New AC System in Brentwood: Written Estimate Before Any Work Starts

Most of the undersized or oversized systems we get called out to repair in Brentwood were never actually sized for the house they're cooling, they were sized for a rule of thumb. Brentwood's mix of older estate homes on Sullivan Canyon and Mandeville Canyon and larger lots under mature tree canopy means two houses with identical square footage can carry very different loads once you account for shade, glazing, and ceiling height. Marine layer keeps mornings mild, but afternoons a few miles inland from the coast still climb into the 80s and into the 90s during summer heat events, and an undersized system runs flat out trying to catch up by mid-afternoon. We run a full Manual J load calculation on every install, measuring window area, insulation, ceiling height, and tree shading, so you don't end up back on our schedule chasing a compressor that's been overworking since day one.

Brentwood also has active HOAs and design-review boards in many neighborhoods, and several require advance notice or architectural approval before placing condenser units where they're visible from the street or a neighboring lot. We coordinate that approval as part of the install so equipment placement doesn't stall the project. If you're moving from an older single-stage unit to a variable-speed system, the electrical load changes, and on some of Brentwood's older panels that means a service upgrade before the new equipment goes in, we flag that during the site visit, not after the unit shows up. For ductless options in bonus rooms or converted garages, visit our <a href='/services/ductless-mini-split'>ductless mini-split page</a>. To see the other communities we serve, check our <a href='/areas'>service areas</a>.

Every AC installation in California must meet Title 24 energy code, which now mandates SEER2 efficiency ratings and duct testing for all new systems or replacements in homes built before 2000. SEER2 is the updated efficiency metric that replaced SEER in 2023, and the minimum threshold in California is 14.3 SEER2 for split systems. Most contractors stock 15 to 18 SEER2 units because the incremental cost is small and the summer electricity savings in warm Southern California climates like Brentwood's add up fast. We provide a written estimate that includes the system model, SEER2 rating, and total installed price before we start. No surprise fees, no upsell pressure.

If you install a qualifying high-efficiency system, you may be eligible for rebates from SCE or manufacturer promotions that run in spring and fall. We track current offers and walk you through the paperwork if a rebate applies to your install. Before we leave, we run the new system through a full cycle with you and explain the controls. To compare efficient models, see the list of <a href='https://www.energystar.gov/products/central_air_conditioners' target='_blank' rel='noopener'>ENERGY STAR-certified central AC systems</a>. Once your new system is running, we recommend annual maintenance to keep efficiency high and catch small issues before they turn into summer breakdowns. Visit our <a href='/services/ac-maintenance'>AC maintenance page</a> to learn more.