Goodman 4 Ton HVAC Installation Scope Example Los Angeles

Example Goodman HVAC Scope for Los Angeles Homeowners

If you are comparing HVAC proposals in Los Angeles County or Orange County, a written scope matters as much as the equipment list. This page is an example planning guide for a Goodman 4 ton split system replacement, not a completed project story. It is meant to help homeowners review what should be included before signing an estimate with any contractor.

Home Upgrade Specialist, CSLB #1031989, recommends starting with load calculations, duct review, permit planning, and clear exclusions. A 4 ton system is not automatically correct because the old unit was 4 ton. Proper sizing should be based on a Manual J review, house layout, insulation, windows, orientation, airflow, and duct performance.

For related planning resources, see HVAC estimate guidance, AC replacement cost in Los Angeles, HVAC services, and project examples.

Example installation planning should cover equipment, airflow, and permit details.

Equipment Example Included in This Scope

This example scope uses the exact equipment set below. Final compatibility, availability, and AHRI matching should still be confirmed at the time of estimate.

Component	Model and details
Furnace	Goodman GR9S80-U, model GR9S800804BUA, 80% AFUE, single stage, multi-speed ECM motor, upflow/horizontal, Ultra-Low NOx, R-32 refrigerant application, 80,000 BTU, 33-3/8 x 17-1/2 x 28.
Outdoor AC	Goodman GLXS4B single-stage AC, model GLXS4BA4810A, R-32 refrigerant, up to 15.2 SEER2, 4 ton, 35-3/4 H x 35-1/2 W x 35-1/2 D, 10-year parts limited warranty when eligible and registered per manufacturer terms.
Evaporator coil	Goodman CE-D-R32 cased upflow/downflow coil, model CE60D3D-210R-165, non-bleed AC/HP TXV for R-32 refrigerant.

Homeowners should also ask whether the proposal includes a new pad, safety float switch, condensate accessories, disconnect, whip, filter base if needed, and thermostat compatibility.

What the Installation Scope Should Cover

A useful HVAC proposal explains what will be removed, what will be installed, and what conditions may change the price. For this Goodman system, the written scope should generally include the following items:

Removal and legal disposal of existing furnace, coil, condenser, and related materials.
Installation of the new Goodman furnace, evaporator coil, and condenser in the agreed locations.
Connection to existing ductwork where suitable, with note that damaged, undersized, leaking, or inaccessible ducts are excluded unless listed.
Line set evaluation for size, condition, length, and routing. Proposal should state whether the refrigerant lines will be reused, flushed, pressure tested, or replaced.
Condensate drain connection, secondary protection where required, and confirmation of proper slope and termination.
Thermostat reconnection or replacement, depending on system controls and homeowner preference.
Electrical disconnect, whip, low-voltage wiring checks, and confirmation that the existing breaker and circuit are suitable.
Startup testing, refrigerant charging procedures, airflow verification, temperature split review, and basic operation walkthrough.
Permit handling and HERS testing if applicable to the specific scope and local code requirements.

💡 Tip: Ask for the installer to identify assumptions about existing duct sizing, return air, attic access, electrical capacity, and condensate routing before work starts.

Many homeowners also compare furnace replacement details and duct sealing or duct replacement options at the same time, especially when comfort problems existed with the old system.

Compare written scopes carefully before approving an HVAC replacement estimate.

Estimate Checklist for a 4 Ton Goodman Proposal

Before approving a bid, confirm these planning items are addressed in writing.

Manual J sizing or other documented load review
Existing duct suitability and return air evaluation
Permit responsibility and inspection process
HERS testing status if required
Thermostat model and included accessories
Line set plan and electrical scope
Warranty terms, registration responsibility, and maintenance expectations
Exclusions for drywall, framing, painting, asbestos, or code upgrades outside the listed scope
Utility or rebate review without guaranteed savings or fixed incentive promises
Financing options on approved credit if needed

If you want a clear written estimate for Los Angeles County or Orange County, call (833) 446-6387 or use the free estimate form.

Schedule a Free Estimate

Assumptions, Exclusions, and Whole-Home Planning

An example scope should clearly state what is assumed to be reusable. Common assumptions include serviceable gas piping, adequate venting path, accessible platform, code-compliant electrical service, and existing ductwork that can support required airflow. If those assumptions prove inaccurate, a change order may be needed.

Typical exclusions may include duct replacement beyond listed connections, attic insulation work, framing repairs, crane service unless noted, roof patching, drywall, painting, permit fees not listed, and hazardous material testing or abatement. In older Los Angeles homes, these details can affect installation planning more than the equipment brand.

Home Upgrade Specialist also helps homeowners think through whole-home upgrades where appropriate, including HVAC, roofing, solar, battery backup, Tesla Powerwall, Enphase battery, EV charger installation, and electrical improvements. Solar, roofing, and battery work should be handled under CSLB #1055444 when those trades are part of the project.

Frequently Asked Questions

Is a 4 ton AC right for every larger home?

No. Square footage alone is not enough. Manual J sizing and duct capacity review are important.

Should the line set always be replaced?

Not always. It depends on sizing, condition, accessibility, and manufacturer installation requirements.

Will permits and HERS always apply?

Requirements vary by city, scope, and code triggers. Your estimate should state what is included.

Can I keep my old thermostat?

Sometimes yes, but compatibility and condition should be confirmed before installation day.

How do I request an estimate?

Call (833) 446-6387 or visit /free-estimate/ for a no-pressure consultation.