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MRCOOL 5th Gen Advantage 12K BTU Wall Mount Air Handler 115V

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Smart Comfort: MRCOOL 5th Gen Advantage 12k BTU Wall Mount Air Handler (115V)

Upgrade your indoor climate control with the MRCOOL 12k BTU Wall Mount Air Handler, the sleek and efficient indoor component of the Advantage 5th Gen series. Designed to condition spaces up to 500 square feet, this unit operates on standard 115V power, making it a perfect fit for bedrooms, home offices, and living areas where high-voltage wiring isn't available.

This 5th Generation model is engineered for use with the new eco-friendly R-454B refrigerant (supplied by your installer). It combines whisper-quiet operation with advanced smart technology, allowing you to control your environment from anywhere via the SmartHVAC app or voice commands. Whether you are replacing an existing unit or building a multi-room setup, this air handler delivers premium comfort and efficiency.

MRCOOL 5th Gen Advantage 12K BTU Wall Mount Air Handler 115V

⚠️ Important Installation Notice

This listing is for the Indoor Air Handler Only. It must be paired with a compatible 115V outdoor condenser and installed by a licensed HVAC professional. The unit does not come pre-charged.




Key Features and Benefits

Placeholder ImageMRCOOL Advantage Series Features
  • Optimized for 115V Systems: Designed specifically for 115V applications, ensuring seamless compatibility with standard household voltage circuits.
  • High-Efficiency Performance: Capable of achieving up to 21.2 SEER2 when paired with the matching condenser, helping to lower your monthly energy bills.
  • Smart Home Integration: Comes equipped with the SmartHVAC WiFi Module, giving you full control via your smartphone (iOS/Android) and compatibility with Amazon Alexa and Google Assistant.
  • Eco-Friendly Design: Built to work with low-GWP R-454B refrigerant, meeting the latest environmental standards for a greener home.
  • Advanced Comfort Control: Features intelligent modes like Sleep Mode to adjust temperature overnight, Louver Position Memory to save your airflow preferences, and Auto Restart to resume settings after a power outage.
  • Whisper-Quiet Operation: The indoor fan is engineered for minimal noise, ensuring your comfort doesn't come with a distraction.

Smart Control from Anywhere

Control your MRCOOL® Advantage ductless mini split remotely using your smartphone or voice commands. The system is fully compatible with Amazon Alexa and Google Assistant, allowing temperature adjustments, mode changes, and scheduling through the SmartHVAC app or supported voice devices.

Smart Control from Anywhere - 5th Gen advantage series

Install Almost Anywhere

Ductless mini split systems offer flexible installation without ductwork or structural disruption.

  • Wall-mounted indoor unit preserves windows and floor space
  • Ideal for spaces without existing ducts
  • Suitable for garages, sunrooms, additions, offices, and remodeled rooms

The Advantage Series brings efficient heating and cooling to spaces traditional HVAC systems can’t easily reach.

MRCOOL Advantage Series - Installation Convenience

Specifications

  • Brand Name: MRCOOL
  • Series: Advantage 5th Gen
  • Model: A-12-HP-WMAH-115D-O
  • Unit Type: Mini-Split Air Handler (Indoor Unit)
  • Cooling/Heating Capacity: 12,000 BTU
  • Voltage: 115V
  • Phase: 1
  • Cycle: 60 Hz
  • Refrigerant Compatibility: R-454B (Must be charged on-site)
  • Mount Type: Wall Mount
  • Color: White
  • SEER2 Potential: Up to 21.2 (System dependent)
  • Controller: Remote Control & Wi-Fi Module Included
  • App Compatibility: Yes (iOS & Android)
  • Warranty: 1-Year Parts / 1-Year Remote (Requires Professional Installation)
MRCOOL 5th Gen Advantage 12K BTU Wall Mount Air Handler 115V - Vent opened

Why You Should Get This Air Handler

  • Perfect Replacement: If your existing 115V Advantage indoor unit is damaged but the outdoor unit is fine, this is the exact factory replacement you need.
  • Modern Esthetics: The clean, white, compact wall-mounted design blends effortlessly into modern interiors without occupying floor space.
  • Convenience: The included remote and app capabilities mean you never have to get up to adjust the thermostat.
  • Warranty Protection: Backed by a 1-Year Parts Warranty when installed by a licensed professional, ensuring peace of mind.

Frequently Asked Questions

Can I use this air handler with my old R-410A condenser?

No. This 5th Gen model is designed for R-454B refrigerant. Mixing it with an older R-410A condenser is not recommended and may lead to system failure and warranty voidance.

Does this unit plug into a wall outlet?

No. While it is a 115V unit, mini-split air handlers are typically hardwired and receive their power and communication signals directly from the outdoor condenser unit.

Is this a DIY product?

No. Unlike the MRCOOL DIY series, the Advantage line requires a licensed HVAC professional to install the unit, connect the lines, and charge the system.

Does this come with the remote?

Yes, the unit comes with a handheld remote control. You can also control it using the SmartHVAC app on your phone.

Best Price Guarantee

You'll get the best price available at Wild Oak Trail! We'll match anyone who has it lower! 

We love to chat! Give us a call and we'll see what we can do to get you the best deal!

Conditions of our 100% Price Match Guarantee:

  • Contact us to discuss the Price Match so we can look up the competitors price

  • Buy one, get one free offers and Rebates are not eligible

  • The item must be in stock on the competitors website

  • The competitor must be an online store, not a retail location

  • The website can't be a discounter or auction website ( such as eBay, overstock, etc.)

  • The company must be an Authorized Retailer of the product in question

  • The Price Match Guarantee is based on the final price of the product including shipping and taxes

Why Buy From Wild Oak Trail? 

We’re a family-run business. My Wife Hailey and I run this business with our small staff of 3 awesome people. When you shop with Wild Oak Trail, you're supporting real people, not a big corporation.

We truly care. We’re here before, during, and after your purchase. Good products and great service—that’s how we earn your trust. We see and celebrate EVERY sale that comes in!

We choose quality. If we wouldn’t use it ourselves, we won’t offer it. Our goal is to make you happy enough to tell your friends.

Thanks for supporting our family and being part of the Wild Oak Trail community!

Description

Smart Comfort: MRCOOL 5th Gen Advantage 12k BTU Wall Mount Air Handler (115V)

Upgrade your indoor climate control with the MRCOOL 12k BTU Wall Mount Air Handler, the sleek and efficient indoor component of the Advantage 5th Gen series. Designed to condition spaces up to 500 square feet, this unit operates on standard 115V power, making it a perfect fit for bedrooms, home offices, and living areas where high-voltage wiring isn't available.

This 5th Generation model is engineered for use with the new eco-friendly R-454B refrigerant (supplied by your installer). It combines whisper-quiet operation with advanced smart technology, allowing you to control your environment from anywhere via the SmartHVAC app or voice commands. Whether you are replacing an existing unit or building a multi-room setup, this air handler delivers premium comfort and efficiency.

MRCOOL 5th Gen Advantage 12K BTU Wall Mount Air Handler 115V

⚠️ Important Installation Notice

This listing is for the Indoor Air Handler Only. It must be paired with a compatible 115V outdoor condenser and installed by a licensed HVAC professional. The unit does not come pre-charged.




Key Features and Benefits

Placeholder ImageMRCOOL Advantage Series Features
  • Optimized for 115V Systems: Designed specifically for 115V applications, ensuring seamless compatibility with standard household voltage circuits.
  • High-Efficiency Performance: Capable of achieving up to 21.2 SEER2 when paired with the matching condenser, helping to lower your monthly energy bills.
  • Smart Home Integration: Comes equipped with the SmartHVAC WiFi Module, giving you full control via your smartphone (iOS/Android) and compatibility with Amazon Alexa and Google Assistant.
  • Eco-Friendly Design: Built to work with low-GWP R-454B refrigerant, meeting the latest environmental standards for a greener home.
  • Advanced Comfort Control: Features intelligent modes like Sleep Mode to adjust temperature overnight, Louver Position Memory to save your airflow preferences, and Auto Restart to resume settings after a power outage.
  • Whisper-Quiet Operation: The indoor fan is engineered for minimal noise, ensuring your comfort doesn't come with a distraction.

Smart Control from Anywhere

Control your MRCOOL® Advantage ductless mini split remotely using your smartphone or voice commands. The system is fully compatible with Amazon Alexa and Google Assistant, allowing temperature adjustments, mode changes, and scheduling through the SmartHVAC app or supported voice devices.

Smart Control from Anywhere - 5th Gen advantage series

Install Almost Anywhere

Ductless mini split systems offer flexible installation without ductwork or structural disruption.

  • Wall-mounted indoor unit preserves windows and floor space
  • Ideal for spaces without existing ducts
  • Suitable for garages, sunrooms, additions, offices, and remodeled rooms

The Advantage Series brings efficient heating and cooling to spaces traditional HVAC systems can’t easily reach.

MRCOOL Advantage Series - Installation Convenience

Specifications

  • Brand Name: MRCOOL
  • Series: Advantage 5th Gen
  • Model: A-12-HP-WMAH-115D-O
  • Unit Type: Mini-Split Air Handler (Indoor Unit)
  • Cooling/Heating Capacity: 12,000 BTU
  • Voltage: 115V
  • Phase: 1
  • Cycle: 60 Hz
  • Refrigerant Compatibility: R-454B (Must be charged on-site)
  • Mount Type: Wall Mount
  • Color: White
  • SEER2 Potential: Up to 21.2 (System dependent)
  • Controller: Remote Control & Wi-Fi Module Included
  • App Compatibility: Yes (iOS & Android)
  • Warranty: 1-Year Parts / 1-Year Remote (Requires Professional Installation)
MRCOOL 5th Gen Advantage 12K BTU Wall Mount Air Handler 115V - Vent opened

Why You Should Get This Air Handler

  • Perfect Replacement: If your existing 115V Advantage indoor unit is damaged but the outdoor unit is fine, this is the exact factory replacement you need.
  • Modern Esthetics: The clean, white, compact wall-mounted design blends effortlessly into modern interiors without occupying floor space.
  • Convenience: The included remote and app capabilities mean you never have to get up to adjust the thermostat.
  • Warranty Protection: Backed by a 1-Year Parts Warranty when installed by a licensed professional, ensuring peace of mind.

Frequently Asked Questions

Can I use this air handler with my old R-410A condenser?

No. This 5th Gen model is designed for R-454B refrigerant. Mixing it with an older R-410A condenser is not recommended and may lead to system failure and warranty voidance.

Does this unit plug into a wall outlet?

No. While it is a 115V unit, mini-split air handlers are typically hardwired and receive their power and communication signals directly from the outdoor condenser unit.

Is this a DIY product?

No. Unlike the MRCOOL DIY series, the Advantage line requires a licensed HVAC professional to install the unit, connect the lines, and charge the system.

Does this come with the remote?

Yes, the unit comes with a handheld remote control. You can also control it using the SmartHVAC app on your phone.

Best Price Guarantee!

Best Price Guarantee

You'll get the best price available at Wild Oak Trail! We'll match anyone who has it lower! 

We love to chat! Give us a call and we'll see what we can do to get you the best deal!

Conditions of our 100% Price Match Guarantee:

  • Contact us to discuss the Price Match so we can look up the competitors price

  • Buy one, get one free offers and Rebates are not eligible

  • The item must be in stock on the competitors website

  • The competitor must be an online store, not a retail location

  • The website can't be a discounter or auction website ( such as eBay, overstock, etc.)

  • The company must be an Authorized Retailer of the product in question

  • The Price Match Guarantee is based on the final price of the product including shipping and taxes

Why Buy From Us

Why Buy From Wild Oak Trail? 

We’re a family-run business. My Wife Hailey and I run this business with our small staff of 3 awesome people. When you shop with Wild Oak Trail, you're supporting real people, not a big corporation.

We truly care. We’re here before, during, and after your purchase. Good products and great service—that’s how we earn your trust. We see and celebrate EVERY sale that comes in!

We choose quality. If we wouldn’t use it ourselves, we won’t offer it. Our goal is to make you happy enough to tell your friends.

Thanks for supporting our family and being part of the Wild Oak Trail community!