HVAC Support
Package unit HVAC replacement in Los Angeles
Replacing a rooftop or side-yard package unit is not just swapping equipment. HUS plans sizing, access, duct transitions, utility connections, permits and startup before the old unit comes off, so the replacement is right the first time.
Licensed in California · CSLB #1031989 for HVAC · Top 500 Remodeler · Serving Greater Los Angeles
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Rooftop & packaged systems
Direct answer
What should a package unit replacement plan actually include?
A package unit keeps the major heating and cooling components in one outdoor cabinet, usually on the roof, a side yard or a patio pad. Replacing one well means planning the sizing, access, duct transitions, utility reconnects, permits and startup, not just lifting a new box into place.
In Los Angeles and Orange County, a written scope should say how the unit is sized, how it is accessed, and exactly what is included, so you can compare a real plan against a guess.
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Local planning intelligence
What actually matters in a package unit replacement
The planning details that decide whether a rooftop or packaged replacement performs and passes inspection.
Sizing with Manual J
A documented load review sizes the new unit to the home, not just to the old cabinet, so it holds temperature without short cycling.
Right-sized, not rule-of-thumbRooftop & side-yard access
Roof height, unit size and access decide whether a crane or smaller equipment is needed. Access assumptions belong in the scope, not as a surprise.
Duct transitions & sealing
The connection between the unit and the ducts is where leaks and losses hide. Transition work and sealing at the unit are part of a real replacement.
Permits, HERS & startup
Gas, electrical and condensate reconnects, permits, HERS testing, startup and owner orientation are handled inside the scope.
Your HUS Blueprint™
Start with a Blueprint, not a sales pitch.
Answer a few questions about your home and goals. The Planner assembles a home-specific plan you can actually review.
- Address confirmed
- Utility detected
- Home profile added
- System selected
- Rebate path reviewed
- Blueprint ready
What we install & service
Package unit replacement, planned end to end.
Packaged AC replacement
High-efficiency packaged cooling units sized and matched to the home and duct system.
Gas-electric & packaged heat pump
Compare a gas-electric packaged unit against a packaged heat pump for your utility and comfort goals.
Curb, pad, crane & adapters
Whether you can reuse the old curb or pad, or need an adapter, is confirmed before installation.
Duct transition & sealing
Supply and return transitions sealed at the unit so rated efficiency reaches the rooms.
Learn more →Utility reconnects
Gas, electrical, condensate and thermostat reconnects done to code.
Permits, HERS & startup
Permitting, HERS verification, startup testing and owner orientation, documented.
Clean installation
Equipment should fit the home, not the other way around.
Placement, line-set routing, sound levels and sight lines are part of the plan. A recent HUS heat pump installation on the Westside, finished the way it should be.
Equipment
HVAC equipment we review before replacement
Before replacing an AC system, HUS reviews the outdoor condenser, indoor coil, furnace or air handler, ductwork and return air, line set, thermostat and zoning, and the electrical disconnect. Homes with rooftop or all-in-one systems may need packaged-unit planning instead of a standard split. A right-sized plan looks at the whole system, not just the outdoor unit.
What a written replacement scope verifies
| Scope Item | What to Verify |
|---|---|
| Manual J sizing | Load calculation, not rule-of-thumb tonnage |
| Platform or curb | Existing curb dimensions, condition, leveling, adapter needs |
| Duct transitions | Supply and return alignment, sealing, insulation |
| Gas and electrical reconnects | Disconnect, whip, breaker size, flex gas line, shutoff access |
| Permits and testing | City requirements, HERS if applicable, startup checklist |
Estimate checklist for homeowners
- Is Manual J or another documented load review included?
- Does the scope state rooftop or side-yard access assumptions?
- Are curb, pad, crane or adapter costs included or listed as allowances?
- Does it identify duct transition work and sealing at the unit?
- Are gas, electrical, condensate and thermostat reconnects included?
- Does it mention economizer or accessories only if actually applicable?
- Are permit, HERS, startup testing and owner orientation addressed?
- Does it explain warranty registration expectations and exclusions?
Why HUS
One trusted team, one accountable plan.
One team
HVAC, electrical, permits and rebates coordinated by one licensed team. No handoffs between contractors.
Real planning
Every project starts as a Blueprint: sizing, scope, equipment tier and rebate path, documented before work begins.
Licensed work
California licensed and insured. CSLB #1031989 for HVAC.
Manufacturer-backed systems
Equipment from established manufacturers, installed to spec so the warranty means something.
Clean installation
Protected floors, tidy line sets, hauled-away old equipment, and a final walkthrough.
Comfort & Satisfaction Guarantee
The same guarantee that backs every HUS project. Maintenance, tune-ups, and a team that answers the phone after the install.
★★★★★
Real reviews from HUS homeowners
“They were super fast to respond and equally fast in scheduling time to come out. Elia came out to perform my service and inspection. He was incredibly knowledgeable.”
“We are so happy with our decision to use Home Upgrade Specialist for our HVAC install. We live in a 2-story historic craftsman… and a desire to keep its historic integrity.”
“I would give 10 stars if I could. Raymundo A is the real MVP who saved my day… Now I know whom to call if I have any HVAC issues. Highly, highly recommended!”
Questions Los Angeles homeowners ask
Answers, before the site visit.
Do all package unit replacements need a crane?
No. Some can be lifted manually or with smaller equipment, but many rooftop replacements need crane planning based on unit size, roof height and access.
Can I reuse my old curb or pad?
Sometimes, but it depends on dimensions, condition, leveling and compatibility with the new unit. An adapter may be needed.
Is a thermostat included?
Often yes, but the exact thermostat level and any smart control upgrades should be listed in writing.
How do I get started?
Call (833) 446-6387 or use the free estimate form to schedule a package unit review.
Related HVAC pages
Planning a package unit replacement in Los Angeles?
Get a written replacement scope with sizing, access, duct transitions and startup, so you can compare a real plan instead of a guess.