2752140001 - Solar heaters (collectors) - 30 Manufacturer
2752140002 - Gas-fired non-electric instantaneous water heaters (non-electric water heaters) - 9 Manufacturer
2752140003 - Non-electric water heaters (storage water heaters) - 6 Manufacturer
2752140099 - Other non-electric instantaneousstorage water heaters - 1 Manufacturer