HILLMAN HOUSES

Harold "Heshey" Jacob, longtime property manger of the sister co-ops Hillman Houses and East River Housing, knew in 2009 that sludgy and sooty No. 6 heating oil was on its way out. With the help of New York State Assembly Speaker Sheldon Silver, who lives in Hillman, he convinced the co-op boards of the 2,500 -unit, seven-building complex to switch to dual-fuel systems using cleaner No. 2 oil and, mainly, natural gas. It was a big, big switch. How did he manage to convince not one but three boards to go that route?

Harold Jacob is the longtime property manger of the Hillman Houses and East River Housing, two of the four communities comprising the Lower East Side's Cooperative Village — colloquially called Co-op Village or "the Grand Street co-ops." He decided in 2009 that the time had come for Co-op Village to wean itself off the highly polluting No. 6 heating oil, ushering in a new era of energy efficiency, dramatically reducing pollution and lowering the energy consumption of the 2,500 apartments in the seven buildings he manages. Hillman and East River now each use a dual-fuel system that relies mainly on natural gas and can periodically switch to the cleaner No. 2 oil.

Recent news affecting co-op / condo buyers, sellers, boards and residents. This week, Zeckendorf Towers goes smokeless, the folks at Alwyn Court and The Briarcliff go homeless, and thanks to 24-hour construction crews, a Rockaways co-op goes sleepless. Plus, three Lower East Side co-ops install fuel-efficient boilers to save money heating 2,700 apartments, Airbnb lobbies politicians to take the "illegal" out of illegal hoteling, and people debate the pros and cons of the proposed co-op admissions disclosure law.