Commercial HVAC Services in Modesto, CA – Reliable & Affordable

DeHart offers commercial HVAC services, including system installation, replacement, repair, and routine maintenance for businesses and facilities of all sizes.

We do not currently offer commercial plumbing services, but our team is highly experienced in helping commercial clients maintain reliable, efficient heating and cooling systems tailored to their operational needs.

If you're looking for a trusted HVAC partner for your business, we're here to help.

No, we do not offer commercial plumbing services at this time. Our focus for commercial clients is on HVAC system installation, repair, and maintenance.

If your business needs reliable heating and cooling solutions, our commercial HVAC team is here to help.

Yes, we do. DeHart services a variety of commercial refrigeration systems, including:

• Medium-temperature walk-in coolers and freezers
• Reach-in coolers and freezers
• Commercial ice machines

If you’re experiencing issues or need routine maintenance on your commercial refrigeration equipment, our experienced technicians are here to help keep your business running smoothly.

DeHart’s commercial maintenance plan delivers proactive, expert care for your heating, cooling, and ventilation systems. Here's what’s included:

• Thorough inspections, cleanings, and safety checks
• Filter replacements and coil cleaning for better airflow and efficiency
• Operational testing and performance adjustments to keep systems running at peak performance
• Detailed service reports after each visit with recommendations when needed
• Priority scheduling for emergency service
• Exclusive discounts on repairs and replacement parts

Plans are tailored to your building’s layout, equipment type, and business needs, with flexible scheduling options that fit your workflow.

For more information, visit our Commercial Maintenance page.

For most businesses, we recommend scheduling HVAC maintenance three times per year—once in the spring and again in the summer for your cooling system, and once in the fall or early winter for your heating system. This seasonal approach helps ensure your equipment runs efficiently, reduces the risk of unexpected breakdowns, and extends the lifespan of your systems.

Facilities with high occupancy, critical equipment, or heavy usage may benefit from more frequent service. Our team can help design a custom maintenance plan tailored to your building’s equipment, usage, and operating schedule.

No, repairs are not included in the maintenance agreement.

The agreement covers scheduled filter replacements, a full 28-point inspection, and thorough system cleaning, but any additional parts or repairs are not included.

If our technicians identify an issue during a maintenance visit, we’ll document it in your service report and provide a flat-rate price for the recommended repair so you can make an informed decision.

This approach ensures your systems stay in peak condition while giving you full control over any follow-up work.

Yes. As a commercial maintenance member, you’ll receive a 20% discount on all recommended repairs identified during your service visits.

When it comes time to replace a unit, you’ll also receive special pricing on new equipment—exclusive to our maintenance customers and above what we offer to non-members.

Yes. DeHart offers 24-hour emergency HVAC repair for commercial clients.

Our team is available nights, weekends, and holidays to respond quickly when your business needs urgent service.

Call us anytime at 209-523-4578—a live team member will assist you right away.

Call us immediately at 209-523-4578. Our emergency team is available 24/7, including nights, weekends, and holidays.

A live DeHart team member will take your call and dispatch a technician right away to get your system back up and running as quickly as possible.

Don’t wait or try to book online—calling is the fastest way to reach us during an emergency.

Absolutely. At DeHart, we understand that no two facilities are the same. That’s why our commercial maintenance plans are fully customizable based on your building’s equipment, usage, and operational needs. Whether you manage a single rooftop unit or multiple systems across multiple locations, we’ll work with you to build a plan that fits your schedule, priorities, and budget.

Yes! Our team regularly provides estimates for future equipment upgrades and replacements to help businesses plan ahead and budget effectively. Whether you’re looking to phase out aging systems or prepare for a major project down the line, we’ll work with you to create a long-term strategy that supports your comfort needs and financial goals.

For nearly 80 years, DeHart has been the trusted name in home comfort across our community. We’re a family-owned company built on integrity, expert service, and a genuine commitment to doing right by our customers. From HVAC to plumbing, repairs to replacements, we bring decades of experience, highly trained technicians, and a 100% satisfaction guarantee to every home we serve. We stand behind our work with an industry-leading 10-year parts and labor warranty, a craftsmanship guarantee, and flexible financing options to make comfort more accessible when you need it most. When you choose DeHart, you’re choosing quality, reliability, and a team that truly cares.