As the demand for energy-efficient and environmentally friendly solutions increases, heat pump technology has gained widespread attention. At the core of any heat pump system’s performance is its COP—Coefficient of Performance. In this article, we take a deep dive into what heat pump COP really means, what affects it, and how to interpret test results using actual ERP-certified data from the SolarEast BLN-012TC1 monoblock heat pump.
COP, or Coefficient of Performance, represents how much heating energy a heat pump generates from one unit of electricity.
Formula: COP = Heating Output (kW) ÷ Power Input (kW)
For example, the SolarEast BLN-012TC1 delivers:
COP 4.56 under standard A7/W35 conditions
COP 2.89 at A7/W55, when higher water outlet temperature is required
Note: In test conditions like “A7/W35”, “A7” means outdoor air at 7°C, and “W35” means water outlet temperature of 35°C.
This shows that the higher the water temperature, the lower the system’s efficiency.
The cop for heat pump systems is never fixed—it changes based on multiple technical and environmental conditions:
Warmer air provides more usable heat, raising COP.
For instance, the COP reaches 9.59 at A12/W24, while dropping to 1.89 at A-10/W55.
Higher outlet temperatures require more energy and reduce efficiency.
Most cop heater units perform better at partial loads. At A7/W27, the BLN-012TC1 reaches a COP of 7.10.
Compressor: Inverter rotary compressor (Model: WHP13300PSDPC8FQ) for stable and efficient performance
Expansion Valve: Electronic type (Model: CAM-BD24FKS-12), ensuring precise refrigerant flow control
Refrigerant: R290, a natural refrigerant with GWP of just 3, combining eco-friendliness and thermal performance
Evaporator: Copper-aluminum fin structure with 80m² heat exchange surface
Condenser: Plate heat exchanger (Model: C39L-EZ-54) for compact, high-efficiency heat transfer
In cold climates, defrosting impacts real efficiency. The BLN-012TC1 features a reliable automatic defrost function.
COP represents performance at a single test point.
SCOP (Seasonal COP) averages performance over an entire heating season, following EN 14825 standards.
SEER applies to cooling mode and is not a primary factor for heating-focused systems.
According to certified test results:
Application Type | SCOP | Energy Efficiency Class |
Low-Temperature | 5.07 | A+++ |
Medium-Temperature | 3.76 | A++ |
These SCOP values correspond to ηs values of 199.8% and 147.4%, confirming excellent year-round efficiency.
Even at -10°C ambient temperatures, this cop heater maintains reliable performance with COP > 2.7—ideal for cold climate heating.
Although high heat pump COP values imply better energy efficiency, they don't always guarantee the best choice. Choosing the right heat pump depends on your specific climate, heating system, and budget.
Here’s what to consider:
Initial Cost vs Payback Period
High-COP units often cost more. Whether they’re worth it depends on electricity rates and usage frequency.
Climate Sensitivity
In colder regions (e.g., Scandinavia), focus on stable COP under conditions like A-7/W34
In milder regions (e.g., Mediterranean or Gulf countries), partial load efficiency and SCOP become more relevant (e.g., A12/W24 COP = 9.59)
System Type Compatibility
Underfloor heating systems are more efficient at W35; radiator-based systems may require W55, where COP naturally drops.
Smart Control Capability
BLN-012TC1 supports inverter modulation and IoT remote control, maintaining optimal coefficient of performance heat pump values even during variable loads.
Regulatory & Environmental Compliance
R290 refrigerant not only improves COP, but also ensures long-term compliance with European F-gas regulations.
In short: The best heat pump is not always the one with the highest COP, but the one that best matches your actual needs and long-term savings goals.
The SolarEast BLN-012TC1 heat pump delivers impressive performance across certified test conditions—not only achieving a peak COP of 9.59, but also maintaining SCOP 5.07 and ηs 199.8% over the entire heating season.
With its optimized component design and eco-friendly R290 refrigerant, it represents a strong balance of performance, compliance, and sustainability.
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Want the full ERP test report or technical specifications? Contact us todayto explore OEM cooperation or product integration opportunities.