Understanding your air source heat pump system.

Your home at Rydon Village is fitted with a modern Grant Aerona³ Air Source Heat Pump (ASHP) system. This system has been designed to provide:

·efficient heating
·comfortable living conditions
·lower-temperature, steady heat delivery

Your installation has been carried out using trained engineers familiar with Grant systems, and your home benefits from manufacturer-backed warranty support.

How your heating system works

An air source heat pump works differently to a traditional gas or oil boiler. Instead of producing short bursts of high heat, the system is designed to:

·operate steadily over longer periods
·maintain a more consistent indoor temperature
·run efficiently in the background

This is normal operation.

What to expect

Because the system works differently to traditional heating systems, you may notice:

·the home warms up more gradually
·the heating may run for longer periods
·underfloor heating may feel lower in temperature than older systems

This does not mean the system is faulty. Heat pumps are designed to provide steady comfort rather than rapid bursts of heat.

Best practice for efficient operation

For best performance and comfort, we recommend:

·maintaining a consistent temperature
·avoiding repeatedly switching the system on and off
·allowing the system time to respond gradually
·keeping ventilation and airflow around the external unit clear

The system is most efficient when allowed to operate steadily. This aligns with Grant's user guidance and recommended operating principles for the Aerona³ system.

Hot water

Your system also provides domestic hot water. You may notice:

·hot water recovery can take time after heavy use
·heating and hot water cycles may operate separately

This is normal behaviour for heat pump systems.

Weather compensation

Your system may use weather compensation controls. This means:

·the heating automatically adjusts based on outdoor conditions
·the system may behave differently during colder or milder weather

This helps improve comfort and efficiency. Grant's own guidance references weather compensation as part of normal Aerona³ operation.

Noise & external unit operation

The external unit contains fans and refrigeration equipment. During operation:

·some operational noise is normal
·airflow from the unit is normal
·condensation and water drainage around the unit can occur

The external unit should:

·remain unobstructed
·not be covered
·have adequate airflow maintained

Looking after your system

To help maintain performance:

·keep the external unit clear of leaves and debris
·avoid blocking airflow
·ensure recommended servicing is carried out
·follow manufacturer guidance

Your homeowner documentation includes links to the Grant Aerona³ user information.

Grant Aerona³ user informationGrant UK · PDF · opens in a new tab ↗

Warranty & support

Your heating system benefits from:

·manufacturer-backed support
·installation by trained engineers familiar with Grant systems
·applicable manufacturer warranty coverage

Please retain all documentation provided.

Common questions

"Why does the heating feel different to my old boiler?": Heat pumps provide lower-temperature, more consistent heat over time rather than short bursts of very hot heat.
"Why does the system run for long periods?": This is normal and helps the system operate efficiently.
"Should I turn it off when I go out?": Generally, heat pumps work best when maintaining a stable temperature rather than being repeatedly switched on and off.
"Is noise from the outside unit normal?": Yes — fan and operational noise are normal during operation.
"Why are my radiators not extremely hot?": Heat pumps usually operate at lower flow temperatures than traditional boilers. This is part of normal efficient operation.

Need help?

If you believe your heating system is not operating correctly:

·please contact us in writing
·include photos or details where possible
·avoid altering system settings significantly before reporting an issue