Load calculations and equipment
Heating and cooling loads drive equipment sizing so systems fit the envelope, occupancy, and energy path before duct layout begins.
HVAC Engineering
Loads, equipment, and distribution sized to the energy code
Structexa provides HVAC engineering services — heating and cooling load calculations, equipment selection, ductwork, and ventilation design per IMC and applicable energy codes across the USA.
As an HVAC engineering consultant for owners, developers, and design-build teams, Structexa starts with accurate loads. We calculate heating and cooling, select equipment that fits the architecture, and lay out ductwork and ventilation contractors can build.
Our HVAC design services follow IMC and local energy standards, with zoning and controls coordinated to the broader MEP package and Title 24 HVAC inputs where required — so comfort systems clear plan check with fewer revision cycles.
Engage Structexa for dedicated HVAC engineering services alone, or as part of a coordinated mechanical, electrical, and plumbing set with our MEP practice under one project manager.
Expertise
HVAC engineering services we provide
- Heating and cooling load calculations
- HVAC equipment sizing and selection
- Ductwork layout and air distribution design
- Ventilation and exhaust system design
- Controls and zoning coordination
- Energy code and Title 24 HVAC inputs
- Existing system evaluation and retrofit design
- Residential, multifamily, and commercial TI HVAC documentation
HVAC plans, load reports, and permit docs
- Permit-ready HVAC plan sets
- Heating and cooling load reports
- Duct layouts and equipment schedules
- Ventilation calculations
- Sequence notes and plan-check support
- Title 24 HVAC inputs where applicable
Residential, commercial, TI, and institutional projects
- Residential and multifamily HVAC engineering
- Commercial office and retail HVAC systems
- Tenant-improvement comfort upgrades
- Institutional and assembly occupancy HVAC
Codes & standards
Building systems
How we design comfort systems
Ductwork and air distribution
Duct layouts and air distribution detailed for constructability, ceiling coordination, and balanced comfort zones.
Ventilation and energy compliance
Ventilation, exhaust, and Title 24 HVAC inputs coordinated with architectural and MEP assumptions for agency review.
Delivery
How our HVAC engineering process works
Envelope review
Confirm climate, occupancy, and building envelope inputs before HVAC load calculations.
Load & equipment
Run heating and cooling load calculations and select HVAC equipment.
Distribution design
Lay out ductwork, ventilation, exhaust, and zoning for construction documents.
Docs & response
Issue HVAC plans and support energy and agency review through approval.
Common questions
HVAC engineering FAQs
Do you provide load calculations with HVAC plans?
Yes. Heating and cooling load calculations accompany equipment selection, duct layouts, and ventilation design as part of our HVAC engineering services.
Does Structexa provide HVAC engineering services nationwide?
Yes. We deliver HVAC engineering services for building projects across the USA, and can coordinate with Structexa MEP, architectural, and structural practices when a multi-discipline set is required.
Which codes guide your HVAC design?
We design to the IMC and applicable local energy standards, coordinating zoning and controls with the broader MEP package and Title 24 HVAC inputs where required.
Can HVAC be scoped alone or as part of full MEP?
Either. Clients engage us for dedicated HVAC engineering services or as part of a coordinated mechanical, electrical, and plumbing set.
Do you support retrofit and existing-system evaluation?
Yes. Existing system evaluation and retrofit HVAC design are available when upgrades must fit current architecture, structure, and energy requirements.
Work with a licensed engineer
Ready to scope HVAC engineering services for your jurisdiction? Share project type, location, and schedule for a PE review and fee proposal.
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