Service parts · 01
Heating Elements and Heater Assemblies
The part that fails most often in a hot tub, and the part most often bought twice. We quote the element, the housing and the seal as one line so the repair closes in a single shipment.
What an element quote must pin down.
Heating parts are split by where they sit, because the deciding dimensions are different in each case.
Spa heater element
Incoloy-sheath element for the heater tube, supplied in the common tube lengths and diameters, straight or tee style, with the gasket and flange that match the housing.
Heater assembly with housing
Element, tube, sensor well and mounting flange supplied as one unit where the housing is also being replaced.
Sauna heating element
Open-coil or sheathed elements for wall-mounted and floor-standing sauna heaters, matched to the heater model and the room volume.
Element gasket and flange kit
The seal, flange and fixings that go with the element — the item most often forgotten when only the element is ordered.
Reference data
Sheath, thread and flange in one line.
Two tables sit behind a heating quotation: the values that decide whether the part fits, and the references customers already buy against. Send whichever you have; the rest is checked with you.
| Field | Typical options and what we confirm |
|---|---|
| Sheath material | Options: Incoloy 800 / 840, titanium. Corrosion and heat behaviour in spa or sauna water confirmed per enquiry. |
| Tube diameter and length | Typical: 1.5 in × 5.5 in, 1.5 in × 7 in and 2.0 in × 7 in (tube diameter × length). Whether the element enters the housing and seats on the flange is confirmed per enquiry. |
| Thread or flange | How the element is fixed into the heater body |
| Voltage and frequency | Typical: 120 V and 240 V, with 230 V for EU supply. Frequency confirmed per enquiry. |
| Wattage and watt density | Quoted range: 1.0 – 5.5 kW. Watt density and surface loading confirmed per enquiry. |
| Sensor well | Whether the thermistor or high-limit probe sits in the element |
| Lead length and termination | Reach to the control box and the connector used |
| Certification route | Which approval the destination market requires — approval arranged per order for the destination market |
| Gasket and flange | Seal between element and housing (Supplied with the element; material confirmed per enquiry) |
| Reference system | Why it helps |
|---|---|
| Element reference | The number stamped on the element or heater body |
| Heater model | Places the element in a known housing and sensor arrangement |
| Spa brand and model | Narrows the housing family and the control that drives it |
| Rating plate | Voltage, wattage and amperage as printed by the maker |
| Old gasket | Confirms the sealing face even when the element is unmarked |
Values are confirmed per enquiry rather than published as a fixed list: one heater family is built in several voltages, wattages and sensor arrangements. Brand and model names are used for cross-reference only.
What to read off the old element.
A photo set that answers the four questions we cannot guess: length, thread, wattage and supply.
- Clear photo of the element next to a rule, showing the thread and the lead end
- Photo of the heater body or rating plate with the model number legible
- Voltage, frequency and phase at the installation
- Whether a sensor or high-limit probe sits inside the element
- The old gasket, photographed flat
- Destination market and the certification it requires
Where we stop.
We supply heating elements, housings and the seals around them. We do not supply control boards, complete topside panels or spa packs — those sit inside a closed electronics ecosystem, and a copy of them is neither reliable nor lawful to sell.
Service parts only
Elements, housings, gaskets, sensor wells and the fittings that join them.
No board-level electronics
Control boards, topside panels and complete packs are out of scope, by decision.
Certification is per order
The approval route follows the destination market; documents travel with the shipment.
Questions about heating elements.
Can you match an element from a photo alone?
A photo with a rule across the thread and the sheath length answers most of it; the wattage and voltage still need the rating plate or the heater label.
Is wattage the only thing that matters?
No. Sheath length, thread, watt density and whether a sensor sits inside the element all decide whether it will run safely in that housing.
Do you supply the gasket with the element?
Yes, where the sealing face is known. Sending the old gasket photo avoids a second shipment.
Which certifications can be arranged?
The same routes Chinese element makers use for these markets: Approval is arranged per order for the destination market, and the documents ship with the goods.
Can a sauna element replace a spa element?
No. The sheath, the fixation and the surrounding airflow are different; sauna elements are quoted against the sauna heater model.
Do you sell to repair shops as well as spa makers?
Yes. Single units and repair-shop quantities are both quoted; the trade-off is carriage, not a minimum order.
Related reading: reading the old element before you order.
Parts that sit around the element.
The parts that usually ship with a heating repair.
Send the element detail for a checked reply.
One enquiry covers the element, the fittings it needs and the market it ships to. Replies come from the person who checks the specification, not an autoresponder.