In the process of leasing the 3515 space our landlord had the shop A/C's put into working condition.
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The work was done on June 8, 2016 by
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TD Heating <br>
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33 S East River Road<br>
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Des Plaines IL. 60016<br>
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773-267-7727
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They also provided an estimate for an annual service contract as required by our lease. The recipt for the work and the estimate can be found in the PS1 google drive under facilities/HVAC.
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This makes some of what is below no longer relevant.