HVAC qualifies for Section 179 but diagnostic generates in Lacerte.

[DSellers]

A commercial real estate client has a new HVAC system installed that should qualify for Section 179

[TaxGuyBill]

What does the diagnostic say?

It only qualifies for Section 179 if the rental rises to the level of a "Trade or Business".

[DSellers]

Invalid method for Section 179 (39 year property).  This is a commercial rental shopping center.  It rises to that level.

[TaxGuyBill]

I'm a ProSeries user, so I can't help directly with Lacerte, but are you sure you entered the correct type of asset?  You can't enter it as a regular improvement to the property.  You need to indicate it it is the category for HVACs, Roofs and Fire/Alarm/Security Systems.