Storage tank water heater installation in Kuala Lumpur or Selangor starts from RM 420, including secure wall mounting, a pressure relief valve, SIRIM-compliant pipework, and connection to multiple water points. KL Servis Rumah supplies and installs 15L–50L units from brands such as Rheem, Rinnai, Joven and Mitsubishi Electric.
A storage heater is the right choice when more than one bathroom — or a bathroom plus kitchen — needs hot water. This guide explains how storage heaters work, what installation involves, and how to keep the tank lasting longer.
How a Storage Tank Heater Works
A storage heater is an insulated tank (usually 15L, 25L, 30L, 40L or 50L) that heats water to a set temperature and stores it, feeding several outlets. When a tap opens, the stored hot water is pushed out and cold water refills the tank, triggering the element to reheat.
Advantages
- Hot water at multiple points — two bathrooms, or bathroom and kitchen.
- Steadier temperature than an instant heater.
- Runs at a lower electrical load, which suits homes with limited electrical capacity.
- Can be positioned in a bathroom, storeroom, or kitchen cabinet (space permitting).
Limitations
- Limited volume — after heavy use the tank needs time to reheat.
- Takes up wall or floor space; a full 50L tank is heavy and needs a solid wall.
- Slightly higher standby heat loss (modern units use better insulation).
If you only need hot water in one shower, an instant heater is cheaper and smaller.
What Installation Includes
A professional storage heater installation covers:
- Sizing & positioning — we confirm the tank size to match your usage, and a position with solid wall support (concrete or brick). For floor-standing units, the base must be level and able to take the full weight.
- Wall mounting — the tank is secured with appropriate anchors. A full 50L tank weighs roughly 60kg–70kg when full, so mounting is not a job for DIY hooks.
- Pressure relief valve — fitted to release excess pressure and protect the tank.
- Pipework — SIRIM-compliant piping connects the tank to the required outlets, with isolation valves so the tank can be serviced without draining the whole system.
- Electrical connection — a dedicated circuit with isolator and RCCB protection, installed by ST-registered wiremen.
- Testing — the tank is filled, checked for leaks, and the temperature settings and safety devices are verified.
Choosing the Right Tank Size
| Household | Recommended size |
|---|---|
| 1–2 people, one bathroom | 15L–25L |
| 3–4 people, one bathroom + kitchen | 30L–40L |
| 4+ people, two bathrooms | 40L–50L |
Remember that a tank serves stored water first — if two people shower back-to-back, allow reheat time between uses. For families with high hot-water demand, ask us about heat-pump systems, which heat water more efficiently over time.
Maintenance That Extends Tank Life
- Check the anode rod — the sacrificial anode inside the tank protects it from corrosion. On Malaysian water, it should be inspected every 1–2 years and replaced when worn.
- Descaling — hard water areas (parts of Klang, Shah Alam and KL) build scale that slows heating. Descaling restores performance.
- Test the pressure relief valve — lift the lever occasionally to confirm it releases and reseats.
- Watch for leaks — water around the tank or a continuously running refill usually means a failing valve or a corroded tank.
If your existing heater has stopped heating, our water heater repair guide explains the common causes before you decide to replace it.
Frequently Asked Questions
How much does a storage water heater cost to install in Malaysia?
Installation starts from RM 420 in KL and Selangor, with the tank quoted separately based on brand and size. We can quote supply and installation together.
Where can a storage tank heater be installed?
On a solid wall in a bathroom, storeroom, balcony (weather-protected), or kitchen cabinet area — provided there is clearance for the tank, access for servicing, and a suitable water supply. Our installer will advise on the best position at the site check.
How long does installation take?
A typical storage heater installation takes half a day, including pipework to the outlets. If new plumbing or a new circuit is required, allow more time.
Do storage heaters work during a water supply interruption?
No — they need mains water pressure to feed the tank. They do, however, keep water hot during a brief power interruption until the stored heat is used.
Can a storage heater be installed in a condominium?
Yes, where the management allows and wall space permits. We coordinate approval and work-hour requirements with building management for condominium installations across KL and Selangor.
Book a Storage Tank Heater Installation
KL Servis Rumah supplies and installs storage tank water heaters across Kuala Lumpur and Selangor with secure mounting, SIRIM pipework, ST-licensed wiring, and a 12-month workmanship warranty. WhatsApp us for a quote — message the team.