The best tankless water heaters 2026
We compare real gas tankless water heaters and instant electric heaters from MercadoLibre Argentina by flow, draft type and ignition, to pick the ideal one for your home.
Prices verified on July 24, 2026 · How we do it
How we chose: We analyzed 13 real products on the market · MercadoLibre Argentina
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Quick verdict
Choose by flow (liters per minute) based on how many taps you use at once, and by your home's gas type. For most people the Escorial 15L is the most balanced buy; if you want the safest option for enclosed spaces, a forced-draft unit like the Philco; and if you have no gas, an instant electric heater like the Oryx.
What to look for before buying
- Tankless heater or storage tank — The tankless heater warms water instantly as it flows: it never runs out of hot water, but the flow is limited (it can't keep up with several taps at once). The storage tank stores hot water in a tank: it gives a lot of flow at once, but if you empty it you wait for it to recover. If you're few and don't open several taps together, the tankless; if you're many, also see our storage-heaters guide.
- Flow (liters per minute) — It's the key figure for a tankless heater: how many liters of hot water it delivers per minute. More liters = you can use more taps at once (shower + kitchen). As a reference, 12-14 L/min is enough for a family; for one or two people with a single shower, less also works.
- Gas type (natural or LPG/bottle) — It must match your home's gas: natural (mains) or bottled (LPG). Some come for one or the other, and others are multigas or convertible. Buying the wrong one for your installation is the most expensive mistake; always check it first.
- Draft type (natural, forced or electric) — Natural draft vents the gases up through a flue (needs good ventilation). Forced/balanced draft is safer for enclosed spaces because it draws and expels air from outside: mandatory in bathrooms and small spaces by code. The electric one doesn't burn gas, so it doesn't have that issue, but uses a lot of electricity.
- Ignition and safety — Automatic ignition (hydro-generator or battery) lights on its own when you open the tap, with no always-on pilot (saves gas). Look for a safety valve and a sensor that cuts the gas if the flame goes out. On electric ones, overheat protection and proper electrical wiring.
Our recommendations
Escorial CE-15L Smart 15L Tankless Water Heater
Escorial is a reference brand, and 15 L/min is good flow for a family (it allows more than one tap). The most rounded balance of brand, flow and price, on discount.
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Oryx 8.8L Instant Electric Water Heater
It uses no gas: it heats water instantly with electricity, ideal if you have no gas connection or for a single point. The most affordable option, though it uses a fair bit of power in use.
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Philco 14 L/min Forced-Draft Tankless Water Heater
Forced draft: it draws and expels air from outside, the safest for bathrooms and enclosed spaces (and what code requires). 14 L/min of flow and brand backing: the premium pick.
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Señorial 14 L/min LPG (Bottled Gas) Tankless Water Heater
Set up for liquefied gas (bottle/LPG), the alternative for homes without mains natural gas. 14 L/min of flow and a steep discount: the option for those on bottled gas.
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Side-by-side comparison
| Product | Price | Installments | Rating | Where |
|---|---|---|---|---|
| Escorial CE-15L Smart 15L Tankless Water Heater | $ 368.599 | 12 | — | MercadoLibre |
| Oryx 8.8L Instant Electric Water Heater | $ 299.989 | 12 | — | MercadoLibre |
| Philco 14 L/min Forced-Draft Tankless Water Heater | $ 320.000 | 12 | — | MercadoLibre |
| Señorial 14 L/min LPG (Bottled Gas) Tankless Water Heater | $ 350.000 | 12 | — | MercadoLibre |
A tankless water heater warms water instantly, without storing it: it never runs out of hot water, unlike a storage tank. The decision comes down to the flow (liters per minute, by how many taps you use at once), your home’s gas type and the draft type (key for safety). We compared the best-sellers on MercadoLibre Argentina.
What to look for
- Flow: 12-14 L/min for a family; less is enough for 1-2 people and one shower.
- Gas type: it must match your installation (mains natural or bottled/LPG).
- Draft type: forced/balanced is the safest (mandatory in bathrooms and enclosed spaces); electric doesn’t burn gas but uses a lot of power.
- Ignition and safety: automatic (no always-on pilot) and with a cutoff valve.
Our pick
Choose by flow and by your home’s gas. For most people, the Escorial 15L is the most balanced buy. If the heater goes in a bathroom or enclosed space, prioritize a forced-draft unit like the Philco; and if you have no gas, an instant electric heater like the Oryx.
Gas installation must be done by a licensed gas fitter. Prices come from MercadoLibre Argentina and update daily; the link always takes you to the current offer.
Frequently asked
Tankless heater or storage tank? Which suits me?
It depends on how many you are and how you use water. The tankless heater warms instantly as water flows, so it never 'runs out', but delivers a limited flow: if you open the shower and the kitchen at once, it may not keep up. The storage tank keeps hot water in a tank: it gives a lot of flow at once, ideal for several taps or back-to-back showers, but when you empty it you wait to recover. For one or two people with a shower, the tankless is more practical and doesn't waste keeping water hot; for large families, the storage tank is usually better.
What is forced draft and why does it matter?
The 'draft' is how the heater vents the combustion gases. In natural draft, they exit up a flue by temperature difference, and the unit takes air from the room: it requires very good ventilation. Forced (or balanced) draft uses a fan and a dual duct that draws and expels air directly from outside, without using room air: it's much safer and, by code, it's what's required in bathrooms and enclosed spaces. If the heater goes in a poorly ventilated spot, forced draft is not optional.
Do I need a professional to install it?
Yes. A gas water heater must be installed by a licensed gas fitter: they connect the gas, check the exhaust venting (the draft) and leave everything safe and to code. It's not a DIY install: a gas leak or bad venting is dangerous (carbon monoxide). Instant electric heaters, on the other hand, don't use gas, but consume a lot of electricity and need adequate wiring, so an electrician is advisable too.
Are prices and stock up to date?
Yes: we take real price and availability from MercadoLibre Argentina and refresh them daily. They can change at any time; the link always takes you to the current offer.
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