is it okay to rise off this after it has been applied?

Yes give it a few minutes to work and then rinse. Remember to mix it with water to apply.

Will this kill any mold on the coils? Can I spray down the interior if I see mold in there as well to good effect?

John, I can't speak to mold, and I don't believe you'll find it referenced in the directions either. I can say it is a very effective coil cleaner. If your sure it's mold I would mix some water and bleach in a spray bottle. Be a lot cheaper. Good luck

How is this for treating musty odor or dirty sock syndrome? We read concentrated pine oil might help too. We already tried foam cleaner & rinse.

I am dealing with this now. A York heat pump system. Did you even find a solution to dirty sock syndrome for your system?

is this good for indoor?

Hmmm, this is coil cleaner. Can it be used to clean coils indoors? Sure, if you've got indoor coils it will clean them. Just spray it on and you're good to go. I vastly prefer to rinse it off when I'm done, but the label says you don't have to.

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Nu-Calgon 4168-08 Evap Pow'r No Rinse Coil Cleaner

Product ID: 3608254

Details

Brand
Nu-Calgon
Item Form
Liquid
Item Volume
1 Gallons
Scent
Natural
Specific Uses For Product
Coil

💧No-rinse formula saves time

🧴1 Gallon concentrated liquid

🇺🇸Made in USA quality

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€ 136.91

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In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Clean smarter, not harder — the no-rinse coil cleaner for pros.

ECO SMART EFFICIENCY - Uses ambient humidity to naturally flush coils, reducing water waste.
PRO GRADE COMPATIBILITY - Designed for evaporator coils with easy application via Nu-Calgon sprayers.
CONCENTRATED GALLON SIZE - Generous 128 fl oz volume ensures long-lasting supply for multiple cleanings.
EFFORTLESS CLEANING POWER - No-rinse formula means less downtime and faster maintenance cycles.
TRUSTED AMERICAN CRAFTSMANSHIP - Proudly made in the USA for consistent, reliable performance.

Nu-Calgon 4168-08 Evap Pow'r No Rinse Coil Cleaner is a professional-grade, US-made liquid cleaner designed specifically for evaporator coils. Its unique no-rinse formula leverages ambient humidity to flush away grime, saving time and water. Packaged in a concentrated 1-gallon size, it offers efficient, eco-friendly maintenance with proven reliability in commercial and industrial settings.

Specifications

ASIN	B000R7ZS08
Best Sellers Rank	#76,562 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #304 in Commercial All-Purpose Cleaners
Brand Name	Nu-Calgon
Contains Liquid Contents?	Yes
Customer Reviews	4.4 4.4 out of 5 stars (525)
Global Trade Identification Number	00783961284619
Item Form	Liquid
Item Volume	1 Gallons
Item Weight	4.54 g
Manufacturer	APR Supply Co.
Model Number	4168-08
Number of Items	1
Part Number	3578410
Scent	Natural
Size	128 Fl Oz (Pack of 1)
Special Features	No Rinse
Specific Uses For Product	Coil
UPC	681001416801 783961284619
Unit Count	128.0 Fluid Ounces

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