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  1. Replies
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    Online HVAC Training

    I'd like to get licensed and certified in residential hvac. Are there any good online certification programs recognized by states that are worth their weight in salt?
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    You need to get these "Consultants" to "show...

    You need to get these "Consultants" to "show their work" on this. If you don't have electric resistive AUX heat, you don't have a setback problem.
  3. Big problem with air-source is they often get...

    Big problem with air-source is they often get installed with electric backup heat. I think the industry is really lame for only promoting geothermal. Basically all you get is constant COP with a...
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    Geothermal and Backup heat

    Do most geothermal heat pump systems get installed with some kind of backup heat?

    What are the pro's and cons to sizing a geo heat pump so that you don't need backup heat?
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    Hey, it's been two years, what did you wind up...

    Hey, it's been two years, what did you wind up going with?

    I got a heatpump and I love it. I made a spreadsheet to compare the cost between Portland General and NW Natural Gas and I save money 6...
  6. What is the best way to clean an Electronic Air filter

    I'm sure this has been discussed before but I wanted peoples opinions on the best way to clean the electronic air filter cartridges. I have a Honeywell 20x20 F series. I put them the dishwasher...
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    I didn't have much luck with the Trane guy...

    I didn't have much luck with the Trane guy either. He said I needed a way oversized unit for my house (1900sq/ft home in Portland OR) and he was coming in around 8000 dollars for a 3.5 ton. I think...
  8. I hear you on the reducing the load. I think a...

    I hear you on the reducing the load. I think a better vented roof with heat reflective shingles is the best way to do that for my house at this point.

    Cool-n-save does look like an interesting...
  9. You mean the thread with the broken link to the...

    You mean the thread with the broken link to the video that it is based on? Can you tell me where to find that video? Or is it not relevant to the rest of the thread? I'll go back and read the rest...
  10. Ok, I got my answer. Thanks. Now I'm going to...

    Ok, I got my answer. Thanks. Now I'm going to beat a dead horse, feel free to comment or flame as appropriate.

    On the sprinkler circuit near my condenser, I could cap off the 3 sprinklers and on...
  11. That threat doesn't talk about sprinklers and the...

    That threat doesn't talk about sprinklers and the link to the avi in post 1 does not work.. Sprinklers are already installed, the question is if you use them, will it help?
  12. Does running sprinklers over condenser unit increase efficiency?

    I'm curious what people think about this idea. Swamp coolers work by running water over a mesh where air passes through and evaporative cooling causes the temperature of the resultant air to be...
  13. Can my furnace even support this AC Tonnage?

    I've had three contractors come out and quote systems for me. The first one said 2.5 tons, the second said 3 tons and the last said 3.5 tons. I looked at my furnace and I don't think it will support...
  14. Then why do they have two different wires E and...

    Then why do they have two different wires E and Aux to control W1 and W2 if they are going to fire at the same time? Seems like they'd just tell you to jumper it if it didn't somehow support the dual...
  15. That is what the Vpro 8000 claims to do. (It says...

    That is what the Vpro 8000 claims to do. (It says it's a 3H-2C t-stat) But the confusion comes in where it says it supports second stage emergency heat but is still calling it a 2H 1C. Meaning...
  16. Will the YTH9421 let you set the dead band? ...

    Will the YTH9421 let you set the dead band?

    Are you sure the Vpro8000 can't support the dual stage heating on the backup heat? Or do you mean you can't get manual control of both stages?

    After...
  17. Considering a Single-Stage Heat pump with AUX 2-stage heat

    I have an existing 2 stage gas furnace. I was thinking of just getting AC, but my contractor talked me into the benefits of getting a heat pump and it's not much more money..

    I like the idea of...
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    Considering a Goodman

    I'm thinking of getting a Goodman 3-ton heat pump unit over the Rheem unit.

    Can anyone give me a feel for whether or not it's worth it go for the scroll compressor. Looking at the datasheets they...
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    Lowest noise AC Condensers

    I'm looking at Trane, Goodman, Ruud, and Rheem.

    Who is going to have the least noisy compressor and fan? The only place to mount this is right outside my living room. I'm in the 3 ton range. If...
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    Most and Least reliable brands for AC

    Hi,

    I'm looking at getting central AC split system. I have a Trane furnace unit now, but I'm curious which brands are the most reliable.

    Consumer reports came out and said that Rheem, Ruud,...
  21. Yes I know I made a mistake. The ground temp is...

    Yes I know I made a mistake. The ground temp is 55 F. It gets to 90 F outside. Not 90 C. bla bla bla. The point of the post was lost in my typo..
  22. Geo Thermal Cooling Only, No compressor, will it work?

    I have been looking into geo thermal heat pumps and the options with vertical vs horizontal loops. If the ground is always 55 degrees F, then in theory you have 55 degree water coming in from the...
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    Yaa, Hence the disclaimer. I don't have AC. ...

    Yaa, Hence the disclaimer. I don't have AC. This works for me. Probably needs more thought to work for siggeorge
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    Ok, I took a video of it in action. ...

    Ok,



    I took a video of it in action. Basically all you have to do is install a switch that shorts the green wire to the yellow wire. When the short is there, the fan runs in high speed mode,...
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    I'm surprised that there is a market at all for...

    I'm surprised that there is a market at all for the 1 hose units! You'll get one cold room and a bunch of really warm rooms. Does anyone have a good list of two hose units?
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