Heat pumps · Compare

M-TEC AHPC618 vs Thermia iTec XTR XL 400V

SCOP (35 °C): M-TEC AHPC618 5.48, Thermia iTec XTR XL 400V 4.7. The M-TEC AHPC618 is better on 7 of 14 comparable points.

Who wins where

  • M-TEC AHPC618
  • Thermia iTec XTR XL 400V
PerformanceEfficiencyNoiseRefrigerantConnectivity & smartGrants & market
Performance: M-TEC AHPC618 82, Thermia iTec XTR XL 400V 83; Efficiency: M-TEC AHPC618 63, Thermia iTec XTR XL 400V 31; Noise: M-TEC AHPC618 13, Thermia iTec XTR XL 400V 11; Refrigerant: M-TEC AHPC618 70, Thermia iTec XTR XL 400V 74; Connectivity & smart: M-TEC AHPC618 50, Thermia iTec XTR XL 400V 50; Grants & market: M-TEC AHPC618 78, Thermia iTec XTR XL 400V 81

Biggest differences

FactAHPC618iTec XTR XL 400V
Seasonal efficiency ηs 55 °C166.6 %139 %
SCOP (55 °C)4.243.55
Seasonal efficiency ηs 35 °C216.2 %185 %
SCOP (35 °C)5.484.7
Refrigerant charge1.4 kg1.25 kg
COP A-7/W353.132.8
All specifications ↓

Score per area = position (0–100) relative to all 1350 models in this category; higher is better.

Technical specifications M-TECAHPC618 ThermiaiTec XTR XL 400V
Grants & market
Boiler Upgrade Scheme £7,500 – £9,000£7,500 – £9,000
General
Type (source) Air-to-water 1 Air-to-water 1
Performance
Heating capacity (A7/W35) – 16 kW 2
Rated output 35 °C 15.9 kW 1 16 kW ✓ 1
Rated output 55 °C 15.8 kW 1 16 kW ✓ 1
Efficiency
SCOP (35 °C) 5.48 ✓ 1 4.7 1
SCOP (55 °C) 4.24 ✓ 1 3.55 1
Seasonal efficiency ηs 35 °C 216.2 % ✓ 1 185 % 1
Seasonal efficiency ηs 55 °C 166.6 % ✓ 1 139 % 1
Energy label 35 °C – A, , , 2
Energy label 55 °C – A, , 2
COP A7/W35 4.61 ✓ 1 4.51 1
COP A2/W35 3.57 1 3.9 ✓ 1
COP A-7/W35 3.13 ✓ 1 2.8 1
Noise
Outdoor unit sound power 64.6 dB(A) ✓ 1 65 dB(A) 1
Refrigerant
Refrigerant R290 1 R290 1
Refrigerant GWP 3 3 3 2
Refrigerant charge 1.4 kg 1 1.25 kg ✓ 1
Electrical
Max. power input 10.2 kW 1 8.88 kW 1
Connectivity & smart
SG Ready Yes 1 Yes 1
Grants & market
ISDE grant (NL) 4,175 € 3 4,375 € ✓ 3

Sources

  1. List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 27 Sept 2026
  2. Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026
  3. ISDE heat pump notification code list — Rijksdienst voor Ondernemend Nederland (RVO) · accessed 28 Sept 2026