Air Source Heat Pump Installation in Narberth, Pembrokeshire

Smart Energy Homes recently completed an air source heat pump installation at a four-bedroom bungalow in Narberth, Pembrokeshire, helping the homeowner transition away from oil heating and towards a more efficient renewable energy solution.

The customer initially contacted us after concerns developed around their existing oil heating system. Although the boiler itself was only around eight years old, the oil tank required replacement and the homeowner had begun noticing issues, including a noticeable smell of oil and concerns about the tank’s condition. Faced with the prospect of replacing both the tank and continuing reliance on oil deliveries, they decided to explore whether an air source heat pump could provide a more cost-effective long-term alternative.

Following a detailed home survey and system design, Smart Energy Homes recommended a Grant Aerona 290 6.5kW Air Source Heat Pump, helping future-proof the property’s heating system while improving efficiency and reducing reliance on fossil fuels.

Understanding the Property

The property is a four bedroom bungalow located near Narberth in Pembrokeshire. Built between 1920 and 1939, the home benefits from cavity wall construction, cavity wall insulation and loft insulation, helping to improve overall thermal performance.

At the time of our survey, the property was heated by an oil boiler system connected to an ageing oil tank that required replacement. The homeowner’s primary objective was to reduce heating costs while avoiding further investment in oil heating infrastructure.

Property Overview

  • Location: Narberth, Pembrokeshire
  • Property Type: Four-Bedroom Bungalow
  • Construction Period: 1920-1939
  • Wall Type: Cavity Wall Construction
  • Insulation: Cavity Wall Insulation & Loft Insulation
  • Previous Heating System: Oil Boiler
  • Existing Radiators: 12
  • Customer Goal: Reduce heating costs and avoid replacing an oil tank
  • Installation Duration: 4 Days
The Recommended Solution

Following a full heat loss assessment and survey, Smart Energy Homes recommended a renewable heating system centred around a Grant Aerona 290 6.5kW Air Source Heat Pump.

System Installed

  • Air Source Heat Pump: Grant Aerona 290 6.5kW
  • Hot Water Cylinder: Elite Horizontal 180L Cylinder
  • Heating Controls: Grant Aerona 290 Smart Controller
  • Central Heating Upgrade: Partial
  • Heat Pump Location: Outside the Office
  • Cylinder Location: Purpose-Built Outhouse
  • Installation Duration: 4 Days

The system was carefully designed to suit the property’s heating requirements while helping maximise efficiency and comfort.

Installation Process

The installation was completed over four days by the Smart Energy Homes heating team.

The project included:

Installation of the Grant Aerona 290 heat pump
Installation of the new hot water cylinder
Radiator upgrades
Smart heating control installation
System commissioning
Testing and optimisation

Following installation, the system was thoroughly tested and configured to ensure reliable and efficient operation.

Why Replace Oil Heating with an Air Source Heat Pump?

For many homeowners across Pembrokeshire, oil heating remains a common solution. However, rising fuel costs and ageing equipment often prompt homeowners to explore renewable alternatives.

Benefits of upgrading to an air source heat pump can include:

  • Improved energy efficiency
  • Reduced reliance on oil deliveries
  • Lower carbon emissions
  • Consistent home comfort
  • Renewable heating technology
  • Long-term energy savings

For this homeowner, the decision was driven by both practicality and cost, avoiding the need to replace an ageing oil tank while investing in a future-ready heating system.

Air source heat pump unit installed on a stone patio
Radiator Upgrades

To ensure the heat pump operated effectively at lower flow temperatures, selected radiators were upgraded as part of the installation.

New Radiators Installed

  • Bathroom: Stelrad Halcyon 600×600 K2
  • Bedroom 1: Stelrad Halcyon 600×600 K1
  • Bedroom 3: Stelrad Halcyon 600×700 K1
  • Office: Stelrad Halcyon 600×700 K1

Correctly sized radiators are essential for achieving optimum heat pump performance and maintaining comfortable temperatures throughout the property.

Looking for a Heat Pump Installer in Narberth?

If you’re considering replacing an oil heating system with an air source heat pump in Narberth, Pembrokeshire or the surrounding area, Smart Energy Homes can help.

Our experienced team installs renewable heating systems across Pembrokeshire, Carmarthenshire, Swansea, Cardiff, Newport and the wider South West, helping homeowners improve efficiency, reduce running costs and future-proof their homes.

Contact Smart Energy Homes today to arrange a free home survey and discover whether an air source heat pump could be the right solution for your property.

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