SB 748 amends Hawaii’s existing law on water-heating requirements for new single-family residential construction. Under current law, a building permit for a new single-family dwelling generally cannot be issued unless the home includes a qualifying solar water heater system, unless a variance is approved. This bill broadens compliance options by allowing an ENERGY STAR certified heat pump water heater to satisfy the requirement, and it updates the statutory title to reflect that the law applies to water heater systems more generally rather than only solar water heaters.
The bill also revises the variance process and related definitions. It clarifies that a variance may be sought when a solar water heater is impracticable because of poor solar resource, or when a heat pump water heater is impracticable because of interior or exterior space constraints. It retains the cost-prohibitive and renewable-energy-substitution pathways, and it modifies the demand water heater exception to require an ENERGY STAR certified demand water heater device and a supporting life cycle cost-benefit analysis. The bill defines “heat pump water heater” and “demand water heater” for purposes of the statute and takes effect upon approval.
Impact
SB 748 would amend section 196-6.5, Hawaii Revised Statutes, which governs water-heating requirements for building permits for new single-family dwellings. Its practical effect is to expand the set of technologies that can satisfy the state’s residential water-heating mandate, potentially increasing flexibility for builders and homeowners while preserving the state’s energy-efficiency and renewable-energy policy goals. The bill would also refine the criteria for obtaining a variance and update statutory terminology to include heat pump water heaters alongside solar systems.
Sentiment
The available context suggests generally favorable treatment of the bill, with no recorded opposition in the provided materials. The bill was introduced as an energy measure and referred to the Senate Education and Ways and Means committees, and the committee report description frames it as an expansion of acceptable water-heating systems rather than a rollback of the existing requirement. No vote tally or transcript is provided, so the broader debate cannot be assessed from the record here.
Contention
The main policy issue appears to be how to balance Hawaii’s long-standing solar water-heating requirement with added flexibility for homes where solar installation is impracticable or where heat pump systems are more feasible. Potential points of contention include whether expanding compliance options could weaken the state’s solar adoption mandate, how strict the variance standards should be, and whether the ENERGY STAR and life-cycle cost requirements are sufficient to ensure energy savings. The bill’s references to space constraints, poor solar resource, and cost-benefit analysis suggest that builders, engineers, and energy regulators are the likely stakeholders in any debate over implementation.