Our house has had some not so good reviews and more thankfully good ones. These guys were professional plumbing and air con engineers and they knew full well of the difficulty in tracing and finding such issue which has now thankfully been resolved. From our perspective this was latent and we didn't know about it till they advised us BUT they were themselves perplexed by the issue. Anyways thanks to them we did do the fixing after a while searching and the matter is fixed. Leaving a three star review though hurts and we did spend a lot of time with them let them check early and whatever else they wanted.So for review purposes we do feel deflated somewhat.