It’s in every set of specifications. It sounds official. And somehow… it still gets ignored. In this Hold for Clarification minisode, we dig into the deceptively simple phrase “install per manufacturer.” It’s the catch-all note that’s supposed to ensure systems perform, warranties hold, and safety isn’t compromised. But too often it turns into a free-for-all in the field. From backwards VAV boxes to missing anchors and voided warranties, we break down how skipping the manual leads to expensive mistakes, finger-pointing, and systems that fail when it matters most. 

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Show Notes 

The phrase assumes: 

• The manufacturer’s instructions are being read  

• Installers understand the requirements  

• Field conditions match tested conditions  

• Following the manual is non-negotiable  

In practice, it becomes: 

• “We’ve always done it this way”  

• Ignored clearances and access requirements  

• Backwards equipment installs (yes, really)  

• Missing anchors, skipped steps, and “good enough” fixes  

Takeaways: 

• Require manufacture cut sheets with shop drawings 

• Inspect before concealment (or at least document with photos) 

• Tie installation checks to commissioning and closeout 

• Trust but verify  

“Install per manufacturer isn’t a suggestion. It’s the instructions you ignored before it failed.” 

This episode is part of our Hold for Clarification series – short dives into the phrases that sound helpful but create chaos in construction documents.