API Energy^TM Semi-Storage Calorifiers are designed to meet high DHWS (domestic hot water service) demands on a compact and cost effective way. Hot water is available within a few minutes of a cold start, temperature control is excellent and primary input power requirement is much lower than for instantaneous water heaters.

API Energy Semi-Storage Calorifiers semi-storage calorifiers using the following standard materials:

• Solid Copper
• Copper-Lined Steel
• Galvanised Steel
• Stainless Steel
• Glass/Polymer Lined Steel