Opens in a new tab
Free standard shipping on eligible US orders $500+

Nu Calgon RX11-Flush 19.5 oz HVAC Refrigeration System Flush A2L MFG# 4300-30

SKU: 4300-30
Weight 4 lbs
Dimensions 12 × 11 × 5 in

$140.14

In stock — available to order.

Sold individually. Each quantity ordered is one unit. Kits are one complete kit; products sold by length use the stated length unit.

Same-item volume pricing
QuantityUnit priceSaving
1–4$140.140%
5–9$133.135%
10+$126.1310%

Estimate for this quantity before shipping. Tax display follows store settings. Existing cart quantities can increase the tier. Only one offer applies; a coupon replaces automatic pricing. For 20+ units, contact support for a quote.

Available to order.

Bulk quantity & quote

Enter the total quantity you need. We will confirm availability and a quote before you order.

Request this quantity →

Need a firm ship date? Availability may include supplier stock. Confirm availability before ordering for time-sensitive work.

Processing times & shipping information

Overview

Nu Calgon RX11-Flush – 19.5 oz HVAC & Refrigeration System Flush (MFG# 4300-30)

RX11-Flush is a non-toxic, non-flammable, ozone-safe solvent engineered specifically for flushing refrigeration and air conditioning systems. It is strong enough to rinse away particulate, sludge, carbon residues, acids, oils, and water, helping restore system reliability and performance.

RX11-Flush is commonly used for system cleaning after compressor burnouts or during system retrofits, reducing the need for time-consuming repeat service visits. Suitable for systems up to 4 tons and A2L approved.

Key

Features

  • 19.5 oz unpressurized canister
  • Non-toxic & non-flammable
  • Ozone-safe solvent
  • A2L approved
  • Removes sludge, acids, oils & moisture
  • Ideal for burnout cleanup & retrofits
  • Helps prevent repeat service calls
  • For HVAC & refrigeration systems up to 4 tons

Condition: Brand New

Product details

Part / SKU 4300-30

Package includes

  • Nu Calgon RX11-Flush 19.5 oz HVAC Refrigeration System Flush A2L MFG# 4300-30

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.

Match the manufacturer part number and equipment model to the listing. Check connection sizes, fuel type, pressure or capacity, voltage and dimensions where applicable. A similar appearance or part number alone does not confirm compatibility.

For help, send a parts inquiry with the part number, equipment model, label photos and quantity. Manufacturer documents and item-specific information, when supplied, are in the product details above.

Availability may include our inventory and supplier sources. Listed stock does not by itself confirm immediate dispatch. Ask us to confirm a ship date before ordering for time-sensitive work.

Shipping methods and charges appear at checkout where available. Freight, oversized and specially handled items may require a quote. See our Shipping Policy for processing periods, restrictions and delivery information.

Explore related products

More products in this category. Compare specifications and fit for your application.