Do not use Tech-V Air Cool Engineering. Their technicians damaged the evaporators my newly installed aircons. Below is the full story:
In Jan 2017, I engaged a reputable air-con contractor to install a new set of Mitsubishi split air-conditioners for my living room and two bedrooms. In addition, I have an existing air-con maintenance contract with Tech-V Air Cool Engineering to service the air-cons on a quarterly frequency.
I have been using Tech-V for a few years already and because each maintenance team has different level of skills and work attitude, my overall satisfaction have ranged from highly satisfied to highly dissatisfied.
On 17 March 2017, a team came to service the air-con. About a month later, I wanted to remove the filtering nets of the indoor units for routine cleaning and was shocked to see that some parts of the evaporator coils were dented. That happened in all the three indoor units (see pictures attached).
And again after another team came to service the air-cons on 6 July 2017, there were new dents on other parts of the evaporator coils. Now I understand why all the evaporator coils were badly dented in my old air-cons which were serviced by Tech-V.
On 25 Oct 2017, when I feedback to the technicians who came over for routine servicing, they say damage caused by vacuum cleaning is "inevitable". However, I find such a lame explanation unacceptable. When I ask them what if those were their very own aircons, would they accept the explanation? They were silent.
When I provide the feedback (with the attached pictures) to the Customer Service, the general attitude was defensiveness, not empathy. I requested to speak with the boss or GM, but they say they will escalate it to their management. To-date I am still waiting for a response.
I will not renew the contract with Tech-V again when it expires if I am not assured that they will not be causing further damage to the aircons.