Use of Ionized models, using the water heater on low power and using filters on the cold water inlet.

This depends on the water composition, however generally for standing pilot models once every two years and for Ionized models once every four years.

• Instant hot water
• Continuous hot water
• Low gas consumption
• Less space required
• 100% hygienic hot water

Based on the Iranian standards and building guidelines as well as the model requirements the chimney size for various models are as follows:

• For 8 and 10 Liter models, 10 cm chimney diameter
• For other models with the exception of forced flue, 15 cm chimney diameter

Other factors may affect the reduction in chimney size requirements, however these can only be approved by a certified BIG servicemen and after an on-site consultation.