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4.5 of 167 reviews Verified Reviews

4–5 Ton Cased A-Coil – 24.5” Width – Multi-Position – R-454B – Pre-Charged – Model MCMP4860DOTB

By MRCOOL® SKU MCMP4860DOTB
Regular price $871.00
Sale price $871.00 Regular price $1,088.75
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Key Features At A Glance
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Estimated arrival: Jun 10 – Jun 12
Based on order date & typical delivery times

4–5 Ton Cased A-Coil for High-Capacity HVAC Applications

Designed for high-capacity residential HVAC systems, this 4 to 5 ton cased A-coil delivers efficient heat transfer and simplified installation. Pre-charged with R-454B refrigerant, it reduces setup time while supporting modern efficiency standards and environmentally responsible operation.

Key Features

  • 4–5 Ton Capacity – Ideal for larger residential HVAC systems
  • Pre-Charged with R-454B – Reduces installation time and supports low GWP refrigerant standards
  • Multi-Position Installation – Supports upflow, downflow, and horizontal applications
  • TXV Metering Device – Optimized refrigerant control for improved efficiency
  • Aluminum Coil Construction – Corrosion-resistant design for long-term durability
  • Integrated Drain System – Dual front drains and side drain pan for horizontal installs
  • A2L Leak Detection Sensor – Added safety for modern refrigerant systems
  • 24.5” Cabinet Width – Designed for maximum airflow in high-capacity systems

Performance & Compatibility

This A-coil is designed to pair with compatible condensers, heat pumps, and furnaces to create a complete HVAC system. Its higher tonnage and larger cabinet size make it ideal for larger homes and systems requiring increased airflow and performance.

Installation & Flexibility

Supporting upflow, downflow, and horizontal configurations, this coil provides flexibility for installation across a wide range of residential applications. The larger cabinet supports proper airflow in high-capacity systems while maintaining compatibility with standard HVAC layouts.

Technical

Specifications
Tonnage 4–5 Ton
Refrigerant Type R-454B
Metering Device TXV
Liquid Line Size 3/8"
Suction Line Size 3/4"
Installation Type Upflow / Downflow / Horizontal
Cabinet Width 24.5"

Dimensions & Weight

Width 24.5"
Depth 21"
Height 28"
Weight 81 lbs

Durability & Build Quality

Constructed with corrosion-resistant aluminum, this A-coil is built for long-term durability and efficient heat transfer. Its design ensures consistent performance across high-capacity HVAC systems.

Warranty

  • 10-Year Limited Parts Warranty

Build a Complete System

Pair this A-coil with a compatible condenser and furnace to create a complete heating and cooling system. Ideal for large residential installations requiring maximum performance and efficiency.

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No Vacuum Pumps. No Charging. Just Faster Installs.MRCOOL Pre-Charged A-Coil

FAQs: Installation, Sizing, Compatibility & Performance

Thinking about upgrading your HVAC system with a MRCOOL® pre-charged A-coil? Below you’ll find answers to the most common questions about installation, compatibility, refrigerant, and performance. Whether you’re a DIY homeowner or an HVAC professional, these answers will help you choose the right system and install it with confidence.

What is a pre-charged A-coil and how does it work?

A pre-charged A-coil is an evaporator coil that comes factory-loaded with refrigerant, eliminating the need for vacuuming and manual charging during installation. The MRCOOL® Pre-Charged Coil is designed to work with MRCOOL No-Vac® line sets, allowing for a faster, safer, and more DIY-friendly HVAC installation process.

Do MRCOOL pre-charged coils require a vacuum pump or HVAC technician?

Nope! One of the biggest advantages of MRCOOL pre-charged coils is that they are designed to be installed without a vacuum pump or specialized HVAC tools when paired with MRCOOL No-Vac® line sets. This makes them ideal for DIY installations and significantly reduces labor costs.

What refrigerant do MRCOOL pre-charged A-coils use?

MRCOOL pre-charged coils use R-454B refrigerant, a next-generation, low global warming potential (GWP) refrigerant that is more environmentally friendly than older options like R-410A.

Are MRCOOL pre-charged coils compatible with existing furnaces?

Yes. MRCOOL pre-charged A-coils are designed to pair with existing gas or electric furnaces, allowing for a dual fuel HVAC system. This setup automatically switches between electric heat pump operation and gas furnace heating for maximum efficiency and comfort.

Can I install a pre-charged A-coil in different positions (upflow, downflow, horizontal)?

Yes. MRCOOL pre-charged coils feature a multi-position design, allowing installation in upflow, downflow, and horizontal configurations. This flexibility makes them suitable for a wide range of home layouts and HVAC system designs.

What are the benefits of a pre-installed TXV in an A-coil?

MRCOOL pre-charged coils include a pre-installed thermostatic expansion valve (TXV), which helps regulate refrigerant flow for improved efficiency, better temperature control, and optimized system performance under varying load conditions.

Can I use traditional copper line sets instead of MRCOOL DIY pre-charged line sets?

Yes. The MRCOOL pre-charged A-coil is compatible with both:

  • MRCOOL DIY pre-charged line sets
  • Traditional copper line sets

If traditional copper lines are used, the system will need to be vacuumed and charged by an HVAC professional just like a conventional HVAC installation.

DIY line sets are simply an easier option for homeowners who want to simplify installation.

How durable are MRCOOL pre-charged A-coils?

These coils are built with CoolGuard® corrosion-resistant technology, designed to extend the lifespan of the coil and protect it from environmental wear, making them a reliable long-term investment for residential HVAC systems.

What does “pre-charged” line set mean?

A pre-charged HVAC component contains the correct amount of refrigerant from the factory and is sealed inside the equipment.

MRCOOL DIY systems use pre-charged quick-connect fittings that keep refrigerant contained until the connections are made. Once the line set is connected, the valves open and the refrigerant flows into the system automatically.

This eliminates the need for:

  • Vacuum pumps
  • Manifold gauges
  • Refrigerant charging
  • Specialized HVAC tools

It allows the heat pump portion of the system to be installed using a simplified DIY process.

What outdoor units can be paired with the MRCOOL pre-charged A-coil?

The MRCOOL pre-charged A-coil is designed to work with several MRCOOL heat pump systems, including:

  • MRCOOL VersaPro Series – high-efficiency heat pump systems
  • MRCOOL Hyper Heat Series – heating performance down to extremely low outdoor temperatures
  • MRCOOL Universal Series – flexible installation options for many home configurations

These outdoor units can be combined with a high-efficiency gas furnace to create a complete dual fuel HVAC system.

What size pre-charged A-coil do I need for my HVAC system?

Choosing the correct A-coil size depends on your system’s BTU capacity and your home’s square footage. MRCOOL pre-charged coils are available in multiple sizes (such as 18k–60k BTU models), designed to match compatible condensers and furnaces for optimal performance. Proper sizing ensures maximum efficiency, comfort, and system longevity.

What are the advantages of using a pre-charged A-coil over a traditional evaporator coil?

A pre-charged A-coil offers a significantly easier and faster installation compared to traditional evaporator coils. With the MRCOOL® Pre-Charged Coil, there is no need for vacuuming, refrigerant charging, or specialized HVAC tools when used with MRCOOL No-Vac® line sets. This reduces installation time, lowers labor costs, and minimizes the risk of installation errors while still delivering high-efficiency heating and cooling performance.

Upgrade Faster with MRCOOL Pre-Charged A-Coils

MRCOOL pre-charged A-coils are designed to simplify HVAC upgrades without sacrificing performance. Built for use with MRCOOL No-Vac® line sets, these coils eliminate the need for vacuuming and manual refrigerant charging, making installation faster, easier, and more accessible for both homeowners and professionals. Whether you're replacing an existing coil or building a high-efficiency system, MRCOOL delivers reliable comfort with less hassle.

No Vacuum Required Installation

Factory Pre-Charged with R-454B Refrigerant

High-Efficiency Heating & Cooling Performance

Compatible with Existing Furnaces & Systems

Installation Notice: MRCOOL pre-charged A-coils are designed for simplified installation using No-Vac® line sets. System compatibility, electrical, and local code requirements should always be verified before installation. For gas furnace integration, professional installation may be required depending on your setup.

Rated 4.7 / 5 Stars
4700+ Verified Reviews

Comfort That Speaks for Itself

See why homeowners and pros alike trust MRCOOL DIY systems to deliver comfort, savings, and easy installation.

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee