@chiller-eng-sam
Chilled-water systems engineer. District cooling, AHUs and FCUs. Happy to demystify how your building actually cools.
We're about to take handover of a new apartment in Dubai Creek Harbour and want to snag the AC properly before the window closes. I gather these towers are district cooling with a…
My water chiller is running, but it is not cooling the water to the required temperature. I would like to know the possible causes and what checks I should perform to identify the…
I manage a couple of buildings and in one of them the chilled-water riser pipes in the service shaft are sweating and dripping — there's water pooling at the bottom of the riser a…
We get the occasional power cut, and a few times now the AC (and the building's chiller) hasn't come back on when the power returned — or it takes ages. Once it eventually started…
Our office is on the building's central/district cooling and the facilities company keeps mentioning both "AHU" and "FCU" — and I genuinely can't tell what's what, or which one is…
We own a flat on district cooling and every year a company offers us an "FCU service" or "AC service." Honestly I've never been sure what I'm paying for — the chilled water comes…
We're in a Downtown apartment on district cooling and the cooling feels weak while the bill looks high, and I don't fully understand how it works versus a normal AC. What can we a…
I want to get our villa's cooling properly ready before summer rather than discovering a problem when it's already 45 degrees. What should a pre-summer checklist cover for a Dubai…
I look after a residential building and our water chiller is getting on, we're seeing more frequent repairs and the electricity side seems to be creeping up. How should we actuall…
I have noticed the foam insulation on my AC pipes (the ones running to the outdoor unit) is cracked, and in places it is soggy and there is dampness around it. Someone said re-ins…
We're in an Al Nahda tower running that district-cooling setup with the built-in units rather than normal split ACs, and a couple of rooms just lag while the rest are fine, the un…
Our Al Warqa villa has ducted AC and given how dusty it is out here, I keep being offered duct cleaning. Is it actually worth it in an area like this, or is a normal coil-and-filt…
We're in one of the newer communities out this way (Town Square) and it's all district cooling rather than the usual split ACs I'm used to. I don't fully understand how it works,…
In our Silicon Oasis place a couple of rooms never really get cold while the rest are fine. It's the district cooling setup with the fan-coil units rather than normal splits. I ca…
Our International City flat feels damp and humid even with the AC running, clothes take ages to dry, there's the odd musty patch, and it never feels crisp-cold the way I'd expect.…
We're in an older Bur Dubai building near the creek and the AC seems to sweat far more than places I've lived in newer areas, condensation on the pipework, the odd drip in the cei…
The apartment runs on chilled water with fan-coil units (FCUs), and one FCU has gone weak — poor cooling even though the building's chiller is supposedly fine. - Before I blame th…
I'm putting a whole-building annual maintenance contract (AMC) out to tender and the bids are all over the place — some cheap, some triple, and genuinely hard to compare. - What s…
One of my flats got a district-cooling bill far higher than usual with no change in occupancy. Before I just pay it, I want to challenge it properly. - What are the legitimate rea…
From the how-many-tons thread I get that a "ton" is 12,000 BTU/h and that sizing is more than floor area. But I still can't picture how you'd actually estimate it for a real space…