Afcool Heat Exchangers is the sole supplier of Wieland Onda Heat Transfer Solutions for Africa. Afcool specify and deliver Wieland Onda Heat Transfer Solutions to any refrigeration or airconditioning project in Africa. Please contact us for a quote for your HVAC&R project – big or small. Wieland Onda Heat Transfer Solutions is a leading Italian company specialising in the production of Heat Exchangers for air conditioning and refrigeration systems.