A swim spa rarely fails at the point of purchase. It fails at the point of installation, when a delivery arrives that cannot pass the gate, a deck turns out not to carry the load, or the electrician discovers there is no suitably rated supply where the cabinet is going to sit. A buying checklist exists to move those surprises out of the quote stage and into a decision you can actually sign off on. Below is the sequence we work through with buyers specifying the Outdoor Swim Spa WS-125AⅢ-U, a 5500 × 2300 × 1350 mm shell in our configurable outdoor swim and hydrotherapy range. The same eight items apply to any model you are comparing, including the longer swim models in the Swimming Pools and Swim Spas category.
1. Site access and the delivery route
Start with the route, not the water. Write down the width and height of every gate, side passage and turning point between the kerb and the final position, and check whether a crane or a mule is needed. The 5500 mm body length is the number that decides this: a unit that fits the terrace can still be refused at a 900 mm side gate. Record ground conditions too — gravel, timber deck or concrete slab changes what the base preparation costs and who does it.
On the supply side, our scope runs from design consultation through production to door-to-door delivery, with the shipping paperwork, packaging and container loading arranged as part of the order. Confirm with us in writing which leg of the journey you are taking responsibility for, and who is receiving the container at the other end.
2. Structural support and base preparation
A filled shell of this footprint carries a very different load when it is full than when it is empty, and an above-ground timber deck is the most common place this gets missed. Have a local engineer or builder certify that the slab or deck can carry a fully flooded spa at the intended position, and get that sign-off before the shell is manufactured. Specify who prepares the base — usually it is your local contractor, working to the base drawing we provide — and agree the level and tolerance requirements before pouring.
3. Electrical supply and protection
The catalog figure for WS-125AⅢ-U is 11.85 kW total power, and the same page carries four water pumps and one filter pump. Treat that figure as a starting point for a conversation with a licensed electrician rather than as the final answer: supply phase, circuit rating, cable run length, isolation location and protective-device specification all depend on your installation and on local wiring rules. Confirm the electrical requirements of the configuration you are actually ordering, because options change the load. Anything an electrical inspection in your area requires should be settled before the unit lands, not on installation day.
4. Equipment included in the quoted configuration
Print the quotation and tick off the specification line by line. For this model the catalog lists one control system, four water pumps, one filter pump, 23 jets in total, and one LED light, with water jets, LED lighting and ozone shown as the standard feature set. Then check what is not shown. The Outdoor Swim Spa WS-125AⅢ is the version of this shell with a swim training system listed; WS-125AⅢ-U does not carry that line in the catalog. If the point of the purchase is daily lap swimming against a current, that single line decides whether you are looking at the right model.
Ask for the specification sheet of the exact configuration, not the brochure range. Equipment counts and options differ between models, and a count quoted from a neighbouring model is the most frequent source of a disappointed buyer.
5. Options and upgrades priced in the quote
The catalog options for this range include control systems, UV sterilisation, water pumps, heat pumps, sand filtration, insulation and steps. Each one has a lead time and a price, and retrofitting after delivery is usually dearer than specifying it at order. Decide now whether you want year-round use, which is where a heat pump and insulation become worth pricing, and whether you want steps built to the shell or a local solution afterwards. Availability and compatibility vary by model, so we confirm the combination you have chosen before production rather than at shipment.
6. Water treatment and day-to-day running
Ozone is shown as a feature on this model, and ozone is a sanitising aid rather than a complete programme on its own. Ask your supplier what the intended maintenance routine is — filtration run time, sanitiser dosing, water testing frequency and how the filter pump duty relates to your usage — and check what consumables cost and how you ｒｅｐｌａｃｅ them locally. A small weekly routine agreed with us before handover saves the kind of water-quality problem that stops a spa being used.
7. Drainage, consent and local rules
Drainage planning and any building or planning consent depend on where the spa sits and the rules that apply to that property. Requirements differ widely by region and by whether the installation is in-ground, semi-recessed or fully above ground, and no overseas supplier can tell you what your local authority expects. Put this on your checklist as a task for your local contractor or certifier, give them the shell dimensions and the base drawing, and get written confirmation that no consent is required before ordering.
8. After-sales, spares and documentation
Before you sign, ask what happens three years from now: which components are covered and on what terms, which spare parts you can order for this configuration, and what documentation you receive — wiring diagram, parts list and commissioning notes for whoever services the unit locally. We cover installation and after-sales support as part of the project scope, and we will confirm the warranty terms that apply to your specific configuration in writing. Get the parts list into your own files at handover; it is the document that makes a future repair a phone call rather than a search.
What a complete checklist is really for
Run the eight items in order and most of the cost overruns disappear, because each one either gets signed off or gets flagged while there is still time to change the specification. The two that decide a project are the ones buyers tend to leave last: the electrical provision and the structural sign-off. Move them to the top of your list.
Send us the site photographs, the gate and access measurements and the intended location, and we will confirm which model in the swim spa range suits the space, what the chosen configuration includes, and what your local contractor needs to prepare — before you commit the order.