Nelson Mechanical Design was asked to investigate an underperforming chilled water system at a large home overlooking the south coast of Martha’s Vineyard. The installing contractor had been let go ...

We need to have a new HVAC system for green buildings that can achieve zero CO 2 emissions whenever renewable electricity is available. The supply of 100% renewable electricity may not be available ...

We got a call from a homeowner after his HVAC service company threw up their hands and said they could do no more to get the cooling system to work. They had recently replaced two failed compressors ...

This is the third and final installment in the series on using makeup air unit (MAU) cooling coils as dry coolers. Part I introduced the concept and provided a case study with an air-cooled chiller ...