HVAC / Mechanical Engineering Design
Comfort, Efficiency &
Code Compliance
From load calculations to construction documents, our ASHRAE-certified designers (CHD) engineer complete mechanical packages for residential, commercial, and industrial facilities of any scale. Every system is sized for real occupancy and climate conditions, coordinated across trades, and documented to IMC, IECC, and ASHRAE standards — so your mechanical set moves through plan check cleanly and performs for decades.
HVAC System Design
We design high-performance HVAC systems tailored to your building’s occupancy, climate, and energy goals — ensuring year-round comfort, code compliance, and long-term operational efficiency for all project types.
- Heating, ventilation & air conditioning system design
- Load calculations, duct sizing & equipment selection
- VRF, packaged & split DX, hydronic & water-source heat pump systems
- Ventilation & outside-air design per ASHRAE 62.1 (commercial) and 62.2 (residential)
- Mechanical room, shaft & rooftop unit placement
- Dedicated outdoor air systems (DOAS) & energy recovery
HVAC Upgrades & Replacements
Aging HVAC equipment reduces comfort and increases operating costs. CoreX evaluates existing conditions and delivers practical upgrade solutions that improve system performance and extend building infrastructure life.
- Chiller, boiler & AHU replacement design
- Cooling tower & chilled water riser upgrades
- Fan coil unit & VAV system redesign
- Phased upgrade planning to minimize occupant disruption
- Controls & building automation integration
- Performance assessment of existing HVAC infrastructure
Central Plant Design
CoreX provides expert central plant engineering for buildings requiring dedicated heating and cooling infrastructure — delivering efficient, reliable, and code-compliant boiler and chiller plant solutions for new construction and major renovations.
- Boiler plant & chiller plant engineering
- Fuel & gas conversion design
- Cogeneration (CHP) system evaluation & design
- Condenser water & cooling tower coordination
- Central plant capacity & redundancy planning
- Compliance with IMC & local mechanical codes
Energy Modeling & Compliance
Our energy modeling services integrate sustainability into the design process from day one — optimizing system selection, reducing lifecycle costs, and ensuring full compliance with energy codes and green building certification requirements.
- IECC, ASHRAE 90.1 & Title 24 compliance
- Building energy simulation & load analysis
- LEED & sustainable design support
- System optimization for energy cost reduction
- Green building certification documentation
- Peak load analysis & equipment right-sizing
Independent Review & Construction Support
Beyond design, CoreX brings independent review and construction-phase support to your projects — peer review of mechanical documents, plan review support for city projects, and construction administration that keeps designs accurate, code-compliant, and buildable from permit through construction.
- Peer review of HVAC / mechanical design documents
- Plan review support for city projects
- Construction administration support (RFIs, submittals & shop-drawing review)
- Code compliance and constructability review
- Value engineering & cost-reduction review
- Plan-check comment response and resubmittal
For plan-review services on city projects, the client must be certified by ICC as a Mechanical Plans Examiner.
Industry-standard software ensuring precision, accuracy, and code compliance across all HVAC deliverables.
Quick answers about how we deliver mechanical design support.
Architectural floor plans (CAD or Revit), the building’s use and occupancy, project location, and any owner or jurisdiction requirements. From there we confirm scope, deliverables, and milestones — typically within one business day — and begin with load calculations and system selection.
Yes. We run detailed block and room-by-room heating and cooling loads using Carrier HAP or Trane TRACE 3D+ for commercial loads and an ACCA Manual J tool (Elite RHVAC) for residential — so equipment is right-sized, never rule-of-thumbed. Calculation reports are included with every deliverable.
All common commercial and residential systems: packaged rooftop units, DX splits, VRF/VRV, hydronic boiler and chiller plants, water-source heat pumps, and dedicated outdoor air systems. We recommend the system that best fits your building’s loads, energy goals, and budget — and explain why.
Energy compliance is built into the design, not bolted on at the end. We document IECC and ASHRAE 90.1 compliance — including COMcheck reports and Title 24 where applicable — and support LEED and green building documentation when your project requires it.
Yes. Many of our clients are consulting firms and architects who bring us in for overflow or full-scope mechanical work. We produce to your templates, title blocks, and standards so the set reads as your own, and we coordinate directly with your project leads throughout.
CoreX works as a design support partner: we produce the complete load calculations and construction documents, and the licensed engineer of record for your project reviews and seals the final set. You stay fully in control of the engineering responsibility while we carry the production load.
Mechanical never stands alone. We model in BIM alongside electrical, plumbing, and structure, resolving conflicts in equipment placement, duct and pipe routing, and clearances while the design is still on screen — so what we deliver is already coordinated, not a source of field RFIs.
Yes — we respond to mechanical RFIs, review submittals and shop drawings against the design intent, and issue clarification sketches and revisions as construction progresses.
Sectors we design HVAC / Mechanical for
Have a Project in Mind?
Core Engineering. X-pert Execution.
Tell us your scope and timeline — we’ll confirm deliverables and milestones, usually within one business day.