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FeTu heat pump

Single Stage - Steam Raising - Industrial

Ultra Efficient High Temperature
Heat Pump

Key Benefits

Unrivalled Efficiency

The drastic increase in volumetric and Isentropic efficiency of this unique (patented) compression technology accounts for the incredible performance boost gained when upgrading or installing a Heat Pump based on FeTu compressor technology.

Volume Ratio up to 10:1

Introducing a single-stage volumetric compression ratio of 10:1 drastically increases our temperature lift capability when compared to conventional scroll (3:1) or screw-based (5:1) systems. The actual Built-In Volume Ratio (BIVR) of a FeTu compressor is 500:1.

High Single-Stage Temperature Lift

This high compression ratio capability means a heat pump with a FeTu compressor can achieve single-stage temperature lifts of 180°C* (fluid and pinch point dependent), whilst maintaining COP levels above 2:8.

Steam Raising

The unique FeTu combination of high efficiency and high-temperature lift means our heat pump offers a commercial first for high-temperature applications such as single-stage steam raising, ending natural gas's dominance.

Compact, Quiet & Stable

This is a diminutive scheme which is easy to integrate. A self-contained skid-mounted or containerised solution. Offering a quiet, reliable, low-loss compression system which is scalable, compact & cost-effective.

Environmentally friendly

This is an environmentally ‘clean’ technology which is 100% recyclable, with preferred options of non-fluorinated organic fluids with near-zero (1 or less) Global Warming Potential (GWP) and Zero Ozone Depletion Potential (ODP).

60°C

At COP4

180°C

Single-stage lift

100%

Recyclable

How it works

Heat Input
Compression
Heat Output
Expansion

Heat is absorbed from a thermal energy source (air, water, ground, waste) through the heat input heat exchanger causing the system’s internal fluid flow to boil into a low-pressure gas, at which point it then travels to the compressor.

Illustration of cold air

Air

Illustration of cold water

Water

Illustration of heat coming out of the ground

Ground

Illustration of an industrial unit

Waste Heat

The low-pressure gas from the heat input exchanger enters the highly efficient FeTu compressor, where our unique mechanical compression process increases its energy, turning it into a hot, high-pressure gas which then passes to the heat output exchanger.

Electrical Power Input

Following the compression process, the hot gas enters the heat output exchanger, as does the counterflow material requiring heating. The hot gaseous fluid within the heat pump circuit then condenses and in the process transfers heat to the external fluid media, thereby increasing its entropy and enthalpy, ultimately raising its temperature.

Illustration of hot air

Air

Illustration of hot water

Water

Illustration of steam rising

Steam

Illustration of an industrial unit

Process Heat

Within the heat pump circuit, the cooled liquid from the condenser enters an expansion valve where it expands from a high-pressure liquid to a lower-pressure 2-phase (saturated gas) fluid, significantly dropping in temperature due to a Joule-Thomson effect.

Performance Comparison

*01 - Double COP at the same temperature lift *02 - Double temperature lift at same COP

In the heat pump world, efficiency and temperature lift capability are counter-dependant variables. Lift is the extent to which the output temperature has increased over that of the thermal input energy source. Efficiency is the measure of thermal energy output as a function of the electrical energy used, known as Coefficient of Performance (COP).

Heat Pumps are said to lose commercial viability below a COP of 2.8 (MCS standard). For a conventional Heat Pump, this occurs at a 45°C temperature lift. When directly compared under the same conditions, a FeTu Heat Pump retains its commercial viability beyond 90°C temperature lift.

The graph (right) shows a direct comparison between a state-of-the-art heat pump (as of June 2025) and the performance of a FeTu heat pump, both based on an air source temperature of 2°C, in accordance with BS-EN-14511-3.

Liberate yourself from Natural Gas

For the first time in history, the combined attributes of the FeTu compression technology bring the efficiencies associated with a single-stage compression process into the world of high-temperature heat pumps. This development is both topical and critical for industrial and commercial businesses seeking to migrate cost-effectively away from natural gas.

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Market Sectors

Our versatile Heat Pump solutions integrate seamlessly in addressing the many varied economical pain points for industrial heating applications, especially at the high temperatures necessary for steam production. Contact us to find out how our product and technology can benefit your profitability whilst offering a viable and environmentally kinder alternative to natural gas.

Thermal reheating pipework

Thermal upgrade (Reheating)

Steam generation units

Steam Generation

Process heating units

Process Heating

Multiple space heating unit

Space Heating

Three men interacting with FeTu's heat pump
FeTu Roticulate team stood outside of their offices
FeTu machine
FeTu employees holding award
FeTu winning award at IOP Business Awards

Who we are

FeTu was established in 2016 based in West Yorkshire, we are an innovation driven enterprise that has created a revolutionary ‘green’ energy device targeting carbon reduction across a broad range of systems and industries.

FeTu is the epitome of deep-impact climate technology, both ‘disruptive’ and ‘enabling’; a versatile ‘continuous positive displacement’ machine that is an inherently cost-effective, highly efficient, fluid displacement system. FeTu liberates energy.

Our multi-award-winning business was most recently honoured by the Institute of Physics, winning the Business Innovation Award in November 2024.

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