How Much is a New HVAC System?

Commercial HVAC Sales & Service for Small, Medium, and Large Businesses

The cost of a new commercial HVAC system depends on your building size, system type, and whether you are installing new equipment or replacing an existing unit. For businesses in Southern California, including Orange County, Los Angeles County, San Bernardino County, and Riverside County, commercial HVAC pricing is typically driven by square footage, occupancy demands, zoning requirements, and efficiency standards.

Small storefronts, mid-sized office buildings, and large facilities all require different HVAC solutions, which is why costs can vary significantly.

In this article, we break down realistic commercial HVAC system costs by building size to help you plan accurately.

HVAC Solutions by Building Size

Small Businesses (Up to 5,000 Square Feet)

Small commercial spaces such as boutiques, medical suites, studios, and single-office units need systems that deliver reliable comfort without unnecessary capacity or cost.

Common System Types

• 3– to 5-ton split systems
• Compact rooftop units
• Multi-zone or ductless mini splits
• Light commercial packaged units

Typical Cost Range

HVAC system costs for a small commercial space can realistically range from:

• Replacement: $6,000–$12,000
• New installation: $8,000–$15,000

Common Small-Space HVAC Challenges

• Temperature imbalances due to simple duct layouts
• Systems oversized for the square footage
• Rising utility costs caused by low-efficiency units
• Noise issues near customer and work areas
• High foot traffic leading to fast temperature swings

Our team of skilled technicians and sales representatives can help you determine what your space needs.

Medium-Sized Businesses (5,000 to 25,000 Square Feet)

Mid-size commercial properties, like schools or corporate offices, have more complex layouts and require multiple zones or higher-capacity systems to maintain consistent comfort throughout the building.

Common System Types

• Multiple RTUs (rooftop units)
• Larger 7- to 15-ton packaged units
• VRF/VRV multi-zone systems
• Hybrid split systems with expanded ductwork
• Economizers and energy management controls

Typical Cost Range

For medium-sized facilities, pricing depends heavily on zoning and the number of units:

• Replacement: $12,000–$40,000
• New installation: $25,000–$100,000+

Medium-Space HVAC Challenges

• Inconsistent temperatures across different zones
• Humidity control issues
• Airflow loss due to aging or leaking ductwork
• Ventilation needs for higher occupancy
• Multiple units requiring synchronized controls

Our experienced technicians and sales consultants will evaluate your building and recommend the system that fits your space best.

Large Commercial Facilities (25,000 Square Feet and Above)

Large-scale systems commonly used in hospitals or multi-level commercial buildings must support heavy occupancy, large open areas, equipment-generated heat loads, and strict environmental guidelines. These projects often involve engineering teams and ongoing systems management.

Common System Types

• Banks of large RTUs
• Industrial VRF/VRV solutions
• Chilled water plants
• Cooling towers
• Large air handlers
• Building automation systems (BAS)

Typical Cost Range

If you are evaluating how much an HVAC system costs for a large commercial facility, expect wider ranges due to engineering and equipment requirements:

• Replacement: $50,000–$300,000+
• New installation: $250,000–$1M+

Large-Facility HVAC Challenges

• Strict ventilation and air quality requirements
• Complex mechanical and electrical integration
• High energy demand across zones
• Heavy maintenance needs
• Large-scale savings opportunity with modern efficiencies

By assessing your square footage, our knowledgeable sales and service team can guide you to the HVAC solution that fits your needs.

New Installation vs. Replacement: Understanding the Cost Difference

Pricing for commercial and industrial HVAC varies widely depending on whether you’re starting from scratch or replacing existing equipment.

New Installation

Includes full mechanical buildout:

• System design and load calculations
• Ductwork installation
• Electrical upgrades
• Structural and rooftop prep (if applicable)
• Thermostats, zoning, and controls
• Permits and inspections

New installations cost more because the infrastructure must be created from the ground up.

Replacement

Typically more budget-friendly:

• Can reuse existing ducts and electrical
• Less structural work
• Faster installation timeline
• Reduced downtime for your business

Replacement is a strong option when the existing system is outdated or inefficient.

Common HVAC Problems Across All Commercial Building Sizes

• Hot and cold spots
• Poor airflow or ventilation
• Rising utility bills
• Short cycling from improperly sized systems
• Humidity or moisture issues
• Loud or aging rooftop units
• Indoor air quality concerns
• Frequent repairs due to aging equipment

Our team focuses on long-term solutions that improve comfort and reduce operational costs.

For a precise estimate, consulting a local HVAC contractor familiar with Southern California’s climate and business standards is recommended.

Key Questions

What system size and tonnage does my building require?

We look at your square footage, layout, and how the space is used to choose the right size system. This helps avoid hot spots and keeps energy costs down.

Which HVAC system type best suits my building size and workflow?

Small spaces may only need a simple split or ductless system, while larger buildings often use rooftop units or multi-zone setups. We recommend what best fits your space and daily operations.

What will my total cost be, and what factors could add costs later?

Costs depend on system size, installation needs, ductwork condition, and efficiency level. Most surprises come from old ductwork, electrical issues, or structural updates. We give clear estimates upfront so you know what to expect.

Will my existing ductwork support the new system?

We check your ducts to make sure they’re the right size and in good shape. If they’re leaking or outdated, we’ll let you know what should be fixed.

How will installation affect daily business operations?

We plan around your schedule and work to keep disruption minimal. Many replacements are done in a day, while larger projects may take longer.

What efficiency rating delivers the best long-term savings?

Higher-efficiency systems cost less to run and can lower your utility bills. We help you choose the right balance of cost and long-term savings.

Are energy rebates or incentives available?

Commercial HVAC rebates are available through local utilities such as Southern California Edison, SoCalGas, LADWP, Riverside Public Utilities, and Anaheim Public Utilities. Many of these programs offer incentives for high-efficiency rooftop units, upgraded controls, and energy-saving HVAC equipment for qualifying businesses.

Disclaimer: Rebate amounts and eligibility vary by county, utility provider, and system type. Programs change throughout the year. We’ll help you confirm which incentives your project qualifies for before installation.