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  • Restore Your Hot Tub's Heat with the Gecko S-Class 4.0kW Heater Your hot tub shouldn't sit cold. The Gecko S-Class 4.0kW Flo-Thru Heater Assembly (26-0800-5S-KPU) is a reliable, direct-replacement heating solution designed to get your spa back up and running — fast. Shop and order at Western Tub and Pool. [Browse Our Parts Catalogue] | [Call Us: 1-855-248-0777] Why the Gecko S-Class 4.0kW Heater Assembly? Powerful, Consistent Heating Delivers 4.0kW of steady, efficient heat output, ensuring your spa reaches and maintains your desired temperature without overworking your system. Direct Drop-In Replacement Engineered as a true flo-thru heater assembly, this unit is designed to replace worn or failed heaters with minimal hassle — no modifications required for compatible systems. Durable Construction Built to Gecko's high manufacturing standards, the S-Class heater assembly is designed for long-term reliability in residential and commercial spa environments. Broad Compatibility This heater is used across a wide range of hot tub brands and models, making it one of the most versatile replacement spa heaters on the market. Product Specifications Specification Detail Part Number 26-0800-5S-KP Power Output 4.0kW Heater Type Flo-Thru Assembly Voltage 240V Series Gecko S-Class Application Hot Tub / Spa Heater Replacement Note on Dimensions and Weight: Dimensions and shipping weight may vary slightly depending on regional warehouse stock. Contact us at 1-855-248-0777 or fixmytub@gmail.com for exact specifications before ordering. Compatible Hot Tub Brands and Models The Gecko S-Class 4.0kW Flo-Thru Heater Assembly is used across many popular spa brands, including models manufactured by: Beachcomber Hot Tubs Jacuzzi / Sundance Spas (select models) Nordic Hot Tubs Hydropool Maax Spas Vita Spas Softub Marquis Spas Coast Spas ClearWater Spas And many other brands using Gecko IN.XE, IN.YE, IN.XM, IN.YM, SSPA, and S-Class control systems Not sure if this part fits your hot tub? Send us your make, model, and serial number at fixmytub@gmail.com and our team will confirm compatibility before you order. Compatible Gecko Control Systems This heater assembly is compatible with the following Gecko controls (among others): Gecko IN.XE Series Gecko IN.YE Series Gecko IN.XM Series Gecko IN.YM Series Gecko SSPA Series Gecko S-Class Pack Systems Cross-Reference Part Numbers If you're searching by an alternate part number, the Gecko S-Class 4.0kW Heater Assembly may also be referenced as: 26-0800-5S-KP 0800-221057 XE/YE Series Heater 4.0kW S-Class Heater 4.0kW 240V Tip: If you have a part number from your existing heater, check it against our catalogue or call us — we'll match it for you. Related Replacement Parts When replacing your spa heater, you may also need: Heater Unions and Fittings — Ensure a watertight connection Pressure Switches — Often replaced alongside heater assemblies Thermistors / Temperature Sensors — Commonly worn with aging heater units Circuit Boards / Control Packs — If your system has additional faults O-Rings and Seals — Prevent leaks around heater connections Browse our full range of compatible spa repair parts in our online catalogue, or call 1-855-248-0777 for bundle recommendations. Frequently Asked Questions How do I know if this heater will fit my hot tub? The best way to confirm compatibility is to check your existing heater's part number or your spa's control system model. You can also send us your hot tub's make, model, and serial number — along with photos if possible — to fixmytub@gmail.com and we'll verify the fit before you order. What does "Flo-Thru" mean? A flo-thru heater is a type of spa heater where water flows directly through the heater tube to be warmed. This design is common in most modern hot tubs and is highly efficient for maintaining water temperature. Can I install this heater myself? Many experienced DIY spa owners successfully replace their own heater assemblies. However, if you're unsure, we recommend consulting a qualified spa technician. Our team is also happy to walk you through the process — give us a call at 1-855-248-0777. Why does my replacement part have a letter suffix (U, C, E, or A)? Western Tub and Pool is an international e-tailer with warehouses across multiple regions. To help identify the part's origin, we add a suffix to the part number: U = United States C = Canada E = Europe A = Asia The same part may be stocked in multiple regional warehouses. Rest assured, all versions meet the same product specifications — the suffix simply reflects where the part was sourced and may affect shipping origin and delivery times. What if I'm not sure which part I need? No problem. Send us an email at fixmytub@gmail.com with your hot tub's make, model, serial number, and photos of the faulty part. Our team specializes in hard-to-find spa parts and will do our best to identify exactly what you need. Can't Find the Part You're Looking For? We specialize in hard-to-find hot tub and spa repair parts. If it's not in our catalogue, chances are we can still source it for you. Send us an email:fixmytub@gmail.com Call us: 1-855-248-0777 Include: Photos, make and model of your hot tub, serial number, and any part numbers you have on hand. Order the Gecko S-Class 4.0kW Heater Today Don't let a broken heater keep you out of your hot tub. Shop and order at Western Tub and Pool — your trusted source for genuine spa replacement parts, shipped from regional warehouses across North America, Europe, and beyond. [Shop Our Full Parts Catalogue] | [Call 1-855-248-0777] | [Email fixmytub@gmail.com]

    • Gecko S-Class 4.0kW Flo-Thru Heater Assembly

    hydroquip

    €98.08
    (No reviews yet) Write a Review
    SKU:
    26-0800-5S-KPU
    UPC:
    26-0800-5S-KPU
    Width:
    15.00 (in)
    Height:
    6.00 (in)
    Depth:
    6.00 (in)
    Adding to cart… category.add_cart_announcement

    Product Description

    Restore Your Hot Tub's Heat with the Gecko S-Class 4.0kW Heater

    Restore Your Hot Tub's Heat with the Gecko S-Class 4.0kW Heater Your hot tub shouldn't sit cold. The Gecko S-Class 4.0kW Flo-Thru Heater Assembly (26-0800-5S-KPU) is a reliable, direct-replacement heating solution designed to get your spa back up and running — fast. Shop and order at Western Tub and Pool. [Browse Our Parts Catalogue] | [Call Us: 1-855-248-0777] Why the Gecko S-Class 4.0kW Heater Assembly? Powerful, Consistent Heating Delivers 4.0kW of steady, efficient heat output, ensuring your spa reaches and maintains your desired temperature without overworking your system. Direct Drop-In Replacement Engineered as a true flo-thru heater assembly, this unit is designed to replace worn or failed heaters with minimal hassle — no modifications required for compatible systems. Durable Construction Built to Gecko's high manufacturing standards, the S-Class heater assembly is designed for long-term reliability in residential and commercial spa environments. Broad Compatibility This heater is used across a wide range of hot tub brands and models, making it one of the most versatile replacement spa heaters on the market. Product Specifications Specification Detail Part Number 26-0800-5S-KP Power Output 4.0kW Heater Type Flo-Thru Assembly Voltage 240V Series Gecko S-Class Application Hot Tub / Spa Heater Replacement Note on Dimensions and Weight: Dimensions and shipping weight may vary slightly depending on regional warehouse stock. Contact us at 1-855-248-0777 or fixmytub@gmail.com for exact specifications before ordering. Compatible Hot Tub Brands and Models The Gecko S-Class 4.0kW Flo-Thru Heater Assembly is used across many popular spa brands, including models manufactured by: Beachcomber Hot Tubs Jacuzzi / Sundance Spas (select models) Nordic Hot Tubs Hydropool Maax Spas Vita Spas Softub Marquis Spas Coast Spas ClearWater Spas And many other brands using Gecko IN.XE, IN.YE, IN.XM, IN.YM, SSPA, and S-Class control systems Not sure if this part fits your hot tub? Send us your make, model, and serial number at fixmytub@gmail.com and our team will confirm compatibility before you order. Compatible Gecko Control Systems This heater assembly is compatible with the following Gecko controls (among others): Gecko IN.XE Series Gecko IN.YE Series Gecko IN.XM Series Gecko IN.YM Series Gecko SSPA Series Gecko S-Class Pack Systems Cross-Reference Part Numbers If you're searching by an alternate part number, the Gecko S-Class 4.0kW Heater Assembly may also be referenced as: 26-0800-5S-KP 0800-221057 XE/YE Series Heater 4.0kW S-Class Heater 4.0kW 240V Tip: If you have a part number from your existing heater, check it against our catalogue or call us — we'll match it for you. Related Replacement Parts When replacing your spa heater, you may also need: Heater Unions and Fittings — Ensure a watertight connection Pressure Switches — Often replaced alongside heater assemblies Thermistors / Temperature Sensors — Commonly worn with aging heater units Circuit Boards / Control Packs — If your system has additional faults O-Rings and Seals — Prevent leaks around heater connections Browse our full range of compatible spa repair parts in our online catalogue, or call 1-855-248-0777 for bundle recommendations. Frequently Asked Questions How do I know if this heater will fit my hot tub? The best way to confirm compatibility is to check your existing heater's part number or your spa's control system model. You can also send us your hot tub's make, model, and serial number — along with photos if possible — to fixmytub@gmail.com and we'll verify the fit before you order. What does "Flo-Thru" mean? A flo-thru heater is a type of spa heater where water flows directly through the heater tube to be warmed. This design is common in most modern hot tubs and is highly efficient for maintaining water temperature. Can I install this heater myself? Many experienced DIY spa owners successfully replace their own heater assemblies. However, if you're unsure, we recommend consulting a qualified spa technician. Our team is also happy to walk you through the process — give us a call at 1-855-248-0777. Why does my replacement part have a letter suffix (U, C, E, or A)? Western Tub and Pool is an international e-tailer with warehouses across multiple regions. To help identify the part's origin, we add a suffix to the part number: U = United States C = Canada E = Europe A = Asia The same part may be stocked in multiple regional warehouses. Rest assured, all versions meet the same product specifications — the suffix simply reflects where the part was sourced and may affect shipping origin and delivery times. What if I'm not sure which part I need? No problem. Send us an email at fixmytub@gmail.com with your hot tub's make, model, serial number, and photos of the faulty part. Our team specializes in hard-to-find spa parts and will do our best to identify exactly what you need. Can't Find the Part You're Looking For? We specialize in hard-to-find hot tub and spa repair parts. If it's not in our catalogue, chances are we can still source it for you. Send us an email:fixmytub@gmail.com Call us: 1-855-248-0777 Include: Photos, make and model of your hot tub, serial number, and any part numbers you have on hand. Order the Gecko S-Class 4.0kW Heater Today Don't let a broken heater keep you out of your hot tub. Shop and order at Western Tub and Pool — your trusted source for genuine spa replacement parts, shipped from regional warehouses across North America, Europe, and beyond. [Shop Our Full Parts Catalogue] | [Call 1-855-248-0777] | [Email fixmytub@gmail.com]

    Your hot tub shouldn't sit cold. The Gecko S-Class 4.0kW Flo-Thru Heater Assembly (26-0800-5S-KPU) is a reliable, direct-replacement heating solution designed to get your spa back up and running — fast.

    Shop and order at Western Tub and Pool.
    [Browse Our Parts Catalogue] | [Call Us: 1-855-248-0777]

     

    Why the Gecko S-Class 4.0kW Heater Assembly?

    Powerful, Consistent Heating

    Delivers 4.0kW of steady, efficient heat output, ensuring your spa reaches and maintains your desired temperature without overworking your system.

    Direct Drop-In Replacement

    Engineered as a true flo-thru heater assembly, this unit is designed to replace worn or failed heaters with minimal hassle — no modifications required for compatible systems.

    Durable Construction

    Built to Gecko's high manufacturing standards, the S-Class heater assembly is designed for long-term reliability in residential and commercial spa environments.

    Broad Compatibility

    This heater is used across a wide range of hot tub brands and models, making it one of the most versatile replacement spa heaters on the market.

     

    Product Specifications

    Specification

    Detail

    Part Number

    26-0800-5S-KP

    Power Output

    4.0kW

    Heater Type

    Flo-Thru Assembly

    Voltage

    240V

    Series

    Gecko S-Class

    Application

    Hot Tub / Spa Heater Replacement

    Note on Dimensions and Weight: Dimensions and shipping weight may vary slightly depending on regional warehouse stock. Contact us at 1-855-248-0777 or fixmytub@gmail.com for exact specifications before ordering.

     

    Compatible Hot Tub Brands and Models

    The Gecko S-Class 4.0kW Flo-Thru Heater Assembly is used across many popular spa brands, including models manufactured by:

    • Beachcomber Hot Tubs
    • Jacuzzi / Sundance Spas (select models)
    • Nordic Hot Tubs
    • Hydropool
    • Maax Spas
    • Vita Spas
    • Softub
    • Marquis Spas
    • Coast Spas
    • ClearWater Spas
    • And many other brands using Gecko IN.XE, IN.YE, IN.XM, IN.YM, SSPA, and S-Class control systems

    Not sure if this part fits your hot tub? Send us your make, model, and serial number at fixmytub@gmail.com and our team will confirm compatibility before you order.

     

    Compatible Gecko Control Systems

    This heater assembly is compatible with the following Gecko controls (among others):

    • Gecko IN.XE Series
    • Gecko IN.YE Series
    • Gecko IN.XM Series
    • Gecko IN.YM Series
    • Gecko SSPA Series
    • Gecko S-Class Pack Systems

     

    Cross-Reference Part Numbers

    If you're searching by an alternate part number, the Gecko S-Class 4.0kW Heater Assembly may also be referenced as:

    • 26-0800-5S-KP
    • 0800-221057
    • XE/YE Series Heater 4.0kW
    • S-Class Heater 4.0kW 240V

    Tip: If you have a part number from your existing heater, check it against our catalogue or call us — we'll match it for you.

     

    Related Replacement Parts

    When replacing your spa heater, you may also need:

    • Heater Unions and Fittings — Ensure a watertight connection
    • Pressure Switches — Often replaced alongside heater assemblies
    • Thermistors / Temperature Sensors — Commonly worn with aging heater units
    • Circuit Boards / Control Packs — If your system has additional faults
    • O-Rings and Seals — Prevent leaks around heater connections

    Browse our full range of compatible spa repair parts in our online catalogue, or call 1-855-248-0777 for bundle recommendations.

     

    Frequently Asked Questions

    How do I know if this heater will fit my hot tub?

    The best way to confirm compatibility is to check your existing heater's part number or your spa's control system model. You can also send us your hot tub's make, model, and serial number — along with photos if possible — to fixmytub@gmail.com and we'll verify the fit before you order.

    What does "Flo-Thru" mean?

    A flo-thru heater is a type of spa heater where water flows directly through the heater tube to be warmed. This design is common in most modern hot tubs and is highly efficient for maintaining water temperature.

    Can I install this heater myself?

    Many experienced DIY spa owners successfully replace their own heater assemblies. However, if you're unsure, we recommend consulting a qualified spa technician. Our team is also happy to walk you through the process — give us a call at 1-855-248-0777.

    Why does my replacement part have a letter suffix (U, C, E, or A)?

    Western Tub and Pool is an international e-tailer with warehouses across multiple regions. To help identify the part's origin, we add a suffix to the part number:

    • U = United States
    • C = Canada
    • E = Europe
    • A = Asia

    The same part may be stocked in multiple regional warehouses. Rest assured, all versions meet the same product specifications — the suffix simply reflects where the part was sourced and may affect shipping origin and delivery times.

    What if I'm not sure which part I need?

    No problem. Send us an email at fixmytub@gmail.com with your hot tub's make, model, serial number, and photos of the faulty part. Our team specializes in hard-to-find spa parts and will do our best to identify exactly what you need.

     

    Can't Find the Part You're Looking For?

    We specialize in hard-to-find hot tub and spa repair parts. If it's not in our catalogue, chances are we can still source it for you.

    Send us an email:fixmytub@gmail.com
    Call us: 1-855-248-0777
    Include: Photos, make and model of your hot tub, serial number, and any part numbers you have on hand.

     

    Order the Gecko S-Class 4.0kW Heater Today

    Don't let a broken heater keep you out of your hot tub. Shop and order at Western Tub and Pool — your trusted source for genuine spa replacement parts, shipped from regional warehouses across North America, Europe, and beyond.

    [Shop Our Full Parts Catalogue] | [Call 1-855-248-0777] | [Email fixmytub@gmail.com]

    Other Details

    Shipping , Returns & Exchanges We offer 30-day exchanges or store credit on eligible items. Please note that we do not provide refunds. Return Process: Customers are responsible for return shipping costs Items must be returned within 30 days of purchase Important Notes: All recycled items are final sale and cannot be returned or exchanged Items must be in original condition to qualify for exchange or store credit Electronic and electrical items should be installed by competent personnel . Warranty on these products when offered are scrutinized by the manufacturer and only approved by the manufacturer and deemed not to have been installed . As an international e-retailer and distributor, we work with manufacturers around the world. Please note that cross-border shipments may incur additional fees and tariffs imposed by your local government, which will be the responsibility of the package recipient .warehouses shipping from U.S.A have U suffix on them . Canada have a C suffix . Europe Have an E Suffix . Asia have an A Suffix.

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