- Wednesday 04 February 2026
Heat Pump Energy Saving Tips: Cut Running Costs in Ireland (2026)
Quick answer: Reduce running costs by optimising settings, scheduling hot water to cheap hours, and choosing the right electricity tariff — especially night-rate or smart (time-of-use) plans.
Heat pumps are efficient, but your settings and tariff choice make a big difference to your electricity bill. Below are practical, Ireland-specific tips to reduce running costs without losing comfort.
Want the best tariff for your heat pump? Use Find the Best Deal and we’ll recommend the right plan for your usage and meter type.
1) Run your heat pump steadily
Heat pumps work best when they maintain a steady temperature instead of rapid on/off cycles.
- Use consistent temperature settings
- Avoid frequent manual overrides
- Let the system “tick over” rather than spike
Pair this with a tariff that rewards flexible, off-peak use.
2) Choose the right tariff
Your tariff matters because heat pumps increase electricity use. Many homes benefit from:
- Day/Night tariffs – cheaper rates at night
- Smart tariffs – multiple time bands with cheap off-peak/boost windows
To compare smart and non-smart options, read: Smart Meter Tariffs in Ireland (2026).
Learn when night vs day rates apply: Day vs Night Electricity Tariffs.
Compare suppliers effect on overall price: Best Electricity Provider in Ireland (2026).
See overall cheapest options: Cheapest Electricity in Ireland (2026).
3) Schedule hot water for off-peak hours
Heating hot water during cheaper off-peak times (typically overnight) can lower your bill. This works especially well if your tariff supports low night/boost rates.
If you’re unsure how your tariff affects your hot water schedule, get personalised guidance: Find the best deal.
4) Service your heat pump yearly
Annual maintenance keeps efficiency high and prevents performance issues:
- Check filters and airflow
- Confirm system settings
- Spot problems early
5) Reduce heat loss
Good insulation and airtightness help the heat pump work less:
- Draft-proof your home
- Insulate attic and walls
- Use heating controls and timers
Lower demand means lower costs.
6) Do you still have gas?
Most heat pump homes are electricity-only, but if you have gas (e.g., for cooking), it might be worth checking a dual fuel deal for combined savings.
---FAQs – Heat Pumps & Electricity Savings (Ireland)
Q: Do heat pumps cost a lot to run in Ireland?
A: They can if you’re on the wrong tariff or have inefficient settings. With proper scheduling and a suitable tariff, many homes significantly reduce running costs.
Q: What tariff works best for heat pumps?
A: Many heat pump homes benefit from night-rate or smart tariffs if they can shift flexible loads (like hot water) into cheaper windows. But the “best” depends on usage and meter type.
Q: Should I always run my heat pump all day?
A: A steady setpoint often beats frequent on/off cycles. Your installer should help set this for efficiency.
Q: Should I schedule hot water at night?
A: Yes, if your tariff rewards cheap off-peak usage — which most day/night or smart tariffs do.
Q: How often should a heat pump be serviced?
A: Generally once per year by a qualified technician to keep performance high and prevent issues.
Q: Where can I find the cheapest electricity options?
A: Start with Cheapest Electricity in Ireland (2026), then use Find the Best Deal to get personalised recommendations.
Next step
If you want lower heat pump costs without the hassle, WeSwitchU can recommend the best electricity tariff for your home’s usage pattern and meter type.
Find the best deal for your heat pump
Call 01-9125161 or email [email protected] if you need help.