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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4168-08 Evap Pow'r No Rinse Coil Cleaner

Product ID: 3608254

Details

Brand
Nu-Calgon
Item Form
Liquid
Material Feature
Natural
Scent
Natural
Specific Uses For Product
Coil

🧴1 gallon concentrated liquid

🇺🇸Made in USA quality

🚫💧No rinse required formula

477.04 DT

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Description

🧼 Elevate your HVAC game with no-rinse coil cleaning brilliance!

ECO CONSCIOUS SAFE - Chlorine-free and natural ingredients protect your environment and equipment.
PRECISION APPLICATION - Mixes easily with water for controlled, effective cleaning every time.
HUMIDITY ACTIVATED RINSE - Leverages ambient moisture to naturally flush away residue—smart cleaning innovation.
EFFORTLESS CLEANING POWER - Spray-on formula cleans coils deeply without rinsing, saving time and hassle.
TRUSTED AMERICAN CRAFTSMANSHIP - Proudly made in the USA, ensuring premium quality and reliability.

Nu-Calgon 4168-08 Evap Pow'r No Rinse Coil Cleaner is a 1-gallon, chlorine-free liquid cleaner designed for evaporator coils. Made in the USA, it features a no-rinse formula that uses ambient humidity to flush away dirt, simplifying maintenance while protecting equipment. Ideal for professionals seeking efficient, eco-friendly coil care.

Specifications

ASIN	B000R7ZS08
Best Sellers Rank	#66,250 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #248 in Commercial All-Purpose Cleaners
Brand Name	Nu-Calgon
Customer Reviews	4.4 4.4 out of 5 stars (526)
Global Trade Identification Number	00783961284619
Item Form	Liquid
Item Volume	1 gallons
Item Weight	4.54 g
Manufacturer	APR Supply Co.
Material Features	Natural
Material Type Free	Chlorine Free
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
Surface Recommendation	Ceramic
UPC	681001416801 783961284619
Unit Count	128 Fluid Ounces

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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477.04 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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