Commercial Boiler Installation in Ontario, CA

Proven commercial boiler expertise for Ontario, CA

#1 AC Guys designs and installs high‑efficiency commercial boiler systems in Ontario, CA and nearby business corridors along the I‑10 and SR‑60. As a fourth‑generation family business with 80+ years of engineering experience, we’re built for complex projects—tight timelines, occupied buildings, and demanding performance criteria. Our mission is to deliver healthy, comfortable indoor environments that help your teams work better and your guests feel welcome.

What we install

We design and install atmospheric, power‑vented, and high‑efficiency condensing boilers, as well as modular and hybrid plants for load flexibility. Our team handles hydronic distribution, primary/secondary piping, pumps, separators, expansion, venting, combustion air, and flue systems. We integrate with existing BAS/BMS, DDC, or smart controls to optimize staging, reset schedules, and energy use.

Design‑build process that reduces risk

- On‑site assessment and load calculations specific to your building’s envelope, occupancy, and schedules.
- Clear options with lifecycle costs, efficiency targets, and rebates/tax‑credit guidance where available.
- Detailed scope, phasing, and safety plan to maintain operations in occupied spaces.
- Professional installation with attention to code, manufacturer specs, and best practices.
- Start‑up, balancing, and commissioning with documented performance benchmarks.

Controls and system integration

From outdoor reset and lead/lag sequencing to demand‑based staging and lockout protections, we configure controls to stretch efficiency without compromising comfort. Our factory‑trained engineers (Fujitsu, Mitsubishi Electric, Midea, Gree, Haier) bring a deep understanding of modern HVAC systems and how hydronic heat pairs with air‑side equipment, VRF, and make‑up air units for a coordinated plant strategy.

Safety, code, and documentation

We follow strict safety protocols and local code requirements for Ontario and the Greater Los Angeles region, including combustion safety, gas piping, venting, and equipment clearances. You receive as‑built documentation, O&M manuals, and a training session for your facilities team so day‑to‑day operation is straightforward and safe.

Industries we serve

Offices and corporate campuses, warehouses and distribution, hospitality and restaurants, multifamily communities, schools and religious facilities, healthcare and clinics, light manufacturing, retail, and public spaces. Whether you’re replacing an aging boiler or building a new plant, we tailor the solution to your load profile and future growth.

Maintenance that protects your investment

Our planned maintenance programs include combustion checks, water‑quality management, heat‑exchanger inspections, venting and safety device verification, and controls calibration. Proactive service reduces fuel use, improves reliability, and extends equipment life—so you avoid costly downtime during peak heating seasons.

Transparent pricing and reliable timelines

You’ll receive a clear scope, firm scheduling, and milestone updates from start to finish. We coordinate permits, crane/lift logistics, and delivery windows to keep your site safe and your operations running. Our installs are clean, labeled, and built for future service access.

Local to Ontario, connected to Greater LA

We proudly serve Ontario, CA and the surrounding Greater Los Angeles area, including Los Angeles County and nearby regions such as Orange County, Ventura County, and Western Riverside County. If your facility sits near Ontario International Airport, the 10/60 corridor, or in neighboring business parks, we can mobilize quickly for estimates and installs.

Why #1 AC Guys

- Fourth‑generation, family‑owned HVAC contractor with 80+ years of engineering heritage.
- Specialized in large and complex commercial projects.
- Factory‑trained engineers and meticulous craftsmanship.
- Health‑focused indoor environments that support productivity and comfort.
- Responsive support before, during, and after installation.

Get your commercial boiler project started

Request a site visit to evaluate your existing plant, discuss efficiency goals, and map out a clear upgrade path. We’ll provide a data‑driven proposal, timeline, and plan to minimize disruption. Contact #1 AC Guys today for Commercial Boiler Installation in Ontario, CA—engineered for reliability, performance, and long‑term value.