Ariston vs Joven vs Rheem vs 707: Best Water Heater Brands in Singapore Compared

There is no single best water heater brand in Singapore, since the right choice depends on your bathroom type, whether you want instant or storage hot water, and your budget. For most HDB flats, Joven and 707 offer strong value on both instant and storage units, Ariston is the popular mid-to-premium storage choice with good reliability, and Rheem is the trusted long-life storage option that costs a bit more upfront. Match the heater type to your home first, then pick the brand within that category.

All four brands are widely sold and serviced here, so parts and repair support are rarely a problem. The bigger decision is instant versus storage, tank size, and whether you need a multipoint unit to feed more than one outlet. Below is an honest, Singapore-specific comparison to help you choose.

What is the difference between instant and storage water heaters?

An instant water heater heats water on demand as it flows through the unit, so it never runs out but delivers a lower flow rate and usually serves one shower point. A storage water heater keeps a tank of water hot, so it gives stronger, steadier flow and can feed a rain shower or multiple taps, but the tank can run low during long or back-to-back showers.

In Singapore, instant heaters are common in HDB bathrooms and smaller condos, while storage heaters are favoured where people want a rain shower, a bathtub, or hot water at more than one point.

• Instant: compact, cheaper to buy, endless hot water, lower flow, one outlet
• Storage: stronger flow, feeds rain showers and tubs, tank can deplete, needs wall space
• Multipoint storage: one tank feeds kitchen plus bathroom, but check pipe runs

How do Ariston, Joven, Rheem and 707 compare?

Each brand has its own reputation among Singapore homeowners and installers. The summary below reflects how they are generally positioned locally, not a lab test, so treat it as a guide rather than a ranking.

Prices move with promotions and model, so use these as rough retail ranges for the unit only, before installation.

• Joven: Malaysian brand, very popular and budget-friendly. Instant units often around SGD 150 to 300, storage tanks around SGD 250 to 500. Good value, wide availability.
• 707: Long-established local-market brand, strong on storage and multipoint tanks. Storage units roughly SGD 250 to 550. Known for solid, no-frills tanks.
• Ariston: Italian brand, mid to premium. Storage tanks commonly SGD 300 to 700 plus depending on size and features. Well regarded for reliability and finish.
• Rheem: American brand, premium storage and long tank lifespan. Units often SGD 400 to 900 plus. Higher upfront cost, trusted for durability.

Which water heater brand is best for an HDB flat?

For a typical HDB bathroom with a single shower point, an instant heater from Joven or 707 is a sensible, wallet-friendly pick, and Ariston instant models suit those who want a slightly more premium unit. If you have a rain shower or want stronger flow, a storage tank of around 15 to 30 litres from any of the four brands will serve one bathroom comfortably.

Wall space and electrical supply matter too. Instant heaters usually need a dedicated higher-rated power point and a residual current device, so if your bathroom is not already wired for it, factor that into the cost.

How long do these water heaters last and what warranty do they give?

A well-installed water heater in Singapore typically lasts around 8 to 15 years, with storage tanks often outliving instant units when maintained. Hard scale is less of an issue here than in some countries, but heating elements and thermostats still wear out over time.

Warranties vary by brand and by part, so always check the specific model. As a general pattern, many storage tanks carry a longer warranty on the inner tank than on electrical parts.

• Inner tank (storage): commonly 5 to 10 years depending on brand and model
• Heating element and electrical parts: often 1 to 2 years
• Instant heater body: typically 1 to 5 years by brand
• Always confirm the warranty card and register the product if required

How much does installation cost and can I do it myself?

Installation is usually charged separately from the heater. For a straightforward like-for-like swap, labour often runs around SGD 80 to 200, while a new install that needs fresh piping, a dedicated power point, or an isolator switch can cost more. Any electrical work should be done by a competent person, and heaters must be earthed and protected by a residual current device.

Replacing a heater is not a safe DIY job because it combines water and mains electricity. Getting a licensed plumber or electrician to handle the water heater installation means the unit is mounted securely, wired correctly, and pressure-tested, which also protects your warranty. If you want it done right the first time, our team can supply and fit any of these brands and sort out the plumbing and electrical side together.

How do I choose the right size and type for my home?

Start with how many outlets need hot water at once and what kind of shower you have. One person with a single handheld shower is well served by an instant heater or a small storage tank, while a family, a rain shower, or a bathtub points you toward a larger storage or multipoint unit.

Then match brand to budget: Joven and 707 for best value, Ariston for a balanced mid-range, and Rheem when you want maximum longevity and are happy to pay more upfront.

• Single shower point, tight budget: instant heater (Joven, 707, or Ariston)
• Rain shower or bathtub, one bathroom: 15 to 30L storage tank
• Hot water at kitchen and bathroom: multipoint storage tank, check pipe layout
• Priority on long lifespan: premium storage (Rheem or higher-end Ariston)

Frequently asked questions

Which is the cheapest reliable water heater brand in Singapore? Joven is usually the most budget-friendly of the four while still being widely serviced, and 707 is a close second for storage tanks. Both offer good value for standard HDB and condo bathrooms.

Is an instant or storage water heater better for a rain shower? A storage heater is better for a rain shower because it delivers stronger, steadier flow, which most instant heaters cannot match. Choose a tank of at least 15 to 30 litres so it does not run cold mid-shower.

Do I need an electrician or a plumber to install a water heater? You generally need both skills, since the job involves water connections and a properly earthed, RCD-protected power supply. Many contractors, including us, cover the plumbing and electrical work together so you deal with one team.

How often should a water heater be serviced? A quick check every year or two is sensible, mainly to inspect the element, thermostat, safety valve, and any signs of leaking or corrosion. Servicing before problems appear helps the unit reach its full lifespan and keeps it safe.