HVAC Case Study

    How a leading HVAC manufacturer cut selection cycles by 70% with MileSoft

    An EUROVENT-certified AHU manufacturer replaced an Excel + Word selection process with MileSoft's HVAC Selection Suite — and shipped accurate, branded proposals in hours instead of days.

    8 min read MileSoft Engineering TeamPublished 12 May 2026
    Client
    HVAC Manufacturers
    Industry
    HVAC OEM
    Geography
    India

    Outcomes

    Measurable results

    Headline metrics from the deployment.

    70%
    faster selection cycles
    0
    audit findings since rollout
    3×
    more proposals per engineer / month
    12%
    uplift in proposal-to-PO conversion

    The Challenge

    What needed solving

    • Selection process spread across Excel sheets, vendor catalogs, and tribal engineering knowledge — every project required 3–5 days of cross-checking.
    • Quotations regularly missed sub-components or used outdated pricing, leading to margin leaks and post-PO disputes.
    • Audits were painful: no audit trail of which performance numbers were used or when.
    • Sales engineers in 4 regional offices each kept their own version of the calculator — different teams shipped different specs for the same project.

    Our Approach

    How we delivered

    • Replaced spreadsheets with the MileSoft AHU Selection Software as the single source of truth, hosted on the client's intranet.
    • Loaded their full coil, fan (3rd party fan suppliers), and damper libraries; mapped each item to certified performance curves.
    • Layered the Lifecycle Cost Analysis module so engineers could compare equipment options on TCO, not just first cost.
    • Built role-based workflows so sales engineers configure, technical leads approve, and procurement auto-generates BOMs.

    The Solution

    MileSoft products deployed

    Modular pieces that plugged into the client's stack.

    AHU Selection Software

    Drag-and-drop section design with EUROVENT/AHRI-certified coil (3rd party coil suppliers) and fan performance, a live schematic with one-click 2D CAD export, SAP-coded auto-generated BOM, and branded submittal output.

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    FCU Selection Software

    Fan Coil Unit selection with certified performance data — extending the same engineering rigor to terminal units.

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    Chiller Software

    AHRI 550/590-compliant chiller selection with IPLV/NPLV part-load analysis for accurate efficiency claims.

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    Lifecycle Cost Analysis

    Multi-year TCO comparison across equipment options — a powerful sales lever in efficiency-driven tenders.

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    Stack

    Technical building blocks

    Windows / Web basedAHRI 410 / 430 / 550-590 calc modulesSAP integration (BOM export)Active Directory SSO

    "Selection used to be the bottleneck of our entire sales motion. With MileSoft, what took my team a week now takes an afternoon — and our submittals are tighter, more accurate, and audit-ready out of the box."

    Engineering Director, HVAC Division
    Tier-1 HVAC Manufacturer

    FAQ

    Frequently Asked Questions

    Common questions about this engagement and MileSoft's approach.

    How long did MileSoft AHU Selection Software take to implement at HVAC Manufacturers?

    The full implementation — library loading, user onboarding, and SAP BOM integration — completed in 6 weeks. Engineers were generating certified submittals independently within the first two weeks of going live.

    What HVAC standards does the MileSoft selection suite support?

    The suite supports AHRI 410 (coils), AHRI 430 (fan performance), AHRI 550/590 (chillers), and EUROVENT certification requirements. All selection outputs carry traceable references to the underlying certified data.

    Can the MileSoft HVAC suite handle multiple regional offices?

    Yes. The platform is deployed on a central intranet server with role-based access. All regional offices use the same library and submit through the same approval workflow — eliminating version drift between offices.

    How does MileSoft handle library updates when R&D releases new coil families?

    The engineering admin loads the new certified curves once, and all active projects immediately see the updated library. Engineers selecting from a coil family that has been updated get a notification; historical selections retain their snapshot data for audit continuity.

    Does MileSoft offer Lifecycle Cost Analysis for HVAC equipment comparison?

    Yes. The Lifecycle Cost Analysis module integrates directly with the AHU, FCU, chiller, and DX selection engines. When a selection changes, the LCA updates automatically — producing a 15-year TCO comparison with NPV and payback calculations ready for board-room presentation.

    Technical Research

    Want the engineering details behind these results?

    Read the full research paper — architecture, computational methods, governing standards, and worked numerical examples.

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