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About Us

About Us

FAMILY OWNED SINCE 1985



195Liam.jpgLiam O'Farrell, PE - President

Liam started working in the family business when he was still in high school. During the summers, he gained hands-on experience in the sheet metal, piping and preventive-maintenance aspects of the business. After high school, Liam attended Rensselaer Polytechnic Institute in Troy, NewYork, where he received his Bachelor of Science degree in Mechanical Engineering.

Liam joined Mountain Air as a full-time employee in 1992 and began learning the basics of HVAC design and project management. In 1997 Liam received his professional engineering license from the State of Vermont; he is also a registered professional engineer in New Hampshire. In 2005, Liam and his brother Tim purchased the company from their parents,Jack and Dede.

Today Liam is responsible for the overall leadership, operation and direction of Mountain Air Systems. He is dedicated to supporting his employees while continually honing the company's focus on customer service.

Email: lofarrell@masvt.com

 

 

 

195Jack_and_Dede_OFarrell2.jpgJack & Dede O'Farrell - Founders


Jack and Dede are from Chicago, Illinois, where they both graduated from Loyola University. After five years in the Air Force, living and traveling all over the country, they decided they wanted to relocate to the East Coast. So in 1972, Jack, Dede and their four children moved to Vermont. Jack worked for two local HVAC contractors as a service technician and service manager. In 1985, Jack and Dede decided to start their own HVAC service company, and thus, Mountain Air Systems, Inc. was born.

Originally Jack had two partners, Joe Monty and Toby Buxton. Toby's involvement with the company was brief, but Joe remained active with the company until 1992. By then, Tim and Liam were full-time employees and the groundwork for the family business was set. Business was good; Mountain Air had a trusted reputation, loyal customers and a workforce of skilled, happy employees.

At the end of 2005, Jack and Dede were both proud and happy to turn over the operations and ownership of Mountain Air Systems, Inc. to their capable and dependable sons, Tim and Liam. Jack and Dede remain on the Board of Directors and are active as consultants for the company. Most importantly, the culture of customer service that they established lives on and forms the foundation for the company that Mountain Air Systems is today.







195Tim2.jpgTim O'Farrell 


Tim began learning the HVAC trade by working alongside his father during summers off from school. After high school, Tim attended the State University of New York at Delhi where he studied HVAC/R and electrical controls and graduated with an Associates Degree in Occupational Studies.

Tim joined the family business full time in 1988 as a service technician and HVAC/R installer. Later, Tim moved inside the office as the Service Division's dispatcher and coordinator.

In 2005, Tim, along with his brother Liam, purchased Mountain Air Systems from Jack and Dede. Tim ran the Service Division from 2005 until his untimely passing in 2011.  Tim played a large roll in the formative years of Mountain Air Systems and helped grow the company to what it is today.  Tim is greatly missed by his entire family and all of the employees at Mountain Air who worked alongside him.

 

 

 

195mark.jpgMark Wheeler - Service Manager

Mark joined Mountain Air Systems in 1991, as a service technician with 15 years of previous HVAC experience.  During Mark's 21 years with the company he has been promoted from service technician, to service dispatcher, to service supervisor, to his current position of Service Manager.  Mark is responsible for managing the entire service department.  Mark is also a teacher at UA Local 693 and just received his Associates degree in Industrial Training from Washtenaw Community College in Michigan.

Email: mwheeler@masvt.com

 

 

 

195Jer.jpgJeremiah Trombly, PE - Design Engineer

Jeremiah joined Mountain Air Systems in 2004, two years after receiving his Bachelor of Science degree in Mechanical Engineering from the University of Vermont.  After 4 years with the company, while gaining valuable engineering experience working under Liam O'Farrell, Jeremiah received his professional engineering license from the state of Vermont.  Jeremiah has designed and managed several projects that have received LEED certification.  Jeremiah is responsible for the company's design build HVAC and plumbing projects as well as project management.

Email: jtrombly@masvt.com

 

 

 

195Aaron.jpgAaron Robtoy - Project Manager

Aaron joined Mountain Air Systems in 2001 as a project manager.  His experience in the HVAC and plumbing fields stems from his involvement with the Local 693 Plumbers and Pipefitters Union where he has been a member since 1987.  Aaron worked as a foreman in the union where he earned his Master Plumbers license and became a certified pipe welder and later a project manager.  Aaron has extensive experience with stainless steel piping for the food and beverage production industries.  Aaron's responsibilities at Mountain Air Systems include estimating, labor coordination and project management.

Email: arobtoy@masvt.com

 

 

 

195Jeff.jpgJeff Worth - Project Manager

Jeff joined Mountain Air Systems in 2005 as a project manager.   His experience in the HVAC and plumbing fields stems from his involvement with the Local 693 Plumbers and Pipefitters Union where he has been a member since 1984.   Jeff worked as a foreman and general foreman in the union where he earned his Journeyman Plumbers license and orbital welding certificate before becoming a project manager.  Jeff's responsibilities at Mountain Air Systems include estimating, labor coordination and project management.

Email: jworth@masvt.com

 

 

 

 

195John.jpg John Nielsen - Senior Energy Services Consultant

John has recently joined Mountain Air Systems as our Senior Energy Services Consultant.  With fifteen years plus experience, John has worked both nationally and regionally, with companies of all sizes, providing efficiency and process consulting and supporting corporate green and fiscal initiatives.  At Mountain Air Systems, John will be supporting our Preventative Maintenance programs with a sharp focus on working with clients to help lower their infrastructure operational costs, conserving energy and extending system life cycles.    

Email: jnielsen@masvt.com