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Nu-Calgon 4291-90 – Nu-Brite 4X Ultra-Concentrate Condenser Coil Cleaner (1 Quart)

Name: Nu-Calgon 4291-90 – Nu-Brite 4X Ultra-Concentrate Condenser Coil Cleaner (1 Quart)
Brand: Nu-Brite
SKU: 681001429191
Price: 34.69 USD
Availability: InStock

Low stock: 3 left

$34.69 USD

Sale Sold out

Shipping calculated at checkout.

Key Features & Specifications

Genuine Nu-Calgon Nu-Brite® 4X Ultra-Concentrate Formula
High-Foaming Alkaline Action for Deep Coil Penetration
Safe Non-Acid Chemistry Brightens Aluminum Fins Quickly
Industrial-Strength Degreaser for Heavy Outdoor Grime
Space-Saving 1 Quart Bottle Makes 1 Gallon of Standard Wash

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Specifications

Product Details and Key Specifications:

Part Number: 4291-90
Manufacturer: Nu-Calgon (Genuine)
Part Type: 4X Concentrate Liquid Coil Cleaner
Bottle Size: 1 Quart (32 Ounces)
Mixing Ratio: Add 1 quart of 4X to 3 quarts of water to make 1 gallon of standard concentrate.
Rinse Required: Yes (Thorough Water Rinse)
Application: Outdoor Air-Cooled Condensers ONLY
Shipping Weight: 2.8 lbs

description

Nu-Calgon 4291-90 – Nu-Brite® 4X Ultra-Concentrate Condenser Coil Cleaner (1 Quart)

The Nu-Calgon 4291-90 (Nu-Brite® 4X) is a high-performance, Non-Acid Alkaline Condenser Coil Cleaner delivered in a space-saving ultra-concentrate format. This professional-grade solution provides the same industrial-strength cleaning and brightening power as the classic "Blue" Nu-Brite, but in a refined 4X formula that allows one quart to do the work of a full gallon of standard concentrate.

Technical Performance:

Utilizing a specialized surfactant and alkaline builder system, Nu-Brite® 4X produces a dense, expanding foam that physically pushes deeply embedded soil, grease, and oxidation out of the fin packs. It is specifically engineered for air-cooled condensers, cutting through the stubborn "baked-on" grime found on outdoor units. The formula provides the superior "brightening" results typically associated with hazardous hydrofluoric acid cleaners, but with a much safer, non-acid chemical profile.

Key Features and Function:

Feature 1: 4X Ultra-Concentrate Efficiency: One 32 oz. bottle mixes with water to create 1 gallon of standard concentrate, reducing storage space and shipping weight.
Feature 2: High-Foaming Alkaline Action: Expanding foam penetrates thick coils to lift and remove grease, cottonwood, and heavy dirt.
Feature 3: Non-Acid Fin Brightener: Safely restores the original "bright" look of aluminum fins, maximizing heat transfer and lowering system head pressure.
Feature 4: Advanced Degreasing Power: Specifically designed to emulsify petroleum-based oils and environmental films that trap dust.

Product Details and Key Specifications:

Part Number: 4291-90
Manufacturer: Nu-Calgon (Genuine)
Part Type: 4X Concentrate Liquid Coil Cleaner
Bottle Size: 1 Quart (32 Ounces)
Mixing Ratio: Add 1 quart of 4X to 3 quarts of water to make 1 gallon of standard concentrate.
Rinse Required: Yes (Thorough Water Rinse)
Application: Outdoor Air-Cooled Condensers ONLY
Shipping Weight: 2.8 lbs

🛠️ HVAC Depot Pro Tip: The "Dilution Math"

To use this with a standard 4:1 pump sprayer, first mix the entire quart of 4291-90 with 3 quarts of water in a separate container to create "standard" Nu-Brite. Then, use that mixture as you normally would. This 4X version is a lifesaver for technicians who have limited van space but need the heavy-duty cleaning power for multiple commercial rooftop units.

Cross-Reference & Compatibility:

The 4291-90 is the compact version of the industry-standard blue cleaner:

Industry Refs: Nu-Brite 4X, 429190, Blue Coil Cleaner Concentrate
Applications: Residential condensers, commercial RTUs, and heavy-duty refrigeration racks.

Specification

Refund policy

Refund & Return Policy

Last Updated: June 2026

At HVAC Parts & Equipment Depot, customer satisfaction is important to us. This Refund & Return Policy explains how returns, exchanges, and refunds are handled for purchases made through TopHVACParts.com.

Return Eligibility

We accept returns within 30 days of delivery.

To qualify for a return:

The item must be unused, uninstalled, and in its original condition.
The item must be returned in its original packaging.
Model numbers and serial numbers must match the original purchase records.
Proof of purchase or order confirmation is required.

Non-Returnable Items

The following items are not eligible for return or refund:

Installed or used parts.
Products showing signs of installation, modification, or damage caused after delivery.
Items missing original packaging.
Sale or clearance items.
Special-order or custom-order products.
Returns requested more than 30 days after delivery.

Restocking Fee

Approved returns may be subject to a 20% restocking fee.

The restocking fee will be deducted from the refund amount after the returned item has been inspected and approved.

Damaged, Defective, or Incorrect Items

If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery.

Email: support@tophvacparts.com
Phone: (214) 734-5222

We may request photographs and additional information to help process your claim.

If the claim is approved, we will provide a replacement, exchange, or refund at no additional cost to you.

Exchanges

We replace items only if they are defective, damaged upon arrival, or incorrectly shipped.

To request an exchange, contact us at:

support@tophvacparts.com

Refund Process

Once your return is received and inspected, we will notify you by email regarding approval or rejection of your refund request.

If approved:

Refunds will be issued to the original payment method.
Processing typically takes 7–14 business days after approval.
Your financial institution may require additional time before the refund appears in your account.

Return Shipping

Customers are responsible for return shipping costs unless the return is the result of:

Our shipping error,
A defective product,
A damaged product received upon delivery.

Original shipping charges are non-refundable.

We recommend using a trackable shipping service and purchasing shipping insurance for higher-value items.

Return Address

HVAC Parts & Equipment Depot
1135 E Plano Parkway, Suite 8
Plano, TX 75074
United States

Professional Installation Notice

Many HVAC products require installation by a licensed HVAC professional.

HVAC Parts & Equipment Depot is not responsible for damages resulting from improper installation, misuse, unauthorized modifications, or failure to follow manufacturer instructions.

Special Orders

Special-order products must be picked up within 30 days of purchase unless other arrangements have been approved.

Unclaimed special-order products may be returned to the manufacturer and may be subject to applicable restocking fees.

Contact Us

If you have questions regarding returns, refunds, or exchanges, please contact us:

HVAC Parts & Equipment Depot

Phone: (214) 734-5222
Email: support@tophvacparts.com

Refund & Return Policy

Last Updated: June 2026

Return Eligibility

We accept returns within 30 days of delivery.

To qualify for a return:

The item must be unused, uninstalled, and in its original condition.
The item must be returned in its original packaging.
Model numbers and serial numbers must match the original purchase records.
Proof of purchase or order confirmation is required.

Non-Returnable Items

The following items are not eligible for return or refund:

Installed or used parts.
Products showing signs of installation, modification, or damage caused after delivery.
Items missing original packaging.
Sale or clearance items.
Special-order or custom-order products.
Returns requested more than 30 days after delivery.

Restocking Fee

Approved returns may be subject to a 20% restocking fee.

The restocking fee will be deducted from the refund amount after the returned item has been inspected and approved.

Damaged, Defective, or Incorrect Items

If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery.

Email: support@tophvacparts.com
Phone: (214) 734-5222

We may request photographs and additional information to help process your claim.

If the claim is approved, we will provide a replacement, exchange, or refund at no additional cost to you.

Exchanges

We replace items only if they are defective, damaged upon arrival, or incorrectly shipped.

To request an exchange, contact us at:

support@tophvacparts.com

Refund Process

Once your return is received and inspected, we will notify you by email regarding approval or rejection of your refund request.

If approved:

Refunds will be issued to the original payment method.
Processing typically takes 7–14 business days after approval.
Your financial institution may require additional time before the refund appears in your account.

Return Shipping

Customers are responsible for return shipping costs unless the return is the result of:

Our shipping error,
A defective product,
A damaged product received upon delivery.

Original shipping charges are non-refundable.

We recommend using a trackable shipping service and purchasing shipping insurance for higher-value items.

Return Address

HVAC Parts & Equipment Depot
1135 E Plano Parkway, Suite 8
Plano, TX 75074
United States

Professional Installation Notice

Many HVAC products require installation by a licensed HVAC professional.

HVAC Parts & Equipment Depot is not responsible for damages resulting from improper installation, misuse, unauthorized modifications, or failure to follow manufacturer instructions.

Special Orders

Special-order products must be picked up within 30 days of purchase unless other arrangements have been approved.

Unclaimed special-order products may be returned to the manufacturer and may be subject to applicable restocking fees.

Contact Us

If you have questions regarding returns, refunds, or exchanges, please contact us:

HVAC Parts & Equipment Depot

Phone: (214) 734-5222
Email: support@tophvacparts.com

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Cecil really saved me with troubleshooting tips over the phone. Thought I was going to have to replace the blower motor and ended up only needing a motor run capcitor. Thank you and God bless!

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Our AC went out during the hottest stretch of summer, and with a one-year-old at home, we were desperate for a quick fix. These guys came through big time — not only did they source the part faster than anyone else in the area, they also walked me through DIY troubleshooting while I waited. Trustworthy, knowledgeable, and run by a solid local family. As someone who owns rental properties nearby, I’ll be sourcing all my HVAC parts from them moving forward. Highly recommend!

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Had a power outage last night and during the 100 degree heat today noticed that the AC was not blowing any cold air. Pulled the capacitors to have them checked and also took video of the relay making noise even with the breaker was off. The proprietor and her staff were very friendly and helpful. She had the video analyzed and confirmed something was wrong. She checked one of the capacitors was a little low. Capacitor replacement is the biggest ticket item for HVAC repair. It is hundreds of dollars with the a capacitor only about $20.

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Cecil and his family have been a life saver. I walked in with very little knowledge on parts let alone how to repair my unit. All I had was my brother in FL who knows more than I do and Cecil at HVAC Depot. With 2 young kids at home I couldn't afford to wait for a HVAC tech. Cecil walked me through what I needed to know, even after hours when the shop closed. I successfully repaired the fan motor and replaced the capacitor. Thank you HVAC team for being totally awesome. Prices were amazing and I'm forever going to support this small family business. You and your family are what Texas is all about!!!

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My AC went out in our home on Friday night. I went out and got the capacitor details and took them here first thing Saturday morning. Lady at the counter was friendly and had the capacitor I needed! When I got home, I installed the capacitor and AC is all good!!

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Thanks for everything

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Frequently Asked Questions

Questions? We’ve got you covered

Can anyone buy from your store, or do I need to be a licensed contractor?

We are open to the public! Homeowners, landlords, and DIYers are all welcome—no license required.

What kinds of HVAC parts do you sell?

We carry blower motors, fan motors, capacitors, control boards, contactors, thermostats, filters, copper lines, refrigerants, and more.

Do you sell parts for specific brands like Trane, Goodman, or Lennox?

Yes, we stock OEM and compatible replacement parts for major brands including Trane, Goodman, Lennox, Carrier, Rheem, and others.

Can you help me find the right part for my system?

Absolutely! Bring in the part, model number, or a picture, and our team will help match you with the correct replacement.

Do you offer returns or exchanges on parts?

Yes, we accept returns or exchanges within a set time period—just make sure the item is unused and in original packaging. Ask for specific terms at the counter.

Do you provide technical support or installation services?

While we don't install, we can answer basic questions and refer you to trusted local HVAC technicians if needed.

Do you sell refrigerants to the public?

We sell certain refrigerants, but EPA regulations require certification for purchase of products like R-410A or R-22.

Do you ship parts, or is it in-store only?

We offer both! You can shop in person or call to arrange shipping if you're out of town.

Nu-Calgon 4291-90 – Nu-Brite 4X Ultra-Concentrate Condenser Coil Cleaner (1 Quart)