- The wood/coal boiler industry
- The solar heating industry for space heating & domestic water for both residential & commercial installations. Commercial installations include laundromats, restaurants, motels, etc.
- The off-peak heating & domestic hot water market. This includes new systems & repair and replacement parts for existing off-peak water storage systems for most hydronic manufacturers.
- The fire protection industry where on-site storage is necessary.
- The domestic cold water market for storage of water from slow wells & for storage of drinking water for emergencies.