I've worked as a freelance HVAC system designer for over 2 years, implementing mechanical drawings and supervising work.
HVAC System Design
Spreadsheet Skills
Word Processing
AutoCAD HVAC Loads Calculations
Mechanical Design
HAP
Trace 700
Tran Y.
Hanoi, Vietnam
$25/hr
4.9
14 jobs
Hi, I provide HVAC and Plumbing design support for residential and light commercial projects.
I help homeowners, contractors, architects, and engineering teams prepare clear, practical, and well-coordinated MEP drawings for design, permit, and construction use.
My work focuses on accurate calculations, clean construction drawings, practical pipe/duct routing, and coordinated Revit MEP modeling.
◆ HVAC Load Calculations & System Design
I perform HVAC load calculations and system design using Elite Software RHVAC, following ACCA and ASHRAE standards commonly used for residential HVAC design in the U.S.
This includes:
• Manual J – Room-by-room heating and cooling load calculations
• Manual S – Equipment selection based on actual load and design conditions
• Manual D – Duct sizing and layout for balanced airflow
• HVAC equipment layout and basic system design coordination
Deliverables may include calculation reports, equipment sizing summaries, duct layouts, and HVAC permit drawings in PDF/DWG format.
◆ Plumbing Design & Permit Drawings
I also provide plumbing design and drafting support for residential and light commercial projects.
This includes domestic water, sanitary drainage, vent piping, and general plumbing layouts coordinated with architectural and structural drawings.
Typical plumbing scope includes:
• Domestic cold water and hot water piping layouts
• Sanitary sewer and waste piping layouts
• Vent piping layouts and riser diagrams
• Fixture connections and pipe routing
• Water heater, equipment, and fixture location coordination
• Cleanout, floor drain, and plumbing fixture layout coordination
• Basic plumbing schedules and notes for permit drawings
• Coordination with architectural plans, structural elements, and other MEP systems
My goal is to make the plumbing layout clear, buildable, and easy for contractors and engineers to review.
Deliverables may include plumbing plans, riser diagrams, fixture connection layouts, equipment layouts, and permit-ready drawing sheets in PDF/DWG format.
◆ MEP BIM Modeling – Revit HVAC & Plumbing
I develop coordinated 2D/3D MEP models in Autodesk Revit for HVAC and plumbing systems.
This includes:
• HVAC ductwork and equipment modeling
• Domestic water piping modeling
• Sanitary, waste, and vent piping modeling
• Plumbing fixture connections
• MEP coordination with architectural and structural Revit models
• Coordination views and clash review support
• Construction sheets and details for contractors
I can work from architectural PDFs, CAD files, Revit models, sketches, redlines, or engineer markups depending on the project stage.
Typical deliverables include Revit models, MEP plans, coordination views, construction sheets, riser diagrams, and PDF/DWG drawing packages.
Note: I provide design and drafting support. If your project requires a licensed PE stamp, final review and approval should be provided by a licensed Professional Engineer in the project state.
My goal is to provide clear, practical, and well-coordinated HVAC and plumbing deliverables that help move the project smoothly from design to permit and construction.
HVAC System Design
Autodesk AutoCAD
MEP Design
Mechanical, Electrical & Plumbing Systems
Autodesk Revit
AutoCAD HVAC Loads Calculations
Linh K.
Hanoi, Vietnam
$25/hr
4.1
18 jobs
I am a Mechanical Engineer and BIM Specialist with strong experience in architectural, structural, and MEP modeling and drafting. My expertise spans both design and advanced simulation, making me a versatile partner for European and international projects.
BIM & Design Expertise:
- BIM modeling for Architecture, MEP, and Structure
- Detailed design for HVAC and Plumbing systems
- Coordination across disciplines to ensure accuracy and efficiency
Simulation & Analysis:
- Thermal comfort
- Energy consumption
- Daylight performance
- Optimization of building performance to meet sustainability and efficiency goals
Software Proficiency:
- Modeling & Design: Revit, AutoCAD, ACCA Edificius
- Simulation & Analysis: IESVE, Grasshopper, Python
What I Deliver
- Accurate BIM models aligned with project standards
- Energy-efficient mechanical designs tailored to European codes
- Performance-driven simulations to support sustainable building strategies
- Clear communication and reliable collaboration throughout the project lifecycle
HVAC System Design
Mechanical Engineering
Plumbing
Autodesk Revit
Autodesk AutoCAD
BIM Coordination
Energy Simulation
Well
Nguyen N.
Hanoi, Vietnam
$10/hr
4.5
33 jobs
🤗 Hello to everyone! ⭐️I can help you in⭐️
✅ HVAC System Design & Layout
✅ Manual J,S,D - Load Calculations & Equipment Sizing
✅ Ductwork & Piping Design
✅ Energy Modeling & Analysis
✅ Retrofit & Upgrades
✅ Indoor Air Quality Optimization⭐️
✅ Calculate heat flux & simulation;
✅ Make Shopdrawing in Auto CAD | Revit;
✅ Energy modeling and analysis.
So if you want your project done with top quality, with no false results, engineering approach, hire me and leave the rest to Me !!!
Communication is key. I always strive to clearly understand my client's needs before starting any project to make sure we agree with what the final product should be.
Thanks
Nguyen
HVAC System Design
Autodesk Revit
CAD
Mechanical Design
CAD Software
MEP Design
Freecad
Flow Simulation
ANSYS
CFD Analysis
HAP
Psychometrics
AutoCAD HVAC Loads Calculations
Water Treatment Engineering
Tran Duy L.
Hanoi, Vietnam
$15/hr
5.0
53 jobs
***MEP Engineer* / *AutoCAD drafter* / *Revit Modeler* / *BIM Engineer*/ Point Cloud to BIM
Experience designing, Heating, Ventilating and Air Conditioning system, Plumping system, (HVAC), Fire Fighting systems...
Project drawings were drafted under very strict CAD drafting standards to better facilitate contractor understanding of our project drawings. I have participated in all stages of projects from the schematic design phase to the end of construction. ( Design - Shop drawings - As-Built drawings)
***Calculate heat load and use limited specialty software: VRV express, duct check, Ashrae Duct Fitting Database, pipe check...
***I am familiar with the following software:
1) Autodesk AutoCAD 2021, 2022 & 2023
2) Autodesk Revit 2021, 2022 & 2023
3) Autodesk Naviswork 2022
4) MS Office (MS Word, Excel, PowerPoint)
***The primary services I offer are:
1) Design Heating, Ventilating and Air Conditioning systems for existing and new projects.
2) Shop drawings, AS-Built drawings: AutoCAD, Revit MEP Software.
3) Coordinate building-arc and system by Naviswork.
4) Contractor bid estimating. (Pickup material... )
5) Covert PDF file, image file... to AutoCAD / Revit.
6) Model 3D Revit from 2D drawings.
7) Make model LOD 200-350 from Point Cloud.
HVAC System Design
Autodesk Revit
Autodesk AutoCAD
CAD Drafting
Engineering & Architecture
Autodesk BIM 360
BIM Coordination
Building Information Modeling
Mechanical Design
Plumbing
AutoCAD HVAC Loads Calculations
Mechanical Engineering
BIM Family Creation
2D Design & Drawings
Fire Protection Engineering
Chien N.
Hanoi, Vietnam
$15/hr
5.0
1 jobs
I'm a Mechanical engineer experienced in industrial plant at supervisor and designer position. I worked at Petrol chemical and refinery plant and Thermal power plant. However, I also have experience in piping system equipment such as valve, pump, tank, instrument, spare part,... Whether you're looking for a reliable member in your team, I can co-operate in long time.
Mechanical Engineering
CAD
Modeling
Energy
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