<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 340" role="img" aria-label="Who Pays for HVAC Repair and Replacement in a Commercial Lease? — PULSE Buildouts"><rect width="1200" height="340" fill="#EBE9DE"/><rect width="14" height="340" fill="#C0531F"/><text x="58" y="116" font-family="Arial,Helvetica,sans-serif" font-size="32" font-weight="800" letter-spacing="3" fill="#C0531F">PULSE BUILDOUTS · COMMERCIAL REAL ESTATE</text><text x="56" y="198" font-family="Arial,Helvetica,sans-serif" font-size="60" font-weight="800" fill="#2b2b2b">Save money.

Don’t get screwed.</text><text x="58" y="258" font-family="Arial,Helvetica,sans-serif" font-size="30" font-weight="600" fill="#6b5b4d">Leases, TI, NNN &amp; buildouts — negotiated in your favor</text><g transform="translate(1010,86)" fill="none" stroke="#C0531F" stroke-width="9" stroke-linejoin="round"><rect x="20" y="40" width="150" height="130"/><line x1="20" y1="40" x2="95" y2="6"/><line x1="170" y1="40" x2="95" y2="6"/><rect x="50" y="80" width="36" height="36"/><rect x="104" y="80" width="36" height="36"/><rect x="74" y="128" width="42" height="42"/></g></svg>

Who Pays for HVAC Repair and Replacement in a Commercial Lease?

It depends entirely on your lease type — and this is one of the most expensive line items tenants get screwed on. In a triple-net (NNN) lease, the tenant usually pays for HVAC repair and maintenance; in a gross or full-service lease, the landlord typically does. The trap is replacement: a rooftop unit (RTU) costs $8,000 to $25,000+ to replace, and landlords routinely try to push that capital cost onto a small tenant through the maintenance clause.

The money move: negotiate an HVAC repair cap — commonly $1,000 to $2,500 per year above which the landlord pays — and a flat carve-out that replacement is always the landlord's cost (it is a capital improvement to *their* building, with a 15-to-20-year useful life you will never fully use).

Also demand the landlord deliver the HVAC in good working order on day one with a warranty period of 30 to 90 days, and require a transferable service contract. Get this wrong and a single compressor failure in year two can cost you $12,000 out of pocket.

Know Your Lease Type First

Who pays HVAC is downstream of your rent structure. Identify which one you have before you negotiate anything else:

• Full-service / gross lease. Rent includes operating costs; the landlord pays HVAC repair, maintenance, and replacement. Most common in multi-tenant office towers.
• Triple-net (NNN). Tenant pays base rent plus taxes, insurance, and common-area maintenance (CAM) — and often the full HVAC burden, including repairs. Common in retail and single-tenant buildings.
• Modified gross. A split — negotiate exactly where HVAC lands. This is where caps and carve-outs matter most.

In a single-tenant NNN with a dedicated rooftop unit, you are most exposed: there is no CAM pool to spread the cost, so a failure hits you alone.

The Repair vs. Replacement Distinction That Saves Thousands

Landlords blur repair and replacement on purpose. Keep them strictly separate in the lease:

• Routine maintenance (filters, belts, quarterly service): reasonable for the tenant to handle via a service contract — budget $300 to $800/year per unit.
• Repairs (a failed motor, a leak, a control board): negotiate an annual cap. Above $1,500 to $2,500, the cost shifts to the landlord.
• Replacement (a whole new unit): this is a capital expense improving the landlord's asset with a useful life far beyond your lease term. It should always be the landlord's cost. If the landlord insists on passing it through, demand it be amortized over the unit's useful life (15–20 years) so you only pay for the months you actually occupy — not the whole unit.

A tenant paying full replacement is essentially buying the landlord a new asset they keep after you leave. Refuse it.

What to Demand Before You Sign

Put these protections in writing during lease negotiation, not after the unit dies:

1. Warranty of working condition. Landlord delivers HVAC in good working order with a 30-to-90-day warranty; any failure in that window is 100% landlord's cost.
2. Pre-lease inspection. Hire an independent HVAC contractor to inspect every unit before signing. Document age, tonnage, and condition. A unit already 12+ years old is a replacement waiting to happen — make the landlord replace it now or guarantee it.
3. Annual repair cap. Tenant's repair exposure capped at $1,500 to $2,500/year; overage is the landlord's.
4. Replacement carve-out. Replacement is always landlord's cost, full stop — or amortized over useful life if pushed through.
5. CAM cap on HVAC. In NNN deals, cap the HVAC line within CAM and exclude capital replacements from passthrough.
6. Transferable service contract. Require an existing or new manufacturer-backed service contract assigned to you, so you inherit coverage.

Real Numbers to Anchor the Negotiation

Use these figures to fight back when a landlord claims HVAC is "just maintenance":

• Routine service contract: $300–$800/year per unit.
• Common repair (motor, board, leak): $500–$3,500 per incident.
• Compressor replacement: $2,500–$6,000.
• Full RTU replacement (5-ton commercial): $8,000–$25,000+ installed.
• Useful life of a commercial RTU: 15–20 years — almost always longer than your lease, which is exactly why replacement is a landlord cost.

When a $15,000 replacement on a unit with a 20-year life lands during a 5-year lease, the tenant's fair share — if any — is at most 25% amortized. Most well-negotiated leases make it 0%.

Don't Forget These HVAC Traps

• Age at signing. A landlord handing you a 15-year-old unit is handing you a replacement bill. Inspect and force the issue up front.
• "As-is" delivery. Never accept HVAC as-is without a working-order warranty and inspection. As-is means *you* discover the failure after move-in.
• CAM capital passthrough. In NNN, watch for landlords slipping capital replacements into CAM as "repairs." Cap and exclude them explicitly.
• Oversized or undersized units. A unit that doesn't match the buildout's load fails early. Verify tonnage vs. Square footage during the buildout.
• No service records. Demand maintenance history. A neglected unit is a near-term replacement.

Tenant-rep brokers at CBRE, JLL, and Cushman & Wakefield consistently rank the HVAC clause among the top three cost surprises for first-time commercial tenants — right behind CAM reconciliations and relocation clauses. Treat it as a negotiated dollar figure, never boilerplate.

FAQ

Does the tenant pay for HVAC in a triple-net lease? Usually yes for maintenance and repairs, but not necessarily for replacement. Even in a NNN lease you should negotiate an annual repair cap ($1,500–$2,500) and a carve-out making full unit replacement the landlord's cost, since replacement is a capital improvement to their building.

Should the landlord pay to replace a rooftop HVAC unit? In most fair deals, yes. A commercial RTU has a 15-to-20-year useful life and replacing it improves the landlord's asset long after you're gone. If the landlord insists you contribute, demand the cost be amortized over the unit's useful life so you pay only for your occupancy months.

How do I protect myself from a failing HVAC unit before signing? Hire an independent HVAC contractor to inspect every unit and document age, tonnage, and condition. Then require the landlord to deliver the system in good working order with a 30-to-90-day warranty and to replace any unit over 12–15 years old before move-in.

What is a reasonable HVAC repair cap for a small tenant? Most negotiated leases cap tenant repair exposure at $1,000 to $2,500 per year per unit, with everything above the cap — plus all replacements — shifting to the landlord. Smaller spaces aim for the low end of that range.