Heat pump controls are the settings and devices that decide how warm the water in your heating is, when the heat pump runs and when it heats hot water. The most important is weather compensation, which raises the flow temperature gradually as it gets colder outside and lowers it in milder weather, so the system only ever runs as warm as it needs to.
Across Dyfed and Dyfed, heating curves are fine-tuned after the first cold spell to suit how each house responds. Homeowners in Dyfed get a walkthrough of their controls at handover, with a simple written guide to keep. Hot water schedules in Dyfed can be timed to suit shift work, school runs or working from home.
Who it suits
- Every new heat pump installation, set up at commissioning
- Homes with solar PV or a battery that want hot water timed to match
- Existing heat pumps that feel expensive to run or slow to respond
- Households considering a heat pump or time-of-use electricity tariff
Grants and rules for heat pumps in Wales
In Wales the Boiler Upgrade Scheme gives £7,500 towards an air source heat pump (£9,000 if it replaces oil or LPG, from 21 July 2026 to 31 March 2027; £2,500 for air-to-air). The MCS-certified installer named in your quote applies to Ofgem for you, and the grant comes off your quote.
There is no VAT on installing a heat pump anywhere in the UK, Wales included, until 31 March 2027. Planning rules for heat pumps in Wales are set by the Welsh Government and differ from England's, so the surveyor checks the unit position against them.
Prices
Weather-compensating controls and set-up are included in every full system price. See the guide prices for full systems.
Towns we cover in Dyfed
We cover 11 towns in Dyfed for heat pump controls and tariffs. Each links to local guide prices and the grant position for Wales.
| Town | Postcode district | Nearest town | Midwinter daylight |
|---|---|---|---|
| Llanelli | SA15 | Gorseinon | 7 h 48 min |
| Ammanford | SA18 | Pontardawe | 7 h 47 min |
| Aberystwyth | SY23 | Machynlleth | 7 h 40 min |
| Carmarthen | SA31 | Llanelli | 7 h 46 min |
| Cardigan | SA43 | Fishguard | 7 h 44 min |
| Fishguard | SA65 | Haverfordwest | 7 h 44 min |
| Haverfordwest | SA61 | Milford Haven | 7 h 46 min |
| Lampeter | SA48 | Carmarthen | 7 h 43 min |
| Milford Haven | SA73 | Pembroke Dock | 7 h 47 min |
| Pembroke Dock | SA72 | Milford Haven | 7 h 48 min |
| Tenby | SA70 | Pembroke Dock | 7 h 48 min |
Heat pump controls and tariffs questions
Is a heat pump tariff a good idea?
A heat pump or time-of-use tariff can lower running costs if your household can shift hot water heating and some space heating into the cheaper periods. Whether it suits you depends on the rates, the standing charge, your routine and whether you have a battery. Compare the total expected cost on your own usage, not only the headline rate.
What flow temperature should my heat pump run at?
It depends on the design: the flow temperature is set so your radiators or underfloor heating can heat each room on a cold day. Well-designed systems typically run at around 35–50°C at their coldest, and lower in milder weather through weather compensation. Your design paperwork states the design flow temperature, and we set the heating curve to match it.
Should I turn my heat pump off at night?
Usually not. Switching off lets the house cool, and the heat pump then has to run at a higher flow temperature to recover, which lowers efficiency. A small set-back of 1–2°C overnight is generally more economical. Homes with very good insulation or a time-of-use tariff may suit different patterns, which we can set up.
Can I control my heat pump from my phone?
Many heat pumps offer an app or work with smart thermostats, letting you change temperatures, set schedules and see energy use from your phone. Features vary by make and model, and app control usually needs a reliable internet connection at home. The heating keeps running on its own settings if the connection drops.