Business Details
31 Years
experience
Emergency
services
Your Trusted Commercial HVAC Partner in Williston, VT
Climate Systems, Inc. was founded in May 1995 by Leonidas Ioannou, a visionary businessman deeply committed to exceptional customer service. With over 29 years of experience, we have grown into a trusted full-service provider of commercial HVAC, refrigeration, and plumbing solutions. Our team prioritizes understanding client goals before designing efficient, cost-effective mechanical systems. We specialize in new construction, system retrofits, and preventive maintenance programs tailored to each client's unique needs. Our technicians service all major equipment brands and have expertise in Direct Digital Controls (DDC) systems.We provide 24/7 emergency support while maintaining complete transparency and access to system controls. Employee well-being remains central to our operations, with comprehensive benefits and professional development opportunities. Our equipment servicing capabilities cover the entire mechanical lifecycle, from installation to ongoing maintenance. Headquartered in Williston, Vermont, we serve clients throughout Chittenden County. Our commitment to quality and reliability has earned us a respected position in the industry. We continue to honor Leonidas Ioannou's legacy by maintaining the same values that founded our company.
Services
HVAC Service
Direct Digital Controls
Design-Build
Preventive Maintenance
Emergency Repairs
Details
- Year established: 1995
Highlights and features
- We have 29 years of experience in commercial HVAC solutions
- Our team provides 24/7 on-call emergency service
- Technicians service all major equipment brands and DDC systems
- Employee-focused company with comprehensive benefits packages
- Custom preventive maintenance programs backed by experienced professionals
Services
HVAC Service
Our commercial HVAC service covers all aspects of heating, ventilation, and air conditioning systems. With state-certified technicians and 29 years of experience, we service all major equipment brands. Our preventative maintenance programs help minimize unexpected breakdowns while our emergency repair service is available 24/7.
Direct Digital Controls
We provide comprehensive DDC system solutions for commercial buildings. This includes installation, maintenance, and optimization of energy-efficient control systems. Our technicians ensure seamless integration with existing infrastructure while providing full system access to clients. We work with all major DDC platforms to reduce operating costs and improve system efficiency.
Design-Build
Our design-build service creates customized mechanical systems for new construction and building upgrades. We collaborate directly with clients to develop efficient, cost-effective solutions using AutoCAD design and modern control systems. Services include system retrofits, sheet metal fabrication, and complete mechanical installation.
Preventive Maintenance
Preventive maintenance programs ensure optimal system performance while reducing emergency repair needs. Our experienced technicians develop custom maintenance schedules for commercial HVAC and plumbing systems. Programs include regular inspections, performance tuning, and detailed maintenance reporting to extend equipment lifespan.
Emergency Repairs
Emergency repair services provide immediate response for critical HVAC and plumbing issues. Our on-call technicians are available 24 hours a day, 7 days a week with typical response times under two hours. We maintain a fleet of fully equipped service vehicles to handle urgent repair needs promptly.
People
Leonidas Ioannou
Founder
Leonidas Ioannou founded Climate Systems in 1995 with a vision for exceptional service. Known for his business acumen and caring nature, he built a company that treats employees like family while delivering quality HVAC solutions. His legacy continues to shape our values.
Questions
What HVAC services do you offer for commercial properties?
We provide complete commercial HVAC solutions including system design, installation, retrofits, emergency repairs, and preventive maintenance programs tailored to your specific needs.
Are you available for emergency HVAC service?
Yes, we offer 24/7 emergency service for commercial HVAC issues with technicians available for immediate response.
Do you service all types of HVAC equipment?
Our technicians service all major brands and manufacturers of heating, air conditioning, plumbing, and refrigeration equipment.
What areas do you serve?
We primarily serve commercial clients throughout Chittenden County, Vermont from our Williston location.
What is your experience with DDC systems?
We specialize in Direct Digital Control systems with installation, maintenance, and customization services that improve energy efficiency and reduce operating costs.
Reviews (5)
Alexis Anderson
May 23, 2022
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This company is awlays there when we need them no matter the time of day or time of year. The people behind the company are genuine and are experts in their field. We use them for numerous types of systems across the state of VT.
Greg Alling
Jan 06, 2022
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The entire Climate Systems team was excellent from start to finish. The quote was reasonable and the work was perfect. They were a pleasure to work with and I highly recommend. Service: Ductless heating & A/C services
Kevin Magnus
Jun 14, 2021
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They provided excellent service. The guys were great and knowledgable and answered any questions we had. 2 days to install. And Derek was great who came and gave us the estimate. Right on the money and anytime I called he had the answers and got back to me in a timely manner. We highly recommend them for your HVAC service. Services: Ductless heating & A/C services, Install thermostat
Chal Nunn
May 07, 2021
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Derek Poquette and his team at this company are the best contractors I have dealt with in Vermont. Responsive, thoughtful, friendly, follows through and everything works perfectly. They did a first class job. I highly recommend. Services: Heating system installation, Install AC
Mike Lambert
Apr 08, 2020
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Excellent customer service! I'm a chief Engineer for a large local hotel. When ever I have a problem requiring their expertise, they are there! I have literally called them and said I have an issue that needs immediate attention and hung up the phone and they were pulling in. Thanks guys for your haste to take care of my issues, your eagerness to please, and your professionalism!
