AC Replacement & Installation in Encino, CA

Zoning Is the Real Design Question

Encino's large homes and severe summer heat combine to make zoning the decisive factor in whether a cooling system performs well. A single system serving a big two-storey house will always struggle: heat rises, upstairs rooms gain more from the roof, west-facing rooms take the worst of the afternoon, and one thermostat somewhere in the middle cannot represent all of it.

The result is the complaint we hear most often here — the downstairs is fine and the upstairs is unbearable, or one wing never cools while another runs cold. That is almost never fixed by installing more capacity. It is fixed by dividing the house into zones that are each controlled and conditioned according to their own load.

Getting the Design Right

The decisions that matter are made before any equipment is ordered:

• Load Calculation Per Zone: Each area sized on its own heat gain rather than dividing a whole-house figure.
• Zone Count and Boundaries: Determined by how the house is built and used, not by floor count alone.
• Ductwork Capacity: Existing ducts checked for capacity and leakage; new equipment on old ducts underperforms.
• Variable Speed Equipment: Modulating systems handle zoned loads far better than single-stage units.
• Efficiency Modelling: With Encino's run hours, higher SEER2 tiers frequently justify their cost.
• Electrical Capacity: Panel capacity verified in advance rather than discovered on installation day.