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 ...

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 ...

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 ...