Midea M-Thermon HT 12 kW Monobloc Air Source Heat Pump R290

The Midea M-Thermon HT 12 kW is a high-temperature monobloc air source heat pump designed to comprehensively meet the heating, cooling, and domestic hot water (DHW) needs of larger homes or properties with higher thermal demands. This unit stands out for its use of natural refrigerant R290, which significantly reduces environmental impact, and its ability to reach up to 75°C supply temperature, making it easy to integrate into existing installations or systems requiring high temperatures.

Its monobloc design integrates the main hydraulic components into a single outdoor unit, simplifying installation and reducing system complexity. This makes it an especially attractive solution for residential projects seeking energy efficiency, easy installation, and high performance year-round.

Main Features

• Heating capacity: up to 12 kW at A+7°C / W+35°C.
• COP: up to 4.8 under standard conditions.
• Maximum supply temperature: up to 75°C in heating mode.
• DHW production: up to 70°C.
• R290 refrigerant: low environmental impact (GWP 3).
• Operation in extreme cold: down to -25°C outdoor temperature.
• Monobloc system: simplified installation with integrated hydraulics.
• Energy rating: A+++ / A++ in heating.

Performance and Efficiency

The M-Thermon HT 12 kW delivers solid performance under various working conditions. In heating mode at A+7°C / W+35°C, it provides 12 kW with a COP of 4.8 and a power consumption of 2,500 W. When higher water temperatures are required, at A+7°C / W+55°C it maintains 12 kW with a COP of 3.1.

In demanding winter conditions, at A-7°C / W+35°C it delivers 10 kW with a COP of 2.8, and at A-7°C / W+55°C it reaches 10.4 kW with a COP of 2.15, ensuring stable output even at very low outdoor temperatures.

In cooling mode, the unit provides 12 kW with an EER of 4.5 at A+35°C / W+18°C, and 11.5 kW with an EER of 3.05 at A+35°C / W+7°C, offering a complete solution for year-round climate control.

Seasonal Efficiency

Seasonal efficiency is a key highlight of this model, with excellent values across different climates:

• Average climate: SCOP 4.64 (35°C) / 3.62 (55°C).
• Warm climate: SCOP 5.90 (35°C) / 4.45 (55°C).
• Cold climate: SCOP 4.13 (35°C) / 3.26 (55°C).
• SEER: 5.18 (W+7°C) / 6.75 (W+18°C).

These values ensure efficient operation throughout the year, optimizing energy consumption based on actual usage conditions.

High Temperature and Adaptation to Existing Installations

The ability to reach up to 75°C makes this heat pump especially suitable for home renovations and replacing traditional systems such as boilers. This facilitates integration with existing radiators or systems that require high water temperatures, without the need for major modifications.

Additionally, it can produce DHW even in extreme conditions, reaching up to 55°C hot water at -25°C outdoor temperature, ensuring comfort in cold climates.

Operating Range

• DHW: -25°C to 46°C outdoor temperature.
• Heating: -25°C to 35°C outdoor temperature.
• Cooling: -5°C to 46°C outdoor temperature.

This wide operating range guarantees reliable performance in any season.

Integrated Hydraulic Equipment

• Electric backup heater: 3,000 W.
• Pump pressure: 9 m H₂O.
• Expansion vessel: 8 liters.
• Minimum water volume: 60 liters.
• Nominal flow rate: 2.10 m³/h.
• Hydraulic connections: 1 1/4”.

This equipment allows for direct integration into the hydraulic system, reducing installation costs and time.

Electrical and Acoustic Data

• Power supply: 220-240 V / 1 / 50 Hz.
• Maximum current: 25 A.
• Recommended circuit breaker: D20.
• Sound pressure: 52 dB(A).
• Sound power: 65 dB(A).

R290 Refrigerant: Efficiency and Sustainability

The use of R290 (propane) significantly reduces the system’s environmental impact thanks to its GWP 3. It also improves high-temperature performance, making it ideal for applications where other refrigerants cannot achieve these results.

This model uses 1.25 kg of refrigerant, with a virtually zero CO₂ equivalent.

Dimensions and Weight

• Outdoor unit model: MHC-V12W/D2N7-E30.
• Reference: 14072222.
• Dimensions (W x H x D): 1,385 x 865 x 526 mm.
• Net weight: 135 kg.

Recommended Applications

• Medium or large single-family homes.
• Energy retrofits replacing boilers.
• Systems with radiators or medium/high-temperature emitters.
• Installations requiring high-performance DHW.

Indicative Home Surface Area

For a power output of 12 kW, the indicative surface area is:

• 30–40 W/m²: between 300 and 400 m² (high insulation).
• 50–60 W/m²: between 200 and 240 m² (medium insulation).
• 80–100 W/m²: between 120 and 150 m² (low insulation).

These values are indicative and should be validated by thermal load calculations.

Technical Specifications

• Heating capacity A+7°C / W+35°C: 12 kW.
• COP A+7°C / W+35°C: 4.8.
• Power consumption: 2,500 W.
• Heating capacity A+7°C / W+55°C: 12 kW.
• COP: 3.1.
• Heating capacity A-7°C / W+35°C: 10 kW.
• COP: 2.8.
• Heating capacity A-7°C / W+55°C: 10.4 kW.
• COP: 2.15.
• Cooling capacity: up to 12 kW.
• EER: up to 4.5.
• SCOP: up to 5.90.
• SEER: up to 6.75.
• Refrigerant: R290.
• DHW temperature: 10–70°C.
• Heating temperature: 12–75°C.
• Cooling temperature: 5–30°C.