IRS MACRS depreciation calculator for commercial HVAC systems. Classification depends on whether the unit is personal property or a structural component.
Year 1 Deduction
$14,290
Recovery Period
7 years
Total Depreciation
$100,000
Method
DB/SL
Year
Rate
Deduction
Cumulative
1
14.29%
$14,290
$14,290
2
24.49%
$24,490
$38,780
3
17.49%
$17,490
$56,270
4
12.49%
$12,490
$68,760
5
8.93%
$8,930
$77,690
6
8.92%
$8,920
$86,610
7
8.93%
$8,930
$95,540
8
4.46%
$4,460
$100,000
IRS Classification
IRS Asset Class: GDS 7-year or 15-year QIP depending on installation
Section 179: EligibleBonus Depreciation: Eligible
Key Tax Facts
Rooftop units that are not permanently attached may be 7-year personal property
HVAC that is a structural component of the building is 39-year property
HVAC replacements in existing nonresidential buildings may qualify as 15-year QIP
IRS Rev. Proc. 2019-8 provides safe harbors for HVAC classification
Consult a tax professional — HVAC classification is frequently litigated
What This Covers
Rooftop HVAC units
Split system AC units
Commercial furnaces
Chillers and cooling towers
VAV systems
Common Questions
HVAC classification is one of the most debated areas in business depreciation. Rooftop units that can be removed without damage to the building may be 7-year personal property. HVAC that is structurally part of the building is a 39-year building component. HVAC replacements in existing buildings may qualify as 15-year Qualified Improvement Property (QIP) with bonus depreciation.
Yes. The Tax Cuts and Jobs Act specifically made HVAC, roofs, fire protection, and security systems in nonresidential buildings eligible for Section 179. You can deduct up to $1,160,000 of HVAC replacement costs in year 1 under Section 179.
QIP covers interior improvements to nonresidential buildings placed in service after the building was first placed in service. An HVAC replacement in an existing commercial building typically qualifies as QIP — 15-year property eligible for bonus depreciation.
Tax disclaimer: This calculator provides estimates based on standard IRS MACRS rules from Publication 946. Your actual depreciation deduction may differ based on business-use percentage, the mid-quarter convention, state tax conformity, bonus depreciation phase-outs, and other factors specific to your situation. Always consult a licensed CPA or tax professional before making tax decisions.