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"

Nu Calgon 4296 60 Pan Treat Scum 200 Tablets

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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€ 66.83

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

♻️ Keep your HVAC flawless—clean smarter, not harder!

VERSATILE USE - Perfect for condensate pans and humidifiers, keeping HVAC systems fresh and clog-free.
COST SAVING CLEAN - Slash extra repair bills by preventing odors, clogs, and overflows before they start.
TRUSTED PERFORMANCE - Over 2,000 five-star reviews prove it keeps drains flowing and odors gone.
ECO FRIENDLY FORMULA - Safe, non-corrosive, and biodegradable—good for your system and the planet.
EFFORTLESS MAINTENANCE - Just drop a tablet to dissolve sludge and scum—no mess, no stress.

Nu-Calgon Pan-Treat delivers 200 fully water-soluble tablets designed to prevent sludge, scum, and odors in condensate pans and humidifiers. This biodegradable, non-toxic formula eliminates costly maintenance from clogged drains and overflows, ensuring HVAC systems run smoothly and efficiently with minimal effort.

Specifications

ASIN	B003N5AS60
Best Sellers Rank	#27,681 in Health & Household ( See Top 100 in Health & Household ) #18 in Commercial Drain Openers #60 in Chemical Drain Openers
Brand	Nu-Calgon
Brand Name	Nu-Calgon
Customer Reviews	4.7 out of 5 stars 2,028 Reviews
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 Product Benefits Prevents build-up, eliminates extra maintenance costs, safe and non-corrosive, does not form deposits, and cleans humidifier water See more
Scent	Unscented
State of Matter	Solid
State of matter	Solid
UPC	681001429665
Unit Count	1.0 Count

Reviews

K**K

17.11.2025

D**Z

30.09.2025

N**I

5.10.2025

M**A

26.03.2026

J**N

1.10.2025

T**M

30.04.2026

D**M

6.09.2025

J**.

28.06.2025

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