5 Best Pool Heaters for Saltwater Pool (Reviews) 2020

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If you are sick of jumping into a cold saltwater swimming pool and waiting for the body to adjust to the water temperature, then the best pool heater for saltwater pool might be the right device for you.Best Pool Heater for Saltwater Pool Reviews

A pool heater for a saltwater pool will extend your swimming season. And because I believe you’re here to know how to find the best swimming pool heater, let’s jump to it.

The market today is full of different swimming pool heaters, but not all can work well with saltwater. Saltwater is known to cause corrosion and accelerate rusting; thus a model with components prone to rust won’t even last you a season. So, you have to make sure you get the best quality.

The review below has the top best pool heater for saltwater pool and beneath it is the buyer’s guide to help you buy the right model.

You may want to see our Best Pool Heaters for Inground and Above Ground Pools

Top 5 Best Pool Heaters for Saltwater Pools in 2020

Brand & NameSizesVoltsPrice
Hayward H400FDP400,000240vCheck Price
Ecosmart ECO Pool Heater-240vCheck Price
Hayward HP21404T140,000240vCheck Price
FibroPool FH05555,000220cCheck Price
Sta-Rite SR400LP400,000220Check Price

1. Hayward H400FDP – Pool and Spa Heater (Propane, Low Nox)

If you’re searching for the best pool heater for a saltwater pool that will minimize your heating costs while giving you the best outcome, the Hayward H400FDP is your ideal choice.Hayward H400FDP Universal H-Series 400,000 BTU Pool and Spa Heater, Propane, Low Nox

It is a universal H-series gas heater from Hayward and uses propane gas to produce 400,000 BTU heating power. The Hayward H400FDP pool and spa heater have proved to many customers of being reliable, hydraulically effectiveness solution for any above or ground pool.

Additionally, it’s environmentally friendly since it produces low NOx emissions for you to enjoy a peace of mind and efficient luxury. The Cupro Nickel Finn Plate heat exchanger made using the state-of-the-art technology allows it to resists corrosion and rust making it an ideal saltwater pool heater.

One more thing, the model features a forced draft combustion system which continually moves air through its combustion chamber in a precise flow rate.


  • Cupro Nickel Finn Plate Heat Exchanger
  • Superior Performance and Reliability Hydraulic
  • Easy and versatile professional installation
  • Patented polymer header design
  • Forced Draft Combustion System
  • L.E.D. Digital Control Panel


  • Fuel cost
  • Expensive

2. Ecosmart ECO Pool Heater – for Inground and Above Ground Pools

The Ecosmart ECO Electric Tankless heater is a well-performing pool heater that comes with patented self-modulating technology. The heater can heat your saltwater and freshwater pool during the warm and cold seasons.Ecosmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology

The unit comes with digital temperature control which allows you to set the outlet temperature with increments on one degree, for you to easily set the temperature anywhere between 80°F to 140°F.

Additionally, when the heater is sized currently, it will provide you will provide you with continuous hot water heating. Its heating element heats the water as it passes through instead of storing it like a tank-type pool heater.

EcoSmart tankless water will save you money space and energy. The unit takes very little space and comes with a sleek, wall-mounted design that frees up floor space. Self-Modulating technology uses the amount of energy required.


  • Tankless pool water heater
  • Compact, durable, stylish design
  • Copper and stainless components
  • Self-modulating technology
  • Digital temperature control
  • Simple installation


  • Not suitable for larger pools

3. Hayward HP21404T – HeatPro Titanium Heat Pump (Square)

One thing that’s is needed from the best pool heater is efficiency and reliability, and that’s what this Hayward HP21404T HeatPro will provide you will. Many customers have praised it for being reliable, efficient and quiet when operating.Hayward HP21404T HeatPro Titanium 140,000 BTU Heat Pump, Square

The model features titanium heat exchangers with a counter-flow while providing unrivaled and hard-nosed performance even on the harshest conditions.

Additionally, the unit comes with Corrosion-Resistant Evaporator Fin which makes it ideal for use saltwater pools. The acoustic compressor cover utilizes quiet technology to minimize the compressors sound level.

The stainless steel hardware and the durable injection molded and UV resistant body panels are impervious to corrosion and rust giving it the best durability.


  • Heavy-duty scroll compressors
  • Ultra-Gold evaporator fin
  • Digital LED Control Panel
  • UV-resistant body panels
  • Stainless steel hardware
  • Polyethylene screen


  • Fairly heavy

4. FibroPool FH055 – In Ground Swimming Pool Heater

Enjoy and extend your swimming pool season with the FibroPool FH055 pool heater. The unit utilizes a Copeland pressure differential compressor plus a titanium heat exchanger which maximizes the energy efficiency to achieve COP of 5.92.FibroPool FH055 In Ground Swimming Pool Heater

The model also comes with a sleek, slim, weatherproof casing designed to accommodate a variety of placement choices. The smooth side access to its standard fitting reduces the installation time and hassle.

Furthermore, this pool heater for saltwater pool features an easy-set digital display which allows for easy and quick adjustments from the unit.

The unit can also be extended using an optional extension cable for optimal convenience. The model also features an enamel coated steel chassis that’s designed to withstand all elements season after season.


  • 100% Titanium heat exchanger
  • Digital display and controller
  • Top Energy Efficient System
  • Durable construction
  • Weatherproof
  • Easy to install


  • NO install guide

5. Sta-Rite SR400LP – Max-E-Therm Pool And Spa Heater

The Sta-Rite SR400 is a propane pool and spa heater with a power output of 400,000 BTU. The model measures 127lbs, and it has been named the most energy efficient natural gas pool/spa heater in the market.Sta-Rite SR400LP – Max-E-Therm Pool And Spa Heater

It’s both eco and economically friendly as it comes with innovative Max E-Therm technology. The unit also comes with an LED panel which allows you to view the temperature settings.

The model also features a troubleshooting feature which makes it super easy to identify a problem on the pool heater. And to give the unit true durability, it’s coated with a Dura grass. You can use this model with both indoor and outdoor saltwater pools.


  • Sleek, compact and lightweight design
  • Advanced Max-E-Therm technology
  • Dura-Glass Rustproof Sleek Housing
  • Ideal for retrofit installation
  • Lower operating costs


  • Loud operation

Best Pool Heater for Saltwater Pool | Buying Guide

Best Pool Heater for Saltwater Pool ReviewsAfter going through the review above, you will agree with me that picking one model form the list isn’t that easy. All the products on the list are different with distinct features. But, you can use the below guide to identify the model that fits you best. Here are the things to consider when making your selection:


Pool heaters are of three types; gas pool heater, electric pool heaters, and solar powered pool heaters. With gas prices rising, the gas pool heater is becoming less and less popular as its purchase and operation are expensive. However, they are excellent for quickly heating the pool. If you have a vacation home or use your swimming pool for parties or special occasions, this is your type of heating.

Electric pool heaters are great for those who do not mind seeing their electricity bills go. You will also have to pay a few dollars each year to maintain the heating. However, they are excellent because they will help you climb the 90-degree range if you wish and they are adjustable so you can choose the temperature at which you want the water in your pool to reach.

In my opinion, solar pool heaters are the best. They are cheap to make yourself or buy, and they have a free source of fuel in the sun. However, if you have a few days of cloudy and cold weather, you will not be able to heat your pool.

Pool heater size:

Your pool size and shape will determine the extent of the pool heater required. Pool heater size is measured in British Thermal Units (BTUs) and is related to surface area and capacity of your pool. The higher the BTUs, the faster the heating of your pool water and the more power needed.

The large pool takes longer to heat up with some heater types and might take lesser time with a more powerful pool heater. An irregular pool will require a much great pool heater or a heat pump for even water heating.

Pool Type – in-ground or above ground:

Different pool heaters are made for different pool type. Some pool heaters can only be used with in-ground pools while others can only be used with above-ground pools. You need to check the connections and the product description to ensure you get the right model.

Best Pool Heater for Saltwater Pools | (FAQs)

Do I need a pool heater?

If you’re living in a warm area, a pool heater can be a waste of your funds. But, if your swimming pool is frequently cold and you and you want to enjoy it more, getting a good swimming pool heater can be a great decision.

Can I install a swimming pool heater by myself?

Depending on the type of heater, yes you can. The gas and solar panels are the easiest to install. All you need is fix the unit on the right position and connect it to the gas line if it’s a gas unit, and for a solar panel, all you need is installed in a position that it will be getting the maximum sunlight rays. However, when it comes to electric pool heater, you will need a qualified electrician to do the wiring.


Pool heaters allow swimmers to enjoy the water at a comfortable temperature most of the year or at least as long as the weather permits. Depending on the system, the water is sent to a heating unit, heated to the desired temperature and returned to the main body of the water and considering all of your options so that you can find your best pool heater for a saltwater pool.

If you decide to do so, this information will help you to quickly determine the most suitable radiator for your needs and budget.

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About the author

Sharif Miah

I am Sharif, 22, a student, currently doing the BBA program as well as an online Blogger. I am an adorable fan of swimming and also love any water sports -surfing, scuba diving, kite surfing & paddle boarding. I love to share my experiences with people. I hope you are enjoying my information and lessons!

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