Select Electrical Version

Power Supply
220–240V / 1Ph / 50Hz
Max Operating Current
24.16 A
Recommended Breaker
32 A
Order Reference
CGK040V4P
MCS Certified HP0304 A+++ Energy Rating COP up to 5.64 75°C Output -25°C Operation R290 · GWP 3 £7,500 BUS Grant

iHEAT 11.5 kW Monobloc Air Source Heat Pump

Natural R290 Refrigerant · A+++ Rated

Our iHEAT 11.5kW delivers 21% more capacity than the 9.5kW, making it ideal for larger homes and light commercial buildings. Full inverter technology, Carel smart controller, and natural R290 refrigerant combine to deliver A+++ efficiency with ultra-quiet operation. Reaches 75°C without auxiliary heating — compatible with existing radiators for straightforward UK retrofits.

A+++ Energy RatingKEYMARKCE CertifiedSG Ready MCS Certified (HP0304)
Karnot iHEAT 11.5kW monobloc heat pump

Integrated iSAVE™ AI Platform

Blockchain-Verified Carbon Monitoring & Grid Optimisation

Carbon Credit Monetisation

Blockchain-verified emissions data enables automatic generation and sale of carbon credits, creating recurring revenue streams from your heat pump operations.

Virtual Power Plant Ready

Participate in demand response programmes and utility partnerships, earning incentives by shifting thermal loads during peak pricing periods.

Real-Time Performance Optimisation

Cloud-based fluid dynamics models continuously tune system parameters, maximising COP and reducing operational costs by 15–25%.

Predictive Maintenance Analytics

Machine learning algorithms detect anomalies and predict component failures weeks in advance, reducing downtime and maintenance costs by up to 40%.

Solar PV Self-Consumption

Intelligent thermal storage optimisation maximises use of on-site solar generation, reducing grid dependency and accelerating ROI on renewable installations.

Tamper-Proof Data Integrity

Integrated UPS and cryptographic verification ensure continuous, auditable emissions tracking for regulatory compliance and credit certification.

Revenue Enhancement: iSAVE transforms traditional heat pumps into revenue-generating assets through three channels: carbon credit sales, utility demand response payments, and reduced energy procurement costs. Typical installations see 8–15% additional annual returns beyond energy savings alone.

Key Features at a Glance

75°C Hot Water

Reaches high water temperatures without auxiliary electric heating, even in cold climates — perfect for UK retrofit without radiator changes.

A+++ Efficiency

Top-tier energy rating and R290 with GWP 3 ensure minimal environmental impact and lower energy bills year-round.

Whisper Quiet

Dual-dampened Panasonic Twin Rotary Inverter and aerodynamic cabinet from 40.4 dBA.

Smart Control

Manage remotely via the Applica mobile app with real-time status, weather compensation, and three-zone control.

SG Ready

Integrates with smart grids to store thermal energy when electricity is cheapest.

-25°C Operation

Maintains high COP and reliable stability in extreme winter conditions.

Ideal Applications: Modern Hydronic Systems

The iHEAT pump excels when paired with high-performance hydronic distribution systems, delivering significant benefits over traditional forced-air systems.

Maximum Energy Efficiency

Water is 3,500× more efficient than air for thermal transfer, enabling localised zoning and reduced fan energy.

Superior Comfort & Air Quality

Hydronic systems provide silent, radiant comfort with stable temperatures and no drafts.

Architectural Flexibility

Compact water pipes replace bulky air ducts, saving ceiling plenum space and allowing greater design freedom.

UK Retrofit & Installation Advantages

Our R290 high-temperature heat pumps are engineered specifically for seamless UK home retrofits, delivering heating, domestic hot water, and optional summer cooling — all while working with your existing infrastructure.

Use Existing Radiators

75°C output matches gas boiler temperatures — no need to replace radiators or pipework. Simply swap and start saving.

Lower Installation Costs

Avoid expensive radiator upgrades. Retrofits typically cost 40–60% less than low-temperature systems.

Summer Cooling Ready

Connect to our iZONE fan coil units for efficient air conditioning — a complete 3-in-1 climate solution.

Instant Hot Water

Domestic hot water at mains pressure alongside space heating — no separate immersion heater needed.

Boiler Plus Compliant

Exceeds UK Boiler Plus regulations with A+++ efficiency, smart controls, and weather compensation.

MCS & BUS Grant Eligible

MCS certified (HP0304) and eligible for the £7,500 Boiler Upgrade Scheme grant.

Retrofit Reality: Unlike low-temperature heat pumps (35–55°C) that require expensive radiator replacements, our high-temperature R290 systems deliver the same water temperatures homeowners are familiar with — making the transition from gas to clean energy straightforward, affordable, and immediate.

NEW: Warm Homes Plan Grant-Eligible (January 2026)

£7,500 Heat Pump Grant

iHEAT R290 systems qualify for the universal Boiler Upgrade Scheme grant — covering substantial installation costs.

£2,500 Cooling Grant (NEW!)

First-ever government funding for air-to-air systems. iZONE fan coils now receive £2,500 grant support for summer cooling.

Total Government Support: Up to £10,000 — Making Karnot's complete heating + cooling solution more affordable than ever, with no radiator replacement required.

Performance

Max Heating Output11.5 kW
Heating COP Range4.29 – 5.64
Max Cooling Output11.5 kW
Cooling EER Range2.92 – 4.20
Ambient Operating Range-25 °C to 45 °C

Technical Specifications

Order ReferenceCGK040V4P
Power Supply220–240V / 1Ph / 50–60Hz
Max Operating Current24.16 A
Recommended Breaker32 A
CompressorPanasonic Twin Rotary Inverter
PumpGrundfos (R290 Explosion-Proof)
Control SystemCarel Controller
Refrigerant / ChargeR290 / 0.5 kg (GWP 3)
Sound Pressure Level40.4 – 49.2 dBA @ 1m

Dimensions & Weight

Unit Dimensions (L×W×H)1110 × 475 × 960 mm
Net / Gross Weight125 kg / 138 kg
Cabinet MaterialWeather-resistant PP + Galvanised Metal + ABS

Advanced Technology & Design

High-Efficiency Components

Electronic Expansion Valve (EEV) technology combined with a BLDC inverter compressor ensures a higher Seasonal Coefficient of Performance (SCOP) and lower power consumption.

Innovative Cabinet Design

Durable ABS blister panel with 45-degree stripe design and a spiral mesh cover aerodynamically optimised for both aesthetics and noise reduction.

Superior Evaporator

Efficient frost-flow design shortens defrosting time and reduces heat waste. Increased fin area allows a 20% reduction in fan speed vs R32 units, boosting efficiency.

Intelligent Control

Intuitive Management

Intelligent touchscreen and Wi-Fi control allow real-time monitoring and remote management via the Applica mobile app.

Primary Software Functions:

  • Manages primary water (heating/cooling) and domestic hot water (DHW)
  • Modulated, high-efficiency control of fans, pumps, and EEVs
  • Intelligent operating limits and optimised low-load compressor management
  • Automated safety functions: Defrost, Antifreeze, and Anti-Legionella cycles
  • Alarm system with integrated troubleshooting guides

Hydronic System Management:

  • Climate curve management for weather compensation
  • Circulation pump activation controlling up to three distinct zones
  • Specialised screed-drying function for new construction
Disclaimer: Specifications are subject to change without notice. Performance data based on standard test conditions. Please confirm all details before placing an order.