Definition — builder-grade vs right-sized
Builder-grade systems meet the minimum to close escrow. Right-sized systems match Manual J loads, real duct performance, and how your household actually uses rooms (home offices, ADUs, upstairs zones).
When this guide applies
Use this if you live in a master-planned community (Rivermark, Harlan Ranch, Monta Vista tracts, Silver Creek–area planned streets, and similar) and you are replacing original or second-generation HVAC.
- Original outdoor unit approaching end of life
- Uneven rooms despite “working” AC
- Considering heat pump conversion
- HOA rules still apply to outdoor placement
Failure modes in planned communities
Watch for:
- Same-tonnage swaps that ignore duct leakage and upstairs gain
- Skipping Title 24 documentation on changeouts that require it
- HOA screening conflicts discovered after equipment arrives
Homeowner requirements checklist
Ask bidders to include:
- Load calculation (not just nameplate matching)
- Duct inspection / leakage notes
- Title 24 compliance path when applicable
- Quiet outdoor equipment options for dense lots
- Active CSLB license (verify ours: #1056688)
Proof
Precision Heating & Cooling evaluates planned-community changeouts across San Jose, Santa Clara, Sunnyvale, Cupertino, Los Gatos, Palo Alto, and Clovis. Call (408) 642-8674 to schedule a diagnostic visit.
FAQs
Should I match my old tonnage?
Not automatically. Builder sizing and your home’s current duct/envelope condition may not match. A load calc is the right starting point.
Does Title 24 always apply to replacements?
It depends on the scope and jurisdiction. Your contractor should state the compliance path in writing before work starts.