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Singapore's Trusted
Home
Maintenance Expert

Aircon servicing, plumbing, water heater installation &

electrical repair for HDB, condo & landed homes. Same-day

service across all the Singapore.

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Aircon Servicing
From $25/unit

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Plumbing
From $25

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Water Heater
From $180

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Electrical
From $60

5,000+
JOBS DONE

4.8⭐
GOOGLE RATING

10+
YEARS EXPERIENCES

30 MIN
RESPONSE TIME

Our Services

Complete Home Maintenance Solutions

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

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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

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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

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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

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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

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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

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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.

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PUB & EMA Licensed

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

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30-Min Response

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

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Upfront Pricing

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

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Workmanship Warranty

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

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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

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.

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+65 8151 8857 (WhatsApp)
+65 6816 2462 (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

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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

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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

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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

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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

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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

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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

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