Midea ALL-ONE-8A1/240B2 8 kW air-to-water heat pump with 240 l hot water tank

The Midea M-Thermal PRO R32 All in One ALL-ONE-8A1/240B2 pairs the 8 kW outdoor unit MHA-V8W/D2N8-B2 with a 240 l hot water tank: heating output at A7W35 is 8.30 kW (COP 5.20). It suits homes that need more hot water (several draw-off points) while the heat loss calculation needs about 8 kW for heating; the indoor unit is 600 × 1943 × 600 mm, 157 kg net, with a sound power level of 59 / 40 dB(A). The kit includes a 3 kW integrated electric heater, energy class A+++ (35 °C) / A++ (55 °C), 220–240 V, single phase.

Technical specifications

Download the manufacturer datasheet (PDF)

How the ALL-ONE-8A1/240B2 differs from the ALL-ONE-8A1/190B2 and ALL-ONE-10A1/240B2

Choose the ALL-ONE-8A1/240B2 if hot water is drawn at several points and the heat loss calculation is covered by 8.30 kW. If hot water use is moderate, take the ALL-ONE-8A1/190B2: the same outdoor unit, a 190 l tank and a lower (1683 mm) indoor unit. If you need 10.00 kW for heating, look at the ALL-ONE-10A1/240B2: the same 240 l tank and an indoor unit of the same size, but a 10 kW outdoor unit (60 / 42 dB(A)).

Heat pump with built-in hot water tank: who is the Midea ALL-ONE-8A1/240B2 for?

The Midea ALL-ONE-8A1/240B2 is an all-in-one solution: the outdoor unit and the indoor hydronic module with a 240 l tank form a single set, and the compact indoor unit (600 × 1943 × 600 mm) suits places where space is tight. A 240 l tank is intended for higher or simultaneous hot water use, when water is drawn at several points.

• Space heating: 8.30 kW at A7W35, 7.50 kW at A7W55
• Summer cooling: 7.40 kW at A35W7
• Domestic hot water: 240 l tank, hot water temperature 30…60 °C

Air-to-water heat pump for radiators: what does SCOP tell you?

The seasonal efficiency SCOP is 5.22 at 35 °C leaving water and 3.36 at 55 °C. The first figure fits underfloor heating or low-temperature radiators, the second higher-temperature systems. The manufacturer states annual electricity consumption of 3,218 kWh (35 °C) and 4,056 kWh (55 °C).

How do I choose heat pump output and tank size?

Choose the output by the heat loss of the house, not by floor area alone. The outdoor unit MHA-V8W/D2N8-B2 is supplied with both the 190 l and the 240 l tank, so the tank can be chosen without changing the heating output; choosing a different output (10 or 8 kW) means a different outdoor unit, and the comparison is given above.

Heat pump installation: why you need a certified specialist

This heat pump uses R32 (1.65 kg), a fluorinated greenhouse gas. EU Regulation 2024/573 on fluorinated gases states, in essence, that people working with such equipment must be certified:

“Natural persons carrying out the activities referred to in points (a), (b) and (c) of the first subparagraph of Article 10(1) shall be certified in accordance with Article 10.”

Regulation (EU) 2024/573 on fluorinated greenhouse gases

The outdoor and indoor units can be placed up to 30 m apart in refrigerant pipe length and up to 20 m apart in height; up to 15 m no extra refrigerant is needed. Water connections: heating 1″, hot water 3/4″.

We handle it for you. We select the equipment for your site, deliver anywhere in Lithuania, install and connect it.

What to know before buying

• Noise: sound power level 59 dB(A) outdoors, 40 dB(A) indoors.
• Weight: the indoor unit weighs 157 kg net; with packaging it measures 730 × 2180 × 730 mm.
• Control: mobile app and Modbus RTU.
• Operating limits: heating at −25…35 °C, cooling at −5…43 °C outdoor temperature.
• Water flow rate: 0.7–3.0 m³/h.

Frequently asked questions

What is the heating capacity and COP of the Midea ALL-ONE-8A1/240B2?

At A7W35 the Midea ALL-ONE-8A1/240B2 delivers 8.30 kW of heating with COP 5.20. At A7W45 it gives 8.20 kW (COP 3.95) and at A7W55 7.50 kW (COP 3.18).

Is a 240 l hot water tank enough?

The 240 l SUS 316L stainless steel tank with 45 mm insulation suits higher or simultaneous hot water use, when water is drawn at several points. If your needs are different, the same outdoor unit MHA-V8W/D2N8-B2 is also supplied with a 190 l tank. Hybrid Energy helps you pick the right option for your household.

Is this air-to-water heat pump suitable for radiator heating?

Yes, the leaving water temperature for heating is 25…65 °C. SCOP is 5.22 at 35 °C and 3.36 at 55 °C, so efficiency is higher with low-temperature radiators or underfloor heating and the benefit is smaller in older houses with high-temperature radiators.

Can the Midea ALL-ONE-8A1/240B2 cool as well?

Yes, it is a reversible heat pump: cooling capacity is 7.40 kW at A35W7 (EER 3.38) and 8.40 kW at A35W18 (EER 5.05). Cooling works at outdoor temperatures of −5…43 °C.

Down to what outdoor temperature do heating and hot water work?

Heating works at outdoor temperatures of −25…35 °C and hot water preparation at −25…43 °C. The hot water temperature is adjustable within 30…60 °C.

How loud is the Midea ALL-ONE-8A1/240B2?

The sound power level is 59 dB(A) for the outdoor unit and 40 dB(A) for the indoor unit.

Can I install the heat pump myself?

No. The Midea ALL-ONE-8A1/240B2 uses R32 refrigerant (1.65 kg), so only certified specialists may work on it. Hybrid Energy delivers anywhere in Lithuania, installs and connects it.

What is the maximum refrigerant pipe length between the units?

The maximum refrigerant pipe length is 30 m and the height difference between the units up to 20 m. Up to 15 m no extra refrigerant is needed; beyond that 0.038 kg/m is added.

Does the Midea ALL-ONE-8A1/240B2 have a built-in electric heater?

Yes, the indoor unit has a 3 kW built-in electric heater (1 stage). The unit is controlled through a mobile app and also supports Modbus RTU.

How much space do the indoor and outdoor units take?

The indoor unit measures 600 × 1943 × 600 mm (net weight 157 kg) and the outdoor unit 1118 × 865 × 523 mm. The indoor unit with packaging is 730 × 2180 × 730 mm.

Sources

• Midea M-Thermal PRO All in One manufacturer datasheet (PDF), checked 2026-10-26
• Regulation (EU) 2024/573 on fluorinated greenhouse gases