really quiet central AC/dehumidifier?

What do you think happens when a heat pump go into defrost when its heating during the winter?? the short answer is that when it goes into defrost, its actually shifting into cooling mode and half of the heat strips come on to keep the thing from blowing snowballs inside while its defrosting outside. Dehumidification while in heat mode with the proper controls does the same thing. it shifts to first stage cooling mode and brings on half the strips to dehumidify. but don't worry about it because if its set up right, you'll never know that its even happening. it just makes your home comfortable.

There is no riddle to it. Reading a graph isn't going to answer your question either.

No resi system will cool down below 68 degrees without adding a freeze stat and defrost strips..... at least not without freezing the coil inside.

I am still trying to understand a couple of things here.... First is where your located...I must have missed that part, and second, why do you wanna turn the place into a walk in reefer, when thats not the purpose of a comfort system??

Reply to
Noon-Air
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With the questions she's asking, I wouldn't count on it... What if, she paints the windows black so the sunlight doesn't shine in? Or what if, she has dirt hauled in to cover half the walls? Or what if...

Reply to
KJPRO

or what if she had some thing other than a liberal arts degree?? or was a republican??

Reply to
Noon-Air

Graven Water posted for all of us...

A good comparison would be your car A/C & heat. Using it to demist the windshield the outside temp is say 50 and humidity is high and the people in the car are too. The defroster will be used and you will turn up the heat because your nipples are popping. The outside air is run the a/c then the heater coil warms it. You are comfy and fog is gone from the windows. The a/c is condensing the humidity by dropping the temperature and the heater is warming it for comfort.

Reply to
Tekkie®

good explanation, but it it involved a possible DUI. need to do a drug test on her too.

Reply to
DIMwit

What are you talking about Stormin? What would be a duct work nightmare?

To be quite frank [honest] a reputable refrigeration tech could easily build a add on to your system, but running a third pipe, bringing hot gas to a indoor coil that is installed after the evaporator. The subsequent liquid discharge from the reheat coil could be piped [using a check valve] directly to the indoor evaporator metering device, the suction would remain going to the outdoor condenser / compressor section with a solenoid valve that could change the hot gas direction from the outdoor condenser coil to the indoor reheat coil.

The only problem, is you would have more heat coming into the home than is being removed, but the result is dehumidified air. Using a P/E chart, the difference would be the heat of compression [and added electrical heat from the compressor] would be added to the air as it left the system. Eventually the system would have to change over to nominal air conditioning to 'remove' the added heat, and then could [if the humidistat is not satisfied] return to dehumidification.

Get your credit card out though.

Reply to
Zyp

I was getting visions of ducting the indoor air to the condensor, and then the hot blast from the condensor into the house.

The condensor in the duct work could be done. If there was some kind of thermostat and a variation on a heat pump reversing valve. Divert the heat into the air stream when the house needed the heat. I've never seen one, but it sure seems possible. Great idea, chief.

Reply to
Stormin Mormon

Thu, 26 Jun 2008 07:56:15 -0500 from Noon-Air :

Which manufacturers?

Reply to
Stan Brown

Thu, 26 Jun 2008 15:14:37 -0500 from Noon-Air :

Now you're just being silly.

I *took* a thermodynamics course in college, as it happens and I can tell you that no home heating/cooling devices were mentioned, much less analyzed in enough detail to answer the PP's questions. Heck,

*humidity* wasn't mentioned. I suspect most thermodynamics courses would be the same.

If you want to help, provide information, not red herrings.

Reply to
Stan Brown

Ok... then YOU answer all her questions.

Reply to
Noon-Air

Pick one.... most all of the manufacturers have them. No, I am not gonna do your homework for you.

Reply to
Noon-Air

If you want help, why not call someone in your area?

Reply to
KJPRO

Stormy;

I just explained how a dehumidifier works.... read above. The only ducting needed would be maybe a transition between the reheat coil and the evaporator. The rest would be refrigerant piping so the hot gas discharge could reheat the cold supply air from the evaporator coil. The actually temperature leaving the system during dehumidification would be a little warmer than the air going in. The humidity of the air leaving would be considerably less. A psychometric chart would be used to determine the effectiveness of the system.

Reply to
Zyp

Because that might have a cost compenent attached to it.

BTW: Noon-Air, are you charging $$$ for estimates on system installations or replacements yet?

Most auto body shops do, and you have to go to them.

Reply to
Zyp

Estimates are what I tell them over the phone for free. If they want a written quote, then thats gonna cost them.

Reply to
Noon-Air

We genrally won't give a quote over the phone [unless we're famillar with the job - as in a regular customer].

But damn, the price of fuel, the two hours to go out and see what it is they have, and what it is they want to do, and then write it is just getting out of control.

Reply to
Zyp

The estimate they get over the phone is "We have replacement systems from $4,500 and up". A quote is what I write for them that includes a basic "whole house" load/loss calc, Specific model numbers of the equipment, the ARI certificate, GAMA cert if applicable, and has a fixed price for 30 days. Thats not free.

Reply to
Noon-Air

Is your local competition doing the same thing?

Reply to
Zyp

You did describe a whole house dehumidifier. And, then, I described my mental concept, ducting the hot blast from the condenser into the house. And now you're explaining again. How many times would you like to do this? I mean, you're light on your feet, but my dancing abilities are limited.

Reply to
Stormin Mormon

That's why charging for a quote makes sense... it gets rid of the price shoppers.

Reply to
KJPRO

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