Mario Castillo Electric's Electrical Services
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Check out our Blog
Energy Efficient Solutions for Office Lighting: How Businesses Can Lower Costs and Improve Workspaces
Aug 31, 2026 | Commercial, Lighting
Lighting does more than help employees see their work. The right office lighting can reduce energy costs, improve productivity, create...
Read MoreElectrical Load Calculations for Businesses: Why They Matter Before You Upgrade
Aug 15, 2026 | Commercial
Adding new equipment, upgrading HVAC systems, or expanding your workspace can put serious strain on your electrical system. Without understanding...
Read MoreHow to Choose a Commercial Electrician: What Business Owners Should Look For
Aug 06, 2026 | Commercial, Maintenance
At Mario Castillo Electric we know that choosing the right commercial electrician is an important decision for every business. Your...
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South Bay and Orange County Communities We Serve
LA County / Southbay Cities:
Carson, Cerritos, Compton, Downey, Gardena, Harbor City, Hawaiian Gardens, Lakewood, Lomita, Long Beach, Norwalk, San Pedro, Signal Hill, Palos Verdes Peninsula, Torrance, Wilmington, Lynwood, Lawndale, La Mirada, Paramount, Artesia, Hawthorne, Willowbrook
Orange County Communities:
Rossmoor, Alamitos, Cypress, Seal Beach, Irvine, Buena Park, La Palma, Fullerton, Anaheim, Westminister, Stanton, Midway City, Orange, Garden Grove, Fountain Valley, Costa Mesa, Santa Ana, Newport Beach, Tustin/North Tustin, Huntington Beach, Villa Park, Placentia, Yorba Linda