The recently passed Tax Cuts and Jobs Act included a provision to allow HVAC products to be immediately expensed. Under Section 179 Small Business Expensing, all components of a “heating, ventilation, and air-conditioning” system can be expensed in the first year instead of being depreciated over 39 years.
New tax law effective January 1, 2018:
26 U.S. Code § 179 – A taxpayer may elect to treat the cost of any section 179 property as an expense which is not chargeable to capital account. Any cost so treated shall be allowed as a deduction for the taxable year in which the section 179 property is placed in service.
Qualified Real Property applicable includes heating, ventilation, and air-conditioning property.