South Wales

town guide / postcode confirmation required

Heat pump support
in Caerphilly.

Heat-pump service and repair information for homes in Caerphilly, with the right scope confirmed against the property, equipment and access conditions. Availability is confirmed from your postcode and system details.

Why this guide is different

Start with the
right detail.

Caerphilly combines a historic town setting around Cadw’s Caerphilly Castle, a major medieval fortress begun in 1268, with the wider borough’s valley communities and varied housing stock. The council’s housing strategy prioritises energy-efficient materials and technologies, targeted retrofit of existing homes, climate-resilient housing and improved warmth and accessibility. Its decarbonisation programme also records whole-house retrofit activity and work on renewable technologies; a council case study in Cefn Ilan, Abertridwr describes fabric-first measures, renewable technologies, damp and mould remediation, and resident guidance on heating, ventilation and renewables. For properties near heritage assets or in a conservation-sensitive setting, installation planning should consider visual impact, external equipment position, listed-building or conservation-area requirements, and any need for planning advice before work starts.

  • Provide the full postcode, property type, approximate construction age, and whether the home is detached, semi-detached, terraced or a flat; these details help frame access and retrofit context.
  • Share the heat-pump make, model, system type, installation date if known, cylinder or buffer-tank details, and the latest service or commissioning records.
  • For a repair, note the exact symptom, fault code, affected heating or hot-water zones, and any recent electrical outage, plumbing change, insulation work or ventilation alteration.
  • Keep access clear to the indoor unit, cylinder, controls and outdoor unit, and flag early if the property is listed, lies in a conservation area, or has restricted external access so planning and safe working checks can be considered.
01 / Planned care

Caerphilly heat pump
service.

Planned heat-pump servicing in Caerphilly can cover system inspection, controls and settings, filters and circulation, safety checks, refrigerant-related checks where applicable, heat-emitter performance, condensate or defrost arrangements, and review of operating efficiency. A service assessment should record the heat-pump type, age, make and model, cylinder or buffer arrangement, emitter configuration, and the location and access route to indoor and outdoor components. Where a property forms part of a retrofit project, service planning should be coordinated with insulation, ventilation and resident-use guidance rather than treating the heat pump as an isolated appliance.

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02 / Fault support

Caerphilly heat pump
repair.

Repair enquiries are separate from planned servicing and should describe the symptom, when it began, any warning or fault code, whether heating or hot water is affected, recent power interruptions or building work, and whether the outdoor unit is obstructed or iced. A repair assessment may need to distinguish controls, electrical supply, circulation, sensors, valves, defrost, condensate, cylinder, emitter and refrigerant-system issues. Do not reset repeatedly or open sealed/refrigerant circuits; provide the model information and photographs only when safe, and arrange qualified diagnosis for electrical or refrigerant work. In heritage-sensitive locations, replacement equipment or altered external routing may require the same planning review as a new installation.

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facts first.

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Local context sources

Useful local
context.

These public sources inform the guide. They do not establish service availability or describe work by Heat Pumps Service.

Caerphilly questions

Clear answers
before you book.

Can a heat pump be serviced if it was installed as part of a wider retrofit?+

Yes, an assessment can consider the heat pump alongside insulation, ventilation, controls and heat emitters. Caerphilly’s retrofit work emphasises fabric-first improvements, renewable technologies and resident guidance, so the system history and any retrofit documentation should be supplied.

What should I do if my Caerphilly heat pump shows a fault code?+

Record the code, the time it appeared and whether heating or hot water has stopped, then provide the make and model. Avoid opening the unit or repeatedly resetting it; a qualified diagnosis can establish whether the issue is with controls, power, circulation, sensors, defrost, condensate or a sealed refrigerant circuit.

Could Caerphilly heritage considerations affect an outdoor unit or pipe route?+

They can. Caerphilly Castle is a protected historic asset, and listed buildings or conservation-sensitive properties may require advice about siting, appearance and external alterations. Check the property’s designation and planning requirements before committing to a visible installation or replacement route.