18 Years Cooling Singapore, One Honest Quote At A Time.
Founder-led, Jurong-born, 10,000+ units serviced. Here is the team, the story, and the reason the van still pulls up on Boon Lay every morning.
It Started With One Van In Jurong West.
In 2005, Mr Chong drove a single van out of Block 540 Jurong West Avenue 1 and started servicing aircons for neighbours who were tired of opaque quotes from bigger contractors.
Eighteen years later, we still run out of the same block. The van count grew, the team grew, the brands we service grew — but the thing that never changed is the idea behind it: quote the job honestly, do it cleanly, stand behind it for 90 days.
We have serviced over 10,000 fan coil units across Singapore — from 1980s HDB flats in Boon Lay to new Tengah BTOs, from Bishan condos to Clementi retail shops. No job too small, no quote too vague.
Four Values, Zero Exceptions
Every technician on our team agrees to these before they step into a customer's home.
Plain English Over Jargon
We explain what's wrong in words you actually use. No raw "PCB failure" without also saying "printed circuit board — the brain of the unit".
Price Before Work
Every job starts with a written quote. If we find something extra on-site, we stop and ask — no surprise charges on the final bill.
Respect Your Home
Shoe covers, drop cloths, vacuumed drainage trays. Our technicians treat your HDB or condo the way they would treat their own mother's place.
Back What We Do
90-day workmanship warranty on every visit. If the same fault returns, we come back free — no "normal wear" excuses.
18 Years In Five Milestones
Founded in Jurong West
Mr Chong starts Coolbest from a one-man van, servicing HDB blocks in Boon Lay and Jurong West.
Full Chemical Overhaul Added
Coolbest becomes one of the first Jurong-based teams to offer full-dismantle chemical overhauls for ageing HDB systems.
Inverter & R32 Specialist
Trained on the first wave of Daikin and Mitsubishi inverter systems and R32 refrigerant handling.
Digital Booking Launch
WhatsApp booking system launched — most customers now confirm a slot in under a minute.
10,000+ Units, 4.8★ Rated
18+ years on, still Jurong-based, still founder-led, still serving the same streets that started it all.
What Customers Say About The Team
4.8 average across 200+ Google reviews. Real feedback from Jurong, Bishan, Boon Lay and beyond.
"Called Coolbest on Saturday morning because our bedroom AC was leaking onto the floor. Uncle came within three hours, found the drainage was clogged, cleaned it out and explained exactly what had happened. Paid S$70, no upsell. Will definitely book again."
"Got all three units chemical washed before moving out of our condo in Bishan. They brought the Certificate of Service and our landlord released the full deposit without any fuss. Photos before and after made the difference."
"Installed a new Mitsubishi Starmex system for our HDB in Boon Lay. Mr Chong himself came to do the site survey, sized it right, and the team installed in one day. No leaks, no noise, running perfect six months in."
Meet The Team On Your Next Service.
WhatsApp +65 9182 5233 — or stop by our office at Block 540 #03-1108 Jurong West Avenue 1.