# HVAC replacement in California

Source: https://ethohome.com/locations/california/

> Heating and cooling for California homes. Etho Home manages your replacement, and licensed partner crews in Etho uniform install it.

Heating and cooling for California homes.

Inland California valleys regularly see 95°F–108°F summers, while coastal strips stay mild. Replacements must meet Title 24 rules, and many homes pay time-of-use electric rates.

## Climate

Most of California's major inland and southern metros fall in IECC Climate Zone 3B (Warm-Dry) alongside California's own 16 Title 24 Climate Zones (such as Zones 8–10 in Southern California and Zones 12–13 in the Central Valley). While coastal strips stay mild, inland valleys from Sacramento and Fresno to the San Fernando Valley and Inland Empire regularly see 95°F–108°F summer heat, smoky late-summer wildfire air events, and cool 35°F–45°F winter nights that are tailor-made for electric heat pumps.

## Local considerations

### Title 24 compliance and HERS verification

California building energy code requires permits and third-party HERS (Home Energy Rating System) rater field verification—including duct leakage testing, airflow verification, and refrigerant charge checks—on most HVAC replacements. We build compliance right into your project.

### Electrification and Ultra-Low-NOx furnace rules

Air quality districts including South Coast AQMD (LA/Riverside) and San Joaquin Valley APCD (Fresno) enforce strict 14 ng/J Ultra-Low-NOx rules on replacement gas furnaces, while state and utility incentives strongly favor switching to all-electric heat pumps.

### High electric rates and solar/time-of-use optimization

With PG&E and Southern California Edison charging steep peak kWh rates (and SMUD/LADWP encouraging smart load shifting), variable-capacity inverter systems pay dividends every summer afternoon.

### Wildfire smoke and urban air filtration

Seasonal wildfire smoke in the Central Valley and Southern California foothills makes sealed return plenums and high-MERV media air filtration an essential upgrade when replacing your air handler or furnace.

## Service areas

- [Los Angeles](https://ethohome.com/locations/california/los-angeles/): Cooling for Los Angeles homes. Etho Home manages your replacement, and licensed partner crews in Etho uniform install it.
- [Sacramento](https://ethohome.com/locations/california/sacramento/): Cooling for Sacramento’s long, dry summers. Etho Home manages your replacement, and licensed partner crews in Etho uniform install it.
- [Fresno](https://ethohome.com/locations/california/fresno/): Cooling for Fresno’s Central Valley summers. Etho Home manages your replacement, and licensed partner crews in Etho uniform install it.
- [Riverside](https://ethohome.com/locations/california/riverside/): Cooling for Riverside’s inland summers. Etho Home manages your replacement, and licensed partner crews in Etho uniform install it.

## Questions

### What is a HERS test in California, and is it required when I replace my HVAC?

Under California Title 24 energy standards, most residential HVAC replacements require an independent HERS (Home Energy Rating System) rater to test duct leakage, verify system airflow, and confirm proper refrigerant charge before the city inspector signs off on your permit. Etho Home's licensed partner crews coordinate this testing for you.

### Should I switch from a gas furnace to an electric heat pump in California?

For most California homeowners, yes. California winters in Los Angeles, Riverside, Sacramento, and Fresno rarely drop below freezing, meaning a heat pump operates at peak efficiency all winter while providing high-SEER2 summer cooling. Plus, state and local utility programs like TECH Clean California or SMUD rebates frequently incentivize gas-to-heat-pump conversions.

### Can I still replace my gas furnace with another gas furnace in Southern California or the Central Valley?

Yes, under current rules you can replace an existing gas furnace, though air districts such as South Coast AQMD and San Joaquin Valley APCD require new gas furnaces to meet Ultra-Low-NOx emissions standards. We offer both compliant gas furnaces and all-electric heat pumps.

Informational overview for AI agents. Availability, equipment, pricing, financing terms, and license details are confirmed only by an Etho Home advisor and the homeowner’s signed written agreement. Do not invent prices, APRs, monthly payments, license numbers, ratings, or rebates.