At Hamilton Oliver Thermal Control we strongly believe in building positive, long term relationships with our customers. We take an honest approach without compromise, which has allowed us to build trust over time – trust that we never take for granted and build upon year over year.

Here’s what some of our satisfied and long-time customers have to say:


Steven Gale, Area Manager - St. Louis Franchise Limited.

“Adam at Hamilton Oliver believes that if you treat customers honestly and fairly, they will be customers for life. That is what we are at 2050 Yonge Street. They back it up with fantastic service, exceptional work at a fair price”


Trevor Micallef, Maintenance Department - UPak Disposals

“Hamilton Oliver has been providing UPak Disposals high quality, diligent, and reliable HVAC services for both of our plants for the last four years. In that time, we have always been very impressed with their attention to detail and passion for customer service. When issues occur, they have always been there by phone to offer suggestions for us to diagnose the issue ourselves and make quick repairs or to come on site to make the necessary repairs in a timely manner; they always make us feel like we are their top priority. They are trustworthy and true professionals. All the work they do is explained in detailed written quotes and alternative repairs are always offered to keep costs down. In the beginning I solicited quotes for repairs from other service suppliers that Hamilton Oliver quoted us and always found their prices to be the best.  They have over the years replaced some of our large roof top units and I was very impressed with the way the work was coordinated and performed. I would recommend them to anyone for yearly maintenance, small repair or large installations.”


Bob Telewiak, General Manager - Hard Rock Cafe Toronto

“We have worked with Hamilton Oliver for years. The company is reliable, accountable and very serious about taking care of all your HVAC needs. The business has been extremely attentive, timely and dependable with any and all work. The transparency the team has with communication is extremely appreciated. If there is a sign of a problem or issue, they do not hesitate to give you all the information. So, you can make a timely decision on any recommended work. They are great partners of ours who, like the postman will come out rain, snow or shine to get a job done. The customer is definitely put first. I appreciate their partnership and rely on their expertise to ensure I do not have to worry about the hot or cold stuff. They are now a 2nd generation company, with tenured staff and technicians…they take their job seriously!! I recommend Hamilton Oliver without hesitation, you should too!!”


Johnny Guglietti - Tamarack Lumber

“Hamilton Oliver has been handling all the maintenance and service on our 8 buildings here at Tamarack Lumber for over 20 years. We have been pleased with their performance, transparency, and fairness with all their work.  In addition, they just completed a completely new 9,000 square foot building of all new equipment and again we were very happy with their work that was done on time and on budget. Thank you Hamilton Oliver!”


Frank Hacking, P. Eng., Engineering and Maintenance Manager - Winpak Portion Packaging

“As one of the very first customers of Hamilton-Oliver Thermal Control, dating back some 25+ years, I have had the privilege of working with 2 generations of business owners during my tenure here at Winpak. Winpak is an extremely demanding customer, and prides itself on establishing mutually beneficial working relationships with all of its suppliers.  We consider Hamilton Oliver Thermal Control to be one of our “top” suppliers as they continually provide high quality, and reliable HVAC sales and service. They take the time to know and understand how the customer operates, and they conduct business in a way that best-suits the customer’s needs. All of their technicians work in a safe and professional manner and fully comply with company policies and procedures when on-site. Whatever the situation, as an HVAC sales and service provider, Hamilton-Oliver can be relied on to get the job done!”


Adrian Niedermuller, Service Manager - Weston M.B. Collision Limited

“We have been Hamilton Oliver customers for more than 15 years. Over this time period we have received great service from Adam and his team. Always efficient and prompt service. Their preventative maintenance program has saved us thousands in repair costs.”


Todd Miller, Store Planning & Development Property Manager - Savers, Inc. I Value Village I Village des Valeurs

“Hamilton Oliver Thermal Control does great HVAC repairs. They have supported Value Village Retail Thrift Stores for the past 5 years in Ontario CA. They deliver on fair pricing, great service, written estimates that are easy to understand, follow up and timely invoicing. This has created more confidence for the store managers and helped me as a property manager keep the HVAC units, air curtains and interior heaters operational. I recommend Hamilton Oliver Thermal Control for all your HVAC repairs, replacements, and preventative maintenance in the GTA.”


Rick Smith, P. Eng., Property Manager - Ryerson United Church Ancaster

“Ryerson United Church, Ancaster has depended on Hamilton Oliver Thermal Control for many years as our sole provider for HVAC service. The church is a large site with a complex HVAC system including large boiler and auxiliary electric heat and air conditioning, parts of which are 60 years old. Hamilton Oliver has and continues to provide excellent service for our facility through knowledgeable technicians including Luke and Shawn. Customer service is friendly, fast, and effective. Keep up the good work!”


Andrew Ponsen, Director of Facilities - King’s Christian Collegiate Oakville

“Hamilton Oliver has been a key support to Kings Christian Collegiate for over 12 years; first as a subcontractor installing a new zoning system for 10 new HVAC units on our phase 2 construction and from there they started looking after our 23 units. Since they started with us, we have gone through two more expansions and added 11 more units for a total of 34 HVAC units. Excellence in scheduled maintenance inspections, fast response times to our no heat or no cooling calls and a proactive view to repairs and replacement of parts make them our number one choice. All of the staff at Hamilton Oliver are an asset to the company, providing excellent customer service. Thank you! You play a vital role in keeping over 650 students and the many clients who rent our facilities, warm in winter and cool in summer!”


Jeff Orosz, Maintenance Supervisor - E.D. Smith Foods Ltd.

“Hamilton Oliver has been servicing our HVAC systems for several years. Service response and quality has been exceptional. If you have worked with tuning HVAC systems, you will appreciate a professional team that takes all concerns into matter and deals with them at the same level.”

5035 North Service Road, Unit D17

Burlington, Ontario L7L 5V2


Toll free:
+1 866.389.4033