Where’s the job?

Overview

• Installing air source heat pumps—systems that extract renewable heat from the ambient air to provide energy-efficient heating and, in some cases, cooling.

• Skill level: 4 / 5 (requires careful site planning, secure external mounting, and handling of refrigerant piping and electrical connections).

• Typical duration: 1 – 3 days, depending on system complexity and any necessary structural adaptations.

Safety First

• Always isolate mains power and follow manufacturer instructions when handling electrical and refrigerant systems.

• Secure mounting is crucial—ensure the external unit is firmly attached to avoid vibration or accidental displacement.

• Use appropriate lifting equipment to manage the weight of the external unit safely.

• Handle refrigerant piping with care and ensure all connections are secured to prevent leaks.

• Adhere to all health and safety regulations to protect yourself and others during installation.

Tools & Materials

Step-by-Step

1. Conduct a thorough site assessment – determine the best location with adequate airflow and minimal noise impact.

2. Mount the external unit – install on a level wall or dedicated platform using secure brackets.

3. Connect refrigerant piping and condensate drain – run insulated pipes carefully, ensuring proper slope for drainage.

4. Arrange electrical connections – securely connect wiring to the digital controller and isolate mains during work.

5. Commission the heat pump – perform a vacuum, refrigerant charge and run initial tests to confirm system performance.

6. Finalise installation – secure all connections, tidy cables and ensure the unit is registered for warranty purposes.

Completion Checks

• The heat pump should operate quietly and respond accurately to thermostat settings.

• All electrical and refrigerant connections must be secure with no error codes during testing.

• Final commissioning includes confirming optimum performance and system efficiency.

• Ensure the unit’s display and control panel register normal operating conditions.

When to Call a Pro Instead

If the installation involves significant structural modifications, advanced refrigerant charging or detailed electrical work, it is advisable to consult a certified installer to ensure compliance with UK building regulations and warranty conditions.