# Mechanical (HVAC) permit MVQ2600066 at 620 I St NW, Washington

DC Department of Buildings permit MVQ2600066: issued Jun 29, 2026 for mechanical (hvac) work at 620 I St NW. Allow compliance with ASHRAE 34-2024 Addendum A with regard to A2L refrigerants in lieu of DC 2017 Mechanical Code DC 2017 Mechanical does not require leak testing of refrigerant piping or pressure integrity testing of refrigerant piping to prevent leaks. Instead it requires un-occupied shafts for refrigerant piping to have ventilation interlocked to operate if a leak is sensed. This in effect is an expensive complicated "band-aid" approach to compensate for inferior piping installations that are more prone to leaks.

- Permit number: MVQ2600066
- Issued: Jun 29, 2026
- Type of work: Mechanical (HVAC) (city: Construction, variance)
- Status: Issued (city: Permit issued)
- Reported cost: Not listed
- ZIP code: 20001
- All permits at this address: https://nearbypermits.com/washington-dc/address/620-i-st-nw/

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Source: DC Department of Buildings permit data (https://opendata.dc.gov/datasets/7296e6392349498bb6ba6ba3db836644_18), District of Columbia, CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Checked 2026-10-08 22:56 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 620 I St NW: https://nearbypermits.com/washington-dc/address/620-i-st-nw/