📍 Cardiff 🏴
Heat Pump Installation in Cardiff — 2026
Cardiff has 55+ MCS installers and Welsh-specific funding options. Average install £11,800 — £4,300 net after the £7,500 BUS grant. Plus the Welsh Nest scheme covers 100% for low-income households.
Cardiff avg: £11,800 · £4,300 after BUS
55+ MCS installers · Welsh Nest = 100% for low-income · Welsh capital with growing eco market.
Quick answer: Cardiff heat pump installation costs £10,300-£13,300 for a typical 3-bed semi (8 kW air source). After the £7,500 BUS grant, £2,800-£5,800 net. Cardiff has 55+ MCS installers and access to both BUS (same as England) AND the Welsh-only Nest scheme which covers up to 100% of installation cost for eligible low-income households.
Cardiff heat pump cost by property type
| Property | Pump size | Installed | Net after BUS |
|---|---|---|---|
| 1-bed flat | 4-5 kW | £8,800-£10,300 | £1,300-£2,800 |
| 2-bed terrace | 6-7 kW | £9,800-£11,800 | £2,300-£4,300 |
| 3-bed semi | 8-10 kW | £11,300-£13,800 | £3,800-£6,300 |
| 4-bed detached | 11-14 kW | £13,800-£17,300 | £6,300-£9,800 |
Cardiff-specific notes
- Welsh Nest scheme — for households under £25k income or on benefits, covers up to 100% of install cost. Use instead of BUS if eligible.
- Cardiff Council eco-grants — annual pool of £500-£1,500 top-ups, varies by year
- Strong Victorian terraced stock in Roath, Cathays, Splott — solid-wall requires radiator upgrades
- 1930s suburban semis in Llanishen, Whitchurch, Cyncoed — excellent heat pump retrofit
- Cardiff Bay redevelopment — new builds already heat-pump-fitted
- Welsh-language installer availability for Cymraeg speakers
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Cardiff heat pump FAQ
How much does a heat pump cost in Cardiff 2026?
£10,300-£13,300 for a typical 3-bed semi. After £7,500 BUS grant, £2,800-£5,800 net. Cardiff sits ~12% below UK average.
Should I apply for BUS or Welsh Nest?
Nest is better if eligible (covers 100%). Eligibility: household income under £25k, OR on means-tested benefits, OR over 60 with low pension, OR has chronic respiratory/cardiovascular condition. Otherwise use BUS (£7,500).
Best Cardiff heat pump installer?
We don't endorse firms. Notable Cardiff MCS installers include Octopus Energy Services, BOXT, Cardiff Renewables, and Welsh Heat Pumps. Get 3 quotes.