Heat Pump Comparison Report
This document provides a detailed technical and practical comparison between the Emerald All-In-One Pro and Dark Knight All-In-One heat pump hot water systems, including strengths, weaknesses, and final recommendations.
Emerald All-In-One Pro
Dark Knight All-In-One
Key Comparison Parameters
Tank Sizes
220L, 270L, 320L
265L, 315L
Refrigerant
R290 (GWP 3)
R290 (low GWP)
COP
Up to 5.2
Up to 5.21
Rated Heating Capacity
~2.8 kW
2.5 kW
Rated Input Power
0.53 - 0.58 kW
0.89 kW
Recharge Rate Per Hour
Up to 108 L/h
Up to 96.75 L/h
Noise Level
49 dB(A), 45 dB(A) silent
Not specified
Working Range
-7°C to 43°C (down to -15°C with element)
-10°C to 43°C
Electric Heater
1.6 kW optional
2.0 kW optional
Smart Control
Wi-Fi app, solar integration
Not specified
Anti-Legionella
Not mentioned
Yes
Tank Design
Enamel, dual anodes
Enamel, single anode
Warranty
7 years tank, 5 years parts
Not specified
Strengths & Weaknesses
Strengths
- Higher efficiency and lower power input
- Smart Wi-Fi control and solar integration
- Silent operation mode
- Broader working temperature range
- Strong rebate support
- Larger tank options
- Good anti-legionella feature
- Simpler and straightforward operation
Weaknesses
- Slightly lower electric element capacity
- Setup for smart features may require extra effort
- Higher input power
- No smart features
- Less explicit rebate and warranty details
Final Recommendation
For tech-savvy users who want maximum efficiency, solar integration, and future-ready features, Emerald All-In-One Pro is the ideal choice.
For those who prefer a simpler, robust, and straightforward solution, Dark Knight remains a solid option, especially for larger families wanting larger single tank capacity.
