Cooling Tower Registration & Maintenance is Required By Local Law 77

Stay Compliant. Avoid Fines.

In accordance with Local Law 77 (LL77) and Chapter 8 (Cooling Towers) of Title 24 of the Rules of the City of New York, building owners and property managers are required to register cooling towers, evaporative condensers, and fluid coolers with the City and to annually certify with the Department of Buildings (DOB) that they have been tested, cleaned and disinfected.

Summary Of What Is Required:

Register existing cooling towers, evaporation condensers & fluid coolers as at September 16, 2016 with New York State and NYCDOB as at September 17, 2015 Cooling Tower Registration.

Register new cooling towers, evaporation condensers & fluid coolers before use.

Hire Environmental Consultants Experienced with ASHRAE Standard 188P & CTI Guidelines WTB-148.

Mandatory NYC Cooling Tower Maintenance

  • Develop and follow maintenance program and plan (MPP) in line with American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE 188-2015) Standard.
  • Inspection – Every 90 days & Before Seasonal Start-up by Qualified Professional
  • Testing – Every 90 days by Qualified Professional
  • Cleaning – Twice Annually by Qualified Professional
  • Disinfection – requires the use of biocides, which requires commercial pesticide applicator certification in Category 7G – NYC Cooling Towers, Pulp & Paper Process issued by the NYS Department of Environmental Conservation (NYS DEC)

Annual Certification


Stay Compliant. Avoid Fines.

Talk with us about how we can keep you compliant.
Call Donnelly Mechanical at (718) 886-1500

Cooling Tower

New York City Commissioner’s Order

On August 6 2015, the New York City Health Commissioner issued an order to all owners of buildings with cooling towers in response to the Legionnaires Disease Outbreak in the South Bronx. Building owners are now required to register cooling towers, evaporative condensers, and fluid containers with the Department of Buildings at Cooling Tower Registration.

New York City issued this order because of an outbreak of Legionnaires’ Disease in the South Bronx. Several cooling towers in the affected neighborhoods tested positive for legionella. The outbreak has not affected the City’s drinking or bathing water; it is safe for building residents to drink and bathe with tap water. It is also safe to use home air conditioning units and to be in air conditioned areas.

Knowledgeable Techinicans

The technicians are knowledgeable and professional which is very important to us. They get right to work and don’t waste any time.
– JWT, 466 Lexington, Manhattan
John Fallon

Need more info?

Contact your hands-on Project Owner now!

CLICK HERE

Need more information? Call Donnelly Mechanical at (718) 886-1500 today.

Fast response and a worry-free resolution – that’s The Donnelly Difference.