I have a drained pan outside the unit in athe attic for backup. Is there another drain pan inside the unit?

All I know is thst mine doesn't. There's supposed to be a water level switch that shuts the unit off if the drain becomes plugged but mine recently failed and I had water dripping from a light fixture in the room below the unit. I am too old and stiff to crawl round the attic so I can't pur the tablets in the pan and I paid more than it would have cost to have a repair man come out a couple of times a year and do it for me.

What color are the tabs? and if blue, I would think that I would see this color in the outside drain area as it dissolves the muck, yes?

Yes the tablets are definitely blue but the condensate discharge looks like clear water. I've never collected it in a glass to see if there is any coloration but the appearance is just water without color.

Do these tablets deteriorate or chemically melt Styrofoam found in window air conditioners?

I emailed Nu-Calgon directly here's their answer:"Pan-Treat can be used in a window unit and will not harm the Styrofoam pan.Pat BrendelTech SupportNu-Calgon"

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Nu-Calgon 4296-60 Pan-Treat Scum 200 Tablets

Nu-Calgon 4296-60 Pan-Treat Scum 200 Tablets

Product ID: 4453301

Details

Brand
Nu-Calgon
Item Weight
12 ounces
Scent
Unscented
State of matter
Solid

🚫prevents sludge & scum build-up

🧪200 fully soluble tablets

♻️biodegradable & non-toxic

€ 59.72

Duties & taxes included

In stock

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Description

🛠️ Keep your system spotless, save time & money—because clean means smart!

VERSATILE USE - Perfect for condensate pans and humidifiers—keep every drip fresh and clear.
ECO SMART FORMULA - Non-corrosive, non-toxic, and biodegradable for guilt-free cleaning power.
COST CUTTING CLEAN - Eliminates expensive repairs from plugged drains and overflows.
EFFORTLESS MAINTENANCE - Just 1 tablet per ton monthly keeps your system pristine and odor-free.
ZERO RESIDUE GUARANTEE - Completely soluble tablets that leave no deposits in pans or drains.

Nu-Calgon 4296-60 Pan-Treat offers 200 easy-to-use, fully soluble tablets designed to prevent sludge and scum build-up in condensate pans and humidifiers. Its safe, non-corrosive, and biodegradable formula eliminates odors, plugged drains, and costly maintenance, ensuring efficient, hassle-free system performance.

Specifications

ASIN	B003N5AS60
Best Sellers Rank	#2,254 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #8 in Commercial Drain Openers #36 in Chemical Drain Openers
Brand Name	Nu-Calgon
Customer Reviews	4.7 4.7 out of 5 stars (2,058)
Global Trade Identification Number	00681001429665
Item Form	Tablets
Item Type Name	Pan-Treat Condensate Tablets
Item Weight	12 ounces
Manufacturer	Nu-Calgon
Model Number	4296-60
Number of Items	1
Part Number	4296-60
Product Benefits	Prevents build-up, eliminates extra maintenance costs, safe and non-corrosive, does not form deposits, and cleans humidifier water
Scent	Unscented
State of Matter	Solid
UPC	681001429665
Unit Count	1 Count

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