Rendamax B.V.: Development and production of high efficiency boilers from 22 kW up to 2 MW. http://www.rendamax.com Elco Heat ... ing Solutions: Sales of and service on boilers, heat pumps, air conditioning systems and solar energy. http://rendamax.elco.nl/ Rendamax B.V. is part of the Ariston Thermo Group: http://www.ariston.com/corporate/en/home read more