Understanding a heat pump product label is crucial for homeowners, installers, and energy consultants who want to make informed decisions. With growing emphasis on energy efficiency and sustainability, manufacturers now include a wealth of technical data on these labels. But how do you interpret it?

In this guide, we break down how to read and understand a heat pump label—especially for air-to-water heat pumps—so you can confidently evaluate performance, efficiency, and compliance.

What Is a Heat Pump Product Label?

A heat pump product label—typically attached to the unit or included in product documentation—is a standardized information sheet that outlines technical specifications, performance ratings, energy efficiency, and certifications.

Most modern labels in the EU and US follow strict standards, such as:

• EU Energy Label (ErP Directive)

• AHRI or EnergyGuide labels (for the U.S.)

• CE, MCS, or ENERGY STAR certifications

Key Elements Found on a Heat Pump Label

1. Model Number and Manufacturer

• Identifies the specific product line and version.

• Useful for comparing across different product generations.

2. Energy Efficiency Rating

• EU: A+++ to D scale (seasonal heating performance).

• US: Expressed via HSPF, SEER, or EER depending on region and application.

3. SCOP (Seasonal Coefficient of Performance)

• Measures seasonal heating efficiency.

• Higher SCOP = better efficiency over an entire heating season.

• Often broken down by climate zone (average, cold, warm).

4. COP (Coefficient of Performance)

• Indicates efficiency under specific test conditions (e.g., 7°C outside, 35°C output).

• Used to benchmark system performance.

5. Sound Levels (dB)

• Lists indoor and outdoor unit noise.

• Important for residential applications where low noise is a requirement.

6. Nominal Heating and Cooling Capacity

• Usually shown in kW.

• Tells you how much heat or cooling the unit can deliver under standard conditions.

7. Water Output Temperature

• Relevant for air-to-water heat pumps.

• May indicate low-temperature (e.g., 35°C) or high-temperature (e.g., 55°C) application compatibility.

8. Power Input & Voltage Requirements

• Includes electrical consumption, phase, and voltage specs.

• Ensures the unit matches your building’s electrical setup.

9. Refrigerant Type

• Example: R32, R290, or R410A.

• Affects both performance and environmental impact (GWP rating).

10. Product Certifications

• CE mark (EU compliance)

• MCS (UK installation certification)

• ENERGY STAR (US energy standard)

• AHRI Certification (North America)

Tips for Interpreting the Label

• Always prioritize SCOP over COP for real-world efficiency.

• Noise level under 40 dB is ideal for residential use.

• Check refrigerant type to ensure low environmental impact.

• Compare energy class ratings between brands and models.

️ Example Breakdown

Let’s say a heat pump label includes:

• SCOP: 4.3 (A++ for average climate)

• Heating capacity: 8 kW

• Sound: 38 dB(A)

• Refrigerant: R32

• Water output: 35°C

• Energy Class: A++

That tells us this unit is quiet, highly efficient, and suitable for low-temperature underfloor heating or radiator systems with good insulation.

✅ Summary: Why This Matters

Reading a heat pump product label helps you:

• Compare systems accurately

• Understand long-term performance

• Ensure proper installation and compatibility

• Evaluate compliance with local regulations and incentives

Whether you're upgrading your heating system or planning a new build, learning how to read a product label is key to making a smart investment.