Glendale Commercial Furnace Repair for Businesses

When your building’s furnace goes down, you need an experienced commercial team that can act fast, d...

When your building’s furnace goes down, you need an experienced commercial team that can act fast, diagnose accurately, and repair the right way. #1 AC Guys is a 4th‑generation family HVAC company serving Glendale and Greater Los Angeles with 80+ years of engineering expertise. Our factory‑trained technicians (Fujitsu, Mitsubishi Electric, Midea, G...

80 years experience in engineering
Available 24/7 for Emergencies
Quick service Same-Day inspection and estimate

★★★★★

95% of clients recommend us

Commercial Furnace Repair in Glendale

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.

Laboratory Environmental Controls

Warehouse HVAC Systems

School HVAC Systems

Fast, code‑compliant commercial furnace repair in Glendale

From rooftop packaged units to gas furnaces and make‑up air systems, we diagnose and repair complex heating issues with precision.
4th‑generation family engineers • 80+ years of experience • Factory‑trained • Serving Glendale and LA County

Why Glendale Businesses Choose #1 AC Guys

For four generations, our family of engineers has kept Southern California businesses warm, safe, and productive. In Glendale, where mixed‑use buildings, retail corridors, Class‑A offices, and restaurants run on tight schedules, you need a commercial HVAC partner who understands the stakes. #1 AC Guys combines 80+ years of hands‑on engineering experience with factory training from Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China). That cross‑platform knowledge helps us solve tough problems in modern and legacy systems alike—without guesswork.

Common Commercial Furnace & Rooftop Unit Issues We Fix

No heat, intermittent heat, or short cycling
Ignition failures: hot surface igniters, flame sensors, spark modules
Blower and VFD issues: motors, bearings, belts, pulleys
Gas valve, pressure switch, and rollout switch faults
Heat exchanger cracks, high CO readings, unsafe combustion
Packaged unit control board and economizer malfunctions
Thermostat/BMS communication errors and zoning problems
Dirty burners, restricted filters, and airflow imbalances

We service rooftop packaged units (RTUs), gas furnaces, make‑up air units, unit heaters, and multi‑zone systems used across Glendale’s offices, retail, medical, hospitality, and industrial spaces.

Our Commercial Repair Process

1) Expert diagnostic: We begin with a full system check—electrical, gas, airflow, and controls—to find root causes, not just symptoms.
2) Transparent options: You’ll get clear repair recommendations, pricing, and timelines so you can make confident decisions that fit budget and operations.
3) Precision repair: We use proven procedures and quality parts, calibrate combustion and airflow, and verify safety and performance under load.
4) Verification & documentation: Post‑repair testing, CO and gas leak checks, temperature split verification, and a detailed service report for your records and compliance.

Safety, IAQ, and Code Compliance

Heating reliability is only part of the picture—air quality and safety matter just as much. Our mission is healthier indoor air for a healthier life. That’s why every repair visit can include:

Combustion analysis and CO monitoring
Gas leak and venting inspections
Filter and MERV guidance for cleaner air
Fan speed and airflow balancing to reduce drafts and cold spots
Economizer and ventilation checks to improve fresh air intake

We follow industry best practices and local codes in Glendale and Los Angeles County, helping you protect occupants and meet standards without surprises.

Built for Complex, Large‑Scale Projects

From multi‑tenant buildings and campuses to high‑demand restaurants and healthcare offices, we excel when systems are big and challenges are complex. Whether your site uses packaged gas/electric units, ducted split systems, or integrates with advanced controls, our engineering‑driven approach delivers reliable heat and predictable operating costs.

Preventive Maintenance & Value Engineering

Reduce breakdowns and energy waste with a tailored maintenance plan for your Glendale property. Our visits can include seasonal tune‑ups, filter programs, belt and bearing service, burner cleaning, economizer verification, sensor calibration, and airflow tests. When repair vs. replace decisions arise, we’ll provide lifecycle cost comparisons, utility rebate insights, and right‑sized equipment options that prioritize comfort, uptime, and ROI.

Brands and Platforms

Factory training with Fujitsu, Mitsubishi Electric, Midea, Gree, and Haier—plus deep field experience across most major commercial brands—means we can diagnose and repair mixed inventories common in Southern California buildings with confidence and speed.

Service Area

Based in Los Angeles, we proudly serve Glendale and surrounding regions, including Los Angeles County and nearby areas such as Orange County, Ventura County, and Western Riverside County. Managing multiple properties? We can support portfolios across these markets with consistent standards and reporting.

What You Can Expect

Responsive scheduling and minimal disruption to operations
Straightforward pricing and clear communication
Code‑compliant repairs and thorough safety checks
Engineered solutions for tough and recurring problems
A partner committed to healthy indoor air and occupant comfort

Get Your Glendale Commercial Furnace Back Online

Don’t let heating issues impact tenants, customers, or staff. Contact #1 AC Guys for professional commercial furnace repair in Glendale. Our 4th‑generation family team brings 80+ years of engineering expertise to every call—so you get reliable heat, better air, and peace of mind. Let’s restore comfort and protect your bottom line today.

FAQ

What problems can arise during heating?

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.

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