising...
  45. Hi, James80031, I am thinking about...

    Hi,
    James80031, I am thinking about implementing recommendations contained here:
    http://www.e-star.com/publications/crawl.pdf
    Starting on p 14 are the details.
    G
  46. OK, thanks.

    OK, thanks.
  47. Thanks, Beenthere, Do you need to have a pitot...

    Thanks, Beenthere,
    Do you need to have a pitot tube to measure velocity pressure? If you are just trying to find out the relative differences instead of an exact airflow can you just put one tube...
  48. Yes. Here it is: Performance Figures-AMG...

    Yes. Here it is:
    Performance Figures-AMG Maverick, Radon Extract Fan CFM at STATIC PRESSURE
    0" 0.25" 0.5" 0.75" 1.0" 1.25" 1.5" 1.75" 1.88"
    221 192 163 134 ...
  49. Can you use SPs to determine relative CFMs?

    Hi,
    I have a crawl space that I am converting to conditioned air and at the same time I want to use it to meet ASHRAE exhaust ventilation. An exhaust fan is connected to 6in PVC. If I split this...
  50. Replies
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    OK, thanks for the feedback. I am going to have...

    OK, thanks for the feedback. I am going to have the work done despite the $$ since I want to make sure when the 90+ degree summer days arrive I will have good cooling and air distribution. I will...
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