co2 empty

Apalchen said:

Wouldn't the heat output be less, since the quest are more efficient?

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Less heat, more efficient. He placed 3 big units for 1 225.

Heat output of the dehu is based on the btu/hr of the refrigerant system. Quest makes a model that has a separate condenser that can be placed outside like a minisplit and it actually cools some as it dehu's.

The dehumidifier works more efficiently when placed up high because of the larger temperature differential between the air and the evaporator coil. Hot air rises lol.

Renfro said:

Heat output of the dehu is based on the btu/hr of the refrigerant system. Quest makes a model that has a separate condenser that can be placed outside like a minisplit and it actually cools some as it dehu's.

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If your running enough of the house dehumidifiers to keep up but then switched to a quest wouldnt it put out lower heat since it's more efficient.

How would those quest that cool function in cold climates?

Apalchen said:

Wouldn't the heat output be less, since the quest are more efficient?

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You would think so, but in order to remove moisture, there has to be heat. ..... unless they have come up with some sort of alien technology I’m not aware of.

Renfro said:

Heat output of the dehu is based on the btu/hr of the refrigerant system. Quest makes a model that has a separate condenser that can be placed outside like a minisplit and it actually cools some as it dehu's.

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That would be awesome!.... but like everything, it comes at a price. I would think at a point, it would make more sense to just install another 3 ton mini split. This new Carrier I have pisses a pretty mean stream of condensation. About the same price (with my brother in the HVAC biz)

DoubleAtotheRON said:

That would be awesome!.... but like everything, it comes at a price. I would think at a point, it would make more sense to just install another 3 ton mini split. This new Carrier I have pisses a pretty mean stream of condensation. About the same price (with my brother in the HVAC biz)

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The extra cooling capacity is good but it won't help during lights out, at least not to a point. Any split unit, like a mini or a split dehu will cool some as it dehu's since the condenser coil is outdoors. So if you had the need for significant amounts of dehu during lights out (probably do) then you probably don't want a split dehu doing all the work or it gets too cold, maybe have a split dehu and a normal dehu, that way it doesn't get too hot or too cold... So if you already have some good dehu's and just need to add more dehu capacity then a minisplit AC makes perfect sense. Run it in dehu mode along side the existing dehu's during the dark period and then use it as an AC when the lights are on, easy enough to schedule with a wifi controller.

Apalchen said:

How would those quest that cool function in cold climates?

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That is a very valid question, I would hope that it has a low ambient (outdoor temp) rating or it would be useless in the winter. Probably something to ask their techs before dropping any coin.

Any split style system that we employ should be capable of running when it's cold outside so definitely verify that rating on any split AC or dehu.

Apalchen said:

If your running enough of the house dehumidifiers to keep up but then switched to a quest wouldnt it put out lower heat since it's more efficient.

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I can definitely see it pulling more water per BTU of heat generated. That said, it's gonna make heat. I know my quest 205 sure puts out the heat. Fortunately it only has to run much when the lights are off and the AC isn't pulling H2O.

It is important to remember that we don't want the temperatures to drop too much when the lights are out, at least not if fighting high RH% issues.

Cold air holds less water, so as the air cools the RH% rises.

Cold air is harder to dehumidify.

The only real difference between an air conditioner and a dehumidifier is the dehumidifier doesn't relocate the heat, it just uses the cold evaporator coil to pull condensate. A dehumidifier usually has less CFM as well but the main difference is just the relocation of heat.

So using a dehumidifier instead of a split style AC is generally required to pull a lot of humidity when we are not fighting the heat load of the lighting. If the dehumidifier cools the air when the lights are off it is making the problem worse.

I had an hvac tell me he likes to install two seperate units that way when lights it's off one can heat and the other will dehumidify. I was skeptical that would be efficient or remove enough water. I often find myself skeptical of HVAC guys, it seems most of them don't understand growing very much.

Apalchen said:

I had an hvac tell me he likes to install two seperate units that way when lights it's off one can heat and the other will dehumidify. I was skeptical that would be efficient or remove enough water. I often find myself skeptical of HVAC guys, it seems most of them don't understand growing very much.

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As an Hvac guy I can agree with this theoretically, but any Hvac system that doesn’t allow for multiple heat/cool/dehu controls in a single unit however is a waste of money and there is equipment up to the task. Controls are key, which piece of equipment will allow for the controls that you need. Equipment and controls may cost more but it can be done