I am trying to get the dehumidification feature up and running on my Carrier Infinity system, but I can't get the humidity below 60 in the summer. Is it possible this feature isn't working because the outside unit is not an Infinity?
Carrier Infinity unit inside but outside unit doesn't seem to be the same
harriedhomeowne
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"My house is 1980 sq feet. This is the 2nd story unit. The downstairs unit seems to be ok. "
Ahhhhhhhhh the rest of the story.
And I need to correct a previous post. The outdoor unit in question is a one and a half ton (1 1/2) unit. Thank you comfortdoc.
If humidity in the downstairs if fine and uncontrollable in the upstairs space then I double down on thinking there are air leaks in the upstairs ducting allowing outside air to enter.
Have you had a Carrier dealer technician look at the system to verify that it's functioning properly and go through your options etc. with you?
Ahhhhhhhhh the rest of the story.
And I need to correct a previous post. The outdoor unit in question is a one and a half ton (1 1/2) unit. Thank you comfortdoc.
If humidity in the downstairs if fine and uncontrollable in the upstairs space then I double down on thinking there are air leaks in the upstairs ducting allowing outside air to enter.
Have you had a Carrier dealer technician look at the system to verify that it's functioning properly and go through your options etc. with you?
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Yes, we have had the technician here multiple times. He has reinsulated but I honestly don't think the bubble wrap he is using is doing the trick and wrapping the arms off of the supply Line (which are hard duct) with insulation off of flex duct isn't cutting it either because that is getting wet on the inside. I def. think there is a leak, but how do you find it? Would it be prudent to take all insulation off and just put mastic tape over ever single joint that already has mastic?
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In addition, the condensation is on the outside of the bubble wrap. Do you think there is sweating inside of the duct as well?
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that shows there not enough insulation.
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I agree, but am not sure what I should ask for. Also, if there is sweating on the outside of the bubble wrap, can I be pretty sure there was sweating inside the ducts as well?
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Probably not but that doesn't mean water isn't getting in there.
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The ducts seemed pretty well sealed, but of course without a blower test it is hard to say. The cold air meeting the hot air would be in the attic itself, so that would make sense why it would condensate on the bubble wrap. Would the hot attic air be getting into the ductwork through any leak necessarily mean enough to create condensation? I guess the only way would be to get a camera in there. Is there a better insulation you recommend than bubble wrap for these ducts? Also, how in the world do you get it to seal around the boots and entry of supply/return through the attic floor?
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Insulating ductwork in attic- please advise
I have rigid duct in my attic. Here in MD my attic gets scorching. My ducts are covered in bubble wrap. They are sweating. Aside from finding any leaks, any suggestions on a better wrap that would provide more R factor and get rid of sweating?
I have rigid duct in my attic. Here in MD my attic gets scorching. My ducts are covered in bubble wrap. They are sweating. Aside from finding any leaks, any suggestions on a better wrap that would provide more R factor and get rid of sweating?
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We are going to rip out the unit and the ductwork. How can I prevent this issue again? I have no choice but to put ducts in attic. Is there anyway to insulate these correctly? It seems like the connection between the boots and floor is an area that is hard to seal as well s where the return and supply enter the attic from below. How does anyone get this metal from being exposed to the attic air?
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By installing it properly.
100 of thousands of units are in attics and they don't have issues.
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I appreciate that, but how do you install properly? What are the tricks of the trade? I need to guide their efforts and this has been an ongoing problem for us.
What do you wrap the ducts in? How do you get those connections sealed well?
What do you wrap the ducts in? How do you get those connections sealed well?
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1) Im not a duct guy, i have people that I pay to do that for me
2) That's something that takes years to master, thousands of $'s invested in equipment and tools!
Duct work is not DIY no mater what they say on those TV shows!
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This story just keeps getting better all the time.
The rules of this site do not allow for the professionals to give out any kind of DIY advice, but do allow us to guide homeowners in making informed decisions. To that end what answers you will get are those that will guide you to hopefully asking the right questions of the professionals you hire to make an informed decision as to who is best qualified to do the work you need done.
You've said you're ripping out the unit and all the ducting. Is this because of the humidity issue or was this the basis of why you were asking the original questions? If that is the case, it's like getting rid of a potentially perfectly good car because the tires need air.
You said you hired a "technician" that installed the bubble wrap. I question the qualifications of anyone that is hired to work on HVAC systems that would believe that bubble wrap on attic installed ductwork would #1) be appropriate #2) meet the building code requirements for minimal insulation values for attic installed ductwork #3) not be able to easily identify why you are having the problems you've described and be able to give you a detailed list of steps that would need to be taken to resolve your issues. All of these qualities and abilities are very seldom found in those that don't have the experience, training and most importantly the tools and equipment to make informed recommendations backed up with facts.
Sealing ductwork anywhere is not an easy task, but it is a doable job and that includes where it penetrates the ceiling. It's all about the product(s) used (quality and made for the job) and the skill level of those that apply it.
The rules of this site do not allow for the professionals to give out any kind of DIY advice, but do allow us to guide homeowners in making informed decisions. To that end what answers you will get are those that will guide you to hopefully asking the right questions of the professionals you hire to make an informed decision as to who is best qualified to do the work you need done.
You've said you're ripping out the unit and all the ducting. Is this because of the humidity issue or was this the basis of why you were asking the original questions? If that is the case, it's like getting rid of a potentially perfectly good car because the tires need air.
You said you hired a "technician" that installed the bubble wrap. I question the qualifications of anyone that is hired to work on HVAC systems that would believe that bubble wrap on attic installed ductwork would #1) be appropriate #2) meet the building code requirements for minimal insulation values for attic installed ductwork #3) not be able to easily identify why you are having the problems you've described and be able to give you a detailed list of steps that would need to be taken to resolve your issues. All of these qualities and abilities are very seldom found in those that don't have the experience, training and most importantly the tools and equipment to make informed recommendations backed up with facts.
Sealing ductwork anywhere is not an easy task, but it is a doable job and that includes where it penetrates the ceiling. It's all about the product(s) used (quality and made for the job) and the skill level of those that apply it.
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If I were to replace this system, is there a system combo that you suggest that does the best job at dehumidification?
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It turns out my indoor system is not infinity. The model is 25HBC518A0030060. The serial is 25HBC518A300
So it is a Carrier Comfort Heat pump. I am literally gutting my house for this humidity issue so I am desperate to put a system in that will dehumidify. Anyone??
So it is a Carrier Comfort Heat pump. I am literally gutting my house for this humidity issue so I am desperate to put a system in that will dehumidify. Anyone??
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That is the outdoor unit.
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any unit sized by Manual "J"
Ducts sized by Manual "D"
equipment sized by Manual "S"
and installed by "Qualified and Properly Trained" personnel
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Ugh. It is the FV4CNF002T00ABAA
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Not sure I understand what these sizes mean.
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