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Type: Posts; User: hcong

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  1. Replies
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    Ditto, always listen to the manufacturer and...

    Ditto, always listen to the manufacturer and don't do anything that can void the warranty like creating an opening in the back.
  2. The kW power consumption numbers are...

    The kW power consumption numbers are instantaneous, they doesn't always translate nicely into kWh which is what your electricity company bills you for.

    The nice thing about the ductless splits is...
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    California Energy Codes say minimum 13 SEER for...

    California Energy Codes say minimum 13 SEER for your original 2010 condenser. SEER is cooling capacity divided by watts of power used, so a 16 SEER should theoretically use 23% less electricity than...
  4. 9 tons should be more than enough for your house....

    9 tons should be more than enough for your house. How is your airflow from your supply registers? What temperature is coming from those supply registers. Lastly, does your ac keep running constantly...
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    Looks like your min and average temperatures are...

    Looks like your min and average temperatures are pretty low for a heat pump. From your product number, you don't have any aux/backup heat. Is it warming the place up at all? I see your indoor unit...
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    Thanks!

    Thanks!
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    Why is Rheem so hard to get a hold of?

    Anyone have old product data on an RRGG-07N42JKR? Any reps from Rheem located in the San Diego office?
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    College Degree Pros & Cons (Engineering) ...

    College Degree Pros & Cons (Engineering)

    Pros:
    1. Can say you have a degree.
    2. Can take 8 hour state exams and say you are now an "engineer-in-training"
    3. Can take another 1-2 day exam...
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    Poll: We are using Daikin REYQ240PBTJ with 12 zones of...

    We are using Daikin REYQ240PBTJ with 12 zones of mixed FXMQ & FXZQ. We have 12 branch selectors, and 12 nav. controllers. We have a MUA, exhaust fan, and Daikin VAMs for the OA requirements.

    We...
  10. Replies
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    Poll: Yeah, we just met with the building owner and one...

    Yeah, we just met with the building owner and one of them is German (Europe had these for a while) and it is pretty much a done deal. I made some phone calls and only negatives on heard was that the...
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    Poll: Why is that?

    Why is that?
  12. Replies
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    Poll: VRF Systems - Would you recommend one?

    We have a project here that is a potential for those City Multi-split systems. We looked at both Daikin and Mitsubishi options (24 tons). I know these systems have been around for 20-30 years in...
  13. Ultra Sensitive to Dust, Mold, Pollen Design

    Hi all,

    I have this client that is ultra sensitive to everything and has a phobia fans. So here is what I have looked at putting in. Let me know if you have any recommendations.

    1. Humidity...
  14. Wattage Meter to Track Roommate's Electric Use

    Hey, anyone know of a good wattage tracking meter that you can plug in appliances to? Roommate is running his server nonstop curious if that is really causing the high electric bills.
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    My question is why you would want that? Primary...

    My question is why you would want that? Primary drain getting overfilled?
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    There is also Sea World, Legoland, and Safari...

    There is also Sea World, Legoland, and Safari Park if you like theme parks. I would visit Balboa Park too.
  17. Thread: Garage Heater

    by hcong
    Replies
    15
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    1,729

    Try William Comfort Products. They come with...

    Try William Comfort Products. They come with direct vent/side vent options. No fan required.

    http://e-wfc.com/heating/
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    Haha, thanks your guys. I found a field installed...

    Haha, thanks your guys. I found a field installed propane conversion kit, made sure the unit said Nat. Gas/Propane... and I am done :)
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    Propane Rooftop Packaged Unit?

    Hey, I have a contractor who needs a propane packaged system... I never really heard of one before. Any suggestions?
  20. I usually look at overall performance over...

    I usually look at overall performance over whether the company brands it "Comfort" or "Performance." I do engineering and energy analysis so I focus on SEER and HSPF values. The higher the value the...
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    Then that examples why the spec manuals are off.

    Then that examples why the spec manuals are off.
  22. Replies
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    I would say 6 ton gas package unit... but the "J"...

    I would say 6 ton gas package unit... but the "J" in 48TJD is a little confusing since the spec manual says TJs are 15+ tons.
    ...
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    If manual J was done right and suggested a 3.79...

    If manual J was done right and suggested a 3.79 ton then your 4 ton system is fine. I usually don't oversize coils, but I know some do to get higher efficiency. So the coil should be fine.

    Is the...
  24. I don't think there is a boycott on Carrier...

    I don't think there is a boycott on Carrier products... people probably are just working or haven't had the time to look up model numbers. I usually spec Carrier.
  25. The "B" in HBC & FB4 stands for base model, the...

    The "B" in HBC & FB4 stands for base model, the "C" in HCC stands for comfort model. "V" in the FV4 is the performance model (variable speed). There are four tiers, base/comfort/performance/infinity....
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