John S asked:


I graduate from a Heating and Cooling course in 2 weeks.

I know the Cooling season is a ways off, but I still really want to know the average high and low side pressures of common refrigerants in Residential Systems.

For instance, what are the typical high and low side pressures on a properly charged system for:

R-22 on a 1 ton
R-22 on a 1.5 ton

410a on a 1 ton
410a on a 1.5 ton

I understand that pressures will vary from day to day as the ambient temperatures change, but on average, what should these pressures be close to?

Any help with this question would be appreciated. Guesses, Links to helpful sites, etc..

Thanks.

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theo asked:


I have an old furnace which I can’t afford to replace.I also have three wells on my property.One is drilled 120 feet deep and two shallow wells abou 4 feet deep.Can I use any of these for geothermal heat in the Connecticut winters?

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ds_252 asked:


How much would it cost to set up geothermal for a single home. I know it can very but if you have any numbers at all that would be great and the sq. footage of the house.

Thank you

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Mandy T asked:


I’ll need duct work too! Replacing an old steam boiler with baseboard heat. What would a ballpark quote be for a system?

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Monte K asked:


I use oil hotwater baseboard heat. Will geothermal hook in to this type of system?

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Dilbert asked:


Also known as geoexchange heat pump or ground source heat pump.

How much did it cost them, and how well does it work for them? Do they ever have to supplement it with ordinary heating or air conditioning, or is it always plenty, even in the most extreme weather?

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Robert C asked:


Not sure I will get an answer here on yahoo, but won’t know unless I try.

My geothermal system is not worth a crap in the summer, in the winter it is amazing. I have had it checked by two different techs. The first guy said everything was fine and that she was giving all she has. Neither one could tell the tonnage, so it may just be that it is not enough tonnage for my 2250 sf house.

The second tech seemed to have a theory that made a lot of sense. Since the temperature difference in the water leaving the unit and the water coming back in was only about 7 degrees, he thinks that the closed loop is too short. It was installed in 95, and he states that some of the early systems had design errors made by the engineers. In other words, he states that the loop is probably not long enough to appropratly transfer the heat. I think he is correct.

My question is this.

Is there anything I can add to the return line that would further cool the return water? a radiator? etc.
Thanks for the answers so far.

Unfortunately, I can not just dig it up. I don’t have the schematics and not sure if it is a horizontal or vertical loop. It is also under my foundation and then goes, well, who knows. I suppose the right person could dig a deeper hole if it is vertical loop.

As for the auxillary heaters, it has none. And I have had zero problems in the winter, no matter how cold it gets outside, you don’t even feel any hot air, the house is just warm all over evenly. And bill is about 75 bucks. The summer bill has been as high as 350 because the thing does not cycle.

I have added two attic fans, but neither helped. Insulation seems fine, but will probably work on that as well. Will be tinting windows as well. Anything I can do to keep from spending 6-8 grand to replace the system.

Thanks again.

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jennipoo asked:


an old air conditioner and some old toys should i throw these things out as they are not useful but i cant part even with broken things,,, any suggestions..

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BETSY V asked:


I want to know how long central air condensers last. I clean my condnser with simple green once or twice before the winter. Is there anything else I should do to take care of it?

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cafe_lani asked:


I live 2nd floor and have window unit AC. This AC is evaporate type and no hose is attached.
My friend told me to use “coil cleaner” for cleaning.
Can you tell me how to use it? Just spray coil cleaner and wait for a while, then rinse it? (I could not use hose to rinse so, I have to spray water again though.)
My friend gave me AC cleaner (can) from Japan last year and it was really work well. But my friend moved back to US and I could not buy it…

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