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By 2001, the building was degrading, with toxic fumes, rotten and boarded-up windowframes, and suspected asbestos and lead paint. The foundation had been X-rayed eight years prior, showing crumbling basement walls. Boiler problems, faulty thermostats, and three fires had affected the building. [14]
The gas savings for manual thermostat replacements (10% per thermostat) was found to be larger than for programmable thermostat replacements (8% per thermostat). The difference in electricity savings between homes whose prior equipment was a manual thermostat or programmable thermostat was found to be minimal.
A drawback is the installation cost, which can be slightly higher than traditional HVAC systems. Energy efficiency can be improved even more in central heating systems by introducing zoned heating. This allows a more granular application of heat, similar to non-central heating systems. Zones are controlled by multiple thermostats.
Pneumatic control systems are still used in many buildings, especially in metropolitan areas, because of their large base of installation throughout the 1960s and 1970s. [22] Throughout the 1980s, analog electronic control devices became increasingly popular. [23] They provided faster response and higher precision than pneumatics.
One of the program's initiatives is to install 925 electric vehicle charging stations in Central Ohio by the end of 2020. [2] As of September 2020, the organization had installed 914. [4] Smart Columbus has also been testing driverless shuttle technology through pilot programs beginning in 2018. [5]
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