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

Search:

Type: Posts; User: engineerguy

Page 1 of 4 1 2 3 4

Search: Search took 0.01 seconds.

  1. Replies
    5
    Views
    3,111

    Yes, the absence of frost is an indicator of heat...

    Yes, the absence of frost is an indicator of heat loss. That heat loss can come from less insulation or from warm air leaking up through the ceiling.
  2. Replies
    11
    Views
    1,068

    McMaster-Carr has a selection of silver solders. ...

    McMaster-Carr has a selection of silver solders.
    www.mcmaster.com
  3. A realtor told me that AC adds $1500 to the value...

    A realtor told me that AC adds $1500 to the value of a house in Ashland, WI. We expect about two weeks per year where the daily high is over 90 degrees.
  4. What everybody else said. The calculations for...

    What everybody else said.

    The calculations for my 1320 square foot house predicted 8500 BTUH (0.7 ton) heat gain at 95 deg F outside, so I had a one ton AC installed. The AC only ran 58% of the...
  5. CottyGee, The uninsulated garage doors THAT I...

    CottyGee,

    The uninsulated garage doors THAT I HAVE SEEN have all had sloppy loose joints barely sufficient to slow down the wind, along with construction that conducted heat around the edges of...
  6. Might be easier, and lower cost, to replace with...

    Might be easier, and lower cost, to replace with a new double wall steel insulated overhead door. These doors are steel on both inside and out with foam on the inside. You can glue on a 1" layer of...
  7. Replies
    27
    Views
    1,853

    Pstu, I measure over several complete on/off...

    Pstu,
    I measure over several complete on/off cycles. The system cycles only about once per hour because the house is so well insulated.

    I lived in Madison for four years when I was a student. ...
  8. Replies
    27
    Views
    1,853

    Pstu: I use a Hobo U12 data logger:...

    Pstu:

    I use a Hobo U12 data logger: http://www.onsetcomp.com/solutions/products/loggers/_loggerviewer.php5

    It's one of the few computer products that actually works the way they advertise. I...
  9. Replies
    27
    Views
    1,853

    My own house is 1320 square feet, lots of...

    My own house is 1320 square feet, lots of insulation, very tight air sealing, good windows, and zero shade. It has a one ton central ducted air conditioning system. Last summer, when it hit 102 deg...
  10. Replies
    9
    Views
    904

    Option 7: Spend an amount in the low to mid...

    Option 7: Spend an amount in the low to mid $X,XXX to upgrade the house insulation and air sealing. Then get a new estimate, which will be for 2 ton or even smaller. The duct size will be large...
  11. Replies
    7
    Views
    806

    Mechanical Engineer with a Professional Engineer...

    Mechanical Engineer with a Professional Engineer license in the state of Illinois. Try here for a start:...
  12. Replies
    166
    Views
    9,342

    If EverettsHVAC gas test finds gas, then it's...

    If EverettsHVAC gas test finds gas, then it's easy. Your furnace ran out of electricity. You need to give it some electricity. It's so simple even I can do it. I give you step by step...
  13. Replies
    45
    Views
    21,037

    Are they checking incoming power AT THE UNIT? ...

    Are they checking incoming power AT THE UNIT? Checking at the circuit breaker is not good enough.
  14. Replies
    13
    Views
    4,155

    Ah, memories. My grandmother had exactly the...

    Ah, memories. My grandmother had exactly the same setup in her basement. I rewired her basement after she mentioned seeing smoke coming out of the octopus whenever the wash machine was working hard.
  15. Replies
    15
    Views
    1,582

    I have a setup just like Pyropaul. HRV exhausts...

    I have a setup just like Pyropaul. HRV exhausts from the bathrooms, HRV supply to the return side of the airhandler. We have pushbuttons to put the HRV on high for 20 minutes. Those pushbuttons...
  16. Replies
    13
    Views
    1,313

    Not all engineers know what they are talking...

    Not all engineers know what they are talking about, although it would not be productive to say so to that particular idiot engineer. He sounds like the type that you need a baseball bat to...
  17. Replies
    13
    Views
    1,256

    The condensation needs to be solved before you...

    The condensation needs to be solved before you drywall. Make sure the vapor barrier is sealed correctly. Put a humidity meter in the basement and keep the humidity below 50%. You will probably...
  18. A bus is just a longer car? :) I want to do...

    A bus is just a longer car? :)

    I want to do better than 2,200 SF/ton the next time.
  19. That rule of dumb could be fun. I want to test...

    That rule of dumb could be fun. I want to test drive a bus with 50 seats X 36 hp per seat = 1800 hp.

    My house has one ton of cooling, 1320 square feet, and no shade. The AC ran 60% at 101 deg F...
  20. And if your house is insulated like my house, ONE...

    And if your house is insulated like my house, ONE ton will be too much. The load calculation will tell you.
  21. You clearly want to understand what is happening,...

    You clearly want to understand what is happening, so here is something to try.

    If the furnace is burning the correct amount of gas, AND the burner is correctly set up, then you are getting about...
  22. Thread: micro CHP

    by engineerguy
    Replies
    2
    Views
    512

    The idea has been around at least since the 1974...

    The idea has been around at least since the 1974 energy shortage. The difficulty has always been how to build an engine that will last 20,000 to 40,000 hours, automatically synchronize to line...
  23. Replies
    4
    Views
    1,429

    1) When the pressure of a saturated (or slightly...

    1) When the pressure of a saturated (or slightly subcooled) liquid suddenly decreases, some (not all) of the liquid flashes into vapor. You should be able to calculate how much flashes from a...
  24. http://www.buildingscience.com has the best...

    http://www.buildingscience.com has the best information on vapor barriers.
  25. Four gallons a day to keep the humidity at 25% on...

    Four gallons a day to keep the humidity at 25% on a cold day means that you have serious air leakage. It's better to seal air leaks than trying to humidify the entire outdoors.
Results 1 to 25 of 80
Page 1 of 4 1 2 3 4
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event