I will do manual j heat loss calculation hvac load calculation and heat pump sizing
Fire Safety Plans And Emergency Evacuation Design Specialist
About this Gig
Are you a contractor needing an accurate HVAC design for a building permit? Or a homeowner upgrading to an energy efficient heat pump?
I provide professional Manual J heat loss and heat gain calculations to determine the heating and cooling requirements of your building. My calculations help contractors, builders, homeowners, architects, and HVAC professionals select properly sized heating and cooling equipment instead of relying on guesswork.
Using industry standard HVAC calculation methods and professional software where applicable, I can assess room by room heating load, cooling load, heat loss, heat gain, design conditions, infiltration, ventilation, windows, doors, walls, floors, ceilings, insulation, and construction details.
I provide comprehensive, code compliant residential and commercial heat loss calculations tailored to your specific regional standards (Manual J / CIBSE / EN 12831).
Services include:
- Manual J load calculation
- Heating & cooling load
- Heat loss & heat gain
- Room by room calculations
- Heat pump sizing
- HVAC equipment sizing
- Manual S & Manual D
- HVAC load report
- Permit support
Send your plans and project details to get started.
Project scale:
House
Building type:
Residential
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.
Other Building Engineering Services I Offer
FAQ
Can you size equipment for both heat pumps and traditional boilers?
The heat loss report provides the exact kilowatt (kW) or BTU load required for the property. This data is ideal for perfectly sizing low temperature heat pumps, underfloor heating, traditional gas boilers, and biomass systems.
What software do you use to generate the reports?
I utilize industry leading HVAC design software, such as Wrightsoft, LoopCAD, or advanced engineering spreadsheets to guarantee complete mathematical accuracy and a professional PDF layout.
Which standards and methods do you use for your reports?
I perform calculations using industry standard protocols, including ACCA Manual J (for the US market), CIBSE guidelines (for the UK market), and BS EN 12831 (for European compliance) to ensure your report passes local building inspections.

