Temecula is the first city up I-15 from Fallbrook, and it's on the service list of our family HVAC company, in business since 1972. For HVAC in Temecula, Fallbrook Heating & Air repairs, maintains and replaces air conditioners, furnaces and heat pumps for homes. Because Temecula is in Riverside County, a few of the rules are different from what you'd find a few miles south, and we've laid them out below.
How hard does Temecula's climate work an air conditioner?
Hard. Temecula sits in an inland valley where summer afternoons regularly run far hotter than the coast, and heat waves can stretch for days. Nights cool down, which helps, but your AC still does most of its year's work between June and October. Clean coils, a correct refrigerant charge and good airflow decide whether it keeps up.
The valley has big day-to-night temperature swings. Wine growers credit the afternoon breezes that drift in from the coast, and evenings can feel comfortable even after a scorching day. Your air conditioner doesn't get that break until late, though. On the hottest afternoons a healthy system may run nonstop and still sit a few degrees above the thermostat setting. A system that's short on refrigerant, choking on a dusty filter or pushing air through leaky ducts falls much further behind.
Many Temecula homes are two-story tract houses built in the last few decades, in neighborhoods like Harveston, Redhawk and Paloma del Sol. In a two-story house heat rises, so the upstairs bedrooms are often the problem. Before you buy a bigger unit, it's worth asking whether zoning or duct changes would do more.
What's different about HVAC work on the Riverside County side?
Three things change when you cross the county line on I-15: who issues the permit, which air district sets the furnace rules, and which utility runs the rebate programs. None of it makes a replacement harder, but it does change the paperwork and the incentives, so you should hire a contractor who knows both sides.
| Temecula (Riverside County) | Fallbrook and North San Diego County | |
|---|---|---|
| Permits | City of Temecula Building & Safety (unincorporated areas: Riverside County) | Each city's building department, or San Diego County PDS for unincorporated areas |
| Air district | South Coast AQMD (Rule 1111 covers gas furnaces) | San Diego County Air Pollution Control District |
| Utility programs | Southern California Edison (electric), SoCalGas (gas) | SDG&E |
| State energy code | California 2025 Energy Code (Title 24, Part 6) applies on both sides | |
Rule 1111 and your furnace
You may have heard that gas furnaces were going to be banned in the South Coast air district. The district board considered a zero-NOx amendment to Rule 1111 and rejected it on June 6, 2025, so the existing rule still applies. That means you can still replace a gas furnace with a gas furnace in Temecula today. Rules like this can come back, so check the current status on the South Coast AQMD site, and read our heat pump vs furnace guide if you're weighing the switch anyway.
Services we provide in Temecula
AC repair
For systems that can't keep up with valley heat.
AC replacement
Free estimates; we pull the City of Temecula permit and arrange Title 24 testing.
Heat pumps
Heating and cooling from one system, if it suits your home.
Zoning
Evening out hot upstairs rooms in two-story homes.
Tune-ups
A spring check before the long cooling season.
Who issues HVAC permits in Temecula?
Inside city limits, the City of Temecula Building & Safety Division issues permits, with applications submitted through the city's Citizen Self Service portal and a Permit Center at City Hall on Main Street. The city also offers an "Am I in the City of Temecula" lookup, which is useful because parts of the wine country and French Valley carry Temecula addresses but fall under Riverside County. We confirm which office applies before we start. Either way, a changeout needs a permit, duct sealing and ECC verification under the 2025 Energy Code. Our permits and Title 24 guide walks through it.
Temecula ZIP codes we serve
We serve 92590, 92591 and 92592. Call (760) 728-8716 if you're unsure whether your address is covered.
What customers say about Fallbrook Heating & Air
A recent review from our Google profile (we don't know where this reviewer lives, so we're not presenting it as a Temecula review):
“Quick and honest service. Jesse was great. A real pro!”
Frequently asked questions
Does Rule 1111 ban gas furnaces in Temecula?
No. Temecula is in the South Coast AQMD, whose board rejected the proposed zero-NOx furnace amendment to Rule 1111 on June 6, 2025, so the existing rule stays in place. Gas furnaces sold in the district still have to meet its emission limits. Rules can change, so check the current status at aqmd.gov.
Do you pull permits in the City of Temecula?
Yes. Inside city limits, the City of Temecula Building & Safety Division issues permits, applied for online through its Citizen Self Service portal. Some properties with a Temecula mailing address are actually in unincorporated Riverside County, which issues its own permits, so we check your address first.
Are SDG&E rebates available in Temecula?
No. Temecula is outside SDG&E territory; electricity comes from Southern California Edison and natural gas from SoCalGas, so their programs apply instead. Rebate programs change often, and several statewide ones are closed, so we'll check current eligibility with you before you decide.
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