Airwatt Sizing
Base airwatt ranges are drawn from manufacturer specification sheets across major central vacuum brands (Vacuflo, Beam, NuTone, Electrolux, MD). Per-floor adjustments account for the additional suction demand of longer pipe runs and higher inlet counts. Pet and carpet adjustments are conservative estimates — heavily burdened homes may benefit from the higher end of each range.
Waterlift Calculations
Waterlift base values correspond to manufacturer-rated sealed suction for units appropriate to each home size band. The pipe run adjustment of +5 inches per 50 ft above the 100 ft baseline is an engineering estimate based on friction loss characteristics of 2-inch PVC at typical residential airflow rates.
Inlet Count Logic
Inlet counts use a 600–800 sq ft per inlet coverage assumption with a standard 30 ft hose. Consistent with the installer guideline of one inlet per 30-foot hose reach. The formula (sq ft ÷ 700, rounded up) + one inlet per floor above the first produces comparable results.
Cost Data Sources
Cost ranges compiled from Fixr, HomeGuide, and Angi databases (June 2026). Labour reflects national averages for licensed contractors. Regional variation is significant — always obtain local quotes before purchasing.
All calculations are estimates. Unusual layouts, historic construction, or specialty requirements may fall outside these ranges. This tool is designed for homeowner planning purposes only.