Compare Distribution, Zoning and Retrofit Constraints

Start from the floor plan

Mark rooms, levels, doors, open areas and spaces with distinct comfort or schedule needs.

Assess existing ducts

Ask how leakage, insulation, size, return paths, pressure and room delivery are evaluated before reuse.

Map ductless zones

Record indoor-unit location, air path, condensate, line route, electrical supply, service access and visual impact.

Compare hybrid concepts

State which rooms or loads remain on existing systems and how controls and backup interact.

Address sound and appearance

Use current model data and proposed locations; no page can promise silence or uniform comfort.

Normalize maintenance

Compare filters, indoor and outdoor access, cleaning, drainage, controls and owner documentation.

Draw both distribution concepts

For ducted work, map trunks, branches, returns and access; for ductless, map indoor heads, line sets, drains and room transfer paths. Show which rooms remain dependent on existing heat or open doors.

• Include finished-space impacts
• Trace condensate routes
• Record exterior penetrations

Test room-level control

Compare thermostat or head placement, zoning logic, minimum operating behaviour, sound-sensitive locations and occupant routines. Ask how doors, solar gains and different schedules affect delivery rather than assuming a whole-house label means uniform comfort.

• Identify closed-door rooms
• Plan filter access
• Record control ownership

Compare retrofit disruption

List duct alterations, bulkheads, electrical work, wall openings, line-hide routes, drainage, painting and exterior restoration for each path. Separate base HVAC scope from finish work and document who coordinates affected trades.

• Photograph proposed routes
• Price patching explicitly
• Protect future service access

Create the distribution-path decision plan

Draw duct trunks, branches, returns and modifications for a ducted path, and indoor heads, line sets, drains and room transfer paths for a ductless path. Mark rooms dependent on doors, existing heat or future work. Compare controls, sound-sensitive locations, filter and service access, penetrations, finish repairs and trade responsibilities. Attach room-load and airflow evidence used to choose the path. This plan documents practical differences without promising uniform comfort, silence, minimal disruption or whole-home coverage from a system category alone. Before selection, test each distribution concept against closed-door operation, shoulder-season loads, cleaning access and the coldest or hardest-to-serve rooms. Record which comfort limitations remain accepted by the owner.

• Show closed-door rooms
• Trace condensate routes
• Price finish work
• Protect filter access
• Record control zones