Water cooled chillers & heat pumps

EUROVENT Certified - Made in Italy

RHOSS a conscious choice

Behind every RHOSS chiller there is over 52 years experience, backed up by one of the largest EUROVENT Research and Development centres in Europe.

The air cooled range has been developed to achieve the highest efficiency covering a capacity scope starting at 5 kW up 1.7 MW (EUROVENT conditions).

RHOSS chillers and heat pumps have built an enviable reputation for quality, low noise levels, corrosion resistance and high efficiency.

Sub Products Heading



  • From 5kW to 1.7MW (EUROVENT conditions)


  • Scroll

  • Inverter Scroll

  • Screw

  • Inverter Screw


  • R410A, R134A, R1234ZE, R513A, R32, R454B


  • Free cooling

  • Remote condensing

  • Heat recovery (Partial and total)

  • Glycol cooling up to -8°C (Standard units)

  • Plate heat exchangers & Shell & Tube heat exchangers

  • Fully hydronic kits (Single pump, double pumps, expansion tank, buffer tank)

  • Variable primary flow by RHOSS

  • And much more… (Low noise level, noise reduction software, inbuilt master/slave, HLI…)



RHOSS participates in the Eurovent certification programmes for chillers, heat pumps and fan coils, according to the regulations: EN 14511 - EN 9614 - EN 1397

LEED certification - Leadership in Energy & Environmental Design

RHOSS participates in the certification protocol of LEED buildings. The international system is based on the entire building life cycle from design and construction to management and maintenance.

ISO 14001:2015 Certification

RHOSS Spa supplies quality goods designed for environmental comfort.

ISO 9001:2015 Certification

RHOSS Spa provides quality goods designed for environmental comfort, making them available and accessible thanks to the advanced technological and organisational level achieved, and, above all, to the committed, reliable and dedicated approach that RHOSS personnel take to their job every day.

RHOSS Efficiency advantage
RHOSS Efficiency advantage

The low consumption technology (Predictive)

Adaptive Function Plus is an innovative predictive control software, patented in exclusive by RHOSS, developed with the collaboration of the Departments of Technical Physics and Computer Engineering of the University of Padua.

The new logic allows the chiller to collect information from the system regarding its load and inertia, and to adjust and optimize the operating parameters in order to reduce the energy consumption of chillers and heat pumps.

The energy requiered, only when requiered

In the air conditioning systems, the chillers only operate at full load for a small number of hours while they work at partial load for most of the season: therefore they must be designed and managed in a way that their energy consumption is as low as possible during the entire period of use.

Adaptive Function Plus works on the set-point value, allowing to increase the unit efficiency and to reduce the energy  consumption, compared to chillers and heat pumps of the same capacity and with traditional control logic.

The energy consumption saving reaches 36% in the winter and 18% in the summer!


RHOSS is a company specialised in the design and manufacture of products and systems for air conditioning and air handling.

Founded in 1968, it immediately became the leader in the sector of steel boilers for domestic heating.

It entered the world of air-conditioning in 1971 with the production of fan coils and subsequently with cooling units.

For more than 50 years, RHOSS has been a guarantee for innovation, quality and top level service. This is what makes us an ideal partner for HVAC (Heating, Ventilation and Air Conditioning) system specialists.

RHOSS growth and development is an evolution that combines investments and projects in order to make the company a point of reference also for international markets.

Our renewal has followed market development and customer needs, in particular offering highly efficient products and systems that are in line with the requirements of the most modern Green Buildings.




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