FJORD: Air Source Heat Pump Cylinder
Key Features
The Fjord air source heat pump cylinder is engineered to deliver domestic hot water independently without placing any demand on your external heat pump. Its fully integrated air-to-water heat pump operates as a self-contained system drawing external air in via a small ducting route to maintain consistent hot water temperatures without ever diverting energy from space heating. Powered by natural R290 refrigerant, combined with an electric anode, the Fjord achieves A+++ efficiency while significantly reducing environmental impact.
Unlike conventional cylinders that depend on high-wattage immersion heaters for legionella protection cycles, the Fjord reaches required temperatures through its own heat pump operation. This eliminates unnecessary electrical spikes, reduces component stress, and lowers long-term maintenance requirements.
The result is stable, efficient hot water production, improved whole-system performance, and a simplified hydraulic design — engineered for reliability rather than compromise.
Smart Controls & Intelligent Optimisation
The Fjord integrates seamlessly with the Adlår intelligent control system, providing precise management of hot water temperature, production timing, and overall system performance.
Rather than relying on crude timed heating or aggressive reheating cycles, the Fjord uses intelligent system logic and temperature modulation to maintain water at the correct temperature efficiently and hygienically. Automated legionella protection cycles are embedded within the control architecture, safeguarding water quality without unnecessary reliance on high-wattage electrical boost.
Instead of allowing large temperature drops and reheating at high load, the system monitors the differential between target and tank temperature, initiating reheating when the variance approaches 5°C. This controlled strategy maintains dependable supply while achieving a COP of up to 3.6.
The result is predictable hot water performance, reduced energy waste, and intelligent optimisation operating quietly in the background.
The Adlår Dual Heating System
Aurora II External Unit
- Dedicated space heating only
- Stable flow temperature control
- High SCOP performance
- Low acoustic output
- Available in 4Kw/6kW /10kW /14kW
- The external engine of the system.
Fjord Heat Pump Cylinder
- Independent hot water production
- Integrated internal heat pump
- Summer-only hot water mode (external unit off)
- High domestic hot water COP
- Separates hot water demand from heating stability.
Adlår Control Box
- Central system management
- Integrated weather compensation
- Reduced system losses
- Fewer failure-point components
- Designed to simplify the hydraulic architecture while improving efficiency.
Adlår Smart App
- Real-time system oversight
- Heat curve optimisation
- Mode management
- Remote monitoring (Platinum)
- Control when you want it. Efficiency at all times.
Fjord Cylinder Water Capacity & Dimensions
Energy Performance
For the Fjord 200L cylinder (typical mid-range
unit):
Daily Energy Consumption (20°C/15°C
condition): 3.605 kWh/day COP: 3.605
Therefore, useful heat delivered =
3.605 kWh × COP = ≈ 13.00 kWh/day
So, heat drawn from the environment =
13.00 – 3.605 = ≈ 9.395 kWh/day
Fjord cylinders typically draw between 7.8–9.4kWh/day from the surrounding environment.
Specifications
Voltage (V/Hz): 220-240/50 Hz | 220-240 50 Hz | 380~415 50 Hz
Capacity (kW): 1.1* (+1.55**) | 1.6* (+1.5**) |1.6* (+1.5**)
Duct Air Flow (nom.): 250 | 350 | 350
Rated Power Input (W): 416 (+1550**) | 600 (+1500**) | 600 (+1500**)
ELE. Heating Rated Input (W): 1550 | 1500 | 1500
Current (nom.) (A): 1.30* (+6.8**) | 1.88* (+6.8**) | 1.88* (+6.8**)
Current (Rated.) (A): 1.81 (+6.8**) 2.61 (+6.8**) 2.61 (+6.8**)
Max outlet water temperature (without using E-heater) (°C): 60
Refrigerant type/charge (…/g): R290/150
COP (W/W): 2.626*** | 2.915*** | 3.113***
Storage Tank Volume (L) 120 | 200 | 300
Sound Power Level (dB(A)): 55.0**** | 55.3**** | 55.7****
- Legionella Protection: Achieved without immersion heater
Aurora II Core
Aurora II Pro
Superior Comfort
Switch Your External Heat Pump Off in Summer
Because the Fjord operates independently, you can turn off your external Aurora unit during warmer months — reducing energy use even further while still enjoying reliable hot water year-round.
A+++ Efficiency with Natural R290 Refrigerant
Powered by eco-conscious R290, the Fjord delivers outstanding efficiency with ultra-low environmental impact — without requiring your external heat pump to run on R290.
No Immersion Heater Required
The Fjord is engineered to reach full legionella protection temperatures without relying on an immersion heater.
Quiet, Reliable, Built for Modern Homes
With whisper-quiet operation and smart controls, the Fjord fits seamlessly into utility rooms and existing cylinder cupboards — delivering dependable hot water without disruption.
Fjord Cylinder vs Standard Hot Water Cylinder
Standard Hot Water Cylinder
When comparing the Fjord cylinder with a standard hot water cylinder, the difference is fundamental not incremental.
A conventional cylinder is dependent by design.
- Soley relying on an external heat pump or boiler
- Competes directly with space heating demand
- Frequently requires immersion heater support
- Introduces complex plumbing, valves, and switching systems
- Forces the primary heat source to divert energy away from heating
The Fjord Cylinder
The Fjord, by contrast, is engineered as an independent hot water system.
- Producing domestic hot water autonomously
- Eliminating competition between heating and hot water
- Reducing system strain and cycling
- Improving real-world seasonal efficiency
- Simplifying hydraulic design
- Allowing the external heat pump to be switched off entirely during summer months
- Features exceptional thermal insulation, losing less than 1°C of stored temperature per day
The result is a cleaner system design, greater operational stability, and retained heat performance that protects efficiency long after the heating cycle has completed.
What’s Included in Our Standard Installation
Our starting-from prices include professional installation under the following standard criteria:
- Aurora II Pro floor-mounted within 5 metres of the existing boiler flue
- External pipework installed neatly in protective trunking
- Fjord cylinder installed in the existing cylinder cupboard
- Existing hot & cold feeds and pressure-relief drainage in place
160 mm cylinder ventilation already present - All electrical works included
- No radiator or emitter upgrades required
- Grant approval handled by Adlår
- Full home energy assessment and heat-loss report completed by our team
Any additional works are confirmed following your site survey and heat-loss results.
Frequently asked questions
No. The Fjord has its own integrated heat pump and operates independently.
It allows each system to run at optimal temperatures, improving comfort, efficiency, and longevity.
No. It reaches full legionella cycle temperatures without one.
Yes. R290 is a natural refrigerant used safely in modern systems and installed by certified specialists.
The Fjord is typically installed as part of a BUS-eligible heat pump system, contributing to overall grant funding.
