Updated May 2025 — real comparison based on installations across Bali.
In this article I'll walk through the three main water heater options for properties in Bali — electric storage, instant (tankless), and solar — with actual cost figures and honest trade-offs for each. The right choice depends on your property type, your electricity connection, and how long you plan to use the place.
A tank-based electric heater (15L to 100L) is the most common choice in Bali for a reason: it works reliably, spare parts are everywhere, and every technician knows how to service it.
Best for: Villas with 2+ bathrooms, properties where continuous hot water availability matters, landlords who want something tenants can't break easily.
Cost in Bali: Equipment IDR 700,000–3,500,000 depending on brand and size. Installation IDR 1,200,000–1,800,000. Monthly running cost for a 50L unit: roughly IDR 150,000–250,000 in electricity depending on usage.
Real downside: If PLN cuts power (which happens), you lose hot water until the tank reheats — usually 45–90 minutes.
See: Electric water heater installation in Bali →
An instant heater has no tank — it heats water on demand as you turn the tap. The unit is compact (about the size of a small backpack), mounts near the shower, and costs significantly less upfront than a storage heater.
Best for: Single rooms, studio apartments, individual guestrooms in villas, outdoor showers, any situation where one heater serves one point of use.
Cost in Bali: Equipment IDR 350,000–1,200,000. Installation IDR 800,000. Running cost: lower than storage heaters because there's no standby heat loss.
Real downside: Most instant heaters in Bali require 3,500W–4,500W. If your property only has a 2,200VA PLN connection (common in older buildings), you'll need an upgrade first. Also not suitable when multiple bathrooms need hot water simultaneously.
See: Instant water heater installation in Bali →
Bali gets 8–10 hours of direct sun on a clear day. A roof-mounted solar heater uses that to produce free hot water for the vast majority of the year — the electric backup element only kicks in on overcast days.
Best for: Owner-occupied villas, properties with good roof exposure, anyone staying for 2+ years who wants to eliminate the hot water electricity bill.
Cost in Bali: 150L system IDR 7,500,000–9,000,000 installed. 200L system IDR 9,500,000–12,000,000. Payback period: typically 24–40 months depending on current electricity usage. After that, hot water is essentially free.
Real downside: Significant upfront cost. Requires roof access and structural capacity (a full 200L tank weighs ~250kg). Doesn't make sense for short-term rentals or properties with heavy roof shade.
See: Solar water heater installation in Bali →
Ariston and Daalderop are the most reliable brands with good spare parts availability across Bali. Modena is solid for instant heaters. Avoid obscure Chinese brands from Tokopedia — repair parts are impossible to find locally.
For solar: Solahart, Wika and Daalderop all work well in Bali's climate.
If you're unsure what fits your property — message us on WhatsApp. Free advice, no sales pressure.