Do I Depreciate a New HVAC or Expense It?

TL;DR: One IRS test decides whether a rental expense hits Schedule E this year or gets depreciated over decades — miss it and you can lose years of deductions.

_Last reviewed: July 2026 · 4 min read_

If you replaced an HVAC unit in a rental and aren't sure how to deduct it, the honest answer is: replacing the whole system is a capital improvement (depreciated over years), while fixing one broken component is a repair (deducted immediately). The IRS test is called BAR — Betterment, Adaptation, Restoration — and it decides the category for every rental expense you'll ever make.

Okoniq Property Hub tags each expense with the right category as you enter it, so this decision doesn't loom over Schedule E in April. Here's how the test works.

What's the difference between a repair and an improvement?

• Repair: Restores the property to its ordinary operating condition without adding value or extending useful life. Deducted in full the year you pay for it, on Schedule E.
• Improvement: Betters, adapts, or restores the property to a materially better condition than before. Capitalized and depreciated over the property's applicable IRS life (usually 27.5 years for residential rental structure, 5–15 years for shorter-life components).

The stakes are big. A $8,000 HVAC categorized as a repair gives you $8,000 of deduction now. Categorized as an improvement, it gives you roughly $290/year for 27.5 years. Same dollar out of pocket, wildly different tax outcome — and wrong categorization is what triggers audit adjustments.

What is the IRS BAR test?

The IRS regulation (T.D. 9636, the "tangible property regulations") says an expenditure is a capital improvement if it results in:

• Betterment — fixes a defect that existed before you owned it, materially adds value, or increases capacity or output
• Adaptation — changes the property's use (converting a garage to a rental unit)
• Restoration — replaces a major component or substantial structural part, or restores the property to like-new after major deterioration

If none of those apply, it's a repair.

What are common HVAC scenarios?

• Compressor replacement on an existing outdoor unit: Usually a repair — you're fixing one component.
• New indoor blower motor: Repair.
• Full replacement of a central AC system (condenser + coil + air handler): Improvement. You've replaced a major component. Depreciate over 27.5 years.
• First-time installation of central AC in a home that had window units: Improvement — this is a betterment and often adaptation.
• Refrigerant recharge, filter change, annual service: All repairs.

Ductwork replacement, water heater replacement (as the entire unit), and roof replacement follow the same logic: replace the whole system → improvement.

Full worked examples are in IRS Publication 527 and the tangible property regulations FAQ.

What is the de minimis safe harbor?

Landlords have an important shortcut called the de minimis safe harbor election. It lets you expense any single item costing $2,500 or less ($5,000 with audited financials) as a repair, regardless of whether it would otherwise be an improvement.

To use it, elect it every year on your tax return (a one-page election statement) AND have a written accounting policy in place at the start of the year saying you expense items under the threshold. That water heater at $1,800, the range at $900, the dishwasher at $650 — all safe to expense with the election.

Let the right category sort itself out

The BAR test is one of those places where a little upfront system-building saves you months of stress. Okoniq Property Hub lets you tag each expense as repair or improvement at entry, applies the de minimis threshold, and rolls it into the right bucket for Schedule E. Related: Schedule E deductions in 2026 and Section 179 vs. bonus depreciation for rentals.

Frequently asked questions

What about a partial roof repair vs. a full replacement?

Patching a few shingles is a repair. Replacing the entire roof covering is an improvement (major structural component). A shingle-over on a 15-year-old roof is generally an improvement.

Does painting count as a repair or improvement?

Repainting to keep the property in ordinary condition is a repair. Painting as part of a broader renovation (kitchen remodel, unit turnover after damage) usually gets capitalized as part of the improvement.

What if I mixed a repair and improvement in one invoice?

Ask your contractor to split the invoice into repair labor/materials vs. improvement labor/materials. If they won't, allocate reasonably yourself (a repair-heavy invoice with 20% improvement is fine; 90% improvement labeled as repair is not) and document the allocation.

Not tax advice. The BAR test has real edge cases — talk to a licensed CPA when a project is on the borderline. Okoniq Property Hub keeps the underlying receipts and category tags organized so those conversations are quick. Get started free.

FAQ

How long do I depreciate an HVAC system if it's ruled a capital improvement?

A full HVAC replacement in a residential rental is depreciated over 27.5 years as part of the building structure, giving you roughly $290 per year in deductions for an $8,000 system.

Can I ever expense a new $6,000 furnace in one year instead of depreciating it?

Not through the de minimis safe harbor, which caps at $2,500 per item, but you may be able to claim bonus depreciation or Section 179 if the furnace qualifies as 5-year or 15-year property separate from the building — consult a CPA because the IRS treatment varies.

What happens if I call an improvement a repair and the IRS catches it?

The IRS will reclassify it, recapture the excess deduction from the year you claimed it, and spread it over 27.5 years going forward — you lose the immediate write-off and may owe tax plus interest on the adjustment.

Do I need to elect the de minimis safe harbor every single year?

Yes, the election must be made annually on your tax return, and you must have a written capitalization policy in place by the start of each tax year stating your threshold.