Energy Meters for Heating & Cooling

Choose the right energy meter for heating and cooling

A heat meter for heating and cooling (often called a heat meter or combined heat/cooling meter) is a key component in modern HVAC systems. The meter registers both the flow of circulating fluid and the temperature difference between supply and return. Based on these parameters, the actual energy output emitted or absorbed is calculated with high precision.

Choosing the right meter and accessories is about matching it to the property's technical conditions and how the measurement data is to be collected.

Benefits of energy meters for heating and cooling

Accurate consumption measurement: Provides accurate data for individual metering and billing (IMD) in homes and premises.

Energy saving and control: Helps identify power peaks, incorrect temperature differences and energy leakage in heating and cooling systems.

Flexible integration: Enables remote reading via wired or wireless interfaces such as Modbus, M-Bus and radio.

Long-term reliability: Manufactured with stable measurement technology (such as ultrasound) that reduces wear and maintenance requirements over time.

Areas of application

Energy meters for heating and cooling are designed to be installed in water-borne systems. They are very common in:

• District heating and district cooling systems.
• Properties with geothermal or air/water heat pumps.
• Commercial properties with combined heating and cooling batteries.
• Multi-apartment buildings where consumption is to be distributed per apartment.

Important factors to consider before purchasing

• Measuring range and flow capacity: Ensure that the meter's nominal flow (qp) matches the pipe system dimension and expected flow rates.
• Cooling or heating mode: Some units measure only heat, while combi meters handle both heating and cooling registers in the same unit.
• Communication modules: Depending on whether reading is to be done manually or automatically, the right plug-in cards are needed, such as Modbus modules for building automation or radio modules for wireless M-Bus.
• Power supply: Meters and modules can be powered via an internal lithium battery or via an external power supply unit (230V AC or low voltage) for continuous operation during frequent data communication.

Accessories that complement the system

To build a complete meter circuit, the meter itself is often not enough. In our range you will find compatible plug-in modules and power supplies. Modbus and radio modules enable seamless digital transmission of measured values directly to your building system. An external power supply unit ensures stable power supply when the communication modules require more energy than the meter's built-in battery can deliver over time.