At Denoco, we’re not only proud of our professional, efficient and affordable range of products and services, our customers back us up! Take a look at what real Denoco customers are saying about their experience dealing with us…

“Just can’t stress enough how reliable, efficient and honest Denoco’s employees are.  We often need their services to check furnaces and hot water tanks after floods and other mishaps.  Of course they are required most of the time on an urgent basis, and Dennis and company have never let us down.  They have also repaired or replaced a lot of equipment for us and I can be assured that the repairs and installations are done right!!  Their employees are all educated in the field they work in and you can be confident you have hired a professional.  I would recommend them to anyone.”Melanie Kerr, Winmar Lanark County


“Dales Design and Construction has been building houses in the Smiths Falls, Perth and Kemptville area for the past six years and we have almost exclusively used Denoco for the installation of heating systems, air conditioning, fireplaces, air exchangers and hot water heaters (both gas and electric) in the new houses we build.  Dennis O’Connor and his staff can provide us with the design for ductwork and the heat loss documentation required by building permits.   Required changes to plans and/or after sales service are dealt with in a timely manner and the expertise and work ethic of the staff at Denoco is why we continue our relationship with them as well as recommending them to others.” — T. Dales

“Denoco provides prompt, professional, and excellent service anytime I have called them.  I have had both Manny and Chad over to service my furnace and air conditioner.  They are very efficient and are great at problem solving.  Mark installed a beautiful gas fireplace for me, I love it!  I trust the guys and do not hesitate to leave any one of them at my house when I am not there.  They always clean up after they leave.  They are for sure on my “who to call” list. Thanks Denoco! “– Sheila A.

“After searching for quite a few months for a contractor to install our new furnace, duct work and air conditioning, we chose Denoco.  Julie was very professional, patient and always willing to answer any of our questions as we were travelling down the road to making our final decision.  When the day came to install all this equipment, the men were there, right on time, were very professional and cleaned up after themselves.  We are very impressed by the quality of their workmanship and the quality of the equipment put in our home.  We had to call once for a concern and Jamie was there the very next morning, remedied the problem and we continue to enjoy our new equipment.  The team is awesome, the service is fast and we couldn’t be happier.” — Tami Y.

“My parents had a man come to their door claiming to be from the gas company. He looked at their furnace and informed them that it had only a few months left. He said he could install a new furnace for them and that they pretty much had no choice. This shocked and scared them. The cost was beyond there budget . They decided to get a second opinion and thank God they did! Along came Dennis to the rescue! He looked at the same furnace and told them some good news! There was nothing wrong with the furnace and probably had many good years left. I have never forgotten that! To know that someone was looking out for my parents’ best interest meant the world to me!! I have used Denoco in my own home, hired them to do all heating and cooling jobs at LAWS where I was in charge of all building maintenance and have highly recommended them to neighbours and friends. Never ever heard a negative word from any of them. Only praise!” — Mel (