Hawaii HB350 mandates solar water heater systems in new single-family homes, with exceptions for cost-prohibitive or impractical installations.

Hawaii HB350 amends existing law to require new single-family homes to include a solar water heater system that meets specific standards or an ENERGY STAR certified heat pump water heater. Exceptions are made if the system is cost-prohibitive based on a life cycle cost-benefit analysis or if installation is impractical due to space constraints or poor solar resources. In such cases, a variance can be approved by the Hawaii state energy office if an architect or mechanical engineer submits a variance application justifying the alternative installation.

Hawaii HB350 mandates solar water heater systems in new single-family homes, with exceptions for cost-prohibitive or impractical installations.

Hawaii HB350 amends existing law to require new single-family homes to include a solar water heater system that meets specific standards or an ENERGY STAR certified heat pump water heater. Exceptions are made if the system is cost-prohibitive based on a life cycle cost-benefit analysis or if installation is impractical due to space constraints or poor solar resources. In such cases, a variance can be approved by the Hawaii state energy office if an architect or mechanical engineer submits a variance application justifying the alternative installation.