Balboa 3.0kW M7 Heater Assembly - 3kW M7 - Titanium
Balboa 3.0kW M7 Heater Assembly - 3kW M7 - Titanium is backordered and will ship as soon as it is back in stock.
Delivery and Shipping
Delivery and Shipping
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Genuine Balboa® 3.0kW M7 Heater Assembly (15" x 2") – Titanium Option (Plug-N-Click 2023+)
This is a genuine Balboa Instruments / Balboa Water Group M7 twin-sensor heater assembly (3.0kW), widely used across GS, VS, EL, BP, Dominator control systems and many other Balboa packs. It’s the most common style of spa heater used since the 2000s in a huge range of Australian spas.
Titanium vs Incoloy: Choose Titanium if you’re specifically after the upgraded corrosion-resistant heater option. Prefer standard? Use the Incoloy version here (or select the correct variant on this page if available).
✅ Genuine Balboa • ✅ Authorised Balboa Dealer & Repair Agent • ✅ Physical Stock • ✅ Fast Dispatch / Pickup
Counterfeit warning: Some online sellers use “real photos” and claim “genuine”, but supply counterfeit/non-genuine heaters or remove/alter parts. We supply genuine Balboa parts with correct components and support.
Stock Note
Note: If this Titanium version is out of stock, use the standard Incoloy version here.
Key Features
- Genuine Balboa M7 twin-sensor heater (no pressure switch required)
- 3.0kW element with 15" heater tube – common retrofit size
- Plug-N-Click system (2023+) for simpler, cleaner heater connections
- Shipped fast from Australia (NSW / VIC / QLD / WA) and pickup available
Important – Please Read (Plug-N-Click)
- As of 2023, Balboa M7 heaters commonly ship with an attached Balboa Plug-N-Click lead (see photos).
- If your control pack still uses the older copper heater connections, you will also need the Balboa Plug-N-Click Adaptor (see Add-Ons). This adaptor replaces the older copper connectors and makes future heater changes far easier.
- We have seen some sellers remove the Plug-N-Click leads. Not using the proper Plug-N-Click system can cause faults and may affect warranty assessment.
Specifications
- Power: 3.0kW
- Length: 381mm (15")
- Diameter: 57mm (2.25"), commonly referred to as “2"”
- System Type: Twin-sensor M7 (no pressure switch)
- Ports: 2 x sensor mounts (M7 sensors)
What’s included: heater tube + element + 2 x M7 temperature sensors (as shown/selected).
- Product appearance may vary slightly from images (Balboa revisions occur).
- Damage to heater studs is not covered by warranty (avoid over-tightening / incorrect wiring).
Compatibility
Suits a wide range of Balboa twin-sensor M7 systems, including many packs in the GS, GS501, GS501Z, GL, BP, BFBP, ES families and others. Commonly found in spas from brands/builders such as Spa Industries, Signature, Cyclone, Leisurite, Bullfrog, Designer, H2O, LA Spas, USA Spas, Spas Direct, and many more (varies by model/year).
Not sure? Send us photos of your existing heater, the wiring/terminals, and the control box label and we’ll help confirm the correct version (Plug-N-Click adaptor required or not) before you order.
Replaces Part Numbers
Replaces (and cross-references) many Balboa 3.0kW M7 heater part numbers including B-58118, B-55626, B-58301 and others. Also commonly referenced as:
53475, 53475-01, 53883, 53883-01, 53883-02, 53883-03, 53883-04, 53885, 53885-01, 53885-02, 53885-03, 53885-04, 53996, 54282, 54282-01, 54282-02, 54282-03, 54282-04, 54297, 54297-01, 54297-02, 54297-03, 54305, 54305-01, 54305-02, 54346, 54346-01, 54406, 54476, 54476-01, 54479, 54479-01, 54479-02, 54501, 54501-01, 54503, 54503-01, 54699, 54705, 54850, 54850-01, 55085, 55085-01, 55087, 55087-01, 55496, 55496-01, 55565, 55595, 55595-01, 55866, 55866-01, 55890, 56002, 56002-01, 56002-02, 56002-03, 56002-04, 56004, 56004-01, 56012, 56012-01, 56012-02, 56220, 56282, 56290, 56290-01, 58061, 58107, 58118, 58215, 58301, and more.
Why Buy From Us
- Authorised Balboa dealer & repair agent (support that drop shippers can’t provide)
- Physical stock in Australia for fast dispatch
- Real compatibility help so you don’t waste time and money ordering the wrong heater
- Genuine parts — not “photo correct, item 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 | ~60.2–60.5 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) | Class 9 IDº | Class 12 IDº | Class 18 IDº |
|---|---|---|---|---|---|
| 1/2" | 15 mm | ~21.2–21.5 mm | 18.3 mm | 17.8 mm | |
| 3/4" | 20 mm | ~26.6–26.9 mm | 23.7 mm | 22.4 mm | |
| 1" | 25 mm | ~33.4–33.7 mm | 30.5 mm | 29.8 mm | 28.1 mm |
| 32 mm | ~42.1–42.4 mm | 38.5 mm | 37.5 mm | 35.4 mm | |
| 1.5" | 40 mm | ~48.1–48.4 mm | 45.2 mm | 44.1 mm | 42.8 mm |
| 2" | 50 mm | ~60.2–60.5 mm | 55.2 mm | 53.7 mm | 50.5 mm |
| 65 mm | ~75.2–75.5 mm | 68.9 mm | 67.0 mm | 63.2 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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