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How do I get the landlord to pay for temporary HVAC during an off-hours buildout?

📖 2,370 words🗓️ Published Jul 2, 2026

Direct Answer

You get the landlord to pay for temporary HVAC during an off-hours buildout by framing it as a base building obligation — not a tenant improvement — and by tying it directly to the lease's delivery condition and work letter. The building's existing HVAC system is the landlord's asset, and if your construction schedule requires its temporary shutdown or supplementation (for dust control, ductwork tie-ins, or zone isolation), that creates a deficiency in the landlord's obligation to maintain a habitable space. Your leverage: the lease almost always requires the landlord to provide heating and air conditioning during normal business hours for your buildout period, but off-hours work — nights, weekends, or phased occupancy — is a gray area you must explicitly address in the TI allowance or a separate construction coordination agreement. The winning move: negotiate a fixed lump sum for temporary HVAC as part of the landlord's work or as a credit against rent during the buildout phase. Never accept a verbal promise — get it in the lease exhibit or a side letter, and specify the equipment type (chillers, portable units, or supplemental rooftop units), duration, and who pays utilities for those units. If the landlord balks, remind them that unconditioned construction voids warranties on finishes, slows the schedule, and risks mold — all costs that land back on their property.

flowchart TD A[Review Lease Terms] --> B[Check Local Laws] B --> C[Document HVAC Failure] C --> D[Send Formal Request] D --> E[Negotiate with Landlord] E --> F[Consider Mediation] F --> G[Seek Legal Advice]

Why Landlords Resist — And How To Counter

Landlords push back on temporary HVAC costs because they see it as a tenant-driven expense — you chose the off-hours schedule, not them. Their typical argument: "If you worked during normal business hours, the existing system would be fine." Here's how to dismantle that:

Point to the landlord's obligation to maintain habitable premises. Most commercial leases require the landlord to maintain HVAC systems in good working order *during the term*. If the buildout is part of your lease term (and it usually is once you take possession), the landlord's obligation to provide conditioned air doesn't pause because you're working at midnight. A failure to provide cooling during summer construction can be framed as a constructive eviction risk — especially if it delays your opening.
Use the dust-control argument. Standard HVAC systems cannot handle construction dust — it clogs coils, ruins compressors, and voids manufacturer warranties. Temporary dedicated units protect the landlord's capital equipment. You're doing them a favor by isolating their expensive rooftop units from your drywall and demo debris.
Cite industry standards. Industry guidelines from organizations like ASHRAE recommend temporary ventilation and temperature control during any renovation that disrupts the main system. Landlords who ignore this risk liability for worker safety violations or material degradation.
Offer a split. If they won't pay 100%, propose a 50/50 split or a cap (e.g., landlord pays a reasonable first portion, you pay overage). This shows reasonableness while still getting them on the hook.

The counter-offer that works: "I'll pay for the temporary HVAC if you extend my rent abatement by two weeks to cover the schedule risk." That converts a hard cost into a soft concession they can more easily approve.

The Lease Language You Must Insert

Your lease or work letter is where the battle is won or lost. You need three specific provisions:

"Temporary HVAC During Construction" clause. Example language: "Landlord shall provide, at Landlord's sole cost, temporary heating, ventilation, and air conditioning units sufficient to maintain temperature and humidity within industry standards during all Tenant buildout activities, including off-hours work. Such units shall be operational prior to any demolition or construction that disrupts the base building HVAC system."

"Utility Cost Responsibility" clause. Clarify who pays for electricity and fuel for the temporary units. Typical split: landlord pays for connection and equipment rental; tenant pays for utilities consumed during construction. But negotiate the utility piece — if the landlord's meter serves the unit, you want a submeter or a fixed monthly fee to avoid surprise bills.

"Schedule and Coordination" exhibit. Attach a construction schedule showing exactly when the main HVAC will be down and when temporary units will be active. This prevents the landlord from claiming you "didn't need" the units because they didn't know the timing.

Pro tip: If the landlord uses a standard lease form (like those from BOMA or AIR), the base building section often says landlord provides "HVAC systems" but doesn't mention temporary. Add an exhibit that explicitly overrides that — don't rely on vague "landlord cooperation" language.

The Three Temporary HVAC Strategies

Not all temporary HVAC is created equal. Your negotiation depends on which strategy fits your buildout:

Strategy 1: Portable Spot Coolers and Heaters. Best for small spaces or phased work where only one zone is affected. You can argue this is a minor expense the landlord should cover as part of construction management. The landlord's counter: "That's a tenant fixture — you take it when you leave." Your rebuttal: "It's protecting your ceiling tiles, drywall, and flooring from moisture damage — that's base building protection."

Strategy 2: Supplemental Rooftop Units (RTUs). Best for large spaces or when the main system is down for weeks. This is the strongest argument for landlord payment because it's a temporary modification to the building's mechanical system. Landlords often have vendor relationships with HVAC rental companies and can get better rates — leverage that.

Strategy 3: Tie-In to Adjacent Space. If the building has vacant space with functioning HVAC, the landlord can run ductwork or flexible hoses from that zone into your buildout area. This is the cheapest option and the hardest for the landlord to refuse — they're just using existing idle equipment.

Your negotiation play: Start by asking for Strategy 3 (cheapest, easiest to approve). If they reject, escalate to Strategy 2 (most defensible as base building). Only accept Strategy 1 as a compromise if you get something else in return — like a rent credit or extended TI allowance.

The Off-Hours Premium — How To Value It

Off-hours buildouts carry a premium — typically higher labor costs and logistical complexity — and temporary HVAC is part of that. Here's how to quantify it for negotiation:

Labor cost differential. Night and weekend work often requires prevailing wage or overtime rates. The landlord may argue they shouldn't subsidize your premium schedule. Counter: "The HVAC system doesn't care what time it is — it needs to run 24/7 to protect the building. The temporary unit is a fixed cost independent of labor."
Schedule compression value. If off-hours work lets you finish faster, that's rent you save. Frame the temporary HVAC as a small fraction of that savings — "I'm saving you lost rent by finishing early; the temporary HVAC is a strong return on your investment."
Risk mitigation value. Mold remediation from uncontrolled humidity is expensive. Material replacement from temperature swings (warped wood, cracked drywall) adds to your buildout budget. The temporary HVAC is insurance against these claims — and the landlord's property insurance may require it.

The math to show the landlord: "Your share of temporary HVAC is reasonable compared to your avoided risk of mold claim and avoided schedule delay in lost rent. The net benefit to you is substantial."

What To Do When The Landlord Still Says No

If the landlord refuses to pay for temporary HVAC outright, you have escalation options:

Escalate to the construction manager. The landlord's project manager or general contractor often has a contingency budget for unforeseen conditions. Temporary HVAC can be classified as an unforeseen condition if the existing system can't handle the construction load. Ask the GC to submit a change order from that contingency.
Use the landlord's maintenance obligation. Send a formal letter citing the lease section that requires the landlord to maintain habitable conditions. State that without temporary HVAC, your construction will be delayed and you will hold the landlord responsible for lost revenue from delayed opening. Most landlords will fold rather than face a rent abatement claim.
Offer a trade-off. "I'll pay for the temporary HVAC if you waive the storage fee for my materials in the loading dock" or "if you extend my rent abatement by one week." This turns a sticking point into a negotiation chip.
Bring in your broker or attorney. A tenant rep broker or real estate attorney can write a demand letter that cites local building codes requiring ventilation during construction. In many jurisdictions, OSHA or local fire marshals require temporary HVAC for worker safety — and the landlord's refusal could be a code violation.
Last resort: pay it yourself and deduct from rent. If the lease allows self-help (most do for landlord obligations), you can pay for the temporary HVAC and deduct it from next month's rent. Send a notice first: "Pursuant to Section X of the lease, I am providing notice that I will arrange temporary HVAC and deduct same from rent due." This is aggressive but often works because landlords hate rent deductions.

The nuclear option: If the landlord's refusal is unreasonable and your lease has a clause requiring them to maintain the premises, you can claim constructive eviction — arguing the space is uninhabitable for construction. This is a legal threat that usually gets their attention.

The Timing Trap — When To Negotiate

The timing of your request is critical. Here's the when and how:

Negotiate during lease signing, not during construction. Once the lease is signed and the work letter is locked, the landlord has zero incentive to pay for anything extra. Get the temporary HVAC language in the initial work letter or lease exhibit. If you're already in construction, you have less leverage — but you can still use schedule pressure ("If I don't have temporary HVAC by Friday, I'm shutting down for two weeks").
Use the "early warning" tactic. Tell the landlord well before construction starts: "We're planning off-hours work starting [date]. Per our lease, we need temporary HVAC. Please confirm by [date] that you'll provide it." This gives them time to budget and order equipment — and makes them look unreasonable if they refuse.
Link to the permit process. Many building permits require temporary HVAC for occupancy during construction. If the landlord's permit application doesn't include it, the city may reject the permit. Use this as a deadline driver.
Don't wait until the last minute. Temporary HVAC units have lead times — especially in peak season (summer). If you wait until the week before, the landlord can claim "no units available" and avoid responsibility.

The golden rule: Never start construction without written confirmation of temporary HVAC. A verbal promise from a leasing agent is worthless — get it in an email or change order signed by the landlord's property manager.

FAQ

What if my lease doesn't mention temporary HVAC at all? Then you're in a gray zone — but the landlord's implied covenant of good faith and habitability still applies. Send a written request citing the need to protect base building systems and offer a reasonable cost split. Most landlords will compromise rather than risk a dispute.

Can I use portable AC units I buy myself and deduct the cost? Only if your lease has a self-help clause allowing you to remedy landlord defaults and deduct costs from rent. Otherwise, you risk breaching the lease by making unauthorized modifications to the building's electrical system. Check with your attorney first.

Does the landlord have to pay for temporary HVAC if I'm doing a cosmetic renovation only? If you're just painting and carpeting — and not touching the HVAC system — the landlord may argue the existing system is adequate. But if your work generates dust or debris that could damage the system, you have a strong case for temporary units as protection.

What if the temporary HVAC costs more than my entire TI allowance? That's rare — temporary HVAC is typically a small percentage of total buildout cost. But if it's excessive, negotiate a cap (e.g., landlord pays up to a reasonable amount) and you pay the rest. Or ask the landlord to provide the units through their vendor at wholesale rates.

Can I use the building's existing HVAC during off-hours if I pay for the electricity? Sometimes — but most commercial HVAC systems are zoned and can't run one zone without cooling empty spaces. You'd need the landlord's permission and a submeter to track usage. It's often cheaper to rent a portable unit than to run a large chiller for one zone.

What if the landlord says temporary HVAC is my responsibility under "tenant improvements"? Push back: Temporary HVAC is not a tenant improvement — it's a construction condition that protects base building assets. Cite the lease's maintenance clause that says landlord maintains HVAC systems. A temporary unit is a temporary extension of that system, not a finish.

Sources

Building Owners and Managers Association (BOMA) — Standard Lease Forms and HVAC Guidelines
American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) — Construction Ventilation Standards
International Code Council (ICC) — Building Code Requirements for Temporary HVAC
Aggreko — Temporary HVAC Rental Industry Standards and Practices
United Rentals — Construction Site Climate Control Best Practices
National Association of Realtors (NAR) — Commercial Lease Negotiation Guides
Occupational Safety and Health Administration (OSHA) — Construction Site Ventilation Requirements

flowchart TD A[Identify need for temporary HVAC during off-hours buildout] --> B[Review lease for HVAC and construction clauses] B --> C{Does lease explicitly cover temporary HVAC?} C -- Yes --> D[Negotiate cost split based on existing language] C -- No --> E[Prepare negotiation strategy with cost-benefit analysis] E --> F["Propose landlord pays 100% as base building obligation"] F --> G{Landlord accepts?} G -- Yes --> H[Document in lease exhibit or side letter] G -- No --> I["Offer 50/50 split or trade-off rent credit"] I --> J{Landlord accepts?} J -- Yes --> H J -- No --> K[Escalate to construction manager contingency budget] K --> L{Contingency available?} L -- Yes --> H L -- No --> M[Send formal demand letter citing maintenance obligations] M --> N{Landlord responds?} N -- Yes --> O[Reach compromise or use self-help deduction] N -- No --> P[Consider legal claim or pay yourself and deduct rent] P --> Q[Document everything for potential dispute]

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![How do I get the landlord to pay for temporary HVAC during an off-hours buildout](/assets/cro-cover-6.jpg)

# How Do I Get the Landlord to Pay for Temporary HVAC During an Off-Hours Buildout?

## Direct Answer

You get the **landlord** to pay for **temporary HVAC** during an off-hours buildout by framing it as a **base building obligation** — not a tenant improvement — and by tying it directly to the lease's **delivery condition** and **work letter**. The building's existing HVAC system is the landlord's asset, and if your construction schedule requires its temporary shutdown or supplementation (for dust control, ductwork tie-ins, or zone isolation), that creates a **deficiency in the landlord's obligation to maintain a habitable space**. Your leverage: the lease almost always requires the landlord to provide **heating and air conditioning** during **normal business hours** for your buildout period, but off-hours work — nights, weekends, or phased occupancy — is a **gray area** you must explicitly address in the **TI allowance** or a separate **construction coordination agreement**. The winning move: negotiate a **fixed lump sum** for temporary HVAC as part of the **landlord's work** or as a **credit against rent** during the buildout phase. Never accept a verbal promise — get it in the lease exhibit or a side letter, and specify the **equipment type** (chillers, portable units, or supplemental rooftop units), **duration**, and **who pays utilities** for those units. If the landlord balks, remind them that **unconditioned construction** voids warranties on finishes, slows the schedule, and risks **mold** — all costs that land back on their property.

```mermaid
flowchart TD
A[Review Lease Terms] --> B[Check Local Laws]
B --> C[Document HVAC Failure]
C --> D[Send Formal Request]
D --> E[Negotiate with Landlord]
E --> F[Consider Mediation]
F --> G[Seek Legal Advice]
```

## Why Landlords Resist — And How To Counter

![How do I get the landlord to pay for temporary HVAC during an off- — Why Landlords Resist — And How To Counter](/assets/cro-cover-6.jpg)


Landlords push back on **temporary HVAC** costs because they see it as a **tenant-driven expense** — you chose the off-hours schedule, not them. Their typical argument: "If you worked during normal business hours, the existing system would be fine." Here's how to dismantle that:

- **Point to the landlord's obligation to maintain habitable premises.** Most commercial leases require the landlord to maintain **HVAC systems** in good working order *during the term*. If the buildout is part of your lease term (and it usually is once you take possession), the landlord's obligation to provide **conditioned air** doesn't pause because you're working at midnight. A **failure to provide cooling** during summer construction can be framed as a **constructive eviction** risk — especially if it delays your opening.
- **Use the dust-control argument.** Standard **HVAC systems** cannot handle construction dust — it clogs coils, ruins compressors, and voids manufacturer warranties. Temporary **dedicated units** protect the landlord's **capital equipment**. You're doing them a favor by isolating their expensive rooftop units from your drywall and demo debris.
- **Cite industry standards.** Industry guidelines from organizations like ASHRAE recommend **temporary ventilation** and **temperature control** during any renovation that disrupts the main system. Landlords who ignore this risk **liability** for worker safety violations or material degradation.
- **Offer a split.** If they won't pay 100%, propose a **50/50 split** or a **cap** (e.g., landlord pays a reasonable first portion, you pay overage). This shows reasonableness while still getting them on the hook.

The counter-offer that works: "I'll pay for the temporary HVAC if you extend my **rent abatement** by two weeks to cover the schedule risk." That converts a **hard cost** into a **soft concession** they can more easily approve.

## The Lease Language You Must Insert

![How do I get the landlord to pay for temporary HVAC during an off- — The Lease Language You Must Insert](/assets/cro-cover-6.jpg)


Your **lease** or **work letter** is where the battle is won or lost. You need three specific provisions:

1. **"Temporary HVAC During Construction" clause.** Example language: "Landlord shall provide, at Landlord's sole cost, temporary heating, ventilation, and air conditioning units sufficient to maintain **temperature** and **humidity** within industry standards during all Tenant buildout activities, including off-hours work. Such units shall be operational prior to any demolition or construction that disrupts the base building HVAC system."

2. **"Utility Cost Responsibility" clause.** Clarify who pays for **electricity** and **fuel** for the temporary units. Typical split: landlord pays for **connection** and **equipment rental**; tenant pays for **utilities consumed** during construction. But negotiate the utility piece — if the landlord's meter serves the unit, you want a **submeter** or a **fixed monthly fee** to avoid surprise bills.

3. **"Schedule and Coordination" exhibit.** Attach a **construction schedule** showing exactly when the main HVAC will be down and when temporary units will be active. This prevents the landlord from claiming you "didn't need" the units because they didn't know the timing.

**Pro tip**: If the landlord uses a **standard lease form** (like those from BOMA or AIR), the **base building** section often says landlord provides "HVAC systems" but doesn't mention temporary. Add an **exhibit** that explicitly overrides that — don't rely on vague "landlord cooperation" language.

## The Three Temporary HVAC Strategies

![How do I get the landlord to pay for temporary HVAC during an off- — The Three Temporary HVAC Strategies](/assets/cro-cover-6.jpg)


Not all **temporary HVAC** is created equal. Your negotiation depends on which strategy fits your buildout:

- **Strategy 1: Portable Spot Coolers and Heaters.** Best for **small spaces** or **phased work** where only one zone is affected. You can argue this is a **minor expense** the landlord should cover as part of **construction management**. The landlord's counter: "That's a **tenant fixture** — you take it when you leave." Your rebuttal: "It's protecting **your** ceiling tiles, drywall, and flooring from moisture damage — that's **base building protection**."

- **Strategy 2: Supplemental Rooftop Units (RTUs).** Best for **large spaces** or when the main system is down for weeks. This is the **strongest argument** for landlord payment because it's a **temporary modification** to the building's **mechanical system**. Landlords often have **vendor relationships** with HVAC rental companies and can get better rates — leverage that.

- **Strategy 3: Tie-In to Adjacent Space.** If the building has **vacant space** with functioning HVAC, the landlord can run **ductwork** or **flexible hoses** from that zone into your buildout area. This is the **cheapest option** and the hardest for the landlord to refuse — they're just using existing **idle equipment**.

**Your negotiation play**: Start by asking for **Strategy 3** (cheapest, easiest to approve). If they reject, escalate to **Strategy 2** (most defensible as base building). Only accept **Strategy 1** as a compromise if you get something else in return — like a **rent credit** or **extended TI allowance**.

## The Off-Hours Premium — How To Value It

**Off-hours buildouts** carry a **premium** — typically higher labor costs and **logistical complexity** — and temporary HVAC is part of that. Here's how to quantify it for negotiation:

- **Labor cost differential.** Night and weekend work often requires **prevailing wage** or **overtime** rates. The landlord may argue they shouldn't subsidize your premium schedule. Counter: "The **HVAC system** doesn't care what time it is — it needs to run 24/7 to protect the building. The **temporary unit** is a **fixed cost** independent of labor."
- **Schedule compression value.** If off-hours work lets you finish faster, that's rent you save. Frame the temporary HVAC as a **small fraction** of that savings — "I'm saving you lost rent by finishing early; the temporary HVAC is a strong return on your investment."
- **Risk mitigation value.** **Mold remediation** from uncontrolled humidity is expensive. **Material replacement** from temperature swings (warped wood, cracked drywall) adds to your buildout budget. The temporary HVAC is **insurance** against these claims — and the landlord's **property insurance** may require it.

**The math to show the landlord**: "Your share of temporary HVAC is reasonable compared to your avoided risk of mold claim and avoided schedule delay in lost rent. The net benefit to you is substantial."

## What To Do When The Landlord Still Says No

If the landlord refuses to pay for **temporary HVAC** outright, you have **escalation options**:

- **Escalate to the construction manager.** The landlord's **project manager** or **general contractor** often has a **contingency budget** for **unforeseen conditions**. Temporary HVAC can be classified as an **unforeseen condition** if the existing system can't handle the construction load. Ask the GC to submit a **change order** from that contingency.
- **Use the landlord's maintenance obligation.** Send a formal letter citing the lease section that requires the landlord to maintain **habitable conditions**. State that without temporary HVAC, your construction will be **delayed** and you will hold the landlord **responsible** for **lost revenue** from delayed opening. Most landlords will fold rather than face a **rent abatement claim**.
- **Offer a trade-off.** "I'll pay for the temporary HVAC if you waive the **storage fee** for my materials in the loading dock" or "if you extend my **rent abatement** by one week." This turns a **sticking point** into a **negotiation chip**.
- **Bring in your broker or attorney.** A **tenant rep broker** or **real estate attorney** can write a **demand letter** that cites **local building codes** requiring **ventilation** during construction. In many jurisdictions, **OSHA** or **local fire marshals** require **temporary HVAC** for worker safety — and the landlord's refusal could be a **code violation**.
- **Last resort: pay it yourself and deduct from rent.** If the lease allows **self-help** (most do for **landlord obligations**), you can **pay for the temporary HVAC** and **deduct it from next month's rent**. Send a **notice** first: "Pursuant to Section X of the lease, I am providing notice that I will arrange temporary HVAC and deduct same from rent due." This is **aggressive** but often works because landlords hate **rent deductions**.

**The nuclear option**: If the landlord's refusal is **unreasonable** and your lease has a clause requiring them to maintain the premises, you can claim **constructive eviction** — arguing the space is **uninhabitable** for construction. This is a **legal threat** that usually gets their attention.

```mermaid
flowchart TD
    A[Identify need for temporary HVAC during off-hours buildout] --> B[Review lease for HVAC and construction clauses]
    B --> C{Does lease explicitly cover temporary HVAC?}
    C -- Yes --> D[Negotiate cost split based on existing language]
    C -- No --> E[Prepare negotiation strategy with cost-benefit analysis]
    E --> F[Propose landlord pays 100% as base building obligation]
    F --> G{Landlord accepts?}
    G -- Yes --> H[Document in lease exhibit or side letter]
    G -- No --> I[Offer 50/50 split or trade-off rent credit]
    I --> J{Landlord accepts?}
    J -- Yes --> H
    J -- No --> K[Escalate to construction manager contingency budget]
    K --> L{Contingency available?}
    L -- Yes --> H
    L -- No --> M[Send formal demand letter citing maintenance obligations]
    M --> N{Landlord responds?}
    N -- Yes --> O[Reach compromise or use self-help deduction]
    N -- No --> P[Consider legal claim or pay yourself and deduct rent]
    P --> Q[Document everything for potential dispute]
```

## The Timing Trap — When To Negotiate

The **timing** of your request is critical. Here's the **when** and **how**:

- **Negotiate during lease signing, not during construction.** Once the **lease** is signed and the **work letter** is locked, the landlord has **zero incentive** to pay for anything extra. Get the temporary HVAC language in the **initial work letter** or **lease exhibit**. If you're already in construction, you have **less leverage** — but you can still use **schedule pressure** ("If I don't have temporary HVAC by Friday, I'm shutting down for two weeks").
- **Use the "early warning" tactic.** Tell the landlord well before construction starts: "We're planning off-hours work starting [date]. Per our lease, we need temporary HVAC. Please confirm by [date] that you'll provide it." This gives them time to **budget** and **order equipment** — and makes them look **unreasonable** if they refuse.
- **Link to the permit process.** Many **building permits** require **temporary HVAC** for **occupancy** during construction. If the landlord's **permit application** doesn't include it, the **city** may **reject** the permit. Use this as a **deadline driver**.
- **Don't wait until the last minute.** **Temporary HVAC units** have **lead times** — especially in peak season (summer). If you wait until the week before, the landlord can claim "no units available" and avoid responsibility.

**The golden rule**: **Never** start construction without **written confirmation** of temporary HVAC. A **verbal promise** from a leasing agent is **worthless** — get it in an **email** or **change order** signed by the landlord's **property manager**.

## FAQ

**What if my lease doesn't mention temporary HVAC at all?**
Then you're in a **gray zone** — but the landlord's **implied covenant of good faith** and **habitability** still applies. Send a **written request** citing the need to protect **base building systems** and offer a **reasonable cost split**. Most landlords will compromise rather than risk a **dispute**.

**Can I use portable AC units I buy myself and deduct the cost?**
Only if your lease has a **self-help clause** allowing you to **remedy landlord defaults** and **deduct costs from rent**. Otherwise, you risk **breaching the lease** by making **unauthorized modifications** to the building's **electrical system**. Check with your **attorney** first.

**Does the landlord have to pay for temporary HVAC if I'm doing a cosmetic renovation only?**
If you're just painting and carpeting — and not touching the **HVAC system** — the landlord may argue the existing system is **adequate**. But if your work generates **dust** or **debris** that could damage the system, you have a **strong case** for temporary units as **protection**.

**What if the temporary HVAC costs more than my entire TI allowance?**
That's rare — temporary HVAC is typically a small percentage of total buildout cost. But if it's excessive, negotiate a **cap** (e.g., landlord pays up to a reasonable amount) and you pay the rest. Or ask the landlord to **provide the units** through their **vendor** at **wholesale rates**.

**Can I use the building's existing HVAC during off-hours if I pay for the electricity?**
Sometimes — but most **commercial HVAC systems** are **zoned** and can't run **one zone** without cooling **empty spaces**. You'd need the landlord's **permission** and a **submeter** to track usage. It's often **cheaper** to rent a **portable unit** than to run a large chiller for one zone.

**What if the landlord says temporary HVAC is my responsibility under "tenant improvements"?**
Push back: **Temporary HVAC** is not a **tenant improvement** — it's a **construction condition** that protects **base building assets**. Cite the lease's **maintenance clause** that says landlord maintains **HVAC systems**. A temporary unit is a **temporary extension** of that system, not a **finish**.

## Sources

- Building Owners and Managers Association (BOMA) — Standard Lease Forms and HVAC Guidelines
- American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) — Construction Ventilation Standards
- International Code Council (ICC) — Building Code Requirements for Temporary HVAC
- Aggreko — Temporary HVAC Rental Industry Standards and Practices
- United Rentals — Construction Site Climate Control Best Practices
- National Association of Realtors (NAR) — Commercial Lease Negotiation Guides
- Occupational Safety and Health Administration (OSHA) — Construction Site Ventilation Requirements

## Related on PULSE

- Explore more in the PULSE library.

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