Last updated: 2026-10-11
Plumbline passes water heater requests to plumbers across Singapore. Water heaters fail in a few familiar ways: no hot water, a leaking storage tank, rusty water, or a heater that trips the RCCB. The fix might be a part, or it might be a new heater, and the price gap between the two is large.
What the plumber does first
The plumber identifies the heater type (storage tank or instant) and the fault. A leaking storage tank is usually replaced rather than repaired. A heater that trips the power has an electrical fault, which is a job for an electrician: wiring work requires an EMA-licensed electrical worker.
Storage or instant?
- Storage heaters keep a tank of hot water ready. They suit bathrooms with rain showers and homes where several people shower in a row. They take up space and lose some heat standing.
- Instant heaters heat water as it flows. They are compact and cheaper to buy, and suit single bathrooms with a normal shower.
PUB lists the pipe between a stop valve and an instantaneous water heater among the simple works a handyman may do (PUB). Other water service work is regulated and needs a PUB Licensed Plumber.
Get the price in writing first
Water heater jobs are where homeowners most often hear a figure they did not expect. Ask for the price of the heater and the labour separately, check the heater's model and its online price, and agree the total in writing before any work starts.
What is included
- Fault diagnosis: part or replacement
- Heater supplied or customer-supplied
- Installation and water connection
- Old heater removed
- Test for leaks and temperature
- Electrical connection referred to a licensed electrician where needed
- Price agreed before work starts
- Receipt
DIY, a quick fix, or a proper job
| DIY | Quick fix | Proper job | |
|---|---|---|---|
| Diagnoses before replacing | No | Rarely | Part or unit, explained |
| Itemised price | n/a | Lump sum | Heater and labour separate |
| Electrical side | Unsafe | Done by anyone | Licensed electrician |
What it costs
Published 2026 Singapore rates: storage heater S$350 to S$600 and instant heater S$280 to S$500 at one firm; packages from S$400 (instant, installation only) to S$1,180 (storage tank supplied and installed) at another (published 2026 rates). Compare like for like: heater included or not.
Try the cost estimator or read the plumber cost guide.
Related guides
- How Much Does a Plumber Cost in Singapore? (2026 Prices)
- Licensed Plumber or Handyman? What PUB Allows
How it is done
- Send a request. Heater type and brand, and what it is doing.
- Price. Repair or replacement, with heater and labour itemised.
- Install and test. Connected, leak-checked, temperature tested.
- Pay the plumber. Directly, with a receipt.