Inground Pool Heaters

Pool Heaters for Inground Pool Systems

This collection includes pool heaters designed for inground swimming pools, helping maintain comfortable water temperatures and extend the swim season. Whether you’re dealing with cold mornings, short swim windows, or inconsistent water temperatures, the right pool heater restores control and usability.

Pool heaters are commonly replaced when heating becomes slow, inconsistent, or stops entirely.

Fix Common Pool Heating Problems

A properly sized pool heater solves issues like:

• Pool water not heating or heating too slowly

• Inconsistent water temperature

• Short swim seasons due to cold weather

• Heater failing to maintain set temperature

• System shutdowns caused by aging components

If your pool struggles to stay warm, the heater is often undersized, outdated, or failing internally.

Types of Pool Heaters in This Collection

This collection includes the most common heater types used in residential inground pools:

• Gas pool heaters (natural gas & propane)

• Electric pool heaters

• Heat pump pool heaters

• High-efficiency and energy-saving models

• Brand-specific replacement heaters

Each heater type offers different benefits depending on climate, usage, and energy availability.

How to Choose the Right Pool Heater

Before ordering, consider the following:

• Pool size (gallons & surface area)

• Desired heat-up speed

• Climate and average outdoor temperature

• Available energy source (gas, electric)

• Plumbing and electrical compatibility

If your current heater struggles to reach or hold temperature, upgrading to a properly sized unit improves performance and efficiency.

Popular Pool Heater Replacements

Customers most often shop this collection to replace:

• Aging or inefficient gas pool heaters

• Failed heat exchangers

• Heaters that no longer ignite or maintain temperature

• Systems that can’t keep up during cooler months

Pool heaters are a major investment — choosing the correct type and size is critical.

Pool Heater FAQs

What type of pool heater is best?
Gas heaters heat fastest, heat pumps are most energy-efficient, and electric heaters work best for smaller pools or mild climates.

How do I know what size heater I need?
Heater size depends on pool volume, climate, and desired temperature rise.

Can a pool heater extend my swim season?
Yes. The right heater can extend swimming by several months in most regions.

Why is my pool heater running but not heating?
Common causes include undersizing, heat exchanger issues, or sensor failure.

Is replacing a pool heater DIY?
Installation typically requires plumbing, gas, and/or electrical work and is best handled by a professional.