Complete Energy Solutions (CES) has aligned itself with Seasoned, Industry-Specific Experts to help form – The COMPLETE Group of Companies.

The Complete Group of Companies provides an integrated solution in everything Energy Management. Each entity within the Complete Group of Companies, offers exceptional expertise, specializing in concentrated areas of service. Our clients can choose one, or all areas of service confidently, knowing they are in good hands. The Complete Group of Companies offer incomparable solutions which are cost effective, energy efficient, customizable, and practical.

Our approach involves an unwavering commitment to our clients, resulting in reduced costs, optimized performance, and most importantly, satisfied customers.

Experience the COMPLETE Difference


Maintenance Contracts


Annual Savings


Capital Projects

Service Areas

Greater Toronto Area
Golden Horseshoe


Complete Energy Solutions Ltd. (CES) has experienced unprecedented success, culminating in tremendous client and revenue growth while progressively transitioning into various vertical markets. The strategic vision and overall leadership of the executive team, led by CEO Emmanuel Efraimidis and COO, Channa Perera, has enabled CES to execute on its strategy, positioning themselves to add multiple premier organizations into the portfolio of service offerings – forming The COMPLETE GROUP of COMPANIES.

With our executive leadership having a wealth of knowledge amounting to more than 50 years in the industry, the Complete Group of Companies have earned the trust and respect, to be the industry’s most progressive leaders in Energy Management. Our top caliber talent has enabled us to become leaders in Energy Management, tailoring services to suit the specific needs of our customers.


Emmanuel Efraimidis

C.E.O and Co-Founder

It seems appropriate that Emmanuel Efraimidis has come full circle in life forming the Complete Group of Companies. From the age of 9 when his father took him to various mechanical and boiler room plants showing him the vast array of equipment, Emmanuel was captivated by the sheer size and performance of this equipment. After all, having a father that spent the better part of 30 years servicing and maintaining some of the largest buildings in our city, laid the foundation for Emmanuel wanting to build a unique organization that provided the absolute best service, value, and expertise.

Emmanuel’s extensive knowledge and experience have spanned many decades and several industries. His executive leadership roles with Fortune 100 organizations have enabled him to incorporate True Best Practices and bring a level of sophistication to an often called, unsophisticated industry, garnering praise from both clients and employees alike. Whether presenting to hundreds of property managers or consulting with hundreds of Board Directors, Emmanuel’s philosophy is to educate key stakeholders so that they have the right information at their disposal in order to properly define and meet their objectives. Emmanuel continues to serve on multiple boards, including his appointment as Vice President at CAI Canada.

One of the core and guiding principles at The Complete Group of Companies is continuously attracting and retaining the best possible people. After all, the caliber and commitment of our employees help to distinguish The Complete Group of Companies and lay a proper foundation of excellence! Attracting and rewarding top talent will ensure clients continue to receive the best level of advice and service. Being a trusted advisor is taken very seriously. Providing clients with the proper knowledge along with exceptional service and value will assist them to not only better maintain their buildings but provide them with the necessary tools to succeed. This success is predicated on the success and positive experience of all the clients at The Complete Group of Companies! It is precisely why we continue to grow and further distinguish ourselves..…..after all this is The COMPLETE difference!


Channa Perera

C.O.O. and Co-Founder

Channa Perera, Chief Operating Officer at Complete Energy Solutions has over 35 years of experience in the HVAC/R and Energy Management Industry.

After graduating from Willesden College and the South Bank University of London, he immersed himself in the field immediately. With 10 years of experience as a field mechanic in the Toronto area, he has worked with virtually every variation of Heating, Air Conditioning, and Refrigeration systems. Early in his career he underwent comprehensive training in HVAC units and systems, including manufacturer-specific education.

Channa moved into a Service and Project Management role immediately following his time in the field. During this time he oversaw operations with a large-scale mechanical contractor based in Toronto. Supervising a large team of technicians, leading the estimating team, and overseeing all projects and services were among his responsibilities.

In 1997, Channa accepted a position as Chief Engineer – Heating, Cooling, Refrigeration, Instruments, and Calibration at King Khalid International Airport in Saudi Arabia. Here, he was responsible for all HVAC and R operations throughout the airport, which included 3 Commercial Terminals, the Royal Terminal, Private Aviation Terminal, and the Central Plant.

Moving back to Toronto, he played a major role in building a Toronto -based mechanical contractor. Here he established the Building Automation department, service fleet, and construction team. He oversaw all operations, including all activities related to the aforementioned, while playing a critical role in client relations, business development, overall company management, and expansion.

Channa Perera and Emmanuel Efraimidis founded Complete Energy Solutions, amalgamating their extensive experience, unmatched industry experience, and unwavering commitment to clients. They now lead the most prolific and fastest-growing HVAC and Energy Management organization in the Greater Toronto Area.

With a dedication to exceptional work, and extensive knowledge in HVAC, Building Automation, Energy Management, Service, and Construction, Channa leads all operations at CES, ensuring that clients are always experiencing the best in the industry.

The Executive Team


Neil Patten, C.E.M.


Neil Patten has over 15 years of experience within the HVACR industry.

Prior to leading Complete Chiller Solutions team as President, Neil lead the Daikin Applied team in Canada in sales from 2015-2019 as each project sold would be handled and managed by Neil. Neil was instrumental in driving revenue growth, and retention and fostering relationships with large clients that spanned various vertical markets.

Neil comes from a trade and educational background family and was able to capitalize on both ventures early in his career; earning his 313A Journeyman status as a chiller mechanic, gas fitter 1 license and having the privilege of teaching chiller-oriented courses along with night school HVAC apprenticeship courses.

Neil is an avid volunteer in his community, enjoys giving back, and always finds time for worthy causes.

Neil holds multiple trade licenses as well as Certified Energy Manager (CEM).


Dave Gray

Director of Operations

Dave Gray, a self-made entrepreneur, owned and operated his own Plumbing Business for over 20 years. Building up to those years of success, Dave quickly progressed from Journeyman Plumber, which requires completing an educational training program plus five years of experience – to becoming an exceptional, trouble-shooting Master Plumber.

In a short period of time, he moved on to supervising his own fleet of journeymen. Dave has served as a Master Plumber with more than 30 years of experience with numerous certifications resolving complex plumbing matters over his career.

Dave’s numerous years servicing the Condominium and High-rise industry have made him an expert in the area of Full Riser Replacement, Full Kitec Replacement, Drain and Stack Cleaning, as well as potable water, sanitary drainage, and stormwater drainage.

Dave recognized a growth opportunity when approached by founders, Emmanuel Efraimidis and Channa Perera, to lead CES Plumbing. Dave leads a large team of skilled professional trades people including estimators, foremen, plumbers, and apprentices, and is responsible for the planning and supervision of CES Plumbing projects and service work throughout the GTA.

From mechanical rooms to the boardroom, Dave’s warm demeanor and “can do” attitude make him a favourite amongst clients and staff.  He works closely and effectively with property managers, superintendents, and board members to provide expertise, accurate information, and exceptional service ensuring buildings remain in optimal condition.




Ray Patten has 20+ years of experience in the mechanical service industry holding a variety of positions and responsibilities with different areas of expertise. With an entrepreneur instinct and several licenses including 313A Red Seal Refrigeration Mechanic, Certified Energy Manager (C.E.M), G.2 Gas Technician, UA Star Certified, Ray has an intimate understanding of what it takes to deliver Best in Quality Service and the Highest Standards in Customer Excellence.  Mr. Patten also served on the Apprenticeship Committee for Local 787 as a Competition Trainer/Coach for 4 years. 


He has worked for large organizations such as Black & McDonald creating comprehensive maintenance programs tailored to client objectives and managing projects from creating proposals to executing the results. A natural speaker who advocates for effective solutions while implementing safety measures, Mr. Patten prioritizes life safety in mechanical equipment.

Ray Patten joins us as Director of CES PowerOn and we look forward to his contributions and extensive expertise. From change management to building on business relations, Ray serves as a fundamental contributor to the continued company growth implementing new development programs while adhering to industry standards.

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