Congress of refrigeration ICR2019


Onda attended the 25 th IIR International Congress of Refrigeration ICR2019, held in Montreal from August 25 th to 31 th, 2019.

Onda wanted to actively give its contribution to the research against global warming. An experimental and theoretical work on low-GWP refrigerants evaporating in new low-charge and high-efficiency heat exchangers was presented. The scientific study was entirely conducted inside Onda by the R&D team with the support of the internal Laboratory of Heat Transfer; in particular, it deals with a direct comparison between R134a and R1234ze(E) in the new Onda Hybrid Film Evaporator.

The paper presented at ICR2019 is referred as:

Giuseppe Censi, Loris Giancotti, Andrea Padovan, (2019) “Experimental comparison of the heat transfer performance of R134a and R1234ze(E) in a hybrid film evaporator”. Proc. of the 25th IIR International Congress of Refrigeration, August 25-31, Montreal, Canada, pp. 2706-2713.

and can be found in the “ICR2019 Book of Proceedings” at the official IIR/IIF website ( or at the congress website (

If you are interested on receiving a free copy of the paper, please write to specifying in the object “ICR2019 Onda paper request”, kindly reporting your name and, if you want, your affiliation (if any).

30th anniversary of Onda



When celebrating 30th anniversary of ONDA, we should recall the most important pictures of its own hystory. Not the first product done, neither the first sales in export nor the the first subsidiary opened but the families, the babies born, the first loans of the houses, the first day of school for sons or the vacation we ever dreamed. Because what the Company has done in 30 years is .... to make dreams come true; the dreams of all families working in ONDA. The most beautiful thing is ... that all colleagues participated to make our dreams come true!...

Happy birthday ONDA...

Onda Nordic OY


Onda Nordic

ONDA S.p.A. announces, in date 12th of June 2019, the acquisition of the majority of WTT OY, a Finnish manufacturing company leader in district cooling and heating substations.

WTT is succesfully operating, with its own subsidiaries in Scandinavian and Baltic area, in the business since more than 10 years.
WTT will join ONDA Group and will change its name into ONDA Nordic OY. The Sinergy between ONDA Nordic OY and the mother Company ONDA S.p.A. (founded more than 30 years ago by Mr. Giuseppe Sella) will strengthen the skills of products/production development and sales effectivness.

Mr. Pasi Mäkinen will cover the position of Managing Director of the Company. Together with Mr Mäkinen and Elisa Sella (Financial Controlling of ONDA S.p.A.)
will join the new Board Directors of ONDA Nordic.