Do you want to use your portable hot tub indoors or outdoors? Your answer to this question will determine the size of the hot tub you should purchase. The spa size will, of course, depend mostly on the available space you have. Do you want an inexpensive inflatable spa or would you rather buy a portable but non-inflatable spa which is more expensive?
After determining the size of the tub, the next thing is to think deeper about the area where you want to place the spa. The area you decided on in step 1 must fulfill the following conditions:
Any hot tub you intend to buy must have a means whereby you can adjust the heat of the tub. This adjustment knob can either be a manual one or an automatic one. So which one do you prefer?
Be sure that your power outlet is capable of delivering needed amperage/watts. Think about lighting your hot tub. Some come with an inbuilt mood light, but most do not. There are times when you just want to soak yourself in the tub and also get a few minutes of reading done. These fancy lights come in handy especially if you want to have a soak in the night. Apart from making use of the light for reading, you may buy a colored led lights for creating pleasant ambient atmosphere lighting.
You definitely want a tub whose parts are readily available in the market. It would not be good if you have to throw away your whole hot tub in a case when heater breaks down. Just be sure to buy a hot tub from a well-known brand.
As with all products, the tub you intend to buy must also come with a warranty. A warranty of 6 months to one year is not out of this world. Also, keep an eye on the reviews for the particular manufacturer to know whether or not they keep their warranties – if they do not, simply look for another manufacturer. A warranty assures you that if anything goes wrong within the stipulated period, you are assured that it is going to get fixed.