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Complete Commercial Heating, Ventilating, Air Conditioning, Refrigeration and Plumbing solutions.

Backed by 29 Years of reliable service you can trust

Hiring Service Technicians

We are looking for hardworking, dedicated HVAC service technicians to join our team! You must be self-motivated with a professional attitude and desire to take care of our customers.

At Climate Systems, we value our employees and treat each one like family.

Qualified Technicians will be assigned a company service vehicle. We offer competitive wages, health, dental and life insurance, vacation time, 401K with company match, paid holidays, short and long-term disability. Our customers are local to the Chittenden County area!

Position requires experience in the HVAC field with a valid license; a valid driver’s license, and clean driving record. Must be able to climb ladders, carry heavy equipment. Position is for a 40-hour work week and you must be available for overtime as the work load dictates. Position requires week long on-call availability, typically once every 2 months.

Competitive wages will be paid based on skill level, experience and state licenses carried.

Please send a completed application (click the PDF to download or pick-up at our Williston office), cover letter and resume to:

Sales & Support


We provide service and solutions for all aspects of your building's mechanical system. Our trained technicians service all brands and manufacturers of Heating, AC, Plumbing and Refrigeration equipment and most Direct Digital Controls systems. From proactive maintenance plans to 24/7 on-call service, we're here to ensure your mechanical system runs smoothly.

Direct Digital Controls

Improving energy efficiency and reducing operating costs are priorities for a number of clients, which is why we service and install the majority of D.D.C. systems. Our technicians work with you to ensure the right D.D.C. system is in place for your specific needs. This means clients have the ablity to upgrade or add new controls without removing their existing system. We also believe our D.D.C. system should be yours. So you have full access and control at all times with the assurance of knowing our team is on call to provide support for any issues that arise. 

Design Build

Whether it's new construction or a building upgrade, our team works with you to understand your goals before beginning the design process. Once project needs are determined, we get to work designing practical mechanical and controls systems that are efficient and affordable. State-of-the-art AutoCad design drawings, electronic operations, and maintenance manuals that make it easy to understand and use your system going forward. 

Preventive Maintenance

To keep your mechanical systems running efficiently and minimize emergency repairs, we offer custom designed preventive maintenance programs backed by our team of experienced professionals. 

Contact Us


With a steadfast vision of how business should be done and a handful of trusted HVAC technicians, Leo Ioannou founded Climate Systems, Inc. in May of 1995. Driven by a strong work ethic and commitment to customer service, Leo and his team grew Climate Systems into the respected full-service HVAC/R provider it is today. 

We provide a complete range of commercial services including the design and installation of new equipment, retrofits of existing systems, mechanical plumbing systems, sheet metal fabrication, direct digital controls, comprehensive maintenance programs and emergency service. 



Year Established
Accredited since 2010


At Climate Systems we take care of our employees so they can take care of our customers. Our technicians are among the best trained in the area and we are always looking for the right candidate! If you are an experienced and qualified HVAC/R service technician who believes in putting the client first, we encourage you to apply. Please send a completed application (click the PDF to download or pick-up at our Williston office), cover letter and resume to:



For any inquiries, questions or commendations, please call: 802-660-9969 or fill out the following form

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177 Avenue C, Ste 110

PO Box 914

Williston, VT 05495


Tel: 802-660-9969

Fax: 802-863-0343

Get a quote: 802-660-9969
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