HVAC Design | Loads, Duct/Hydronic, IAQ & BMS | BuildSmart TechBIM
• Energy-smart & IAQ-focused

HVAC Design

BuildSmart TechBIM delivers end-to-end HVAC design that is energy-smart, code-compliant, and installation-ready. We connect load analysis, equipment sizing, duct/hydronic routing, controls philosophy, and commissioning requirements into one coordinated package. Our designs respond to Chennai/Tamil Nadu climate realities—high heat, humidity, coastal corrosion, and grid variability—so comfort and efficiency hold year-round.

From concept to construction documents, we integrate the architecture’s envelope, occupancy profiles, and process loads with MEP and BIM coordination. We evaluate system options—VRF/VRV, chilled water, DX, radiant, DOAS with energy recovery—balancing OPEX/CAPEX, serviceability, and acoustic performance. Outputs include detailed schedules, layouts, schematics, and specification notes aligned to your standards and authority submissions.

For hospitals, labs, and data centers, we design with enhanced filtration, pressure regimes, redundancy, and monitoring. For offices, retail, and hospitality, we focus on IAQ, low noise, zoning flexibility, and controls that track occupancy and daylight. Every package is prepared for smooth installation: clear access, maintenance zones, supports/hangers, and builder’s work openings coordinated in BIM.

What You Get with HVAC Design

Cooling & Heating Load Analysis

Room-by-room/zone loads with envelope, people, lighting, equipment and ventilation—diversity and safety factors applied.

System Selection & Sizing

VRF/VRV, DX, chilled water (AHU/FCU), DOAS/energy recovery, pumps, towers, boilers—right-sized for lifecycle cost.

Duct Design & Air Distribution

Static pressure, velocity profiles, diffuser selection, noise criteria (NC), balancing, and fire/smoke damper placement.

Hydronic Network Design

Primary/secondary circuits, pipe sizing, pump head calculations, valves, strainers, expansion and chemical treatment.

Ventilation & IAQ Strategy

Outdoor air rates, filtration/MERV, energy recovery, pressurization, exhaust/relief, and compliance with authority norms.

Controls & BMS Integration

Sequence of operation, zoning logic, sensors/meters, scheduling, demand control ventilation, and BACnet points lists.

Deliverables & Outcomes

Deliverables: Cooling/heating load reports; system selection memo; AHU/FCU/VRF schedules; schematic flow diagrams (air/hydronic); coordinated plans/sections with builder’s work openings; duct and pipe sizing sheets; ESP/pump head calculations; diffuser/grille layout and schedules; valve and instrumentation lists; controls sequence and BMS I/O; BOQ/quantity take-offs; specification notes and equipment datasheets.

Outcomes: Stable comfort, reliable IAQ, quieter spaces, lower energy use, fewer RFIs, faster approvals, and installation that fits first time—no surprises during testing and commissioning.

Industries & Use-Cases

Corporate offices, IT parks, retail & F&B, hotels, hospitals & clinics (pressure & isolation), education, logistics/warehousing, industrial production spaces, clean zones, and data centers across Chennai & Tamil Nadu.

How We Work

  • 1) Brief & Criteria: Design conditions, usage, IAQ/performance targets, codes, and authority requirements captured.
  • 2) Loads & Options: Room/zone loads; system options compared on CAPEX/OPEX, flexibility, acoustics, and maintenance.
  • 3) Layouts & Calculations: Duct and hydronic networks sized; ESP/pump head; access, supports, and tolerances defined.
  • 4) Coordination: BIM-based routing with Architecture/Structure/MEP; clashes resolved; builder’s work scheduled.
  • 5) Documentation: Drawings, schedules, specs, and BOQs issued for tender; authority submission sets compiled.
  • 6) Commissioning Support: Pre-functional/functional test sheets, TAB guidance, and BMS sequence validation.

Why BuildSmart TechBIM

  • Climate-aware engineering: Designs tuned for Chennai heat/humidity and salt-air durability.
  • Installability first: Access, maintenance zones, and realistic supports modeled—not assumed.
  • Energy-smart choices: DOAS + ERV, DCV, staging, variable flow, and high-efficiency selections by default.
  • BIM-native coordination: Clash-free routes, tidy openings, and sheet sets that pass reviews faster.
  • Lifecycle focus: Controls logic and metering that keep OPEX predictable and IAQ measurable.