Identify the neighborhood, then the affected zone
Greenhaven is handled as a Sacramento neighborhood. Include the address and thermostat location, especially when the mailing address alone does not explain which building, floor or unit needs service.
For a replacement comparison, discuss equipment noise and the rooms nearest the outdoor unit as well as efficiency. Comfort includes acceptable sound and practical service access, not just a higher rating on a specification sheet.
For gas & propane wall furnace repair, bring equipment sound and zoning into the scope discussion. Identify the brand, model and fuel before discussing repair or replacement. Williams and other wall-heater product families have different designs and part requirements. Any fuel conversion must use approved equipment-specific methods and qualified installation.