Mechanic’s Lien

A mechanic’s lien is a legal claim against property to secure payment for labor, materials, or equipment furnished to improve that property. In HVAC, lien rights are a powerful backstop—but they come with strict notice and filing rules that vary by state.

Build Your HVAC Contract — Free Draft Include milestone payments & lien waiver steps

Why It Matters for HVAC

  • Payment security: If you’re unpaid after providing labor/materials, a lien can pressure resolution or payment from owners/lenders.
  • Flow-down protection: Subs and suppliers may have independent rights (with different notice rules) even if the GC is unpaid.
  • Title impact: Recorded liens cloud title—owners usually must resolve them before sale or refinance.

How It Generally Works

  1. Preliminary notice (if required): Sent early—often within a set number of days from first furnishing—so owners/lenders know you’re on the job.
  2. Record the lien: If unpaid, file a lien claim within the statutory deadline after last furnishing or completion (deadline varies by state and role).
  3. Enforce or release: If still unpaid, you may need to file suit to enforce within a strict window. If paid, record a release/satisfaction.

Deadlines, forms, who can claim, and what costs are recoverable vary by state and sometimes by county. Always check your state page.

Best Practices for HVAC Shops

  • Spell out payments: Deposits, milestones, and due-on-completion in your contract. Tie inspections/permits and change orders to payments.
  • Track “first/last furnishing” dates: You need them for notice and lien deadlines.
  • Send required notices on time: Certified mail or e-delivery where allowed; keep proof of delivery.
  • Use lien waivers correctly: Conditional on payment (for progress draw), unconditional only after funds clear.
  • Document changes: Use written change orders for hidden conditions and owner-requested extras—these affect lienable amounts.
  • Release promptly: Once paid, record a timely release/satisfaction to avoid penalties.

Copy-Ready Contract Language (Generic)

Progress Payments & Waivers

Payments are due per the schedule in this Agreement. Contractor will provide a conditional lien waiver upon receipt of each progress payment and an unconditional lien waiver upon clearance of funds for the corresponding amount.

Notice & Cure

If any amount is not paid when due, Contractor may provide written notice to Customer. If not cured within the stated period, Contractor may suspend work, record a lien as permitted by law, and pursue remedies available under the Agreement and applicable statutes.

Owner’s Right to Proof

Upon request, Contractor will furnish invoices, delivery tickets, and subcontractor/supplier affidavits sufficient to substantiate amounts invoiced and lien waivers exchanged.

Replace or adjust with the exact language required in your jurisdiction or by your lender/GC.

Mechanic’s Lien — FAQs

Do I always have lien rights?

Not always. Rights can depend on your role (GC, sub, supplier), project type (residential vs. commercial), licensing status, and whether you served required notices on time.

What if the customer paid the GC but not me?

Subs/suppliers may still have lien rights if the owner has not received proper lien waivers. Preliminary notices are critical so the owner knows who to pay.

Can I include attorney’s fees or interest?

Sometimes. It depends on statute and your contract terms. Check your state rules and include clear payment/interest language.

Will a lien hurt my relationship with the customer?

It can. Use notices and communication to resolve payment early. A lien is typically a last resort to protect your company’s rights.

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