Why Pool Heating Matters

electric pool heaters
 

Whether you want to extend your swimming season or enjoy more comfortable water temperatures, having a reliable pool heater is a must, especially in Connecticut, which has four distinct seasons and limited pool time. Early spring mornings and cool fall evenings don’t have to cut your swim time short. With the right heater, you can enjoy your pool well beyond the summer months.

Not all heating systems are created equal; many options include gas, propane, electric, heat pump, and solar. Learn more about all of these Heating Pool Technologies, and continue reading to learn more about choosing between electric pool heaters and heat pumps. 

The choice depends on several factors, such as your pool size, how often you swim, your budget, and your goals for long-term energy savings. Understanding the differences can help you make a smart investment that enhances your pool experience for years to come. 

What Is an Electric Pool Heater?

electric pool heaterElectric pool heaters, also known as electric resistance heaters, use electrical current to warm pool water. These systems operate by passing water over a heated coil or element. As the water flows over the hot surface, it absorbs the heat and circulates back into the pool.

Because they don’t rely on air temperature, electric heaters can deliver consistent performance regardless of the weather, making them a dependable option during cold snaps or early-season swims. However, they typically consume more energy and are best suited for pools that require occasional or rapid heating, such as smaller inground pools or spas.

Key Characteristics:

  • Uses electricity to generate heat directly
  • Simple to install and compact in size
  • Provides fast heating, ideal for short-term use
  • Best for smaller pools or spas that aren’t used daily

What Is a Pool Heat Pump?

Pool heat pumps work quite differently than electric pool heaters. Rather than generating heat, a heat pump transfers warmth from the surrounding air into your pool water using a compressor and heat exchanger. This makes them significantly more energy-efficient than electric heaters, especially in moderate to warm climates.

As long as the air temperature stays above approximately 50°F, heat pumps are capable of maintaining a steady and comfortable water temperature with minimal energy use. It may take longer to heat the water initially, but once the pool reaches the desired temperature, a heat pump will keep it there efficiently.

Key Characteristics:

  • Extracts heat from ambient air and transfers it to the pool
  • Low operating costs over time
  • Environmentally friendly and quiet operation
  • Ideal for pools used regularly throughout the season
  • Performs best in consistent outdoor temperatures above 50°F

Key Differences Between Electric Pool Heaters and Heat Pumps

Choosing between an electric pool heater and a heat pump depends on how quickly you want to heat your pool, how often you use it, and how much you’re looking to spend—both upfront and in the long run. Below is a breakdown of the core differences between these two heating options to help you decide which system best matches your needs.

Heating Method

  • Electric pool heaters generate heat instantly using electric resistance. Water passes over a hot coil, gaining warmth before reentering the pool.
  • Heat pumps don’t create heat; they transfer it from the surrounding air. A fan pulls in warm air, which is then compressed and transferred to the pool water through a heat exchanger.

Energy Efficiency

  • Electric heaters are generally less efficient and consume more energy, especially in colder weather. They’re best for quick bursts of heat but are not ideal for daily heating due to high operational costs.
  • Heat pumps are much more energy-efficient, especially in climates like Connecticut, where daytime temperatures in spring and fall often stay above 50°F. They require far less electricity to maintain a consistent water temperature. 

Operating Temperatures

  • Electric pool heaters can function in any outdoor temperature, making them a good choice for early spring or late fall swimming in CT.
  • Heat pumps become less effective in air temperatures below 50°F, which can limit their performance during the change in seasons or colder nights.

Heating Speed

  • Electric heaters provide rapid heating, making them great for spas or for pool owners who want to heat water on demand.
  • Heat pumps heat water more gradually. While they initially take longer to raise the water temperature, they’re excellent at maintaining a set temperature over time.

Installation and Size

  • Electric heaters are compact and easier to install, typically requiring only a standard electrical connection.
  • Heat pumps are larger and require proper placement for airflow and clearance, along with a 220V electrical supply and sometimes a concrete pad.

Cost Considerations

  • Electric heaters have a lower upfront cost but higher long-term operating expenses due to greater energy consumption.
  • Heat pumps tend to cost more initially, but their energy efficiency results in significantly lower monthly utility bills, making them more cost-effective over time.

Ideal Use Cases

  • Choose an electric pool heater if:
    • You have a small pool or spa
    • You swim infrequently and want fast heat
    • You’re not concerned about higher energy bills
  • Choose a heat pump if:
    • You use your pool regularly
    • You want to maintain a steady water temperature
    • You’re looking for energy savings and long-term efficiency

Pros and Cons: Electric Pool Heaters

Electric resistance heaters can be a smart solution for certain pools, especially when fast heat and compact size are priorities. Here’s a closer look at their advantages and drawbacks:

Pros of Electric Pool Heaters

  • Rapid Heating: Electric heaters can raise water temperature quickly, making them ideal for spas or pools used on demand.
  • All-Weather Performance: Unlike heat pumps, electric heaters perform well even in cold outdoor temperatures.
  • Compact Size: These units are small, space-efficient, and easy to install, especially where space is limited.
  • Reliable for Short-Term Use: Perfect for pool owners who only need occasional heating.

Cons of Electric Pool Heaters

  • Higher Operating Costs: Electric resistance heating consumes a lot of energy, leading to higher monthly utility bills.
  • Less Efficient Over Time: Not cost-effective for maintaining constant temperatures in larger pools.
  • Limited Sustainability: Higher energy use results in a larger environmental footprint compared to more efficient options.

Best For: Small inground or above-ground pools, spas, and pool owners who occasionally want quick heating rather than continuous temperature control.

Pros and Cons: Pool Heat Pumps

Pool heat pumps have gained popularity for their efficiency and eco-friendliness. While they require a higher upfront investment, they typically pay off with lower energy usage and long-term savings.

Pros of Heat Pumps

  • Energy Efficiency: Heat pumps use ambient air to heat the pool, making them one of the most energy-efficient pool heating options available.
  • Lower Operating Costs: Ideal for regular pool users—costs less to operate long-term than electric resistance heaters.
  • Environmentally Friendly: Lower electricity consumption means fewer greenhouse gas emissions.
  • Quiet and Consistent Performance: Newer models offer silent operation and maintain steady water temperature once set.

Cons of Heat Pumps

  • Higher Upfront Cost: Initial purchase and installation costs are higher than those of traditional electric heaters.
  • Slower Heating Time: Takes longer to warm the pool, especially if the water is cold at start-up.
  • Temperature Dependent: Efficiency drops in cooler air temperatures below 50°F, which may limit performance in early spring or late fall.

Best For: Pool owners who use their pool frequently and want an efficient, steady-temperature solution with long-term cost savings.

The Swimming Pool Store offers energy-efficient pool heat pumps from top brands, such as the AquaComfort Heat Pump, Hayward Heat Pro Heat Pump, and the Pentair Ultratemp Heat Pump.

To learn more about the different types of pool heaters, the technology, cost-efficiency, and pros and cons of each type, check out our FREE Guide:

Navigating Heating Pool Technologies: A Comprehensive Guide

When to Choose an Electric Heater or a Heat Pump

Choosing between an electric pool heater and a heat pump ultimately depends on your pool usage, budget, and heating priorities. Here’s a quick guide to help you decide which system fits your needs best:

Choose an Electric Pool Heater if You:

  • Have a small pool or spa that requires quick heat.
  • Swim infrequently or only on weekends and need fast warm-up times.
  • Want a compact and easy-to-install option.
  • Consistent heating performance is needed regardless of air temperature.
  • Are okay with higher energy costs in exchange for fast results.

Choose a Pool Heat Pump if You:

  • Use your pool regularly throughout the season.
  • Want to maintain a steady water temperature at a lower monthly cost.
  • Live in a region like Connecticut, where average seasonal temperatures stay above 50°F.
  • Are willing to invest more upfront for long-term energy savings.
  • Prefer an eco-friendly and efficient heating option.

The experienced pool technicians at The Swimming Pool Store can help evaluate your pool system and recommend the best heating solution for your needs with a pool heater consultation. Also see: Above Ground Pool Heat Pump

Explore Heat Pump Options from The Swimming Pool Store

We carry a curated selection of high-performance, energy-efficient pool heat pumps that are built to withstand the changing New England weather. 

AquaComfort XL Heat Pump

A top choice for homeowners in the Northeast, the AquaComfort XL is known for its durability, whisper-quiet operation, and smart defrost technology that ensures optimal performance even on chilly spring mornings.

  • Delivers powerful, consistent heating
  • Energy-efficient and environmentally friendly
  • Backed by AquaComfort’s Total Comfort Control technology

Learn more about the Aquacomfort Heat Pump.

Hayward HeatPro Heat Pump

Built with corrosion-resistant titanium heat exchangers, the Hayward HeatPro is an ideal choice for saltwater pool systems and coastal regions.

  • Quiet operation with low sound levels
  • Durable housing resists UV and chemicals
  • Excellent for both inground and above-ground pools

Pentair UltraTemp Heat Pump

The Pentair UltraTemp Heat Pump delivers premium performance, energy efficiency, and long-lasting durability—ideal for Connecticut pool owners who want consistent warmth without high utility bills.

Key Features:

  • Titanium heat exchanger for superior corrosion resistance
  • AutoSet™ temperature control to maintain optimal water temp
  • LCD control board with intuitive interface
  • Environmentally friendly R410A refrigerant
  • Quiet operation and rugged, weather-resistant design

This model is an excellent choice for inground pool owners looking to heat smarter this season. 

At The Swimming Pool Store, our experienced team can help you evaluate the best pool heating options for inground pool heaters and above ground pool heaters. 

Want Help Choosing the Right Pool Heater?

If you’re still weighing your options between an electric heater and a heat pump, you’re not alone. Many pool owners in Connecticut want the perfect balance of comfort, cost-efficiency, and reliability, but choosing the right system can depend on several personal factors.  :

  • Your pool size and type (above-ground or inground)
  • Frequency of use and heating goals
  • Your energy efficiency preferences
  • Your budget for installation and long-term use

Whether you’re heating your pool for weekend relaxation or want a consistent, season-long temperature, we’ll help you make the best choice for your needs and your wallet.

Browse our full selection of:

Or reach out to schedule a pool heating consultation today.

Heat Your Pool Smarter in 2025

As spring approaches, now is the perfect time to evaluate your pool heating needs and get ready for a more comfortable swimming season. Whether you choose the rapid, on-demand heating of an electric pool heater or the long-term efficiency of a heat pump, the right system can dramatically improve how you enjoy your pool.

If you’re not sure which option is best for you, our team is here to help with expert advice and access to top brands like Hayward, AquaComfort, and Pentair. With smart planning, you’ll be ready to dive in sooner and stay warmer this pool season.

For over 50 years, The Swimming Pool Store has helped Connecticut pool owners enjoy more from their pools with expert heating solutions and high-quality products. Whether you’re looking for fast heating or energy-efficient performance, we offer trusted brands and professional guidance. Contact us today to explore the best pool heaters for your needs and learn more about the difference between heat pumps and electric pool heaters.