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

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.