Having toured many buildings, both older and newer I have noticed that all of the newer office skyscrapers built in the 1980s-present utilize electric heat strips for space heating rather than HW or Steam Boilers. Now if you visit an office tower or other commercial property built in the 1970s or before, boilers are often utilized for heating needs. It seems the building has to be over 30 years old before you will find boilers in use. In fact I know of an office tower built as late as 1981, which utilized HW heating boilers. However from about 1982 forward it seems that all new construction utilizes electric strip heaters.
Does anyone here have an idea what brought about this change in HVAC design??? The boilers provided a good source of heat for a large structure such as an office tower. I do not see why newer properties do not utilize them. I visited a 72 story tower, in my city. All 72 floors are heated by electric strip heat. Why not use a boiler in an application like this? The building was built in the mid 80s. We also have a 56 story tower, in our city. It was built in the 1970s, and has electric boilers. Is age really the issue?? Did HVAC engineers suddenly come to the realization in the 1980s that boilers were too antiquated and inefficient for new construction?? Any insight regarding this question is appreciated!!