Combi heater installation requires evaluating heating loads, domestic hot water demand, available space, fuel supply, water pressure, electrical requirements, and existing heating infrastructure. Proper equipment sizing is essential for delivering sufficient hot water while maintaining comfortable indoor temperatures.

Qualified technicians must complete heating, plumbing, fuel, ventilation, and electrical connections according to system specifications. Controls should be configured and operation thoroughly tested. Following manufacturer requirements and applicable codes helps ensure efficient performance, dependable heating, reliable hot water, and safe operation.