When installing your Spa, you may choose between the following two options: install it yourself or let someone else do the job. A thorough preparation is the key to success in both cases. By tackling some of the work yourself, not only does it ensure a secure and correct installation of the Spa, but it can also be an excellent way to save on the installation costs.

You can for example strengthen the foundation beneath the tub, install an extra socket, etc. If you do not have the necessary knowledge, or if you do not have the time to install the Spa yourself, it is best to leave the installation of your Spa to experienced and professional installers. More details on how to install a Spa can be found below.

Prior to the installation of the Spa

Before installing your Spa or having it installed, it is important to determine and to deal with a certain number of things in advance:

  • Determine where you want to install your Spa (inside or outside).
  • Ensure that the foundation on which the Spa will rest is level and solid.
  • Make sure that your electrical connection is sufficient and secure.
  • Make sure you have a convenient water source at your disposal for filling.

Installing a Spa inside

Generally a Spa is designed for outdoor use. It is however also possible to install a Spa inside. The following conditions have to be met:

There has to be enough space to transport the Spa inside. The dimensions of a Spa do not always allow this (the average size of a Spa is 220 x 215 x 95 cm). A Spa cannot be dismantled and does not fit through a standard doorway.

The hot tubs, when full, can weigh between 1000 and 2500 kg, depending on the model. For this reason, you will need a firm and level foundation on which the hot tub can rest.

Make sure there is enough ventilation, which is an additional key point of attention. Using a Spa creates a lot of humidity, so you are going to need a good ventilation system to get the humidity out of the room.

Installing a Spa outside

Spas are almost always installed outside. This does not mean that you can only use your hot tub during the warmer months. The Spas from Sunspa are not seasonal products, and can be used all year round. Research has even shown that the therapeutic effects of a Spa are greatest when the outside temperature is considerably lower than the temperature of the water. When installing the hot tub outside, you need to take the following into consideration:

Place the Spa close to the house: proximity of a hot tub to the house will dictate how much the spa gets used. When it is cold outside, people do not typically want to walk a longer distance in order to get into the hot tub.

It is always better not to install the Spa under trees: leaves and birds can give you additional maintenance work.

Installing a windshield or a shed considerably reduces the exposure of your hot tub to weather and wind and therefore allows for a decrease in exploitation and maintenance costs, but keep in mind that benefiting from a nice view makes the bathing experience more pleasant and more relaxing. Also, take the desired privacy into consideration.

Built-in Spas

If you want to install your Spa into the ground or into a permanent setting (for example into a cement patio), it is important to make sure that access to the hot tub’s equipment panel is not blocked. This is important as you will occasionally have to maintain and service the Spa. Every Spa has special doors, hatches and/or panels to make maintenance and repairs possible: make sure that they can be reached easily.


Keep the dimensions of a Spa (the average dimensions are 220 x 215 x 95 cm) in mind when considering where to install a Spa. As mentioned before, a Spa cannot be dismantled and does not fit through a standard doorway. If the installation site is easily accessible and if the garden-doors and/or other doors are wide enough, installing a Spa will be quite straightforward.

It will be entirely different if the installation site is not easily accessible. If the Spa has to be lifted over the house, for example, you will have to take the reach of the crane into account (a horizontal distance of 30 meters, between the crane and the installation site). Use a solid tractor for slightly longer distances. Depending on the model, an empty Spa can weigh between 2OO and 350 kg.

The foundation

No matter where you choose to position your hot tub, the site must be able to support the combined weight of the tub, the water, and the people in it. The base for your hot tub should not only be strong, but also plain, level, and equalized.

Avoid alterations or movements of the foundation when installing the Spa. A tiled floor may suffice, if properly placed. A wooden deck is not ideal, because it can amplify the vibrations of the hot tub. Concrete provides the strongest foundation: if you choose to pour a concrete slab, make it at least 10 centimeters thick. Also pay close attention to the surface around the Spa: it should not become too slippery when water spills over the edge of the Spa.

Electrical wiring

For your own safety and to prevent any overload on your grid, your spa should always be connected to two power generators who have to be grounded separately and must include fuses of 16 or 20 amp, or one generator of 25 amp. A spa may sometimes require a lot of power. Consider, for example, what happens when you simultaneously switch on all the jets, the waterfall, the ozonator, the air blower and heating.

The power requirements can vary from one model to another. If you want to connect the Spa yourself to your power grid, we will provide you with all necessary information. For bigger Spas, it is recommended to work with power current. You can find more info here.

The power cable should run directly from the fuse box to the future location of the Spa (you should leave at least 5 meters of spare cable to insert this cable in one of the sides/flanks of the Spa or hottub).  It is highly recommended to install a waterproof switch 2 meters from the hot tub to make sure the power can be switched of on-site at all times.

Please note that the power supply must always have a neutral and ground fault of 0.03 (fast ground fault). In some municipalities (mainly in Belgium) the grid does not meet these requirements. Find out at your local electrical supplier if the grid meets the power requirements for your spa.

Caution: be very careful when working with electricity, do not take unnecessary risks! If you do not have the necessary knowledge, let a qualified electrician or one of our own installers do the work.