Do I Need a Permit for HVAC Work in San Bernardino, CA?
HVAC permitting in San Bernardino follows California's standard framework — mechanical permit required for all equipment installation and replacement, single-agency process through Building and Safety, and California's mandatory HERS duct leakage test that applies to HVAC replacements statewide. San Bernardino's Climate Zone 10 sets some of California's most demanding HVAC efficiency requirements: the extreme heat means air conditioning works harder here than almost anywhere in California, and the minimum efficiency standards reflect that. Southern California Edison (SCE) serves electricity; SoCalGas serves natural gas — neither issues separate permits, but both may have rebate programs worth checking before purchasing new equipment.
San Bernardino HVAC permit rules — the basics
San Bernardino's Building and Safety Division requires a mechanical permit for all HVAC equipment installation and replacement. The permit is applied for in person at 201 N. E Street or, for simple like-for-like replacements, may be counter-issued — the Building and Safety Division notes that minor trade permits "are usually issued directly over the counter." The licensed California C-20 (Warm Air Heating, Ventilating and Air Conditioning) contractor typically handles the permit application. All contractors must hold a current City of San Bernardino business license for permit issuance.
California's mandatory HERS duct leakage test is a significant differentiator between California cities and Texas cities in this guide. Under Title 24, when an HVAC system is replaced in an existing home, a certified HERS rater must test the duct system for leakage to confirm it doesn't exceed the code maximum. The HERS rater is a third-party certifier, independent of the HVAC contractor. If the duct system fails the leakage test (leaks too much), the ducts must be sealed by the contractor and retested. The HERS test adds $300–$500 to project cost and potentially $800–$2,500 in duct sealing if the existing ducts fail. In San Bernardino's older housing stock, duct leakage is a common finding — older homes with original ductwork in unconditioned attics frequently have significant leakage that reduces system efficiency.
San Bernardino's Climate Zone 10 efficiency minimums are among California's most stringent because the zone is among the state's hottest. The 2025 California Title 24 minimum efficiency requirements for cooling systems in Climate Zone 10 are higher than for cooler coastal zones — California's building energy efficiency standards are climate-zone specific, and Zone 10's hot desert climate drives high cooling loads. For split AC systems under 65,000 BTU/hr, the minimum SEER2 in California is 16.0 (compared to the federal minimum of 15.2). Higher SEER2 ratings qualify for SCE rebates and provide meaningful operating cost savings in San Bernardino's long, hot cooling season.
Southern California Edison (SCE) serves electricity to most San Bernardino residents. Unlike Oncor in Texas (deregulated, where SCE-equivalent is the distribution utility but residents choose retail providers), SCE is the sole electric utility for most San Bernardino addresses — there is no retail choice for most customers. SCE offers residential energy efficiency rebates for qualifying high-efficiency HVAC equipment through its Energy Saving Assistance Program and Home Energy Upgrade programs. SoCalGas offers rebates for high-efficiency gas furnaces through their rebate programs. Check sce.com/rebates and socalgas.com/save-money-and-energy for current programs.
Three San Bernardino HVAC scenarios
| HVAC Work Type | Requirements in San Bernardino |
|---|---|
| Like-for-like AC/furnace replacement | Mechanical permit (may be counter-issued). HERS duct leakage test required (Title 24). Licensed C-20 contractor. SCE/SoCalGas rebates available. |
| New heat pump system (first installation) | Mechanical permit + electrical permit (if new 240V circuit). HERS duct test if ducts modified. Federal 30% ITC for qualifying systems. SCE heat pump rebates. |
| Ductless mini-split (non-ducted room) | Mechanical permit + electrical permit. No HERS duct test (ductless). Counter-issuance may apply. SCE ductless rebates available. |
| HERS duct leakage test | Required for all HVAC replacements in ducted systems per California Title 24. Third-party HERS rater must test; contractor seals if fails; rater retests. Cost: $300–$500 test + $600–$2,500 sealing if failed. |
| Climate Zone 10 minimum efficiency | Split AC/heat pump: minimum 16.0 SEER2. Gas furnace: minimum AFUE per current Title 24. Higher efficiency = better SCE/SoCalGas rebate eligibility. |
What HVAC replacement costs in San Bernardino
San Bernardino's Inland Empire construction market is more affordable than the Bay Area. Standard split system replacement (gas furnace + AC): $7,000–$14,000. High-efficiency system (16 SEER2+, 96% AFUE): $9,000–$18,000. Heat pump conversion (first installation): $10,000–$20,000. Ductless mini-split (single zone): $4,000–$8,500. HERS test: $300–$500. Duct sealing if failed: $600–$2,500. Permit fees (valuation-based): $200–$600. Total HVAC project overhead (permit + HERS) compared to McKinney: about $700–$1,500 more due to HERS requirement and California's valuation-based permits vs. Texas's flat $24–$33. Licensed C-20 contractor and City of San Bernardino business license required.
Phone: (909) 384-5057 | Inspections: (909) 998-2000
Email (application only): CD-Technician@sbcity.org
Plan check hours: M, Tu, Th 8am–4pm; W 10am–4pm; F 8am–2pm
CSLB C-20 license verification: cslb.ca.gov
SCE rebates: sce.com/rebates | SoCalGas rebates: socalgas.com
Common questions about San Bernardino HVAC permits
Do I need a permit for HVAC work in San Bernardino?
Yes — mechanical permit required for all HVAC installation and replacement. Apply in person at 201 N. E Street; simple replacements may be counter-issued same day. California also requires a HERS duct leakage test for ducted HVAC replacements (third-party certified). Licensed C-20 contractor required. Contact Building and Safety at (909) 384-5057.
What is the HERS duct test and why is it required in San Bernardino?
California Title 24 Part 6 requires a HERS (Home Energy Rating System) duct leakage test when an HVAC system is replaced in an existing home with a ducted system. A certified HERS rater (not the HVAC contractor) tests the duct system's leakage against the code maximum. If the ducts leak excessively, the contractor must seal them and the rater must retest before the permit closes. This requirement applies statewide in California — San Bernardino, Fremont, Santa Clarita — unlike Texas cities (McKinney, Huntsville) where no duct testing is required. Budget $300–$500 for the HERS test and $600–$2,500 for duct sealing if the system fails.
What HVAC efficiency is required in San Bernardino's Climate Zone 10?
The 2025 California Title 24 minimum efficiency for central split AC systems in Climate Zone 10 is 16.0 SEER2 (or equivalent). Gas furnace minimums are also set by Title 24. These are minimum requirements — higher-efficiency equipment qualifies for SCE and SoCalGas rebates. Given San Bernardino's long, hot cooling season, the operating cost savings from higher-SEER2 equipment are meaningful over the system's lifespan.
Does SCE need to be involved in a San Bernardino HVAC replacement?
No separate SCE permit is required. Southern California Edison is the electric utility for most San Bernardino addresses, but SCE doesn't issue permits for residential HVAC installations. The city mechanical permit from Building and Safety is all that's required from a regulatory standpoint. SCE does offer rebates for qualifying high-efficiency equipment — check sce.com/rebates for current programs and eligible equipment. For panel upgrades associated with new HVAC equipment, a separate San Bernardino electrical permit is required.
Are heat pumps a good choice for San Bernardino?
Yes, especially for the cooling season. San Bernardino's Climate Zone 10 makes heat pumps highly efficient for cooling — modern heat pumps achieve SEER2 ratings of 18–22 or higher. For heating, the mild San Bernardino winters (lows typically 32–40°F) are well within the effective operating range of air-source heat pumps; backup resistance heating handles the coldest periods. The federal 30% ITC applies to qualifying heat pump systems under the Inflation Reduction Act. SCE offers heat pump rebates. The primary consideration is whether the existing electrical service and panel can support a heat pump (typically 240V, 30–50 amps) — many older San Bernardino homes with 100A service may benefit from a panel upgrade concurrent with the heat pump installation.
How does San Bernardino HVAC permitting compare to McKinney, TX?
More complex and more expensive. McKinney: $15 + $9/unit mechanical permit (~$24–$33 total), no HERS test, no duct sealing requirement, 3–7 day turnaround. San Bernardino: valuation-based mechanical permit ($200–$600), mandatory HERS duct leakage test ($300–$500 + potential $600–$2,500 duct sealing), California-only contractor license requirements (C-20), and countywide SCE/SoCalGas utility structures. The extra $700–$1,500 in California HVAC overhead reflects statewide energy code compliance requirements that Texas doesn't mandate.
This page provides general guidance based on publicly available sources as of April 2026, including the San Bernardino Building & Safety Division and the 2025 California Building Standards Code Title 24. Permit rules, fees, HERS requirements, and rebate programs change. For a personalized report based on your exact address, use our permit research tool.