The intersection of HVAC investments and bonus depreciation under the CARES Act can significantly shorten the payback period for business owners. This article explains how bonus depreciation works for HVAC equipment and improvements, how the CARES Act influenced these rules, and practical steps for maximizing tax benefits while staying compliant.

What Is HVAC Bonus Depreciation

Bonus depreciation allows businesses to deduct a large portion of the cost of qualified property in the year the property is placed in service. Under current federal rules, a substantial portion of HVAC equipment, including commercial boilers, air handlers, package units, and certain energy-efficient components, may qualify as qualified property for bonus depreciation. The idea is to accelerate depreciation beyond the standard methods, improving cash flow in the year of purchase.

In practice, bonus depreciation is separate from regular depreciation. It does not require the property to be new, and it can apply to used equipment as well, subject to the IRS rules. Taxpayers should review the specific qualification criteria for HVAC assets, including the property’s class life and whether any portion is considered personal property or a structural component of a building.

CARES Act Impact on Bonus Depreciation

The CARES Act introduced temporary enhancements to depreciation rules to bolster economic relief. One key provision expanded the availability of 100% bonus depreciation for qualified property placed in service in 2020 and 2021, with a gradual phase-down beginning in 2022 and continuing thereafter. For HVAC investments, this meant a larger write-off in the first year, potentially offsetting significant project costs.

Important nuance: bonus depreciation is subject to IRS rules that require the property to be used in a trade or business and to be eligible as a depreciable asset. Certain long-lived HVAC systems and components may be eligible, while others might be excluded if they do not meet the ‘placed in service’ or ‘property class’ requirements. Businesses should work with a tax professional to confirm eligibility for their specific HVAC upgrade or purchase.

How It Applies to HVAC Equipment and Upgrades

HVAC projects fall into several categories with respect to depreciation eligibility. New equipment installed in a commercial setting, such as rooftop units, chillers, boilers, air handling units, and advanced controls, can qualify as tangible personal property. HVAC improvements that constitute betterments or replacements in commercial buildings may also qualify under bonus depreciation, though some components could be considered building components with different depreciation treatment.

New vs. used equipment: Bonus depreciation can apply to both new and used qualifying property, provided the property is new to the taxpayer and meets the placed-in-service requirement.
Energy efficiency considerations: Some efficiency upgrades may influence other incentives, such as energy credits, but bonus depreciation itself focuses on the asset’s eligibility and service date rather than efficiency level alone.
Bundled projects: When HVAC work is part of a broader building improvement, treat the project as multiple assets to determine which portions qualify for bonus depreciation independent of structural components.

Timing and Placed-In-Service Rules

Timing is critical for bonus depreciation. The advantage peak occurs when the asset is placed in service within the eligible year. For example, under the CARES Act, 100% bonus depreciation applied to qualified property placed in service in 2020 and 2021, with a phase-down beginning in 2022. If a project crosses year boundaries, only the portion placed in service in the eligible year may receive the enhanced deduction.

Businesses should document installation and commissioning dates, purchase invoices, and evidence that the asset is used in business activity. Any delays in placement in service can affect the depreciation schedule and the available deduction in the intended year.

Example Scenarios

Scenario 1: A small manufacturing facility installs a new rooftop HVAC unit for 120,000. The asset is placed in service in 2020. With 100% bonus depreciation, the facility can deduct the full 120,000 in the first year, subject to phase-out rules if applicable. This accelerates tax relief and improves cash flow during a capital-intensive upgrade.

Scenario 2: A retail building replaces an aging chiller and adds advanced controls totaling 450,000. If placed in service in 2021, the 100% bonus depreciation applies for the eligible portion, potentially enabling a substantial first-year deduction. Any remaining cost not covered by bonus depreciation would be depreciated under standard methods.

Other Related Deductions and Credits

Beyond bonus depreciation, businesses may also explore the Section 179 deduction, which allows expensing of certain qualifying property in the year of purchase, subject to caps. In some cases, a portion of HVAC equipment may be eligible for Section 179, especially for small to mid-sized purchases.

Energy-related incentives, such as the Nonbusiness Energy Property Credit or commercial energy-efficiency credits, may apply in certain contexts. While these credits operate separately from bonus depreciation, coordinating both can maximize total tax benefits for HVAC projects. Consulting a tax professional helps align incentive timing and eligibility.

Practical Considerations for Businesses

Businesses should assess project scope, budget, and tax strategy before committing to HVAC upgrades. The following steps help optimize depreciation benefits:

Consult a tax advisor: Determine asset classification, placement date, and applicable depreciation method for the specific HVAC project.
Document thoroughly: Maintain purchase orders, invoices, installation dates, and commissioning records to support depreciation claims.
Coordinate with financing: Align equipment procurement timing with tax planning to maximize first-year deductions.
Evaluate total incentives: Compare bonus depreciation with Section 179 and energy credits to identify the most favorable combination for the business.
Plan for the phase-down: If placing assets in service near 2022 or beyond, anticipate reduced bonus depreciation percentages and adjust cash flow projections accordingly.

How to Claim on the Tax Return

To claim bonus depreciation, businesses must attach the appropriate forms and schedules with the tax return. Form 4562 is typically used to report depreciation and amortization, including bonus depreciation under Section 168(k). For complex projects or multi-asset installations, a professional tax preparer can help ensure accurate categorization, proper form completion, and correct placement in service dates.

It is crucial to review state-level considerations as well, since some states do not conform to federal bonus depreciation rules. State tax treatment may differ and could impact overall tax outcomes.

Conclusion

HVAC investments offer meaningful opportunities to leverage bonus depreciation under CARES Act provisions. By understanding eligibility, timing, and interaction with other deductions and credits, businesses can improve cash flow while achieving essential comfort and efficiency gains. Working with a qualified tax advisor ensures accurate application and maximizes the financial advantages of HVAC upgrades.