🌆 Package Unit & Rooftop HVAC Installation in Orange County

For many homes and businesses, a rooftop HVAC unit—also called a rooftop package unit—is the most practical way to deliver heating and cooling. Instead of having separate furnace and AC systems, a packaged rooftop HVAC unit combines all components into one outdoor system, typically mounted on the roof or a concrete pad.

At GoTech Air Conditioning & Heating, we specialize in rooftop package unit installation for both residential and commercial applications. From design and placement to code-compliant installation and commissioning, we handle the process from start to finish.

What Is a Rooftop HVAC Unit?

A rooftop unit (RTU) is a self-contained HVAC system that includes the compressor, condenser, evaporator coil, and air handler in one cabinet. Instead of splitting heating and cooling between indoor and outdoor components, RTUs deliver conditioned air through ducts directly from the roof.

Key benefits:

• Space-saving – frees up indoor square footage

• Easy service access – technicians work outside, not in attics or closets

• Flexible design – available in horizontal or vertical discharge

• Multi-function – can heat, cool, ventilate, and even dehumidify

• Widely used – ideal for commercial buildings, offices, warehouses, and retail

Learn more about how RTUs work from the U.S. Department of Energy – Packaged Units Guide.

Residential vs. Commercial Rooftop Package Units

Residential rooftop HVAC units

• Often sized between 2–5 tons

• Perfect for homes without indoor furnace/air handler space

• Provide quiet operation and year-round comfort

Commercial rooftop HVAC units

• Range from 3–50+ tons

• Can be configured with economizers for free cooling

• Designed for flat roofs in offices, restaurants, warehouses, retail, and schools

• Easily scalable—multiple units can serve large facilities

For a closer look, ASHRAE offers technical guidance and diagrams of commercial rooftop HVAC systems. (ashrae.org)

Rooftop Package Unit Installation Process

A professional installation ensures safety, compliance, and peak performance.

1. Site evaluation – roof structure, duct design, load calculation

2. System selection – tonnage, fuel type (gas/electric/hybrid), efficiency rating

3. Permitting & crane logistics – most rooftop units require crane placement

4. Old system removal – safe removal and disposal of existing units

5. Curb installation & sealing – secure curb placement for airtight, waterproof fit

6. Unit placement – crane lift and anchoring

7. Electrical & gas hookups – dedicated circuits, breakers, and gas lines (if applicable)

8. Duct & control connections – tie into existing ducts and thermostat

9. Startup & commissioning – refrigerant verification, airflow balancing, safety testing

Rooftop HVAC Unit Cost

The cost of rooftop HVAC unit installation depends on:

• System size (tons of cooling/heating capacity)

• Efficiency ratings (SEER2, EER, AFUE)

• Electrical/gas upgrades needed

• Ductwork modifications or curb installations

• Commercial vs residential scope

Typical ranges in Southern California:

• Residential rooftop package unit: $7,500 – $14,500 (installed)

• Commercial rooftop HVAC units: $12,000 – $40,000+, depending on size and features

Get DOE’s breakdown of packaged unit efficiencies and cost factors here: DOE Energy Saver – Packaged Systems.

Rooftop HVAC Maintenance (Why It Matters)

Like all HVAC systems, rooftop package units require routine maintenance. Neglect can shorten lifespan and spike energy bills.

Our rooftop unit maintenance checklist includes:

• Filter replacement & coil cleaning

• Belt, blower, and motor inspection

• Refrigerant level & pressure testing

• Gas burner/heat exchanger checks

• Control board & electrical testing

• Duct sealing and airflow verification

ENERGY STAR notes that proper maintenance can improve efficiency and reduce operating costs for rooftop systems. (energystar.gov)

Why Choose GoTech for Package Unit Installation?

• Licensed & insured (CSLB verified)

• Experience with residential and commercial RTUs

• Crane and curb installation handled start-to-finish

• Transparent pricing and financing options

• Family-owned, Orange County-based service

• 100% satisfaction guarantee

Service Areas

We install and service rooftop HVAC units across:
Irvine, Mission Viejo, Laguna Niguel, Lake Forest, Huntington Beach, Newport Beach, Santa Ana, Rancho Santa Margarita, Corona Del Mar, Anaheim, Dana Point, Yorba Linda and beyond.

Helpful Resources

• EPA – Refrigerant Handling & Certification (Section 608)

• CSLB – California Contractor License Lookup

Call Today for Rooftop Package Unit Installation in Orange County

When you need reliable rooftop HVAC unit installation, GoTech is your trusted local partner. From small residential package units to large commercial RTUs, we deliver efficient, safe, and professional installs.

📞 Call today to schedule your rooftop package unit estimate.