Therm 5.5kW Flo Thru Heater [15" x 2"] [230V] [w/Box] [Cal Spas] [Generic] (C2550-0011)

Hydro-Quip 5.5kW [15" x 2"] FloThru Heater [w/Box] [Cal Spas] (26-0011-7S-K)

Type:	Heaters
Mfg	Hydro-Quip
Mfg Part #	26-0011-7S-K
Replaces:	26-0011-7S-K, 26-0011-F-RS-K, 388712, 9145-014, B24055XL, C2550-0011, F2550-0001, F2550-0011, HEA14100121, HEA14100401, XL5.5, XL55, C2550-0011
Length:	15"
Voltage:	120v/240v
Kilowatts:	5.5kW
Plumbing Size:	2"

COMPARE AT $256.99

OUR PRICE $196.99

STOCK STATUS IN STOCK Ships Usually The Same/Next Business Day

Quantity

✓ $9.88 Standard Shipping
Under 25 lbs. Contiguous USA ✓ Secure Checkout
Safe & secure ✓ Expert Parts Support
We’re here to help

Helpful Heater Articles

Recommended Before Purchase

A Complete Guide To Spa Heater Replacement

A hot tub heater is one of the most important parts of your spa system. Without it, your hot tub quickly becomes little more than a large tub of ci...

Read Article

The Importance Of Choosing The Right Spa Heater

Choosing the right heater for your hot tub is extremely important. Compatibility is also a significant factor. Here are ...

Read Article

How To Identify A Balboa Spa Heater & Find The Correct Replacement

Finding the correct replacement heater is one of the most important steps in repairing a hot tub or spa control system. Ma...

Read Article

How To Use The Heater Finder To Find The Right Hot Tub Heater

When it comes to maintaining your spa, hot tub, or pool, ensuring that your heater is functioning properly is crucial for ...

Read Article

SHARE & GET $10 FOR EVERY FRIEND WHO JOINS US & MAKES A PURCHASE!

TAGS: heaters, hydroquip

Details

The Hydro-Quip 5.5 kW flo thru heater is designed for compatible Cal Spas applications using a 15 inch by 2 inch 230 volt format and includes a box-style configuration. Heaters with a box arrangement are useful because they help preserve the original equipment layout in systems built around that style of installation.

This replacement is especially useful when the original heater has failed, is leaking, or no longer provides dependable heat and the system requires the boxed configuration to remain intact. Matching both the application and physical setup helps keep the service work more accurate.

It is a practical service option when restoring heater performance in a compatible Cal Spas system means keeping the original boxed assembly format.

Therm 5.5 kW flo thru heater for compatible Cal Spas applications
15 inch by 2 inch format with 230 volt operation
Includes box-style configuration
Useful when the original heater is failed or unreliable
Supports more accurate replacement and dependable heating

Hydro-Quip – Spa Control Systems, Heaters, Pumps and Electronic Components

Who is Hydro-Quip?

Hydro-Quip is a leading manufacturer of spa control systems and electronic components, known for delivering reliable and innovative solutions for hot tubs and hydrotherapy systems. With decades of experience in the spa industry, Hydro-Quip designs equipment that supports system control, heating, and overall performance. Their products are widely used by spa manufacturers, service professionals, and homeowners for both new installations and replacement applications.

What products does Hydro-Quip specialize in?

Hydro-Quip specializes in spa control systems, electronic control packs, heaters, pumps, sensors, and accessories. Their product lineup includes digital control systems and replacement components designed to regulate temperature, manage jet operation, and control filtration cycles. These systems are essential for maintaining consistent spa performance and user control.

Why choose Hydro-Quip parts for your pool or spa?

Hydro-Quip products are known for reliability, ease of installation, and strong performance in spa environments. Their control systems offer intuitive operation while supporting energy efficiency and system safety. Professionals choose Hydro-Quip for dependable components that integrate easily and provide long-lasting functionality.

How do you identify and choose the correct Hydro-Quip part?

To select the correct Hydro-Quip component, it’s important to match your spa system model, control pack type, voltage, and heater specifications. Reviewing part numbers and compatibility ensures proper fit and performance. Choosing the right component helps maintain full system operation and prevents compatibility issues.

Need help finding the right Hydro-Quip part?

At Bath & Spa Parts Online, we carry a wide selection of Hydro-Quip pool, spa, and bath parts ready to ship. Can’t find what you need? Contact our Product Specialists at 800-918-9143, use the live chat, or visit our Contact Us page. For installation guides, part diagrams, and troubleshooting resources, visit the Bath & Spa Parts Online Knowledge Base for expert support.