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  1. #1
    Join Date
    Jan 2019
    Posts
    2
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    Humidity Levels for Dog Daycare Business in Orlando, FL

    Hello,
    I am in the process of opening a franchised dog daycare business, and my corporate office just told me I may have an issue with humidity levels with my current HVAC system that was designed to my corporate office specs. Apparently, my corporate office's acceptable humidity range is 40-60%, however, my current designed HVAC system is going to end up putting out about 70-74% humidity on average days down here in FL. Which is a little much. Why or how they didn't catch this earlier in the design stage, I cannot answer - as this is is now costing additional money and delays.

    Obviously, since I am now in my build out stage of my store, time is money. Everyday we delay getting open we are losing money on my end, and I know my corporate office is under pressure to get open as well. They went back to the drawing board, and found a new system with a dehumidifier built in, and now my corporate store is now telling me:
    "With the new units we're looking at an average 60-65% humidity in the humid/hot months and can expect to be over 70% on the most severe days."

    With that amount of humidity, will that cause severe issues for my store? Mold, etc? Or will it be super uncomfortable to work in?

    If I push back on this, I am likely losing 6+ weeks on my schedule, and it will cost thousands of more dollars to correct/fix. I know that they are in a hurry to get me open , but I just don't want to be the franchisee stuck living with the issue.

    If this isn't such an issue, and I can use a plug in dehumidifier on the bad days, and make it work, then I am possibly ok with moving forward as it......however, I am by no means an expert with humidity and am seeking advice from the experts.
    Thank you in advance,
    Angela

  2. #2
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    32,178
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    You office system is not so much "putting out" that humidity, however it WILL fail to remove enough of it.

    I service a large Pet Store chain, and I can tell you that dog daycare, grooming, and washing areas all have special equipment. The two industry leaders use Lennox equipment, and the special ones are referred to as "Humiditrol" units. They have a reheat coil that prevents the room temp from becoming too cold as the system runs to remove humidity.

    Dogs are excited just to be in the company of other dogs. The large chains have special tiled rooms with a drain so the room can be hosed down when needed. Excited dogs get hot and need to have dry air around them to remain cool.

    Regular AC will not be sufficient for this purpose.

    In my area, a daycare room might have 3-5 tons of cooling capacity. In a place like Florida, you will need more.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist
    Member, IAEI

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  3. #3
    Join Date
    Jan 2019
    Posts
    2
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    Thread Starter
    Thank you for the information. And yes, you are correct - my mistake, it will be humidity levels I am trying to control / remove.
    I appreciate your input

  4. #4
    Join Date
    Jun 2014
    Location
    Dover, DE
    Posts
    11,849
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    What are you doing for fresh air/building air exchanges?
    I havent failed. Ive just found 10,000 ways that wont work. - Thomas Edison

    Its not whether you get knocked down, its whether you get up. - Vince Lombardi

    "In this house we obey the laws of thermodynamics" - Homer Simpson

    Local 486 Instructor & Service Technician

  5. #5
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    27,224
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    You WILL need the help of a PE to stamp the plans for this project.

  6. #6
    Join Date
    Jun 2003
    Location
    Madison, WI/Cape Coral, FL
    Posts
    9,768
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    On the right track. How much fresh air are you going to supply to meet the code? If we know the cfm of fresh air required, we can comment on the a/c and dehumidifier requirements.
    Usually a correctly sized a/c will maintain 40-60%RH during peak cooling if the a/c is setup correctly. During low sensible cooling loads and high outdoor dew points supplemental dehumidification is needed.
    The supplemental dehumidification is based on the number of animals and the amount of fresh required.
    As others have stated, a PE a local person, that you have figure this all out and sign the building specs.
    Keep us posted.
    Regards Teddy Bear
    Bear Rules: Keep our home <50% RH summer, controls mites/mold and very comfortable.
    Provide 60-100 cfm of fresh air when occupied to purge indoor pollutants and keep window dry during cold weather. T-stat setup/setback +8 hrs. saves energy
    Use +Merv 10 air filter. -Don't forget the "Golden Rule"

  7. #7
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    27,224
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    Quote Originally Posted by Angela Hubbard View Post
    Thank you for the information. And yes, you are correct - my mistake, it will be humidity levels I am trying to control / remove.
    I appreciate your input
    From several years ago
    https://hvac-talk.com/vbb/showthread...C-for-a-Kennel

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