Before your hot tub arrives: a pre-delivery checklist

A hot-tub installation can stall even when each contractor has finished their own job. The base may be ready while the unloading method is undecided, or a terrace may hide equipment before it has been commissioned. Use the agreed product drawing to coordinate delivery, support, services and handover in that order. Work through this checklist before the delivery date is fixed; the groundwork itself is covered step by step in our guide to preparing the base for a hot tub, and the route survey in our purchase and delivery process.

1. Lock the model and options before groundworks

Record final external dimensions, water volume, dry weight, heater and chimney, steps, cover/lifter and every pump or control box. Product photographs may show optional equipment and are not construction drawings. Ask for the support points and required clearances, including space to remove the largest serviceable component.

2. Measure the complete delivery route

Have the carrier or delivery contractor accept the measured route using the packed dimensions and permitted orientation. The delivery survey covers gate projections, tight turns, overhead obstructions, ground and unloading responsibilities. Reconfirm it after changes to fencing, landscaping or access.

3. Design the base for the filled product

Give the foundation designer the final water volume, dry weight, occupancy and equipment loads, support footprint and site conditions. Use the hot-tub base planning guide to organise those inputs. Neither a level-looking patio nor the outside diameter proves adequate support.

4. Give fill water and drained water separate routes

A nearby clean hose can be enough for filling if it is protected from contamination and backflow. Permanent plumbing is model- and site-specific. Drainage needs more thought: the full volume must not flood the base, neighbour, building, surface-water drain or watercourse. Keep the drain valve and hose connection reachable after steps and cladding are installed.

Local discharge rules and treatment levels matter. Decide the route before purchase, especially for a large tub, commercial property or site using a septic system.

5. Size electricity from the final equipment list

Where any equipment needs power, send its exact ratings and manuals to the electrician before the route is covered. The electrical information pack belongs alongside the landscape drawing and drainage plan. An optional pump, light or support heater can change the installation even when the main heat source remains wood.

6. Design service access as part of the finish

A professional installation looks complete but can still be opened. Mark pumps, filter, drain, electric heater, stove connections, lights and controls on the landscape drawing. A small inspection hatch is not enough if a pump cannot pass through it. Keep equipment ventilation and removal routes in the orientation specified by the manufacturer.

7. Plan safe everyday use

Provide slip-resistant access, stable steps and handholds, lighting and a cover storage position. Keep the wood-stove loading route separate from bathers and combustible storage. Plan privacy without trapping combustion gases or blocking equipment airflow. Consider neighbours, smoke, noise from pumps and the time of use.

8. What the heating type adds to the job

The heater you choose decides how much work happens before the first bath. A wood-fired hot tub needs the least infrastructure: a suitable base, a safe place to load the stove, the clearances in the manual and a chimney assembled exactly as described. That does not always mean no electricity. Filtration, a massage system, lights or a heat pump all need power, usually from a dedicated circuit and an earthed weatherproof socket. An electric hot tub arrives with its own control box, and the main cable from the house to that box must be sized for the full configuration, not just the heater. A hybrid tub needs both plans drawn together, so the stove clearances and the cable route do not compete for the same corner.

In England and Wales a new outdoor circuit is notifiable work under Part P of the Building Regulations, so use a registered electrician who can certify it. Rules differ in Scotland and Northern Ireland, so check locally before the trench is dug.

9. Chimney, smoke and the first fill

Plan where you will stand to load wood and remove ash, so the firing position never crosses the way in and out of the tub. Think about where the smoke will drift: a chimney next to a neighbour’s window or seating area causes friction however cleanly the stove burns.

Before the first fire, fill the tub completely and check that the heater and every connection are full of water and free of leaks. A water-heating stove must never be fired dry. With an external heater, check that cold water reaches the lower connection and that the warm return rises gently back into the tub, then heat slowly and watch the connections through the first session.

10. Which jobs you can do yourself

Clearing the site, measuring the access route, simple paving on well-prepared ground, assembling the chimney to the manual and the first fill are all reasonable owner jobs. Every electrical connection, any structural or raised deck, and groundwork on soft, sloping or wet ground need a professional. When you collect quotes, ask each contractor to list the same items so you are comparing like with like.

Final pre-delivery meeting

Hold the next stage when an essential handover is missing. Record the person accepting each stage rather than assuming the supplier, carrier and site contractor cover the same work.

For a recess, prove the service and removal space before the permanent surround is closed. Finish with the owner demonstrating the normal shutdown and locating the documents; a tidy installation is not a completed handover if those steps remain unclear.

Frequently asked questions