A heater replacement used to be simple. A pool pump swap was once routine.

In California, neither simplicity nor routine is guaranteed.

Across the state, pool and spa professionals may discover that jobs long treated as basic maintenance can now trigger energy-code reviews, permit complications, and unexpected equipment requirements.

The reason isn’t a sudden ban or a surprise rewrite of the rules. It’s the way California is now applying and enforcing its existing energy standards — especially for pool heaters, pumps, and controls — and the ripple effects will be felt throughout the industry.

For technicians working in California, the message is becoming clear: Energy compliance now plays a role in far more service calls than it did just a few years ago. And for swimming pool and spa service professionals elsewhere, this pattern is familiar.

California often acts as the proving ground for energy policy, with similar concepts eventually appearing in utility programs, state codes, and national standards.

Under Title 24, primary pool heating must come from a heat pump, solar, or other renewable energy. A compliant pool pump includes the pump type, the run schedules, the speed settings and integration with controls. Heaters

The most significant change pool professionals see today involves how pool heating is evaluated under California’s Title 24 energy code.

Under the current Building Energy Efficiency Standards — which took effect January 1, 2023 — newly constructed pools and pools being heated for the first time can no longer meet prescriptive energy compliance using a gas-only heater as the primary heat source.

Instead, the prescriptive baseline assumes that primary heating will be provided by a heat pump, a solar thermal system, or another renewable-supported approach.

Gas heaters are still legal and still widely sold, but they are no longer treated as the automatic, default solution for permitted projects.

In many cases, gas heaters are now limited to supplemental or backup roles, unless the project follows a performance-based compliance pathway that demonstrates equivalent or better overall energy performance.

This framework has technically been in place for several years. What makes it “new” now is enforcement. Building departments and plan reviewers are applying the rules more consistently, and inspectors are increasingly asking how a heater installation complies with Title 24 when gas is involved. For service professionals, that means heater jobs that once seemed straightforward can now require explanation, documentation, or design changes.

Pumps

Pump requirements haven’t changed as dramatically as heater requirements, but the margin for error has narrowed.

Most pool professionals already know that single-speed pumps largely disappeared from the California market years ago due to efficiency standards under Title 20. Variablespeed pumps dominate because they are required for most new pools and many permitted replacements.

What has changed is how often pump work is treated as permittriggering. Full pump replacements, changes in horsepower, electrical modifications, or the addition of automation are increasingly viewed as regulated work. Once a permit is pulled, current Title 24 requirements apply, including how the pump is controlled, scheduled, and operated.

In practical terms, installing a compliant pump model is no longer enough. Inspectors may look at run schedules, speed settings, and integration with controls, not just the nameplate.

Title 20 vs. Title 24

Much of the confusion in the field comes from misunderstanding the difference between Title 20 and Title 24. They often get mentioned together, but they regulate entirely different parts of the job.

Title 20 controls what equipment can be sold in California. It is part of the state’s Appliance Efficiency Regulations and applies before equipment ever reaches a jobsite. Pumps, motors, heaters, pool controls, lights, and certain power supplies must be tested, certified, and listed with the California Energy Commission (CEC). If a product is not listed, it cannot legally be sold or offered for sale in the state — regardless of how it is installed or how well it performs.For service companies, Title 20 determines:

• What equipment distributors can stock.

• What models can be ordered.

• What can legally be installed at all. Title 24 controls how compliant equipment must be installed and operated when work is permitted. It is part of the California Building Energy Efficiency Standards and enforced by local building departments. Title 24 governs system design, control logic, scheduling, and overall energy use. It is not concerned with the origins of the equipment — but how it is used.

Title 20 is about legality. Title 24 is about compliance.

The two overlap, but they are not interchangeable. Title 20 decides what you can buy. Title 24 decides what you must do with it.

Pool Controls and the Flexible Demand on Appliance Standards

One area quiet ly gaining importance is pool controls.

Under Title 20, California has adopted Flexible Demand Appliance Standards (FDAS) for newly manufactured pool control systems. These standards apply to certain controls sold in the state and require features such as: • Default operating schedules.

• The ability to support energy load shifting.

• Communication capability to support future demand-response programs (with customer participation).

These rules are aimed primarily at manufacturers, but service professionals are often the ones who:

• Install the controls.

• Program schedules.

• Explain system behavior to customers.

A control system may be fully legal to sell under Title 20, but improper setup or disabled scheduling can still raise red flags under Title 24 when a permit or inspection is involved. In other words, controls are no longer passive accessories — they are part of the compliance picture. The enforcement climate is new, not the standards.

California is applying its energy rules more deliberately as part of a broader push toward efficiency, electrification, and grid management. For pool and spa professionals, that means fewer assumptions, more documentation, and closer scrutiny when permits are involved.

This matters beyond California. History suggests that what starts as a California requirement often becomes a model for other states and utilities. Understanding these rules now offers a preview of where the broader industry may be headed.

Field Guide For Heater Installations

Gas heaters are not banned, but are no longer the default primary heat source under prescriptive compliance for new or newly heated pools.

Heat pumps, solar thermal systems, or renewable-supported approaches are increasingly required as primary heat.

Gas heaters may still be used:

• As supplemental or backup heat.

• Under performance-based compliance, with documentation.

Like-for-like replacements of existing gas heaters may stay outside Title 24 — unless the scope of work or permitting triggers compliance.

Field Guide For Pump Installations

Variable-speed pumps remain required for new pools and most permitted replacements.

Permit triggers commonly include:

• Full pump replacement.

• Horsepower changes.

• Electrical or wiring modifications.

• Added automation or control systems.Once permitted, inspectors may verify:

• Pump schedules.

• Speed settings.

• Integration with controls or automation.

Controls and Automation

• Pool control systems sold in California must meet Title 20 FDAS requirements where applicable.

• Default schedules and operational settings matter.

• Controls may be reviewed during inspection as part of Title 24 compliance.

Permits Change Everything

• Internal repairs usually stay outside Title 24.

• Equipment replacements and system modifications often do not.

• Once a permit is pulled, current code applies — not the code in effect when the pool was built.

Conclusion

California pool professionals are working in an environment where energy compliance reaches deeper into everyday service work than ever before. Gas heaters haven’t disappeared, and pumps haven’t been reinvented — but the assumptions that once made these jobs routine no longer hold. For those outside California, this is more than a local story. It’s a reminder of how quickly energy policy can reshape the pool equipment landscape — and a glimpse at what may be coming to your state next.