h2x adds ASHRAE 183-compliant HVAC load calculations

h2x says its cloud MEP platform now meets ANSI/ASHRAE/ACCA Standard 183 for peak cooling and heating load calculations, and pairs that with CIBSE-verified system design. The company says the update is available at no extra cost and positions h2x as the only cloud-based all-in-one MEP design tool with both credentials.

Why it matters: - ASHRAE 183 compliance gives plan reviewers and design teams a common benchmark for HVAC load calculations across software platforms. - The standard is referenced by energy codes, green building rating systems and procurement specifications. - The combination of ASHRAE 183 compliance and CIBSE verification is meant to reduce review friction and improve trust in building design outputs.

What happened: - h2x announced that its load calculation engine complies with ANSI/ASHRAE/ACCA Standard 183-2024, Peak Cooling and Heating Load Calculations in Buildings Except Low-Rise Residential Buildings. - The company published a section-by-section compliance statement showing how the platform meets each requirement of the standard. - h2x says the platform is the only cloud-based, all-in-one MEP design platform with both ASHRAE 183-compliant load calculations and CIBSE Software Verification Assessment validation for system design calculations. - The new capabilities are available at no additional cost to all h2x users with a design seat.

The details: - To meet Standard 183 requirements, h2x added separate sensible and latent heat load calculations. - The platform now includes hourly analysis of design days and psychrometric analysis. - h2x also added equipment sizing within the load calculation workflow. - Engineers can specify thermal properties of building materials to model thermal lag and heat transfer through walls, floors, ceilings and roofs. - The platform keeps load calculations fully synced with system design, so a change to either updates both. - h2x also produces branded documentation, bills of materials and 3D model exports to Revit and AutoCAD.

Between the lines: - The announcement targets firms that still rely on spreadsheets or older software for load calculations and system design. - h2x is using compliance and verification credentials as a competitive differentiator in a crowded MEP software market. - The company is also trying to frame speed as a design advantage, not just a software feature. - In customer benchmarking, engineering firms using h2x report design time reductions of 50% or more compared with legacy platforms and manual spreadsheets.

What's next: - h2x will likely use the new compliance status to push adoption with firms responding to code, rating-system and procurement requirements. - The company may also use the update to expand use of its unified workflow across design, calculation, compliance and documentation. - h2x directs readers to more information.

The bottom line: - h2x is betting that verified compliance and tighter workflow integration will help it win over engineers who want faster load calculations without leaving a single cloud platform.