Genuine Balboa 3.0kW M7 BP/GS/VS/EL Heater Assembly - Updated Version - 3kW M7
Genuine Balboa 3.0kW M7 BP/GS/VS/EL Heater Assembly - Updated Version - 3kW M7 - is backordered and will ship as soon as it is back in stock.
Don't Guess - Ask Us!
Don't Guess - Ask Us!
Not sure if it’s the right part? Send us a message and a photo of what you’re replacing, or what you need, and we’ll help make sure you get the right part the first time.
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Delivery and Shipping
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Genuine Balboa 3.0kW M7 BP/GS/VS/EL Heater Assembly - Updated Version - 3kW M7 - is backordered and will ship as soon as it is back in stock.
Genuine Balboa® 3.0kW M7 Heater Assembly (15" x 2") – 2024+ Plug-N-Click Version
If you’re chasing a real Balboa® heater (not a look-alike), this is it. This listing is for the genuine 2024+ Balboa M7 3.0kW Plug-N-Click heater assembly that supersedes and retrofits older Balboa M7 3.0kW heaters — including the older style that used L-shaped copper straps/connectors (see images).
Counterfeit warning: We’re seeing more listings using real photos but supplying counterfeit / non-genuine heaters. These are genuine Balboa® parts supplied by an authorised Balboa dealer & repair agent — so you get correct parts, correct advice, and warranty support.
✅ Physical Stock (Australia) • Fast Dispatch • Pickup Available
We are not a drop shipper. We hold physical stock and ship from Vic, NSW, QLD, WA.
Why the 2024+ Plug-N-Click Version Matters
Balboa’s updated Plug-N-Click system is designed to make installation faster, cleaner, and safer, and makes future servicing easier.
- Direct replacement for older Balboa M7 3.0kW 15" x 2" heater assemblies
- Supersedes copper strap / L-connector style (retrofit capable)
- Improves serviceability: easier disconnect/reconnect during troubleshooting
- Helps reduce installation mistakes that can lead to overheating at terminals
Quick Compatibility Checklist (Read Before Buying)
- Balboa packs commonly supported: GS / VS / EL / BP / Dominator / GL / ES / BFBP (and other Balboa M7 twin-sensor systems)
- M7 / twin-sensor system: your heater uses two temperature sensors (not a pressure switch)
- Size: 15" (381mm) long heater tube
- Plumbing: commonly referred to as 2" heater plumbing (tube OD approx 57mm / 2.25")
- Power: 3.0kW heater element
Not sure? Message us photos of your control box label, old heater, and wiring — we’ll help confirm compatibility before you order.
Choose Your Kit
Option A — Full Retrofit Kit (recommended if you DO NOT already have Plug-N-Click at the control pack)
- Balboa M7 3.0kW 15" heater assembly (genuine)
- 2 x genuine Balboa M7 temperature sensors (12/14" leads)
- Plug-N-Click lead
- Plug-N-Click adaptor (retrofits/ replaces the older L-shaped copper connectors)
- Heater gasket seals
Option B — Heater Only (with Half Loom)
- For systems already using the Plug-N-Click adaptor
- Includes heater, 2 x M7 sensors, and Plug-N-Click lead
Specifications
- Type: Balboa M7 heater assembly (twin sensor ports)
- Power: 3.0kW
- Tube length: 381mm (15")
- Tube diameter: 57mm (2.25") commonly referred to as “2"”
- Sensor ports: 2 x M7 sensor mounts (twin sensor system)
Installation Notes (Important)
- All electrical connections must be properly tightened. Loose connections can overheat and cause damage (not covered by warranty).
- Do not remove or modify the Plug-N-Click loom. Modified/altered looms can create faults and may void warranty.
- Professional installation is recommended. If you’re not qualified, use a licensed technician/electrician.
Common Spa Brand Usage
Used widely across many spa builds (varies by model/year), including:
- Spa Industries, Signature, Cyclone, Leisurite, Bullfrog, Designer Spas, H2O, LA Spas, USA Spas, Spas Direct, and many others
Replaces These Part Numbers
53475, 53883, 53885, 53996, 54282, 54297, 54305, 54346, 54406, 54476, 54479, 54501, 54503, 54699, 54705, 54850, 55085, 55087, 55496, 55565, 55595, 55626, 55866, 55890, 56002, 56004, 56012, 56220, 56282, 56290, 58061, 58107, 58118, 58118KIT1, 58215, 58300, 58301, and others.
Why Buy From Us (Not a Drop Shipper)
- Physical stock in Australia (no “maybe it’ll arrive” overseas fulfilment)
- Authorised Balboa dealer & repair agent
- Real technical help if you need compatibility confirmation
- Genuine parts — not “photo correct, product different” surprises
In plumbing, named sizes are not the actual measurements. A pipe called “50mm” or “2"” does not measure 50 mm across. Instead, it follows nominal sizing, an internationally-standardised naming system.
Use the Outside Diameter (OD) to check your pipe against fittings. Below is a quick reference for common spa & pool pipe sizes:
| Imperial Name | Metric Name | Pipe Diameter (OD) |
|---|---|---|
| 1" | 25 mm | ~33.4–33.7 mm |
| 1.5" | 40 mm | ~48.1–48.4 mm |
| 2" | 50 mm | ~60.2–60.8 mm |
| 2.5" | 65 mm | ~75.2–75.5 mm |
These are nominal sizes and are designed to fit matching fittings — not to measure exactly what their name suggests.
Understanding Plumbing Sizes & Nominal Measurements
Plumbing sizes can be confusing. PVC and many other pipe systems use nominal sizes—the size is a name, not the exact measured dimension. This convention is used across most pool and spa systems so that pipes and fittings remain compatible.
Why pipe sizes don’t match the measurements
The Nominal Pipe Size (NPS) system standardises pipe dimensions so that pipes, fittings, valves, and accessories interoperate. Plumbers work with these nominal names every day, but DIYers can be tripped up if they try to match by a tape-measure alone.
How to Measure Pipe Correctly
-
Pipe size is identified by:
- The pipe’s Outside Diameter (OD).
- The fitting’s Inside Diameter (ID) (socket opening).
- Pipe Class / Schedule (e.g., Class 9, 12, 18 or Sch 40) relates to wall thickness and therefore the Internal Diameter (ID) and pressure rating.
- The outside diameter of a fitting is not useful (wall thickness varies by manufacturer).
PVC Pressure Pipe AS/NZ 1477 Dimensions1:
Common nominal sizes with typical outside diameters and indicative inside diameters by class.
| Imperial Name | Metric Name | Outside Diameter (OD) |
|---|---|---|
| 1/2" | 15 mm | ~21.2–21.5 mm |
| 3/4" | 20 mm | ~26.6–26.9 mm |
| 1" | 25 mm | ~33.4–33.7 mm |
| 32 mm | ~42.1–42.4 mm | |
| 1.5" | 40 mm | ~48.1–48.4 mm |
| 2" | 50 mm | ~60.2–60.8 mm |
| 65 mm | ~75.2–75.5 mm | |
| 2.5" | ~73 mm |
- º Internal diameters vary slightly by manufacturer and class.
- 1 Not all pool/spa fittings match these dimensions exactly. Some do not follow Australian or international standards. Chinese spas may use proprietary fittings.
Hose & Tube Dimensions
Common flexible hose sizes used in pool/spa systems (approximate IDs).
| Imperial Name | Metric Name | Inside Diameter (ID) |
|---|---|---|
| 3/8" | 9–10 mm | ~9 mm |
| 3/4" | 19 mm | ~19 mm |
BSP – British Standard Pipe Thread Sizes
BSP thread names are also nominal. The thread OD will not equal the nominal name.
| BSP Thread Size Naming | Outside Diameter (mm / inch) | TPI |
|---|---|---|
| 1/16" BSP | 7.7 mm / 0.304" | 28 |
| 1/8" BSP | 9.7 mm / 0.383" | 28 |
| 1/4" BSP | 13.16 mm / 0.518" | 19 |
| 3/8" BSP | 16.66 mm / 0.656" | 19 |
| 1/2" BSP / 15 mm | 20.99 mm / 0.825" | 14 |
| 5/8" BSP | 22.99 mm / 0.902" | 14 |
| 3/4" BSP / 20 mm | 26.44 mm / 1.041" | 14 |
| 7/8" BSP | 30.20 mm / 1.189" | 14 |
| 1" BSP / 25 mm | 33.25 mm / 1.309" | 11 |
| 1-1/4" BSP | 41.91 mm / 1.650" | 11 |
| 1-1/2" BSP / 40 mm | 47.80 mm / 1.882" | 11 |
| 2" BSP / 50 mm | 59.61 mm / 2.347" | 11 |
| 2-1/4" BSP | 65.71 mm / 2.587" | 11 |
| 2-1/2" BSP | 75.18 mm / 2.960" | 11 |
| 3" BSP | 87.88 mm / 3.460" | 11 |
| 4" BSP | 113.03 mm / 4.450" | 11 |
| 5" BSP | 138.43 mm / 5.450" | 11 |
| 6" BSP | 163.83 mm / 6.450" | 11 |
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