Ducted systems are sized on a whole-home load calculation: floor area, ceiling height, insulation, glazing and which zones run at the same time.
Zoning changes everything. If you only condition the living areas by day and bedrooms by night, a smaller well-zoned system can outperform a big single-zone unit - and cost less to run.
We design the zone layout with you during the quote, then recommend the right capacity from the brands we install. Every ducted install carries a 5 year Manufacturers Warranty.