https://airselect3d.com/blog/ AHU selection, Eurovent ECP-05-2026, ErP compliance, SFP and heat-recovery engineering articles. en https://airselect3d.com/blog/ahu-technical-data-sheet-consultant-checklist-example/ https://airselect3d.com/blog/ahu-technical-data-sheet-consultant-checklist-example/ Sat, 04 Jul 2026 12:00:00 GMT The exact data a bureau d'études expects on an AHU technical data sheet — ErP 1253/2014, ECP-05-2026 class, EN 1886, acoustics — with a full 15-page example PDF to download. https://airselect3d.com/blog/octave-band-sound-power-ahu-lwa-summing/ https://airselect3d.com/blog/octave-band-sound-power-ahu-lwa-summing/ Sat, 04 Jul 2026 12:00:00 GMT How octave-band sound power levels are logarithmically summed and A-weighted into the LwA figure consultants ask for - with a full worked example. https://airselect3d.com/blog/plate-vs-rotary-heat-recovery-efficiency-leakage-frost/ https://airselect3d.com/blog/plate-vs-rotary-heat-recovery-efficiency-leakage-frost/ Sat, 04 Jul 2026 12:00:00 GMT Plate vs rotary heat recovery compared on EN 308 efficiency, EN 13053 leakage classes and frost risk — a climate-based selection guide for AHU sales engineers. https://airselect3d.com/blog/ahu-filter-classes-iso-16890-epm1-epm25-epm10/ https://airselect3d.com/blog/ahu-filter-classes-iso-16890-epm1-epm25-epm10/ Fri, 03 Jul 2026 12:00:00 GMT ISO 16890 replaced EN 779 - what ePM1, ePM2.5 and ePM10 really measure, and which filter class to specify for offices, hospitals and industry. https://airselect3d.com/blog/face-velocity-ahu-casing-sizing-sfp/ https://airselect3d.com/blog/face-velocity-ahu-casing-sizing-sfp/ Fri, 03 Jul 2026 12:00:00 GMT Face velocity (v = q/A) drives casing size, coil selection, filter life and SFP in AHUs - target ranges per component and the real trade-offs. https://airselect3d.com/blog/regulation-eu-2024-1834-fan-ecodesign-2026-2027/ https://airselect3d.com/blog/regulation-eu-2024-1834-fan-ecodesign-2026-2027/ Fri, 03 Jul 2026 12:00:00 GMT Regulation (EU) 2024/1834 replaces 327/2011 - new fan efficiency minimums, fewer exemptions, and the 2026/2027 deadlines that decide AHU fan selection. https://airselect3d.com/blog/how-to-choose-ahu-selection-software-2026/ https://airselect3d.com/blog/how-to-choose-ahu-selection-software-2026/ Thu, 02 Jul 2026 12:00:00 GMT A practical 2026 checklist for OEMs choosing AHU selection software - vendor data fidelity, live Eurovent/ErP compliance, 3D design and export formats. https://airselect3d.com/blog/eurovent-ecp-05-2026-erp-compliance-guide/ https://airselect3d.com/blog/eurovent-ecp-05-2026-erp-compliance-guide/ Wed, 01 Jul 2026 12:00:00 GMT A practical guide to Eurovent energy classes, winter and summer fs-Pref ratios, ErP/NRVU requirements and what an auditable AHU dossier must contain in 2026. https://airselect3d.com/blog/specific-fan-power-sfp-en-16798-explained/ https://airselect3d.com/blog/specific-fan-power-sfp-en-16798-explained/ Tue, 30 Jun 2026 12:00:00 GMT SFP = fan power / airflow in W/(m3/s). How SFP_int is calculated under EN 16798 and ErP, typical class values, and how to stay under the threshold.