Balboa M7 15" 5.5 kW Spa Heater Assembly [2" x 2"] (55624) (G7512)

Balboa Water Group Spa Replacement Heater

The 55624 spa replacement heater is specially designed by Balboa Water Group and is one of the most popular models of replacement heaters. It uses Balboa's revolutionary M7 technology to deliver consistent results. This is a 5.5 kW heater that is compatible with the Balboa systems listed in our product listing. If you have difficulty locating your heater, we suggest that you use our Heater Locator here on our website.

Balboa Spa Replacement Heaters have a revolutionary design that provides additional reliability and ease of installation when compared to conventional spa systems. Through the years, Balboa Water Group (BWG) continues to be leader in the spa heater industry in terms of design, innovation, and reliability. These are highly sought after qualities when choosing the right product for your spa and for your family. We also carry the largest selection of spa heaters in the industry. Whether you are replacing your spa heater on an older spa system with pressure switch technology or whether you are replacing a spa heater with Balboa's modern M7 patented technology, we have the right solution for you. That is what makes us the leader in the spa industry for more than 30 years!

If you need assistance in locating the proper spa heater for your system, we suggest that you try our HEATER LOCATOR.


You can find other support articles in our Bath & Spa Parts Online Knowledge Base.


This Balboa Spa Heater is compatible with the following Balboa Spa Control Systems:

More Information About The Balboa M7 Spa Heater:

Balboa's M7 Control Systems are the most advanced spa controls ever developed. Balboa created the first reliable electronic spa control nearly twenty years ago and M7 technology is the biggest breakthrough since. By coupling our unique, patented software and design with state-of-the-art materials, M7 technology provides you a more reliable system that is less expensive to install and maintain. M7 controls are intended to accommodate the most demanding new spa designs and advanced water temperature management into the new millennium.

Balboa's cutting-edge product design and commitment to the advancement in technology continues to make us the leader in the spa industry. Balboa's M7 spa heaters are just another great example of their serious commitment to quality and innovative design. You can rest assured in knowing that you have the highest quality products available whether you are purchasing a spa replacement heater or have been fortunate to have genuine Balboa Water Group (BWG) products already installed in your hot tub or spa. Bath & Spa Parts Online carries the complete line of Balboa heaters!

Here are some of the great features available in the M7 patented technology spa heaters:

Spa Heater Tube:

• No welds required on tube
• 316 stainless steel available
• Front mounted
• Easier to service

Spa Heater Element:

• Incoloy & Titanium material options
• Enlarged bend radius
• No tie wires
• Minimizes debris buildup
• Maximizes flow through
• 3/8" hex nut connectors for added stability and contact area

Smart Sensor Technology:

• Both sensors are identical
• Sensors monitor each other via software to regulate spa function (water flow, temperature)
• Assures a proper operating environment for the heating element
• Multiple high limit safety systems
• All safety functions are always active
• Eliminates excessive cycling
• Automatically adapts to flow direction
• Detects flow restrictions such as a dirty filter or slice valve
• Minimizes calcium buildup on the element

Standardized Sensor Placement:

• No sensor installation in spa wall
• No pressure switch problems
• No sensor mount
• Pretested with sensors in place
• No external sensor wires
• Reduces installation costs/errors
• May be plumbed from the suction or pressure side
• Easy to service and troubleshoot