I began in HVAC after attending Aviron Technical School In 1981. I worked for many small companies Installing Home Heating Systems, Thermopumps and air conditioning. I then worked on Commercial air Conditioning mainly on package units on roof tops. I then moved on to industriel units that were used in paper manufacturing. This gave me a broad knowledge of HVAC systems. I started my own company in 1990. I used my middle name Hamilton. We have gone back to homes and have installed mini splits, Heat pumps, forced air electric furnaces, Humidification both water and steam, package roof top, and now central Inverter using DC voltage. I have been in this trade for 31 years.