+421 2 6544 2661
+421 2 6544 2661
Valve heat exchangers

The company Roen Est has started its production of heat exchangers in 1983. One of the main company’s orientations is the production and delivery of finned packed heat exchangers, air coolers, external condensers and dry coolers. Our production is ready to offer the customers the following configurations of materials and products:


- Pipes: copper / aluminium, plain / ribbed

- Fins: finely rippled / turbo fins with cut-outs

- Material of plates: aluminium, aluminium with epoxide coat, aluminium with hydrophilic coat, copper

- Frame: aluminium, galvanized plate, stainless steel

- Fans (sucking/blowing): Elco, EBM, Ziehl Abegg, Rosenberg, also special ATEX, EC, IQ.


Air coolers for refrigerating and freezing chambers for all types of Freon and CO2 produced in several ranges of models:


SD (small commercial coolers with one sided exhaust)

Capacity: 0,28 – 12,1 kW

Spacing of plates: 3mm, 4mm, 4/8mm, 6mm

Ventilators: 200mm, 250mm, 300mm

Sheet metals: aluminium and painted aluminium


DD (under-ceiling coolers with two sided exhaust)

Capacity: 1,20 – 98,70 kW

Spacing of plates: 3mm, 4,5mm, 6mm, 8mm, 10mm, 12mm

Ventilators: 250mm, 350mm, 500mm, (4P and 6P)

Sheet metals: aluminium and painted aluminium


CC (commercial range of cubic coolers)

IC (industrial range of cubic coolers)

FC (cubic coolers range for stocking of fruits)

Capacity: 1,00 – 164,80 kW

Spacing of plates:

Commercial range CC: 250mm, 300mm, 350mm

Industrial range IC: 450mm, 500mm, 630mm

Sheet metals: painted aluminium



External condensers and dry coolers


We offer also a very large range of air cooled external condensers and dry coolers.


The following executions are possible:


in horizontal "H" or in vertical "V" execution

with copper pipes plain or internally ribbed to increase the capacity

aluminium or copper plates of different forms (mild wavy and turbo plates)

capacity output from 6 kW to 942 kW

used fans Ziehl-Abegg, Rosenberg single-phase 230V, 50-60 Hz and three-phase 400V-50 Hz, protection grade IP 54

All products are conformed with respective norms of EU.




Capacity: 0,57 – 6,90 kW

Plates: 3mm + on special order also 5mm

Fans: from 172mm to 300mm



Capacity: 4,00 – 53,00 kW

Plates: 2,1mm,

Pipes: plain/ribbed

Fans: 350mm



Capacity: 14 – 626 kW (x 2)

when executed in 2 stacked-up ranges

Plates: 2,1mm,

Pipes: plain/ribbed

Fans: from 450mm to 910mm



Capacity: 202 – 942 kW

Plates: 2,1mm,

Pipes: plain/ribbed

Fans: 800mm and 910mm



Capacity: 10 – 900 kW

Plates: 2,1mm + on special order also -1,8; 2,3; 2,5 mm

Fans: from 350 mm to 910mm

Pipes: plain


Special executions of condensers and dry coolers and accessories


-reverse execution of condensers

-plates with protecting coat, eventually copper

-multi-circuit execution

-sheet metal from stainless steel up do ventilator’s dimension of 630mm

-higher execution of cooler’s supports

-fans with regulator of revolution, service switch, new cabling, for explosive shops