MIDEA28 Wall-Mounted Heat Pump | 12,000 BTU | R-454B (-30°C)

In stock
SKU: MO1HS-H12B-2A
Provincial Grant (LogisVert): 1176 $ (Updated: May 1, 2025)
Model Number (Interior): MSEHU-H12B-2A
Model Number (External): MO1HS-H12B-2A
AHRI: 215471381
ENERGY STAR®: Yes
ENERGY STAR® (Cold Climate): Yes / Yes
Heating Capacity: -30 °C
Cooling Capacity: 12,000 BTU
Gas (Freon): R-454B
SEER2: 25.4
HSPF2: 10.5
EER2: 13.4
Interior Dimensions (W x D x H): 33.38 x 9.13 x 11.75
External Dimensions (W x D x H): 31.75 x 13 x 21.75

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  • WiFi: Optional
  • Warranty (Compressor - Parts - Labor): 12-12-10
  • Additional Warranty: Included
  • Piping: 1/4 - 3/8
  • Voltage: 220 V
  • Sound Pressure Level (Outdoor): 56.0 dB(A)
  • Sound Pressure Level (Indoor): 20 / 47 dB(A)

An efficient, quiet wall-mounted solution adapted to Quebec winters

At AirGreen , we've seen a lot of wall-mounted heat pumps over the years, but some stand out for their versatility, energy performance, and ability to withstand the harshness of our climate. This is precisely the case with the MIDEA28 | 12,000 BTU | R-454B (-30°C) Wall-Mounted Heat Pump . Designed to provide year-round comfort , this wall-mounted unit impresses with its advanced technical features, simple installation, and reliable operation, even in very cold weather.

This page presents this heat pump in detail, based on both our field expertise and official technical data. You will discover how this unit fits perfectly into homes in Montreal , Laval , Longueuil , as well as on the North Shore and the South Shore , and why it represents a winning solution for homeowners wishing to combine performance , energy savings and peace of mind .


A wall-mounted heat pump designed for the Quebec climate

Efficient heating down to -30°C

One of the most important criteria when choosing a wall-mounted heat pump in Quebec is its ability to heat in times of extreme cold . Thanks to its high-performance compressor, the MIDEA28 is designed to maintain comfortable heat even when the mercury plunges to -30°C . This feature makes it a solution perfectly suited to the harsh winters of our region.

Remarkable energy efficiency

The MIDEA28 heat pump boasts impressive efficiency ratings:

  • SEER2: 25.4

  • HSPF2: 10.5

  • EER2: 13.4

This data demonstrates its excellent energy efficiency , whether in air conditioning or heating mode. This translates into lower electricity bills and more environmentally friendly operation.


Technical characteristics: power and discretion

Quiet and compact

With an indoor noise level ranging from 20 to 47 dB(A) , this unit is almost invisible. Whether in a bedroom, living room or office, its quiet operation guarantees uncompromising comfort. Outdoors, the noise level peaks at 56 dB(A) , which remains in the low average for this type of equipment.

Smart design and control options

The MIDEA28 offers several user-friendly features that make it pleasant to use on a daily basis:

  • Horizontal and vertical shutter control , with fixed or oscillation modes

  • Smart occupancy sensor and relative humidity sensor

  • Eco, Turbo, Silent, Sleep modes

  • Optional Wi-Fi , for remote control

  • “Follow Me” mode , which adjusts the temperature according to the position of the remote control

  • Self-cleaning function , extending the life of the appliance


Professional AirGreen installation: turnkey and hassle-free

Dimensions and flexibility

The compactness of the units facilitates discreet wall installation :

  • Indoor unit: 33.38 x 9.13 x 11.75 in

  • Outdoor Unit: 31.75 x 13 x 21.75 in

  • Compatible piping: 1/4 - 3/8 inch

  • Voltage: 220V

At AirGreen , we tailor each installation to the available space and the building's specific features. Our RBQ -certified installers deliver fast, clean, and guaranteed work.

Our customer promise

  • No deposit required – you only pay when you are satisfied

  • Final submission before work , to avoid any surprises

  • Experienced and specialized technicians in residential HVAC and commercial HVAC

  • Reliable and fast after-sales service


Testimonials and concrete cases: the MIDEA28 installed by AirGreen

Example in Longueuil

A Longueuil client, owner of a duplex, was looking for a compact and energy-efficient solution for the ground floor. After a free on-site evaluation, we recommended the MIDEA28 . The result: optimal comfort in both summer and winter, and a reduction of more than 30% on his annual electricity bill .

Project on the North Shore

In Blainville, a young couple called on us to modernize their electric heating system. Thanks to the MIDEA28 wall-mounted heat pump , they now benefit from rapid air conditioning in the summer and reliable heating even during the freezing cold. The installation was completed in one day, without any damage.


Why choose AirGreen for your MIDEA28 heat pump?

We're not just HVAC equipment sellers. We're trusted partners for your residential or commercial comfort. Our team is with you every step of the way:

  • Free home assessment

  • Personalized recommendations

  • Help with available grants , including Hydro-Québec's LogisVert program

  • Extended warranty included (12 years compressor / 12 years parts / 10 years labor)

Our in-depth knowledge of the field and our experience in several hundred wall-mounted heat pump installations make all the difference.


Additional details and integrated innovations

R-454B refrigerant: efficient and ecological

The refrigerant gas used in MIDEA28 , R-454B , is a new generation gas with low global warming potential (GWP) . This makes it a more environmentally friendly choice compared to older refrigerants like R-410A.

Safety and sustainability

  • Integrated A2L refrigerant detection system

  • Integrated multifunction pad

  • Outdoor heating cables to prevent freezing

  • High quality TU1 copper , corrosion resistant


An affordable heat pump eligible for subsidies

Although its price is still pending confirmation, the MIDEA28 will be eligible for certain government subsidies for energy efficiency. At AirGreen , we support you in all the steps:

  • Preparing your grant application

  • Advice on eligibility

  • Transmission of documents to the competent authorities


Conclusion: a complete, reliable unit designed for Quebec

The MIDEA28 Wall-Mounted Heat Pump | 12,000 BTU | R-454B (-30°C) ticks all the boxes: performance , silence , connectivity , energy efficiency , and adaptation to Quebec's harsh climate . It is aimed at homeowners concerned about their comfort, energy consumption and long-term reliability.


Contact AirGreen now to get your free quote, discuss installation, or ask questions about this product. We will help you choose the best solution for your home or business, whether you are in Montreal , Laval , Longueuil , on the North Shore , or the South Shore .

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