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RTU & Split Installs in Irvine, CA

Irvine business parks were often built in phases, which means a single roof can carry a dozen rooftop units of nearly identical age and capacity. Replacing them one failure at a time wastes crane days and leaves tenants with repeated outages. We survey curbs, structural framing, gas and electrical capacity, and clearances to parapets, then propose a sequenced program: which units go first, which share a lift, and how Title 24 acceptance testing is handled for each. Landlords with portfolio budgets get a replacement schedule they can plan against, and closeout packages with nameplate data, startup readings, and warranty paperwork for every unit.

Dense with corporate campuses, business parks, and multi-tenant office buildings around the Irvine Spectrum and Great Park areas — heavy RTU counts and tight PM windows.

RTU & Split Installs for commercial properties in Irvine, California

How rtu & split installs work plays out in Irvine

Walk the roof of a three-story flex building off Alton Parkway or Barranca Parkway and you will usually find eight to twenty packaged units, all the same brand, all installed in the same year, now 20 to 25 years in. Replacing them one at a time as each dies means a crane mobilization, a street or parking closure, and a permit every few months. Sequencing them is the better project: survey every unit, rank them by condition and tenant criticality, then replace in two or three groups so one lift handles several units and the tenants hear about one weekend of noise instead of six.

Irvine's planning and building process is orderly but not fast, and most buildings sit under landlord rules that are stricter than the city's. Expect a roof structural review for anything heavier than the existing unit, matched curb adapters because original curbs rarely line up with new footprints, a Title 24 acceptance test on economizers and controls, and a crane plan that respects both the fire lane and the property manager's parking map. Around the Irvine Business Complex, John Wayne Airport proximity can add a crane height notice for taller lifts, so we check that early rather than on lift day. Our Title 24 and permits guide covers the paperwork in more depth.

The install itself should be uneventful. Units arrive the morning of the lift, old units come down, new ones set, and the crew spends the rest of the day on electrical, gas, condensate, controls, and startup. Tenants come in Monday to a building that is quieter and holds setpoint. See commercial RTU replacement for how we structure these as a project rather than a string of emergencies.

Irvine's climate and what it does to this equipment

Irvine sits in the central basin, warm in summer with moderate humidity and little salt exposure. Cooling hours are high and rooftop condensers work hard in September heat, so spring condenser cleaning and economizer checks pay off.

For the equipment background behind this page, read our commercial rooftop unit guide or the full RTU & Split System Installs service page.

Where this work shows up in Irvine
  • Irvine Spectrum and Great Park
    Retail, entertainment, restaurants, and newer office and medical development with heavy kitchen and refrigeration loads.
  • Irvine Business Complex (near John Wayne Airport)
    Dense mid-rise office, flex, and light-industrial space, with older RTU populations and tight rooftop access.
  • University and Technology corridors
    R&D, lab-adjacent, and tech tenants where uptime and temperature control matter.
  • Sand Canyon and Alton business parks
    Multi-building office and flex campuses with many near-identical rooftop units.
What this service covers
  • Site survey covering load, airflow balancing, and duct condition
  • Clean rigging with code-correct gas, electrical, and condensate work
  • Startup readings documented and stored in the Portal
  • DaVinci Portal included: asset QR tag + warranty paperwork on file
What a rtu & split installs visit includes, and the problems we most often find
  1. Site survey — existing curb/duct compatibility, load, and airflow requirements
  2. Equipment selection sized to actual load and hours of operation, not just square footage
  3. Crane scheduling and rigging coordinated for roof access
  4. Install with code-correct gas, electrical, and condensate work
  5. Startup readings taken and documented; warranty registered in the Portal
  • Undersized or oversized replacement units causing short-cycling or poor comfort
  • Curb mismatches that turn a 'simple swap' into a bigger job mid-install
  • Duct transitions that don't match the new unit's airflow requirements
  • Aging units on refrigerant types that are getting harder and more expensive to service

RTU & Split Installs in Irvine: questions we get

Our Irvine landlord requires a roof protection plan and insurance certificates before any crane work. Is that something you handle routinely?
It is standard for institutional landlords in Irvine, and we treat it as part of the scope rather than a surprise. We provide the certificate language the property asks for, a roof protection plan showing walk paths and lift zones, and a lift schedule the manager can circulate to tenants. The crane company's own documentation is folded in. Getting those approved usually takes longer than the lift itself, so we start that package as soon as the project is awarded.
Can we replace just the worst rooftop units this year and the rest next year without creating a mismatch problem?
Yes, and phasing is often the right answer for a multi-unit Irvine roof. The important part is deciding the full plan now: unit selection, curb adapters, controls strategy, and electrical capacity, so the second phase is a repeat of the first rather than a new design. We tag the remaining units with their condition and projected timing so the budget conversation next year starts from data, not from whichever unit happened to fail last.
Do you handle the crane pick and rigging?
Yes — we coordinate crane scheduling, rigging, and roof access so the install stays on schedule and code-compliant.
Can you match an existing curb or duct layout?
In most cases yes. We'll confirm curb compatibility and duct transitions during the site survey before quoting.