
Most air source heat pumps start to struggle when the weather turns. Nibe built its name on the opposite. This Nibe heat pump review looks at what you actually get for the money, where the brand is genuinely stronger than its rivals, and where it isn’t — whether you’re a homeowner or landlord in London, Brighton, Oxford, Southampton, Bristol or Cardiff.
Last updated: August 2026. Prices and grant values checked at time of writing.
Nibe was founded in Markaryd, Sweden, in 1952. That’s more than 70 years spent building heating systems for Nordic winters, which are a good deal harsher than anything the UK throws at us.
The company also runs a UK arm based in Derbyshire, so servicing and technical support are handled here rather than routed abroad. Installers work through Nibe’s Pro Partner network, which means the person fitting your system has been trained on it specifically.
That matters more than a marketing line. A heat pump lives or dies on its design and commissioning, and a brand with a mature UK installer base is easier to get right — and easier to get fixed.
| Category | What you get |
|---|---|
| Model lineup | F2040 (6-16kW), F2050 (6-10kW), F2120 (8-20kW), S2125 (8-20kW) |
| Peak efficiency | SCOP up to 5.0 at 35°C flow on the S2125 (A+++ rated); higher figures quoted on some sizes |
| Refrigerant | R290 on S2125 and F2120 (GWP of 3); older F2040 uses R410A |
| Max flow temperature | Up to 75°C on the S2125 — works with existing radiators |
| Sound output | Roughly 49-54 dB(A) on the S2125; Quiet Mark certified on selected models |
| Unit price | £3,600-£11,300 |
| Full install cost | £6,600-£16,300 before the £7,500 Boiler Upgrade Scheme grant |
| Yearly running cost | £700-£1,200 on a standard tariff; roughly £420-£630 on a heat pump tariff |
| Servicing | £150-£300 a year, with remote monitoring through myUplink |
| Ideal property | 150-350+ sq m, decently insulated |
| Warranty | 2 years standard, extendable to 5, 7 or 10 through approved installers |
It keeps working when it’s properly cold. The S2125 will still deliver a 65°C flow temperature with the outside air at -25°C. Plenty of heat pumps lose flow temperature long before that point, which means your radiators go lukewarm on the coldest night of the year.
Worth being straight about this, though: the UK almost never sees -25°C. What you’re really buying is headroom. On a -3°C morning in Oxford, a system designed for -25°C is working well within itself, and that’s where the comfort and efficiency come from.
It suits older houses. A 75°C maximum flow temperature on the S2125 means many homes can keep their existing radiators. Avoiding a full radiator replacement can save thousands and turn a disruptive job into a straightforward one.
The refrigerant is a genuine plus. The S2125 and F2120 both run on R290 (propane), which has a global warming potential of 3. Compare that with the R410A used in older units, which sits above 2,000. If a system leaks, that difference is enormous.
The app earns its keep. myUplink does more than let you turn the heating up from the sofa. It flags developing faults early, and catching a refrigerant or flow issue before it becomes a breakdown is often the difference between a £150 call-out and a four-figure repair.
It’s expensive. A full S2125 system can reach £16,300 before any grant. For a smaller home, the extra performance may never pay for itself against a cheaper unit.
You need the right installer. Nibe systems should be fitted by a Nibe-trained engineer, not a general heating firm. That narrows your options and can lengthen your wait.
Parts come from abroad. Most repairs are quick, but an unusual component can occasionally mean a longer wait than with a brand holding deeper UK stock.
The standard warranty is short. Two years as standard is below several rivals. Extensions to 5, 7 or 10 years are available through approved installers, but you have to ask for them and factor in the cost.
Insulation still decides the outcome. No heat pump gets close to its lab efficiency in a draughty house. If your loft and walls need work, spend there first.
| Model | Output | Home size | SCOP (35°C flow) | Max flow temp | Refrigerant | Unit price |
|---|---|---|---|---|---|---|
| F2040 | 6-16kW | 80-250 sq m | Around 4.8 | 58°C | R410A | £3,600-£6,100 |
| F2120 | 8-20kW | 150-350 sq m | 4.7-4.9 | 65°C | R290 | £7,500-£11,300 |
| S2125 | 8-20kW | 150-350 sq m | Up to 5.0 | 75°C | R290 | £9,000-£15,200 |
For most UK homes in 2026, the S2125 is the one to look at. It has the best efficiency, the highest flow temperature, the quietest operation and the modern refrigerant. The F2040 is the budget end of the range and still a sound unit, but its older R410A refrigerant is the main reason to think twice.
A 200 sq m home in Southampton fitted with a 12kW F2120 typically lands between £10,200 and £14,200 fully installed. Our engineers complete the heat loss survey and MCS paperwork within 3-5 days.
Running costs depend far more on your electricity tariff than on the badge on the unit. Take a well-insulated 250 sq m property in Cardiff using 3,000-4,500 kWh of electricity a year for heating:
Be wary of anyone promising you’ll halve your heating bill. Because electricity costs several times more per unit than gas, a heat pump on a standard tariff usually runs at a similar cost to a good gas boiler — sometimes a little less. The real savings come from moving onto a heat pump tariff, and they grow again if you add solar. Ask any installer to model your own numbers rather than quoting an average.
Yes. The Boiler Upgrade Scheme covers England and Wales, so every area we serve qualifies. As of 2026 it pays:
Your installer applies on your behalf and the money comes off the invoice before you pay. There’s no minimum EPC rating and no insulation requirement, though better insulation will always give you a better result.
This is the option most people overlook, and it’s often the one that changes the maths.
A heat pump turns electricity into heat at roughly four times the rate of a direct electric heater. Feed it with your own solar generation instead of grid electricity and the effective cost per unit of heat drops sharply. Add a battery and you can also shift consumption into cheap overnight windows.
This works particularly well for larger properties in South Wales and the South West, where roof space is rarely the limiting factor. The two systems complement each other rather than competing for budget.
One warning before the table: SCOP figures are only comparable at the same flow temperature. A SCOP measured at 35°C will always look better than one measured at 50°C, even on the same machine. Always check which one a brand is quoting.
| Comparison | Nibe’s edge | Where the rival wins |
|---|---|---|
| vs Cosy 6 | Higher output range and stronger efficiency at low flow temperatures | Cosy 6 is far cheaper and simpler for a small home |
| vs Aira | Wider model range for larger properties | Aira’s 15-year guarantee is much longer |
| vs Vaillant | Stronger low-temperature efficiency | Vaillant is quieter for tight urban plots |
| vs Panasonic | Better performance retention in cold weather | Panasonic is more compact for awkward retrofits |
| vs Daikin | Better durability in harsh winters | Daikin has a wider model range |
| vs Samsung | Stronger low-temperature efficiency | Samsung wins on design and aesthetics |
| vs Mitsubishi | Smarter cloud monitoring and diagnostics | Mitsubishi often has faster service response |
| vs Midea | Better build quality and cold-weather headroom | Midea is cheaper for budget buyers |
| vs Viessmann | Stronger cold-weather resilience | Viessmann integrates more easily with older systems |
| vs Worcester Bosch | Better cold-climate efficiency | Worcester has stronger brand familiarity |
| vs Hitachi | Higher SCOP and longer expected lifespan | Hitachi is strong for high-temperature hot water |
| vs LG | Better extreme-weather endurance | LG can be cheaper at comparable outputs |
Nibe scores well on Trustpilot, with most reviewers praising installation quality and the efficiency they see in practice. The recurring complaints are worth knowing about too: a minority report running costs higher than they expected, and a few mention waits for parts.
Which? has consistently rated Nibe favourably for efficiency and reliability in its heat pump comparisons, placing it among its recommended brands.
In our own experience across Southern England and South Wales, the systems that disappoint are almost always the ones that were sized or commissioned poorly — not the ones with the wrong badge on them.
Nibe is a strong fit if:
Look elsewhere if:
EE Renewables installs Nibe and other leading brands across Southern England, Greater London, the South West and South Wales — including London, Brighton, Oxford, Southampton, Bristol and Cardiff. As Octopus Energy’s award-winning number one installer for 2026, our heat pump installation team handles everything from the heat loss survey through to MCS certification and your grant application.
Still weighing up brands? Compare your options in our guide to the best air source heat pumps, or get in touch for a free, no-obligation quote.
Often, yes. The S2125 reaches flow temperatures of up to 75°C, which is close to what many older gas boiler systems ran at. A heat loss survey will confirm it room by room, and you may still need to upsize one or two radiators, but a full replacement is frequently avoidable.
Typically 15-20 years with annual servicing, which is longer than most gas boilers manage. Servicing costs £150-£300 a year and is usually a condition of keeping any extended warranty valid.
It does more than remote control. myUplink adjusts heating output using weather forecasts and sends alerts when performance starts to drift, which is useful for households across Greater London with irregular occupancy patterns who don’t want to keep adjusting settings by hand.
Yes. With additional zone controllers, a Nibe system can hold different temperatures in different parts of the house — something larger Bristol properties often need. It should be configured by a qualified installer, as zoning done badly will hurt your efficiency rather than help it.
The S2125 runs at roughly 49-54 dB(A), and selected Nibe models carry Quiet Mark certification. In practice that is quieter than most fridges at a few metres away. It matters for terraced and semi-detached homes in London and Brighton, where planning rules cap the noise a unit can make at your neighbour’s boundary.
Most installations are completed in two to four days on site, depending on whether radiators or the hot water cylinder need changing. Before that, allow a few days for the heat loss survey and MCS paperwork — our team turns this around in 3-5 days.
The current S2125 and F2120 use R290 (propane), with a global warming potential of just 3 — among the lowest available. The older F2040 uses R410A, which has a far higher GWP. If environmental impact is a priority, choose from the R290 models.
Nibe products hold MCS certification, which is what makes them eligible for the Boiler Upgrade Scheme, and they comply with EU ErP energy labelling rules. Your installer also needs to be MCS registered for the grant to apply — worth checking before you sign anything.
Built-in surge protection and automatic restart mean the unit recovers on its own once power returns, with no manual reset needed. That’s a practical advantage in rural parts of the South West where supply can be less consistent than in town.
Paired with solar and battery storage, yes — partial off-grid operation is achievable and suits remote South Wales properties well. Full independence through a British winter is a different matter, and depends entirely on sizing your array and battery correctly from the start.