HVAC / Furnace Permit Requirements in Washington, DC
When you DO need a permit
Like-for-like HVAC replacements require a mechanical permit in Washington, DC.
Estimated fee: $90 – $300
Typical timeline: 5 business days
Source: DC Construction Code
Changing HVAC system type requires mechanical and electrical permits in Washington, DC.
Estimated fee: $180 – $600
Typical timeline: About 2 weeks
Source: DC Construction Code
Adding central HVAC requires mechanical, electrical, and building permits in Washington, DC.
Estimated fee: $360 – $1,200
Typical timeline: About 3 weeks
Source: DC Construction Code
Ductwork modifications require a mechanical permit in Washington, DC.
Estimated fee: $120 – $420
Typical timeline: About 2 weeks
Source: DC Construction Code
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Frequently Asked Questions
Estimated permit fees for HVAC / Furnace projects in Washington, DC range from $90 – $300. Fees vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller HVAC / Furnace projects may be exempt from permit requirements, while larger ones typically require a permit. Use our free lookup tool to check your specific situation.
Working without a required permit in Washington can result in fines, stop-work orders, being required to remove completed work, and complications when selling your home. It's always best to check first.
Typical approval time for HVAC / Furnace permits in Washington is 5 business days. More complex projects may take longer if plan review is required.