Key information
- Dedicated series: AQ-Forza HT R417
- Published maximum water temperature: Up to 70°C
- Published duty point: 45 kW and COP 2.65 at A7/W65 for AQ-F-045
High-temperature heat pumps for existing radiator systems.
A radiator system can work with a heat pump when emitter output, leaving-water temperature and building heat loss are checked together. AQ-Forza HT is the AQVOCLIMA series for commercial and high-temperature retrofit duties.
Reduce the required temperature first
Check whether the radiators can meet the load at 45–55°C during normal weather using compensation control. Every reduction in water temperature improves efficiency.
- Calculate actual radiator output
- Correct flow imbalance
- Consider targeted fabric improvements
Where high temperature is required
Water temperatures of 60–70°C may be required by existing systems, hot-water production or specific commercial duties. Select from the relevant A/W point, not nominal output alone.
- Check COP at W55, W65 or W70
- Verify electrical input and current
- Confirm water flow and pressure drop
Retrofit checks
| Question | Required information |
|---|---|
| How much output? | Heat loss at the design outdoor temperature. |
| At what water temperature? | Radiator output at the proposed flow temperature. |
| What efficiency? | COP at the project air/water condition. |
| Which hydraulic arrangement? | Flow, system volume, DHW and zone control. |
Mistakes to avoid
- Assuming every radiator system always needs 70°C.
- Using A7/W35 COP for a W65 project.
- Ignoring electrical input at the most demanding point.
Frequently asked questions
Can I keep the existing radiators?
Often yes, but their output must be checked at the proposed water temperature and compared with each room load.
Does high temperature always mean poor efficiency?
Efficiency falls as water temperature rises, so weather compensation and the lowest practical setpoint remain important.