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The 5 best instantaneous water heaters for the pool 2024?

by Tim

instantaneous water heater pool header
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If you fancy a dip but don’t like the cold pool water, you can remedy the situation. With an instantaneous water heater for the pool, the water is simply set to the desired temperature. Instantaneous water heaters are particularly suitable for small pools or for pools that are only to be heated occasionally. They are less powerful than heat pumps, but considerably cheaper to purchase.

These pool instantaneous water heaters are recommended:

We present the most popular instantaneous water heaters 2024 in our recommendations. Important information for a successful purchase is summarized in our Checklist. The right model is guaranteed to be found quickly.

Contents:

  1. Top picks: The best instantaneous water heaters for the pool 2024 reviewed.
  2. Checklist: These features are important in the test.
  3. Bestsellers: Overview of the most popular instantaneous water heaters for the pool.
  4. FAQ: Frequently asked questions and answers about instantaneous pool heaters.

The best instantaneous water heaters for the pool 2024 reviewed

How do we rate? Our experts thoroughly research and evaluate each recommendation. We take into account the most important product features, adherence to quality standards, prices, customer reviews, our own experiences, and much more. Learn more about our process.

1. best instantaneous water heater for pools up to 25 cubic meters

No product found.

What we like:

  • Simple installation
  • Good quality
  • Energy efficient
What we don’t like:

  • Only sufficient for smaller pools

Why we like it: The instantaneous water heater has a safety and control thermostat with which temperatures between 0 and 45° C can be set. The controls are still analog, which makes adjustment particularly straightforward.

Recommended for: This instantaneous water heater heats pools that hold up to 25 cubic meters of water. This makes it easy to heat small and medium-sized pools.

2. best instantaneous water heater for above ground pools

Simple assembly
Intex - Pool heater - Ø 25 x 45 cm*

    This instantaneous water heater from Intex is supplied with a hose, fastening material and a user manual. It has an output of 3000 W and a fault protection switch with IP25. It measures 45 x 25 cm and weighs around 3.6 kilograms.

    What we like:

    • Simple installation
    • Fair price
    What we don’t like:

    • Heats quite slowly
    • High power consumption

    Why we like it: This heater brings the pool water to a temperature of up to 35° C. Both the installation and the use of the instantaneous water heater are very simple. The heater has an integrated flow sensor.

    Recommended for: This pool heater from Intex is suitable for heating round Easy Set and plastic frame pools with a diameter of up to 457 cm.

    3. best instantaneous water heater with soft-touch control panel

    No product found.

    What we like:

    • Quiet
    • Price
    • Solid workmanship
    What we don’t like:

    • High power consumption
    • Cannot be operated with a timer
    • No temperature display

    Why we like it: This Bestway instantaneous water heater is able to heat pool water up to 40 degrees. It achieves a water temperature change of 0.5 – 1.5° C per hour. The desired temperature can be set digitally using a soft-touch control.

    Recommended for: This pool heater is suitable for pools with a water volume of 1,520 – 17,035 liters and filter pumps up to 3758 l/h.

    4. best instantaneous water heater for the pool up to 40 degrees

    No product found.

    What we like:

    • Sufficient power for small pools
    • Overheating protection
    • Price-performance ratio
    What we don’t like:

    • Operating instructions rather poor

    Why we like it: This instantaneous water heater has a temperature preselector that can be used to set the desired water temperature. This is maintained by the heater, which guarantees a constant temperature during bathing. It also has overheating protection and therefore only heats when the water is running.

    Recommended for: This heater is suitable for heating small pools such as hot tubs and maintaining a constant water temperature.

    5. best instantaneous water heater with particularly high output

    No product found.

    What we like:

    • High performance
    • Quiet
    • Durable
    What we don’t like:

    • Price

    Why we like it: This heater is particularly quiet, even at full power, so it won’t disturb you in the bath. To set the correct temperature, simply select a value between 0 and 45° C on the analog controller. The maximum temperature that can be reached is 60° C.

    Recommended for: This instantaneous water heater is suitable for pools with a water content of up to approx. 45m³. However, it must not be used in saltwater pools.

    Instantaneous water heater for the pool Checklist: These features are important in the test

    • Pool size: Instantaneous water heaters are primarily suitable for pools smaller than 20 cubic meters. For larger pools, the heating capacity is lower and a heat pump makes more sense. Nevertheless, there are a few instantaneous water heaters with a higher output that are also suitable for larger pools.
    • Heating temperature: When purchasing instantaneous water heaters, attention should be paid to the maximum heating temperature. Most models manage to heat the pool to 35 to 40 degrees. On some models, a temperature can be set which is then maintained by the heater.
    • Power supply: Instantaneous water heaters must be connected to a power supply in order to heat the pool. This should be taken into account, especially for above-ground pools in the garden, and an extension cable or connection should be installed if necessary.
    • Hose diameter: Hoses with a diameter of 30 to 32 mm are usually used for pools. When purchasing an instantaneous water heater, make sure that the pool pump hoses fit.

    Also interesting: The best solar pool heaters 2024.

    Bestsellers: The most popular instantaneous water heaters for the pool

    What do others buy? In our bestseller list, we present the TOP 11 most purchased offers. The selection is updated daily.

    (**Last update 2024-12-03)

    FAQ: Frequently asked questions and answers

    instantaneous water heater pool-faq

    Who is allowed to connect instantaneous water heaters?

    Instantaneous water heaters can be installed by yourself or connected by an electrician.

    Which instantaneous water heater is the best?

    Which instantaneous water heater is the best depends on what you want it to do. Our Checklist summarizes the most important points that should be taken into account. Our recommendations show popular instantaneous water heaters from everyday life.

    How to connect instantaneous water heaters?

    The instantaneous water heater requires a power connection and hoses that feed the water in and out. A detailed explanation of how to connect an instantaneous water heater can be found on the user manual.
    Some manufacturers also provide you with videos that guide you through the installing process.

    How much does a good instantaneous water heater for the pool cost?

    Good instantaneous water heaters for the pool range in price from approx. 70 to 400 $.

    Where can you buy good instantaneous water heaters for the pool?

    Instantaneous pool heaters can be purchased from online retailers such as Amazon or eBay, or from special online stores for pool equipment.

    What alternatives are there to instantaneous pool heaters?

    As an alternative to an instantaneous water heater, heat pumps, pool solar heaters or solar mats can be used to heat the pool.

    Is there a test from Consumer Reports or Which? on instantaneous pool heaters?

    Consumer Reports and Which? have not yet published a comparison of instantaneous water heaters for pools and have therefore not yet chosen a test winner. Our bestseller list contains the models that are currently most popular with buyers.

    Editor's note: The opinions expressed here are those of the author alone. The content has not been endorsed, reviewed, approved, or in any way financially supported by any advertiser. We only include products we believe to be useful. How we work

    *Price includes VAT, plus shipping. Customer reviews, prices, delivery times and costs may change in the meantime. By linking to selected online shops and partners, we may receive a small affiliate commission. There are no additional costs for you.

    Tim

    Tim has been surfing and paddling for over 20 years and is known from FitForFun, FreshSurf, and Zeitjung. Whether surfing in Portugal, snorkeling in Greece or wakeboarding in Germany ... one thing is certain: you'll definitely find him in the water!

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