New monobloc heat pumps on StorePST: faster to integrate, more straightforward to install

When it comes to heat pumps, the question is no longer just "does it use little energy?". In the residential sector, today integration with existing systems, compatibility with the available power supply (230V/400V) and ease of installation matter a great deal as well.

That is why StorePST now offers an updated selection of monobloc heat pumps with three of the most requested lines for residential systems, suited to different contexts: new builds, renovations and work on existing systems (always with correct sizing and design).

In this guide:

• what a monobloc is (in simple terms);
• which lines are currently available on StorePST;
• which aspects to really consider when choosing the size;
• what changes (in practice) in installation and integration.

1) Monobloc: what it means (explained simply)

A monobloc heat pump is a system in which the refrigeration circuit is integrated in the outdoor unit. Only hydraulic connections (the system's process water) reach the inside of the home, not refrigerant lines.

Why it is often chosen:

• installation can be more straightforward on the system side (depending on the design);
• integration with components such as the DHW cylinder, buffer tank and zones can be more direct on the hydraulic side, if properly designed.

Important note: every system is different; "simpler" does not mean "always the same", but that in many cases a monobloc can make the work more direct and orderly.

2) The new lines available on StorePST

2.1 Vaillant aroTHERM PLUS 8.1 — a wide range to cover more residential cases

The aroTHERM PLUS 8.1 line is designed to cover a wide variety of residential needs, with more sizes and power supply options available in the selection.

Sizes/power supplies available in the StorePST selection:

• 4 kW – 230V
• 6 kW – 230V
• 8 kW – 230V
• 12 kW – 230V
• 12 kW – 400V

Why it can be a practical choice:

• wide availability of sizes, useful for "hitting" the right sizing;
• the possibility of standardizing the offer on a single line, varying size and power supply;
• 230V/400V flexibility (where provided by the models in the selection).

2.2 Vaillant aroTHERM PRO — "core" sizes and 230V/400V options

aroTHERM PRO is a line designed to cover the most common sizes in residential projects well, with models available in 230V and 400V in the selection.

Sizes/power supplies available in the StorePST selection:

• 5 kW – 230V
• 8 kW – 230V
• 12 kW – 230V
• 12 kW – 400V
• 15 kW – 400V

Why it can be a practical choice:

• effective coverage in the 5–15 kW range, typical of many residential projects;
• power supply options that help adapt to electrical availability and project requirements;
• a solid basis for integration with accessories and climate control, depending on the system layout.

2.3 Immergas MAGIS M T — TOP configurations with interface and control unit

In the StorePST selection, MAGIS M T is offered in TOP versions with interface and control unit indicated in the product titles: an appealing setup for those who want a supply already geared toward system management and integration.

Models in the MAGIS M T line (dedicated selection):

• MAGIS M5 T TOP + interface and control unit
• MAGIS M8 T TOP + interface and control unit
• MAGIS M12 T TOP + interface and control unit
• MAGIS M16 T TOP + interface and control unit

Why it can be a practical choice:

• an interface and control unit already included in the configuration;
• clear sizes to cover many residential cases;
• a setup suited to contexts where it is important to take care of management/control right from the product choice.

3) The features that really matter (and why)

3.1 Sizing: the factor that really makes the difference

More than the "model name", what counts is:

• the building's actual heat losses (insulation, windows and doors, area/climate);
• terminals (underfloor heating, radiators, fan coils);
• usage profile and DHW strategy (cylinder and volumes, number of bathrooms/people);
• control and operating logic.

Correct sizing improves comfort, stability and consumption, and reduces unnecessary on/off cycles.

3.2 230V/400V power supply: a constraint (and an opportunity)

In renovations, the available power supply can influence the choice of model. Having 230V and 400V options in the same line (or in the same selection) makes it easier to find a solution consistent with the existing switchboard or with the design choices of the project.

3.3 System integration: layout + components + control

The final performance depends on the whole:

• a consistent hydraulic layout (any buffer tank/cylinder/zones);
• the right accessories and tidy installation;
• control set up appropriately for the system.

4) Installation: what changes in practical terms

On many job sites, a monobloc lets you focus on:

• correct hydraulic connections (sizing, insulation, required protections);
• electrical connections consistent with the model and power supply;
• commissioning and adjustment according to the manufacturer's instructions and the system design.

5) How to choose quickly: mini-checklist

Before selecting a line or a model, it helps to clarify:

1. New build or renovation?
2. Terminals: underfloor heating / radiators / fan coils?
3. DHW: number of people and number of bathrooms?
4. Available power supply: 230V or 400V?

Conclusion

The new monobloc heat pump lines on StorePST are designed to simplify what really matters in the residential sector: integration with real-world systems, a consistent choice between sizes and power supplies, and the possibility of building scalable solutions with suitable accessories and controls.

Discover the available lines:

• Vaillant aroTHERM PRO: https://storepst.com/it/70-pompe-di-calore/s-1/linea-arotherm_pro
• Vaillant aroTHERM PLUS 8.1: https://storepst.com/it/70-pompe-di-calore/s-1/linea-arotherm_plus_81
• Immergas MAGIS M T: https://storepst.com/it/70-pompe-di-calore/s-1/linea-magis_m_t