I will design your hvac ductwork and manual j load calculation and underfloor heating

United Kingdom

I speak English

Professional engineering

Need flawless, code compliant plumbing and drainage designs? I’m James, an MEP specialist delivering high efficiency water supply and drainage systems for residential and commercial projects. I turn ...
About this Gig

I design efficient, code compliant HVAC systems for residential and light commercial projects including full ductwork layouts, Manual J load calculations, and heating system design.


What I deliver:

  • Manual J heat load calculations (ACCA compliant)
  • Ductwork design and sizing (Manual D)
  • Heating system layout and equipment selection
  • Underfloor/radiant heating design
  • Clear, contractor ready drawings and reports


Whether you're a contractor needing accurate load calcs for permitting, a homeowner planning a renovation, or a builder specifying a new heating system, I'll make sure your design is sized correctly the first time no oversized equipment, no cold rooms, no wasted energy.


I work with residential and small commercial projects and turn around most standard jobs within 3-5 days. Every calculation follows industry standards, so your documents hold up with inspectors and suppliers.


Send me your floor plans or project details and I'll confirm scope before we start no surprises.


Message me and let's get your system designed right.

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.

Other Building Engineering Services I Offer