ajay das

Designed HVAC systems (Heating, Ventilation & Air Conditioning) for residential, commercial and
hospital projects in India & Middle East as per ASHRAE, ISHRAE, NBC and other standards.
Performed heat load calculations using software tools like HAP or manual methods to determine cooling
and heating requirements.
Selected appropriate HVAC equipment such as AHUs, FCUs, VRV/VRF systems, chillers, and ductable
units based on project requirements.
Prepared detailed HVAC layouts, ducting and piping designs using AutoCAD.
Conducted ESP (External Static Pressure) calculations and selected suitable fans and air handling units.
Designed ventilation systems for car parks, kitchens, and toilets in compliance with international standards.
Prepared BOQs (Bill of Quantities), Technical specifications, and Design Basis Reports.
Reviewed and approved HVAC shop drawings and material submittals from contractors.
Supported site teams during installation and commissioning, ensuring design compliance and quality
standards..
Ensured adherence to safety standards, local codes, and green building requirements where applicable.

Assisted in the design and layout offire protection systems, including fire sprinkler, hydrant, and detection
systems in compliance with NFPA standards.
Conducted basic hydraulic calculations for sprinkler systems to ensure proper pressure and flow.
Participated in site visits for inspection and coordination.
Ensured fire system installation matched approved design drawings and specifications.
Assisted in preparing BOQs, material submittals, and technical documentation for fire protection systems.
Gained exposure to local fire authority regulations and participated in basic compliance checks.

Assisted in the design and drafting of HVAC systems, including duct layouts, chilled water piping, and
ventilation systems, using AutoCAD and Revit MEP.
Performed heat load calculations using HAP and equipment selection (AHUs, FCUs, VRF, exhaust fans)
as per ASHRAE/ISHRAE standards.
Participated in site visits to monitor HVAC installation work.
Prepared Basis Of Design Reports and Equipment Schedule for client approval.
Gained exposure to electrical systems and fire protection systems drafting and layout review.

Interacted with customers to understand vehicle issues and service requirements
Prepared job cards and provided estimates for repairs and maintenance
Coordinated with workshop technicians to ensure timely and accurate service delivery
Performed mechanical tasks such as oil changes, filter replacements, and basic diagnostics
Followed up with customers on vehicle status and ensured on-time delivery
Maintained service records and resolved basic customer complaints professionally