A Unified, Standards-Certified Platform for HVAC Equipment Selection and Lifecycle Costing

Heating, ventilation, and air-conditioning (HVAC) equipment selection sits at the origin of the building-energy performance gap — the persistent divergence between specified and delivered performance. Incumbent practice relies on spreadsheets and disconnected vendor-specific selectors that fragment certified performance data, defeat auditability, and decouple first-cost selection from lifecycle value.

This paper presents the architecture, computational methods, and field evidence of the MileSoft HVAC software suite — a unified, standards-certified platform organised around a single governed certified-curve engine that serves six interoperating modules: AHU, FCU, ERV, Chillers, DX systems, and Lifecycle Cost Analysis (LCA). The platform binds every selection to AHRI-, EUROVENT-, and Indian-Standard-certified ratings; provides governance and lifecycle management with versioned libraries, role-based workflows, and audit trails; and delivers a management-information and business-intelligence layer.

A production deployment at a EUROVENT-certified AHU manufacturer reduced selection-cycle time by approximately 70%, eliminated audit findings, tripled per-engineer proposal throughput, and improved proposal-to-order conversion by 12%. The paper also proposes a capability reference framework against which selection and lifecycle-costing platforms can be evaluated.