Durham Energy Specialist Limited (DES) is a Mechanical and Electrical Consulting Engineering Company located in Whitby, Ontario.  DES was established and founded by William Skribe in 1978 offering engineering and energy conservation opportunities as part of design-build services.  In 1998 Leanne Skribe joined DES and the Skribe father-daughter team expanded the Company offering consulting services throughout the GTA.  Leanne Skribe became a shareholder of DES in 2006 and sole Owner in 2008, and continues to grow the Company which currently employees 10 staff.


We provide mechanical and electrical consulting engineering services for the construction industry including municipal, institutional/schools, health care, public facilities, industrial, commercial, retail.   Mechanical engineering services include Heating, Ventilation and Air Conditioning (HVAC), Controls, Plumbing and Fire Protection.  Electrical engineering services include Power, Lighting, Life Safety and Communications.

Our proven capabilities and experience using qualified and motivated engineers and designers provide first-rate service, successful projects and customer satisfaction based on the following key principals:  

  • Effective and cost conscious design
  • Attention to detail and production of clear, accurate, complete drawings
  • Energy conservation and serviceability
  • Communication with client
  • Communication and coordination between disciplines including sub-consultants
  • Communication with installing contractors
  • Same level of dedication to each project whether large or small
Our dedicated team is committed to delivering projects while meeting or exceeding Client expectations.

Leanne Skribe, P. Eng.


Professional Engineering designation since 1997.

Consulting Designation since 2010.

Leanne has worked in the Mechanical and Electrical field for 22 years.  Her experience is well diversified among all mechanical and electrical disciplines and she has experience in both design and installation (consulting and contracting experience).  Her attention to detail provides for precise working drawings and Client satisfaction.

Project Responsibilities: Principal/Senior Engineer throughout project, overseeing all aspects.

Jeff Greer, P. Eng.

Project Engineer

Engineering experience since 1999, Professional Engineer since 2011.

Jeff has experience with construction projects for 11 years.  Jeff provides detail and excellent design experience.

Project Responsibilities: Intermediate Engineer with involvement throughout all aspects.

Luigi Conforti, P. Eng.

Electrical Engineer

Engineering experience since 2011, Contracting experience 2009-2011.

Luigi has electrical experience with design and hands-on contracting work in the field.

Project Responsibilities: Electrical Engineer Intern

Brad Timson, E.I.T.


Brad has close to 10 years of varied, mechanical design experience and provides a practical minded, detail oriented approach to each project.  He is up to date and well versed in the latest HVAC design standards and codes applicable to mechanical building services.

Project Responsibilities:  Mechanical Designer with responsibilities from initial project conception through to construction completion.

Mike Sinopoli, BASc


Mike recently joined DES and comes with extensive experience in larger, multi-unit residential and mixed use buildings.  Mike’s excellent mechanical aptitude and design skills are a welcome addition to the team and allow him to take on a wide variety of projects.

Project Responsibilities: Mechanical Designer with involvement throughout all aspects of project.

Raphael Anyike, BASc


With engineering experience since 2013, Raphael brings a thorough working knowledge of electrical principles and design requirements to a wide range of projects.

Project Responsibilities:  Assisting Senior Electrical Engineers on all levels of projects, including site assessments, service sizing, power distribution and lighting designs.  Help oversee and work with Electrical Technologists.

Juli Cluett

Office Manager/Project Administrator

Office Manager/Project Administration

Project Responsibilities: Project Administrator, responsible for administrative duties throughout all stages of projects. Juli also assists with drafting where required.

Matthew Coffee

Senior Draftsman

Matt has over 20 years’ experience in AutoCAD drafting.  Matt leads the AutoCAD department and is also involved with site audits.

Project Responsibilities: Senior Draftsman responsible for drafting.

Gavin Weaver

Mechanical Engineering Technician

Gavin has been working with DES since 2013.

Project Responsibilities: Design Assistance, Drafting

Brandon Herd

Electrical Engineering Technologist

Brandon has been working with DES since 2016.

Project Responsibilities: Design Assistance and Drafting

Need Our Help?

DES has staff with both Professional Engineering and Consulting Engineering Designations. 

Get in touch with us for assistance with all of your engineering needs.