Single Screw technology is the ultimate in compression.  

Thanks to the balance of forces on the main rotor and vastly oversized bearings for the satellites, compressors developed on the basis of Single Screw are particularly able to withstand high differential pressures.  The result is significantly lower maintenance frequencies than for other compressor technologies.

Vilter's Single Screw compressor is the basis for a successful investment in the decarbonisation of heat supply.

A CO2 transcritical heat pump is ideal when high-temperature hot water is required, particularly for DHW or industrial processes, with a safe, sustainable and regulatory-accepted fluid. Its strong point is the match between the cooling curve of the CO₂ and the heating of the cold water, which maximises efficiency.​

🌱 Environmental benefits

Natural refrigerant: CO₂ (R744) has a GWP = 1, so is virtually neutral in terms of the greenhouse effect compared with HFC/HFO.

Non-toxic, non-flammable (ASHRAE class A1), so safer to handle than ammonia (NH₃) or hydrocarbons.

Regulatory compliance: not affected by the progressive F-Gas bans in Europe.

⚙️ Technical benefits

High water outlet temperature: a CO2 transcritical heat pump can produce hot water up to 90-100°C (or even slightly higher with heat recovery), making it suitable for DHW (domestic hot water), the food industry, laundries, etc.  Excellent efficiency for DHW: thanks to its cooling profile in gas-cooler mode, CO2 is particularly suited to requirements where cold water is heated over a wide range (e.g. from 10°C to 70°C). *** Translated with www.DeepL.com/Translator (free version) ***

Compact exchangers: CO₂ has a high specific gravity, which reduces the size of compressors and exchangers compared with other fluids.

Good performance at low outdoor temperatures: the CO₂ retains a stable heating capacity even at -20°C outside, making it very interesting for cold climates.

Thermo-frigo pump: can simultaneously produce heat (DHW/process) and cold (e.g. cold rooms, process).  

💶 Economic benefits​

Attractive efficiency for domestic hot water: high COP for domestic hot water production, often higher than other heat pumps when water is heated to over 60°C.

Fewer regulatory constraints (unlike NH₃, which is subject to the Seveso directive at certain thresholds, or HFCs, which are subject to F-Gas quotas).

Long service life and easy maintenance: robust compressors, increasing availability of standardised components.

If required, we can put you in touch with a partner who will integrate the compression unit with a set of exchangers into your process.