24-Hour Plumber & M&E Contractor Singapore | Alpha Omega Trinity

Our Services

Complete Home Maintenance Solutions

Completed plumbing repair under bathroom sink in Singapore

Plumbing Services

PUB-licensed plumber for all residential plumbing needs — HDB, condo & landed.

From $50

✓ Pipe leak repair & replacement

✓ Choked / clogged drain clearing

✓ Toilet bowl repair & installation

✓ Tap & mixer replacement

Water Heater Installation

Expert installation & replacement of instant and storage water heaters.

From $180

✓ Instant water heater install

✓ Storage water heater install

✓ Heater replacement & disposal

✓ Piping & wiring works

Aircon Servicing & Repair

Complete aircon maintenance for all brands — Daikin, Mitsubishi, Panasonic, LG & more.

From $25/unit

✓ General servicing & cleaning

✓ Chemical wash & overhaul

✓ Gas top-up (R22, R32, R410A)

✓ Aircon installation & replacement

From aircon servicing to plumbing emergencies - we handle everything so you don't have to.

Electrical Services

Licensed electrician for all residential electrical work — safe & up to code.

From $60

✓ Power point installation

✓ DB box / circuit breaker repair

✓ Ceiling fan installation

✓ Lighting & wiring

✓ Electrical troubleshooting

✓ EMA certified technicians

Completed pump repair with pipes and valves in Singapore

Pump Services

Booster pump, transfer pump & submersible pump installation and servicing.

From $120

✓ Booster pump installation

✓ Transfer pump servicing

✓ Submersible pump works

✓ Pressure switch replacement

✓ All brands serviced

✓ Emergency repair available

Large commercial water tank after servicing in Singapore

Water Tank Services

Water tank cleaning, repair & installation for commercial and residential properties.

Call for Quote

✓ Tank cleaning & disinfection

✓ Tank repair & replacement

✓ Float valve replacement

✓ Level sensor installation

✓ PUB compliance inspection

✓ Scheduled maintenance plans

Transparent Pricing

No Hidden Charges - What You See Is What you Pay

All price include labour. GST applies where applicable. Final price confirmed before work begins.

Services	Description	Price (from)
Instant Water Heater Install	Installation labour only (heater not included).	$180
Plumber — Toilet Repair	Flush system, cistern & bowl repairs.	$60
Plumber — Pipe Leak Repair	Fix leaking pipes, joints & connections.	$80
Tap / Mixer Replacement	Replace kitchen or bathroom tap.	$50 + parts
Plumber — Choked Drain	Clearing of choked drain or pipe.	$60
Aircon Gas Top-Up	R410A / R32 / R22 refrigerant refill.	$80/unit
Aircon Chemical Overhaul	Full dismantle, clean & reassemble. Per unit.	$150/unit
Aircon Chemical Wash	Deep chemical cleaning. Per unit.	$80/unit
Aircon General Servicing	Clean filters, coils, drain pan. Per unit.	$25/unit

Why Choose Us

Why 5,000+ Singapore Homeowners Trust AOT Trinity

We're not just another handyman service — we're licensed professionals who treat your home like our own.

PUB & EMA Licensed

All technicians are properly licensed and certified. Your safety is non-negotiable.

30-Min Response

WhatsApp us and get a reply within 30 minutes. We respect your time.

Upfront Pricing

No hidden charges, no surprise fees. We quote before we start — always.

Workmanship Warranty

30–90 day warranty on all work. If something's wrong, we come back free.

Island-Wide Coverage

From Jurong to Pasir Ris, Woodlands to Sentosa — we cover all of Singapore.

Customer Reviews

What Our Customers Say

Don't just take our word for it — hear from homeowners who've experienced our service.

★★★★★

"Aircon not cold for weeks. Called AOT and they came same day. Chemical wash all 4 units — now blowing ice cold! Very professional team. Price also reasonable."

LT

Lim Teck Hong

4-room HDB, Tampines

★★★★★

"Emergency pipe burst at 9 pm. WhatsApp AOT and they send plumber within 1 hour. Fixed the leak quickly and even helped clean up. Lifesaver! Will recommend to everyone."

Sarah Abdullah

Condo, Bishan

SA

★★★★★

"Installed new Ariston storage heater for my BTO. Quoted $380 all-in, no hidden charges. Technician very neat — even wore shoe covers inside my house. A+ service!"

Rajesh Kumar

BTO 5-room, Punggol

RK

★★★★★

"DB box tripped and whole house no power. Called AOT at 7am, electrician came by 9am. Found the faulty MCB, replaced it on the spot. Very experienced and explains clearly."

WL

Chen Wei Lin

3-room HDB, Ang Mo Kio

★★★★★

"Engaged AOT for annual aircon servicing contract — 4 times a year for all 5 units. Very punctual, always on time. My aircon never give problem since I started using them."

Nurul Fatin

Executive Maisonette, Woodlands

NF

★★★★★

"Kitchen sink keep blocking. Other company say must hack the wall — very expensive. AOT used CCTV snake to find the blockage and clear it without hacking. Saved me thousands!"

Tan Kah Seng

5-room HDB, Bedok

KS

Service Areas

We Cover All of Singapore

No area too far - our technicians are deployed island-wide for fastest reponse.

Need Help? Get a Free Quote in 30 Minutes

Tell us what you need and our team will respond via WhatsApp within 30 minutes — no obligation, no hard-sell. Just honest advice from licensed professionals.

+65 8151 8857 (WhatsApp)
+65 8151 8857 (Office)
aotrinitysg@gmail.com / kclam999@yahoo.com.sg

Request a Free Quote
Fill in the form and we'll WhatsApp you back within 30 minutes.

FAQ

Frequently Asked Question

Got question? We've got answers, Click any question to expand.

How much does aircon servicing cost in Singapore?

Do you provide same-day plumbing service?

How much does water heater installation cost?

Are you electricians PUB / EMA licensed?

What areas in Singapore do you serve?

Do you offer warranty on your work?

Can I get quote before committing?

EXPERT TIPS

Home Maintenance Blog

Practical tips from our licensed technicians to help you maintain your Singapore home.

AIRCON

AIRCON SERVICING

How Often Should You Service Your Aircon in Singapore? (2026 Guide)

Singapore's hot and humid climate means your aircon works overtime. Learn the ideal servicing frequency to keep your units running efficiently and avoid costly repairs...

19 June 2026

7 min read

PLUMBING

PLUMBING SERVICES

5 Common Plumbing Problems in HDB Flats (And How to Fix Them)

Living in an HDB flat? These are the top 5 plumbing issues we see every week — and when you should call a licensed plumber vs DIY...

10 June 2026

5 min read

WATER HEATER

Instant vs Storage Water Heater: Which Is Better for Your Singapore Home?

Choosing the right water heater for your HDB or condo? Here's an honest comparison of instant vs storage heaters — cost, safety, efficiency and installation...

25 May 2026

5 min read

ELECTRICAL

ELECTRICAL SERVICES

DB Box Tripped? Here's What to Do (And When to Call an Electrician)

Your circuit breaker tripped and the whole house has no power. Don't panic — here's a step-by-step guide on what to check before calling an electrician...

18 May 2026

4 min read

GENERAL

GENERAL TIPS

Ultimate HDB Home Maintenance Checklist: What to Service Every Year

Keep your HDB in tip-top condition with this annual maintenance checklist — from aircon to plumbing, electrical to painting...

10 May 2026

7 min read

ELECTRICAL

ELECTRICAL TIPS

How to Reduce Your SP Utilities Bill: 7 Tips From Our Electricians

Your electricity bill too high? Our licensed electricians share 7 practical tips that can cut your SP bill by 20–30% without sacrificing comfort...

2 May 2026

4 min read