HVAC Design

Small temperature errors become large cooling-energy errors when ΔT is low. Check the sensor pair, flow installation and complete measurement chain before trusting totals.

A practical guide to remote DP sensors, branch pressure requirements and stable reset logic for variable-flow chilled-water pumps, with a worked pressure example.

A reliable staging sequence compares feasible plant combinations, protects evaporator flow and waits for stable evidence before switching. Start with measured load.

Warmer chilled water can reduce compressor work, but coils still need to cool and dehumidify. Set reset limits from air-side performance, flow and plant trends.

Size chilled-water buffer volume from minimum cooling output, low-load demand and permitted temperature swing, then verify active volume and manufacturer limits.

A practical guide to sizing toilet exhaust, providing transfer air, routing ducts and selecting a fan that delivers the required airflow.

Upload MEP and HVAC PDF drawings, let AI prepare the quantities, then review, price and export your BOQ. See how NexBOQ works, what it saves and what it costs.

A new 100-page, 20-chapter handbook for MEP/HVAC engineers covering hydronic, refrigerant, fire protection and plumbing pipe design and sizing — with formulas, worked examples, and code references.

Explore Nexora’s 261-page chilled-water design handbook: 30 chapters covering chillers, piping, pumps, controls, worked examples and commissioning.

Bring pipe losses, fittings, equipment resistance and pump duty into one editable Excel workflow. Explore Nexora’s Pump Head Calculator Design Suite.

Explore a practical 25-chapter PDF handbook covering airflow, duct sizing, pressure loss, fan ESP and worked office, villa and large-AHU designs.

New to HVAC? Follow a clear roadmap from heat transfer and psychrometrics to cooling loads, equipment, ductwork, controls and commissioning.

Heat pumps are highly efficient, but cheap gas can still produce a lower heating bill. Use this worked comparison to find the break-even point for your home.

Smart dampers and AI controls direct air where it is needed, reduce fan pressure and can substantially reduce HVAC energy use when correctly designed.

Compare steel and fabric HVAC ducts, including airflow, installation, condensation, applications, design checks and where textile ducting makes engineering sense.

Learn the complete duct-pressure workflow: size each section, calculate straight and fitting losses, identify the critical path, determine AHU external static pressure, and select the fan duty.