Mechanical System Modifications for AHU Replacement at 1091 Amsterdam Avenue, Manhattan
1091 AMSTERDAM AVENUE, MANHATTAN, 10025 · Morningside Heights
What was permitted
Significant mechanical system upgrades are underway at 1091 Amsterdam Avenue in Manhattan's Morningside Heights neighborhood. This project involves modifications for an Air Handling Unit (AHU) replacement, a critical component for building climate control and air quality.
The permit for this extensive mechanical work was issued on June 12, 2026, with a substantial estimated project cost of $4,734,800. J T & T AIR CONDITIONING (GC) is the contractor responsible for this complex undertaking, which does not involve changes to the building's use, egress, or occupancy.
Homeowners in Morningside Heights should note a major mechanical system upgrade at 1091 Amsterdam Avenue, with an estimated project cost of nearly $5 million, focused on AHU replacement.
What it cost
Issued
June 12, 2026
Expires
August 24, 2026
License
General Contractor
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Filed by J T & T AIR CONDITIONING · 2 permits across 1 neighborhood
View the official permit record
Tracking number, work description, cost, and dates
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View the official permit record
Tracking number, work description, cost, and dates
| Tracking Number | 152058205 |
| Work Permit # | M01184318-I1-MS |
| Job Filing Number | — |
| Work Type | Mechanical Systems |
| Status | Permit Issued |
| Job Description | Herewith filing mechanical modifications for MSM S&R AHU Replacement Project. No change in use, egress, or occupancy. |
| Floor / Unit | Cellar, Floor Number(s) 14 through 15, Floor Number(s) 1 through 1 |
| Estimated Cost | $4,734,800 |
| Approved | March 31, 2025 |
| Issued | June 12, 2026 |
| Expires | August 24, 2026 |
| BBL | — |
| BIN | — |
Property Owner
Mount Sinai Health System
Colin Barrett