20% Todays special Deal in your city
Downey, CA
20% Todays special Deal in your city
+1 (213) 444-4223
When your business in Downey needs a reliable York rooftop unit, #1 AC Guys delivers end‑to‑end comm...
95% of clients recommend us
We offer a wide range of HVAC services catered to both residential and commercial clients. Even the all-powerful Pointing has no control about the blind texts.
#1 AC Guys provides code‑compliant, turnkey York rooftop unit installations for businesses in Downey and across Los Angeles County. We are a 4th‑generation family of engineers with 80+ years in engineering, leveraging advanced practices from manufacturer training with Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea, Gree, and Haier. Our team manages everything: load calculations, crane lifts, curb adapters, gas and electrical, controls, Title 24 compliance, permits, and commissioning. We specialize in large and complex rooftops and deliver healthy indoor air, quiet operation, and efficient comfort. Expect transparent pricing, tight timelines, and proactive communication from kickoff to handoff. Whether you’re replacing an aging unit or adding capacity, we install to manufacturer specifications and local codes—safely, cleanly, and on schedule.
We combine 80+ years of engineering know‑how with field‑proven commercial HVAC experience. As a 4th‑generation family business, we bring accountability, safety, and precision to every rooftop. Our mission is healthy air for healthy lives—achieved through proper sizing, clean installation practices, and rigorous commissioning that verifies the performance you pay for.
Our engineers are manufacturer‑trained by Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China). The same discipline we apply on those platforms is brought to every York RTU installation, following manufacturer specifications, California Title 24, and local code requirements.
We coordinate crane lifts during low‑impact hours, protect roofing, and use curb adapters to fit new York RTUs onto existing footprints where feasible—saving time and cost. Every connection is pressure‑tested, insulated, and sealed for longevity.
Your project is delivered with complete documentation: permit cards, Title 24 forms, equipment submittals, start‑up checklists, and warranty registration. We follow OSHA safety protocols, fall protection standards, and seismic requirements. Where economizers or demand‑control ventilation are required, we configure and test them for code compliance and energy savings.
After installation, we offer scheduled maintenance to protect coils, belts, bearings, and controls—reducing breakdowns and stabilizing operating costs. Our proactive service helps keep your York RTU efficient season after season.
We install, replace, and upsize York RTUs to meet growth, comfort, and energy goals. Whether it’s a like‑for‑like swap or a redesign with new zoning and controls, our team delivers a smooth, code‑compliant project built to last.
We’re based in Los Angeles County and serve Downey and nearby cities, with extended coverage across Orange County, Ventura County, and Western Riverside County. If your portfolio spans multiple sites, we can standardize equipment and maintenance plans to simplify operations.
Share your current unit details (tonnage, model, curb dimensions), photos, and roof access info, and we’ll turn around a clear proposal quickly. If you prefer, we’ll perform a site visit to verify electrical, gas, structural, and crane access for a precise, construction‑ready plan.
Ready to upgrade your rooftop comfort? Contact #1 AC Guys for professional York RTU installation in Downey—engineered for healthy air, reliability, and long‑term value.
We offer a wide range of HVAC services catered to both residential and commercial clients. Even the all-powerful Pointing has no control about the blind texts.
We offer a wide range of HVAC services catered to both residential and commercial clients.
We offer a wide range of HVAC services catered to both residential and commercial clients.
