Step 1 ☀️ RECOMMENDED
Solar panels
Browse panels →
Step 2 ⚡
Inverter
Browse inverters →
Step 3 🚐
EV Charger
Browse chargers →
Step 4 🔋 Optional
Battery
Browse batteries →
Step 5 🧠 Recommended
Smart Energy
Browse EMS →
Step 6 🌡️ You are here
Nibe heat pump
~€26,000
S2125-16 16 kW
Step 7 💧 Required
Hot Water Cylinder
Store heat pump output
Browse cylinders →
💡 Heat pump + hot water cylinder is the most common combination in Irish home energy upgrades. SEAI grants of up to €12,500 available for heat pumps. Apply at seai.ie →
Nibe · Commercial Heat Pump · Ireland 2026
Nibe S2125-16 16 kW — Ireland 2026
Swedish commercial-scale — integrated 250L cylinder for large and commercial retrofits
The S2125-16 includes a 250L factory-integrated hot water cylinder — a meaningful simplification on commercial projects. Suitable for larger detached homes, B&Bs, small hotels and multi-unit residential developments.
16 kW
SCOP 4.52
52 dB(A)
Max 65°C
R-32
SEAI grant up to €12,500
250L cylinder included
⚙️ Specifications
| Heating capacity | 16 kW |
| SCOP @ W35 (underfloor) | 4.52 |
| SCOP @ W55 (radiators) | 3.05 |
| COP A7/W35 | 4.42 |
| COP A7/W55 | 2.85 |
| Max. flow temperature | 65°C |
| Operates to | -20°C outdoor |
| Outdoor noise level | 52 dB(A) |
| Refrigerant | R-32 |
| Hot water cylinder | Included — 250L |
| Outdoor unit dimensions | 1300 × 1290 × 640 |
| Outdoor unit weight | 182 kg |
| Warranty | 5 years |
| SEAI grant eligible | Yes — €12,500 |
💰 Pricing & SEAI grant
Typical installed price (incl. installation)
~€26,000
Supply (~€16,800) + installation, commissioning and cylinder (included)
💰 SEAI grants for commercial heat pumps
SEAI Better Energy Communities (BEC) — percentage grant for schools, community buildings, GAA clubs
SEAI Support Scheme for Renewable Heat (SSRH) — annual support for commercial & industrial buildings
SEAI Non-Domestic MECS — for multi-unit residential developments
Individual unit SEAI grant: up to €6,500 (verify current amounts at seai.ie)
View commercial grants at seai.ie →
SEAI Support Scheme for Renewable Heat (SSRH) — annual support for commercial & industrial buildings
SEAI Non-Domestic MECS — for multi-unit residential developments
Individual unit SEAI grant: up to €6,500 (verify current amounts at seai.ie)
Key highlights
💧
250L cylinder included at commercial scale
Factory-integrated 250L hot water cylinder eliminates a major sourcing and installation task on commercial projects — particularly valuable for B&Bs and guest houses where hot water demand is high
⚡
16 kW — large home and small commercial
Bridges the gap between residential (7–11 kW) and full commercial (20 kW+) — the right capacity for large detached homes, farmhouses, B&Bs and manor house conversions
🖥️
SCADA integration
Beyond standard Modbus, the S2125-16 supports SCADA integration for building managers who want heat pump data within a wider energy management platform
🏠 Suitable for
Large detached homesB&BsHeritage buildingsMulti-unit
Compatibility note: Yes — up to 65°C, suits larger heritage and commercial buildings. A SEAI-registered heat pump installer will complete a heat loss assessment and radiator compatibility check before installation — this is required as part of the grant process.
✅ What we like
- 250L hot water cylinder factory-integrated — no separate cylinder sourcing on commercial projects
- 16 kW output — suitable for large homes, B&Bs and small hotels
- SCOP 4.52 — strong seasonal efficiency at commercial scale
- 52 dBA — quieter than most commercial alternatives
- SEAI grant eligible with potential for community grant supplement
⚠️ Worth knowing
- Premium supply price (~€16,800)
- Heavy at 182 kg — specialist handling required
- Fewer Nibe commercial installers than Daikin or Mitsubishi in Ireland
- Operates to −20°C vs −25°C for some rivals
💧 Compatible hot water cylinders
The S2125-16 16 kW requires a separately purchased hot water cylinder with a large primary coil (minimum 2.5 m²) to work efficiently at heat pump flow temperatures of 45–55°C. These cylinders are confirmed compatible with Nibe heat pumps. Browse all cylinders →
Joule
Cyclone Std High Gain 210L
210L
Ireland's most popular HP cylinder — made in Waterford, 3.1m² coil
🇮🇪 Irish-made · 25yr warranty
~€650
Coil area: 3.1 m² · View cylinder →
Range
Tribune HE HP 210L
210L
New build default — 3.35m² coil, fastest heat transfer
25yr warranty · largest coil
~€690
Coil area: 3.35 m² · View cylinder →
Kingspan Albion
Ultrasteel Duplex HP 180L
180L
Duplex stainless — best for hard water and coastal Ireland
🇮🇪 Irish-made · Duplex stainless
~€820
Coil area: 3.0 m² · View cylinder →
Telford
Tempest HP Stainless 200L
200L
Mitsubishi Ecodan approved — 3.4m² stainless coil
Mitsubishi approved · Stainless
~€780
Coil area: 3.4 m² · View cylinder →
💰 SEAI grant covers the cylinder: The cylinder cost is included within the SEAI Heat Pump System Grant (up to €12,500). Cylinders are not individually grant-funded — the grant applies to the total installed system cost.
🧠 Compatible smart energy devices
Smart thermostats and energy management systems reduce heat pump running costs by 15–30% by scheduling operation around cheap electricity, solar generation and occupancy patterns. Browse all smart energy products →
🌡️ Smart thermostats — control your heat pump
Tado · Smart Thermostat
Smart Thermostat V3+
Geofencing, weather adaptation, OpenTherm modulation for heat pumps
✅ SEAI registered · OpenTherm
~€130
View thermostat →
Honeywell Home · Smart Thermostat
T6R Wireless Smart Thermostat
OpenTherm modulation, wireless receiver, SEAI-registered
✅ SEAI registered · OpenTherm
~€120
View thermostat →
⚡ Energy management — coordinate solar, battery & heat pump
myenergi · Smart Energy / HEMS
myenergi Hub & Ecosystem
Coordinates solar surplus diversion to immersion + EV charging + battery
🔌 EV + Solar + Battery
~€75 (Hub)
View product →
Huawei · Smart Energy / HEMS
FusionHome Smart Energy Controller
AI optimises when heat pump runs based on solar generation and tariff
🧠 AI scheduling · Free with inverter
Free (with Huawei SUN2000)
View product →
myenergi · Solar Diverter
Eddi Solar Diverter
Automatically diverts surplus solar generation to the heat pump cylinder immersion heater
☀️ Solar diverter
~€260
View product →
🔋 Pair with battery storage — run your heat pump on solar
The most cost-effective way to run a heat pump in Ireland: pair with solar panels and a home battery. Solar generates free electricity during the day; the battery stores surplus for evening and overnight heat pump operation — reducing your annual electricity bill by 70–85%. Browse all batteries →
Huawei · Battery Storage
Luna2000 10kWh
Ireland's most popular battery — LFP, backup capable
🇮🇪 Most popular · LFP · Backup
~€4,200
10 kWh usable · View battery →
Pylontech · Battery Storage
US3000C 7.4kWh
Best value — compatible with most hybrid inverters
Best value · LFP · Multi-inverter
~€2,600
7.4 kWh usable · View battery →
BYD · Battery Storage
Battery-Box HVS 10.2kWh
High-voltage LFP — Fronius, SolarEdge, SMA compatible
LFP · Fronius · SolarEdge compatible
~€4,500
10.2 kWh usable · View battery →
💰 SEAI Solar + Battery grant: The SEAI Solar PV Home Grant covers up to €1,800 for solar panel installation. Combined with the heat pump grant (up to €12,500) and the EV home charger grant (€300), the maximum SEAI support for a complete solar + heat pump + EV system is approximately €14,600.
🚐 Complete your fleet — electric vans for your business
SEAI grants and ACA relief — tackle both in the same tax year. See all 205+ vehicles in the EV Vehicle Directory.
🌡️ Commercial heat pump + electric fleet — lower your two biggest costs together
SEAI van grants of €7,600 per vehicle — both technologies are Accelerated Capital Allowance eligible in the same tax year.
📊 Combined ACA: Commercial heat pump + electric vans — both eligible for 100% ACA write-off in year one. SEAI grants apply to both.
Featured electric commercial vehicles — SEAI van grant eligible
☀️ Pair with solar panels — maximise your SEAI grants in Ireland
A heat pump and solar panels are the most powerful renewable combination available to Irish businesses today. Your Nibe heat pump runs entirely on electricity — solar generates that electricity from your roof at zero cost. Both qualify for substantial SEAI grants. See the full Solar Panel Directory for all models available in Ireland.
💰 Commercial heat pump + solar — combined grant opportunity
Commercial properties installing both a heat pump and solar may qualify for multiple grant schemes simultaneously. Solar via SEAI Non-Domestic Microgen or TAMS III (agri, up to 60%); heat pump via SEAI Better Energy Communities or commercial heat pump grants. An Accelerated Capital Allowance (ACA) write-off may also apply to both technologies in year one, significantly improving cash flow and project ROI.
Why solar + heat pump for commercial buildings: A heat pump moves 3–5 units of heat for every unit of electricity consumed (COP 3–5). When that electricity is generated by your rooftop solar, the heating cost is near zero during solar generation hours. For hotels, schools and offices with daytime occupancy, solar generation and heating demand align closely — maximising self-consumption and minimising the payback period on both investments.
Browse commercial solar panels →
Featured solar panels for Irish homes
🏭
Commercial standard
LONGi
Hi-MO 7 580W
580W
23% eff.
N-type HPBC Bifacial
580W N-type bifacial — fewer panels per kWp, lower installation cost at scale. 23.0% efficiency — highest in the commercial directory
~€215/panel
View details →
⚡
Maximum output
Canadian Solar
TOPBiHiKu7 610W
610W
22.8% eff.
N-type TOPCon Bifacial
610W bifacial TOPCon — the highest wattage panel in Ireland. 15-year product warranty above the commercial standard. Ideal for large flat roofs and ground-mount
~€225/panel
View details →
🔋
🔌
🚿
Solar Battery Storage
Store surplus solar for evening use — maximises heat pump off-peak charging and reduces grid import by 40–60%.
Browse batteries →
EV Chargers
Charge your EV from surplus solar — myenergi Zappi Eco+ mode uses only solar generation, zero grid cost.
Browse EV chargers →
Hot Water Cylinders
Heat pump-compatible cylinders — solar immersion diverters can top up hot water using surplus solar generation.
Browse cylinders →
🔌 Complete system cost — what you actually pay
The heat pump unit is one component of a complete commercial energy system. Below is a breakdown of typical installation costs and the main grant schemes available in Ireland.
What's included in the install
🌡️ Heat pump outdoor unit (supply)
💧 Hot water cylinder (250L — included)
🔧 Installation & commissioning — ~€3,000–€8,000
📐 M&E design & heat loss assessment — ~€500–€1,500
🌡️ Controls, piping, wiring — ~€500–€800
💧 Commercial cylinder / buffer vessel — ~€800–€2,000
SEAI Grant
After grants
Supply price: ~€16,800
Full install: ~€26,000
SEAI grant (varies by scheme): − POA
TAMS III (agri, up to 60%): significant
Net cost depends on scheme — consult SEAI assessor
Add commercial solar
Solar-powered commercial heat pump — run heating on free electricity during the day. Multiple grant schemes can combine.
Commercial solar (e.g. 50kWp): ~€35,000–€45,000
TAMS III (agri, up to 60%): − up to €27,000
Non-Domestic Microgen (other): varies
ACA tax write-off: full cost, year 1
Effective solar cost (TAMS, agri): as low as ~€14,000–€18,000
⚠️ Grant process reminder: Apply at seai.ie and receive your Letter of Offer before installation begins. Starting work before the Letter of Offer permanently disqualifies the grant. Installer must be on the SEAI registered contractor list.
🏭 Your complete commercial energy solution
The S2125-16 16 kW forms the heating core of a complete commercial energy solution. Combined with solar, battery storage and smart scheduling, it transforms energy costs and reduces carbon reporting obligations.
🌡️
Commercial heat pump
Nibe S2125-16 16 kW — SEAI BEC grant for community buildings · SSRH annual payment for commercial/industrial · ACA year-1 write-off
☀️
Commercial solar array
Rooftop solar — TAMS III up to 60% (agri) · SEAI Non-Domestic Microgen · ACA year-1 write-off. Runs heat pump on free electricity during the day
🔋
Battery storage (optional)
Store surplus solar — powers heat pump overnight, reduces peak demand charges and improves project payback
🔌
EV charging infrastructure
Fleet or staff EV chargers — Type 2, CCS, DC rapid. List spare charging capacity on De Energy Hub for revenue
📊
Smart energy management
Schedule heat pump + EV charging around solar generation and time-of-use tariffs — reduce running costs by 20–30%
🚀
De Energy Hub integration
List EV chargers as bookable assets — turn your energy infrastructure into a managed revenue stream
💰 Total SEAI grants available: project-specific (see below) — Commercial grants are project-specific: TAMS III — up to 60% for qualifying agri buildings (solar + heat pump); SEAI BEC — percentage grant for schools, community buildings, GAA clubs; SEAI SSRH — annual support for commercial/industrial switching from fossil fuels; ACA — full equipment cost written off against tax in year one. Engage a SEAI-registered assessor before proceeding.
📲 Manage parking & charging
Download De Energy Hub app
Manage parking and EV charging across your commercial sites, or list your own spaces and chargers as bookable Hubs, all from De Energy Hub app.
📲 Get De Energy Hub app
Download De Energy Hub to manage parking and EV charging bookings across your sites, or list your own spaces and chargers as bookable Hubs.
Free to download. Manage parking and charging bookings and list your Hubs, all from your phone.
De Energy Hub
More power to you®.
🏫 Built for schools, community & public sector
Manage EV charging for staff, fleet and visitors, all in one app
Public sector organisations and schools with heat pump + solar installations can manage staff, fleet and visitor EV charging through a single bookable system. Set sessions free with promo codes for staff or charge visitors at Smart Energy rates, automatically balancing solar with the grid.
☀️ Pure Energy
🔄 Smart Energy
🚀 Boost Energy
🆓
Free sessions via promo codes
Issue free or discounted codes for staff, control who charges, when and at what cost
🔄
Smart Energy mode
Automatically draws from solar first, grid second, lower cost charging while reducing carbon footprint
📋
Full session history
Every session logged: kWh delivered, cost, duration and user, for reporting and billing
❓ S2125-16 16 kW — frequently asked questions for Irish buyers
🌡️ Also consider
Other commercial heat pumps in our Irish directory.