Fluence Design

Turn the dials. Every property updates live. Fluence is the HVAC design calculator built for the office and the field—a single, tactile workspace that replaces jumping between apps and spreadsheets. Fluence includes a permanent free tier. Features identified below as Fluence Pro require a separate auto-renewable subscription. A free trial may be available to eligible new subscribers. Price and trial terms are shown before purchase. PSYCHROMETRICS Fluence Free includes State 1 psychrometrics. Enter any pair of properties and watch dry-bulb, wet-bulb, dew point, humidity ratio, enthalpy, specific volume, and relative humidity update in real time. Elevation-corrected ambient outdoor conditions are available with one tap. States 2–4 and state-to-state load calculations require a separate Fluence Pro subscription. MIXED AIR — FLUENCE PRO SUBSCRIPTION REQUIRED Blend two air streams and immediately see sensible, latent, and total air-side loads for coil estimates. Ideal for field checks and design iterations. FAN & PUMP AFFINITY Included with Fluence Free. Change speed, flow, pressure, or power and see the before-and-after operating points. Classic affinity laws, presented clearly. DUCT & PIPE SIZING Fluence Free includes round and rectangular duct sizing up to 1,000 CFM, plus core pipe sizing materials and ranges. Flat-oval duct, duct sizing above 1,000 CFM, liquid flows above 50 GPM, and the complete selection of fluids, materials, sizes, and ranges require a separate Fluence Pro subscription. PDF REPORTS Included with Fluence Free. Generate clean PDF reports you can share or file. Choose sections, add context, and hand results to clients or the office. BUILT FOR REAL WORK • Fully offline except optional Apple Weather ambient conditions and localized elevation • IP and SI units, remembered per preference • English, French, German, and Spanish • No account required • Permanent free tier • Optional Fluence Pro auto-renewable subscription • Fluence Free remains available if a subscription is canceled Designed for HVAC engineers, designers, and technicians who need accurate answers quickly—without leaving the job site. Results are an engineering aid. Always verify with a licensed professional before use in design, construction, or commissioning. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Use: https://fluencedesign.app/terms