• MRCOOL Pre-Charged Cased A-Coil with R-454B refrigerant and CoolGuard corrosion-resistant finish for high-efficiency HVAC systems
  • Pre-installed TXV and No-Vac line set connections on MRCOOL Pre-Charged Coil for easy DIY installation
  • MRCOOL Pre-Charged A-Coil installed in residential HVAC system for eco-friendly, high-performance home comfort
  • Compact MRCOOL Pre-Charged Evaporator Coil with R-454B refrigerant, multi-position application, and durable steel casing
  • Dual fuel HVAC setup featuring MRCOOL Pre-Charged A-Coil paired with heat pump and gas furnace for efficient heating and cooling
  • DIY Pre-charged A Coil MRCOOL Cased Multi Positional
1 6
Authorized Dealer

Pre-Charged "A" Coil

MRCOOL® Pre-Charged Cased Coil with R-454B

MRCOOL® Pre-Charged Cased Coil with R-454B

$571.00 USD
$571.00 USD
Sale Sold out
Shipping calculated at checkout.

SKUMCMP1824AOTB

TypeEvaporator A-Coil

Refrigerant Type: R-454B

BTU - Case Size

✅ This item is in stock!

Only a few left — 5 available

Estimated Delivery: November 29 – December 01

Based on order date & typical delivery times.
• Orders Typically ship within 2 business days

View full details

Have questions or need help selecting the perfect Mini Split system?

Talk with our expert HVAC team members now for assistance!!

Call Us Chat Now Design Your Own Mini Split Tool

PRODUCT DESCRIPTION

MRCOOL® Pre-Charged Cased A-Coil (MCMP*OTB Series) — R-454B, Pre-Installed TXV, Multi-Position, CoolGuard®

Upgrade smarter. Install easier. Live better. The MRCOOL® Pre-Charged Cased A-Coil is a next-generation, pre-charged evaporator coil designed for modern, high-efficiency HVAC systems. Featuring R-454B refrigerant, pre-installed TXV, CoolGuard® corrosion-resistant coil, and multi-position flexibility (upflow, downflow, horizontal), this coil streamlines installation—especially when paired with MRCOOL® No-Vac® pre-charged line sets. It’s a simple, safe, and sustainable way to upgrade home comfort.

Why Choose the MRCOOL® Pre-Charged Coil?

  • Pre-Charged with R-454B (Low-GWP): Eco-forward refrigerant choice.
  • Plug-and-Play Friendly: Engineered for MRCOOL® No-Vac® pre-charged line sets for a simpler, cleaner install.
  • Pre-Installed TXV: Optimizes refrigerant flow for reliable, high-efficiency performance.
  • CoolGuard® Corrosion-Resistant Coil: Durable construction that protects your investment.
  • Multi-Position Application: Flexible installation options—upflow, downflow, horizontal left, or horizontal right.
  • Built-In A2L Leak Detection Sensor: Added safety for peace of mind.
  • Compact Design: Ideal for tight mechanical spaces and retrofit installations.
  • 10-Year Limited Parts Warranty.

Dual Fuel Ready: Heat Pump + Furnace + Pre-Charged Coil

Build a powerful dual fuel system by pairing this pre-charged A-coil with a compatible heat pump and your existing gas furnace. The system can choose the most efficient heat source—electric heat pump in milder weather, gas furnace during extreme cold—while delivering energy-efficient cooling all summer.

High-Efficiency, Safety-Focused, Installer-Friendly

The MRCOOL® Pre-Charged Cased A-Coil (MCMP*OTB Series) is engineered for high-efficiency HVAC requirements. With R-454B refrigerant, a pre-installed TXV, and a CoolGuard® corrosion-resistant coil, you get dependable performance and long-term durability. Pair it with MRCOOL® No-Vac® pre-charged line sets to streamline installation and minimize handling—ideal for upgrades and retrofits seeking speed, consistency, and quality results.

Available Models (Indoor – MCMP*OTB)

  • MCMP1824AOTB
  • MCMP1824BOTB
  • MCMP3036BOTB
  • MCMP4860COTB
  • MCMP4860DOTB

Specifications

Model Power Supply Net Dimensions (W×D×H) Packaging Dimensions (W×D×H) Weight (Net/Gross) Refrigerant Liquid / Gas Line
MCMP1824AOTB 24V, 60Hz, 1Ph 14.5″ × 21″ × 18″ 16.92″ × 25.39″ × 19.88″ 42 / 50 lbs R-454B 3/8″ / 3/4″
MCMP1824BOTB 24V, 60Hz, 1Ph 17.5″ × 21″ × 18″ 20.47″ × 26.18″ × 20.47″ 42 / 50 lbs R-454B 3/8″ / 3/4″
MCMP3036BOTB 24V, 60Hz, 1Ph 17.5″ × 21″ × 23.5″ 20.47″ × 26.18″ × 25.39″ 59.5 / 68 lbs R-454B 3/8″ / 3/4″
MCMP4860COTB 24V, 60Hz, 1Ph 21.625″ × 21.5″ × 27.75″ 31.69″ × 25.59″ × 26.57″ 97 / 115 lbs R-454B 3/8″ / 3/4″
MCMP4860DOTB 24V, 60Hz, 1Ph 24.5″ × 21″ × 28″ 27.75″ × 26.18″ × 30.31″ 81 / 92 lbs R-454B 3/8″ / 3/4″

Installation Flexibility

This cased A-coil supports upflow, downflow, horizontal right, and horizontal left orientations, making it adaptable to a wide range of residential layouts and retrofit conditions. Compact cabinet sizing helps reduce install time and fit challenges.

Best Pairings & Use Cases

  • Ideal for dual fuel systems (heat pump + gas furnace) seeking efficient year-round comfort.
  • Great for retrofits and upgrades where installation speed and reliability matter.
  • Compatible with MRCOOL® No-Vac® pre-charged line sets for simplified, cleaner installs.

Warranty

10-Year Limited Parts Warranty when properly registered. See manufacturer terms and conditions for details.

Frequently Asked Questions

What makes a “pre-charged” A-coil different?

It ships with R-454B refrigerant and is designed to pair with No-Vac® pre-charged line sets for a faster, cleaner installation.

Does this coil work in multiple positions?

Yes—upflow, downflow, horizontal right, and horizontal left orientations are supported.

Is there built-in leak detection?

Yes, it includes an A2L leak detection sensor for enhanced safety.

Can I use this in a dual fuel system?

Absolutely. Pair with a compatible heat pump and gas furnace so the system can choose the most efficient heat source.

WHAT'S INCLUDED

  • Pre-Charged "A" Coil

  • T-X-V

🔧 MRCOOL Dual Fuel System — Questions & Answers

What is a MRCOOL Dual Fuel System?

The MRCOOL Dual Fuel System combines a high-efficiency heat pump with a gas furnace to give you the best of both worlds — electric heating and cooling when conditions are mild, and gas heat when it’s more efficient. It’s a smart, energy-saving setup that automatically switches between electric and gas heat to keep your home comfortable and your energy bills low.

What makes the MRCOOL Dual Fuel System different from other systems?

The MRCOOL Dual Fuel System features a factory pre-charged “A” coil that comes ready to install with no refrigerant handling required. This means you can connect it using our DIY pre-charged line sets for a completely DIY refrigerant installation—no vacuum pump, gauges, or professional charging required. That alone can save you thousands of dollars in installation costs.

What outdoor units can I pair with the MRCOOL pre-charged “A” coil?

The pre-charged “A” coil is compatible with:

  • MRCOOL VersaPro (standard heat pump with heating and cooling)
  • MRCOOL Hyper Heat Series (heats without a heat strip, even in temperatures as low as -22°F)
  • MRCOOL Universal Series (high-performance, flexible installation options)

All of these can be matched with a gas furnace to create a full dual-fuel system.

What does “pre-charged” mean?

“Pre-charged” means the coil and optional line sets come filled with the correct amount of R-454B refrigerant from the factory.

The refrigerant is sealed inside quick-connect fittings, so when you attach the pre-charged line sets, the system automatically opens and seals without any risk of leaks or contamination. No HVAC license or tools required!

Can I install the system myself?

If you’re using DIY pre-charged line sets, the refrigerant portion is completely DIY. However, if you’re integrating the system with an existing gas furnace, you may want a professional to confirm proper electrical and gas connections for safety and code compliance. Many homeowners complete the bulk of the install themselves and bring in a pro only for final checks.

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

Absolutely. The pre-charged “A” coil is versatile — it can be installed with traditional copper line sets (by a professional) or with MRCOOL’s DIY pre-charged line sets for a no-hassle setup.

How much money can I save by installing it myself?

By using MRCOOL’s pre-charged components and line sets, you can save hundreds to thousands of dollars compared to hiring an HVAC technician for a traditional installation. You get professional performance at a DIY price.