NIBE introduced the S1156 and S1256 ground source heat pumps, the manufacturer announced on 9 February 20241. The two models were listed on the company's news page under the heading "Introducing the NIBE S1156 and S1256 Ground Source Heat Pumps"1.
The announcement sits within a wider run of NIBE product and partnership news. The same news listing records that the S1256 won at the Energy Awards on 1 October 2024, under the heading "NIBE S1256 wins at the Energy Awards"1. No technical specification, output range, price or efficiency figure for either model appears in the material published on the news page1.
Ground source heat pumps take heat from the ground, usually through a borehole or a horizontal loop, and use it to run a home's heating and hot water. The site's guide to ground source heat pumps sets out how the technology works, and the guide to ground loops and boreholes covers the ground array that such a unit depends on. Because the ground temperature stays relatively stable through the year, ground source units are often described as performing more consistently than air source models in cold weather, a comparison covered in the guide to whether ground source heat pumps are better in cold weather.
NIBE is one of several manufacturers active in the UK ground source market. The site carries separate pages on IVT ground source heat pumps, Kensa ground source heat pumps and Thermia heat pumps, as well as a page on the CTC EcoHeat 300. For homes that cannot accommodate their own ground array, shared ground loop networks allow several properties to draw on one communal ground loop.
Why it matters for households
A ground source heat pump is a bigger undertaking than a boiler swap. It needs outside space for a borehole or loop, and the ground works are usually the largest single cost in the project. That means the arrival of new models matters less on its own than what the models offer in terms of output, size and suitability for a given property, and none of those details have been reported here1.
For a household weighing up energy independence, the practical question is whether a ground source unit can meet the home's heat demand at a lower running cost than the alternatives, and whether the ground array can be installed on the plot. The manufacturer's own news page does not give figures that would answer either question for the S1156 or S12561. The wider heat pumps guide and the heat pumps hub cover the general principles, and the NIBE heat pumps page covers the brand's UK range.
What happens next
No launch date, availability date or pricing for the S1156 and S1256 has been reported1. The news listing shows the S1256 going on to win at the Energy Awards on 1 October 20241.
Sources1 cited
- NIBE News | NIBE, nibe.eu