Home Details
Envelope & Windows
Want a permit-ready, guaranteed size?
We'll run a full on-site Manual J, design it in Diamond System Builder, and register it for the extended Mitsubishi warranty.
DiamondContractor
DiamondManual J–based load estimates tuned for San Diego County climate zones — for central systems and ductless mini-splits.
Why sizing matters: as a Mitsubishi Diamond Contractor, every system we install is modeled in Diamond System Builder and eligible for an extended manufacturer's warranty of up to 12 years when registered. This calculator gets you in the ballpark — a binding install always starts with an on-site load calculation. Get a free estimate →
Home Details
Envelope & Windows
We'll run a full on-site Manual J, design it in Diamond System Builder, and register it for the extended Mitsubishi warranty.