I will provide hvac load calculation and duct design using hap
HVAC Cost Estimator and Designer I 1000 plus Projects I 4 Years exp
About this Gig
If you need HVAC design and load calculations, youre in the right place.
Im Hammad, a Mechanical Engineer with 4+ years of experience in the US HVAC market. I provide accurate and energy-efficient HVAC design based on precise load calculations and ASHRAE standardshelping you avoid oversized systems, reduce energy bills, and improve performance.
What This Gig Covers
HVAC Load Calculations
- Cooling & heating load calculations
- Residential / commercial / industrial projects
- Manual J, D & S
- Complete system performance analysis
HVAC Design
- Duct sizing & layout
- Piping sizing & layout
- Equipment selection & placement
- Standard-compliant design (ASHRAE)
Equipment Sizing
- AC units, heat pumps, furnaces & boilers
- Ventilation & fresh-air systems
- Diffusers, grilles, registers & accessories
What You Will Receive
- HVAC Load calculation report (HAP or Manual-J)
- HVAC design layout (PDF/AutoCAD)
- Efficient, optimized, and code-compliant design
Software:
HAP/Revit
Project scale:
Building
Building type:
Residential
•
Commercial
•
Office & workspace
Delivery style preference
Please inform the freelancer of any preferences or concerns regarding the use of AI tools in the completion and/or delivery of your order.
My Portfolio
Other Building Engineering Services I Offer
FAQ
How long will my project take?
Small residential projects are usually completed in 2–3 days. Large commercial or industrial projects may take 3–5 days, depending on complexity.
What information do you need from me?
Please provide: 1. Building drawings (floor plans, sections, elevations) 2. Project location (city & climate zone) 3. Building usage type (residential, commercial, or industrial) 4. Construction details (wall, roof, insulation) 5. Any preferred equipment brands or models
What software do you use for calculations?
I use HAP (Hourly Analysis Program) for accurate load calculations and professional reports. Also Revit 3D on special request.
Can you follow my local building codes?
Yes. I design according to ASHRAE standards and can adapt to local codes if you share the requirements.
Can you work on both residential and commercial projects?
Yes. I have experience with residential, commercial, and industrial HVAC design and load calculations.
How accurate are your load calculations?
My calculations are precise, ensuring your HVAC system is neither oversized (wasting energy) nor undersized (causing discomfort).

