Can You Install a Hot Tub Indoors?

Install a Hot Tub Indoors
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Investing in a hot tub increases the value of your property. It also offers many health benefits such as stress relief, improved sleep, and weight loss. Most people prefer outdoor installation, but can you install a hot tub indoors?

You can install a hot tub indoors. However, there are factors you must consider such as ventilation, flooring, drainage, and cost. The installation process is quite complicated compared to outdoor spas. Therefore, careful planning is required.

In this article, we will discuss the factors to consider when choosing an indoor hot tub. We will also look at indoor hot tubs pros and cons. This will help you decide whether or not to get one for your home.

Things to Consider Before Installing an Indoor Hot Tub

Here are some things to check if you want a safe installation:


Warm water creates condensation and humidity. So, when installing a tub inside your home, you need to figure out how to reduce the moisture to avoid damaging your walls, floorings, and ceilings. Ventilation is also essential to ensure that the filtration system functions properly.

For a strong capacity of air inflow, install the spa in an area with plenty of windows or a door. You can also purchase a dehumidifier, but in most cases, vent fans will do the magic. Choose a model that is quiet and won’t rust.


When a spa is filled with water, it could weigh up to 5000 lbs, including the weight of the bathers. This may take a toll on your flooring if it does not have adequate structural support. You need to contact an engineer who will ensure the area is restructured to support the spa.

Bathers usually leave the spa with some water dripping onto the floor. So, you don’t want them slipping as soon as they get out of the tub. A carpet or wood flooring will get wet and attract mildew over time, making it a bad choice.

You should consider installing slip-resistant tiles or any material that allows drainage and good traction when wet. Do not forget to provide towels for bathers to reduce the amount of water that gets to the floor.


Since the tub will be indoors, you need to create a channel for periodic draining. A good water care routine involves draining every three to six months. The drainage should be installed in such a way that it does not affect the building’s foundation or the spot where the spa is located.

Consider installing the tub in a location that can accommodate a hose connecting to the drain. You may want to watch this video to learn how to drain and refill your spa.


Indoor hot tubs cost between $5,000 and $25,000. However, this price range depends on certain factors such as:

  • The size of the tub
  • Design
  • Accessories
  • Quality of the material
  • Location
  • Cost of installation
  • Cost of remodeling the space

Pros of Indoor Hot Tubs

Below are some benefits of installing a spa inside your home.

No More Snooping Neighbors

When your tub is outside, you can’t have privacy. Your neighbors may overlook your fence, especially if they are on the upper floor. But with an indoor spa, you have nothing to worry about. No one will walk into your home uninvited.

Enjoy a Relaxing Retreat

Spas, whether inside or outside the home offer convenience as you can access all you want without driving miles away. It even gets better with an indoor spa. You don’t have to apply sunscreen to access the tub. Simply get in and soak away the day’s stress. You can also install lights in the spa and enjoy a retreat at night.

Shield from the Elements

Having an indoor spa provides shelter from the elements. You don’t have to bother about the weather condition, whether it is cold or warm; you can control the temperature of your room. Also, your tub will be safe from rain, wind, and dirt, thereby, prolonging its lifespan and reducing the cost of maintenance.

Cons of Installing Indoor Hot Tubs

Below are some drawbacks of installing a spa in your home.


This is usually a big challenge for homeowners because the spa water is warm and evaporates quickly. This causes condensation which may affect the building if neglected. To prevent the growth of mold due to excess moisture, ensure the room has adequate ventilation.

You can also install waterproof drywall or waterproof the existing one. You can check out to get more ventilation tips.

High Cost of Installation

Hot tubs are expensive, but the costs quickly add up with indoor tubs. You need to get a suitable spot for the installation. A contractor still needs to survey the spot to ensure it suits the building code for such installations.

Additionally, the contractor would remodel the floor if it is not concrete and non-slip. Some plumbing and electrical works are required for filling, draining, and powering the tub.


If you have been dreaming of having an oasis in your home, you can install an indoor hot tub. It offers benefits such as privacy, convenience, and low maintenance. You only need some planning to safely install the spa.

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