End-to-end service
From consultation to maintenance, we handle every step — so you never have to worry about coordinating multiple contractors.
From Alpha to Omega
One Licensed Contractor for Plumbing, Pumps, Aircon, Electrical & Tanks
Stop juggling five vendors. AOT Trinity is PUB-licensed and BCA-registered across every mechanical & electrical trade — one call, one accountable team, commercial to residential.
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Experienced Professionals
Our licensed technicians bring years of hands-on experience in plumbing, electrical, aircon, and water heater systems across Singapore.
Long-Term Support
We don't just fix and forget. AOT provides ongoing maintenance plans and responsive after-service support you can count on.
Facts Google and FM buyers can quote
One UEN. Licensed trades. Code-trained crew.
ALPHA & OMEGA TRINITY PTE. LTD. (UEN 201215586K) is a PUB-licensed plumbing contractor (Lam Kien Choon WS16882018), BCA CRS Grade L1 for ME01, ME06 and ME12 to 1 Sep 2028. bizSAFE Level 3 (E18947) to 27 Jul 2029. Operations: 32 Old Toh Tuck Road, I. Biz Centre #03-11, Singapore 597658. Email [email protected] · WhatsApp +65 8151 8857.
About Us
We're with You All The Way
At AOT, we don’t just install water heaters — we build long-term relationships based on trust, reliability, and service that lasts. From the first consultation to professional installation and years of aftercare, we’re with you every step of the way.
Learn More9+
Years of Experience
5000+
Projects Completed
3000+
Happy Customers
Reliable Hot Water. Professional Installation. Long-Term Support.
Storage Water Heater
Reliable, Safe and Built to Last
A storage water heater heats and stores hot water in an insulated tank — consistent pressure, stable temperature, ready whenever you need it.
We install and maintain electric storage water heaters for HDBs, condos, landed homes and commercial units across Singapore.
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More Than Just Water Heaters
Multi-Trade Services You Can Rely On
AOT also offers expert plumbing, pump systems, pressure vessels, air conditioning maintenance, and general upkeep — all delivered with the same reliability we’re known for.
Industries We Serve
Trusted Solutions Across Residential, Commercial, and Industrial Spaces
Reliable water heater installation, plumbing and maintenance tailored to homes, offices and facilities across Singapore.
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Residential
Commercial
Industrial
Healthcare
Our Projects & Portfolio
Trusted Work. Proven Results.
From residential flats to commercial buildings, our work speaks for itself across Singapore.
What Our Customers Say
Real Experiences. Long-Term Trust.
Homeowners, landlords and property managers across Singapore work with AOT for licensed, accountable M&E work.
Get a Quote“AOT did a fantastic job installing our storage water heater. The technician was punctual, explained everything clearly, and even gave maintenance tips.”
Ready to Get Started?
Let’s install it right — from the beginning.
Whether you're upgrading a water heater, planning a new install, or need reliable maintenance, AOT is here to help.
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