# Mechanical (HVAC) permit MEC2026-01333 at 3890 Darley Ave, Boulder

Boulder Planning and Development Services permit MEC2026-01333: issued Aug 3, 2026 for mechanical (hvac) work at 3890 Darley Ave. Replace existing 3-ton straight-cool condenser and matching air handler with a new 3-ton Lennox EL22KCV variable-speed air conditioner and CBK47E single-speed air handler. No structural changes. PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must undergo pressure testing. To facilitate the inspection process, please provide photographic evidence of the pressure test directly to the assigned inspector on the day the rough mechanical inspection is scheduled. Approved tests: 10 ft water test, 5 PSI positive pressure, or Negative 5 psi air pressure test for 15 Minutes.

- Permit number: MEC2026-01333
- Issued: Aug 3, 2026
- Type of work: Mechanical (HVAC) (city: Mechanical Permit, Mechanical HVAC/Solar)
- Status: Finished (city: Letter of Completion)
- Reported cost: $24,998
- ZIP code: 80305
- All permits at this address: https://nearbypermits.com/boulder/address/3890-darley-ave/

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-08 09:32 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 3890 Darley Ave: https://nearbypermits.com/boulder/address/3890-darley-ave/