Icelandic Hot Tub designs--very simple, inexpensive, environmentally friendly and AMAZING!!!

duganderson

Well-known member
Jan 26, 2021
183
Minneapolis
I was just on a vacation in Iceland. I feel very blessed to have visited this AMAZING place and they have the coolest hot tubs (that they call Hot Pots) throughout the country.

The first Hot Pot we came across (1st photo below) was at a rural bed and breakfast. At this location (and I think throughout the country), they pay for hot water delivered to there house that comes from the naturally heated water underground due to the extensive geothermal activity found throughout Iceland. Apparently, this heated water is constantly running into their house so any unused water at any time flows out of the house to a drain location in the yard via a hose or pipe and the water is just absorbed back into the land. This property used the excess heated water (113 degrees F.) to flow directly to their Hot Pot via the black hose in the photo. The Hot Pot was built out of wood into the ground with square rubber pieces on the floor. As the water constantly flowed in, any excess water will overflow the wood cut out in the top of the tub (or the excess water pipe in the photo) and was returned into the land. They were planning to use an adjustable cold water line from the house to regulate the temperature when they used it if it was too hot (113 F is too hot for me). This Hot Pot had no chemicals added because the water was constantly being added. The owner reported that they would need to add sanitation and have it inspected if they officially marketed their property as having a Hot Pot. In the photo, the tub is not full yet because they had just finished building it and just added the fill hose to fill it. I wish I would have stayed another 20 minutes or so to join the owner as the first users of this Hot Pot.

Other Hot Pots, like in the 2nd photo looked like typical above ground hot tubs but all of the jets were plugged. They had one hot water inlet coming from the excess naturally heater water that constantly flowed from the property and one drain in the tub that regulated the water level. This drain was fed to the location where the water drained on the property. On this tub, there was a cold water line that fed into the hot water line that was regulated to turn on and off via a thermostat based on the temp of the water and the temp that the thermostat was set at by the owner. This was at a larger hotel so they may have been adding some sort of chlorine or something to sanitize the water.

The ultimate Hot Pots, however, were the completely natural ones found throughout the island. The third photo is a natural stream in the hills that you can hike to that is naturally fed by a naturally heated underground water source. The water temp on this river varied from approximately 125 degrees F. to 99 decrees F. or less as small cold water streams fed into the heated river. AMAZING!!!

There are some cool resources for Iceland's Hot Pots such as Iceland's best hot pots and pools – Outdoor Swimming Society

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Nice! The original hot tub!
Similar spots can be found closer to home, with some pretty knockout scenery as well.
Near Bishop CA (where my wife is from) there is a place known locally as "hot ditch". A hot spring pops up in mountainous desert and flows down the slope into Owens Valley, with many natural and stacked-rock pools on the way down. The farther up the slope, the hotter the water in the pools, most of which are lined with stone seats and edges from countless people over the years making it comfy. Amazing place. Dozens of natural hot tubs surrounded by high desert surrounded by the Sierra Nevada mountains. Pass me a beer.
 
Similar spots can be found closer to home, with some pretty knockout scenery as well.
Near Bishop CA (where my wife is from) there is a place known locally as "hot ditch". A hot spring pops up in mountainous desert and flows down the slope into Owens Valley, with many natural and stacked-rock pools on the way down. The farther up the slope, the hotter the water in the pools, most of which are lined with stone seats and edges from countless people over the years making it comfy. Amazing place. Dozens of natural hot tubs surrounded by high desert surrounded by the Sierra Nevada mountains. Pass me a beer.

Wow......it would be awesome to check these out too.
 
It would be awesome to go to Iceland (and I'm sure it was), but I don't see that in the cards for me. I have to make due with what's fairly close, and I lived out that way for a few years. Your picture reminded me of hot-ditch, except for all the green around it, of course.
I did some work at a resort in Gardnerville NV that had several pools of various sizes fed by the on-site hot spring. That was pretty cool to see too. It might still be open, I'll see if I can find it on google as I have long since forgotten the name. It's right by Tahoe, and a great getaway location any time of year between the lake, casinos, and ski resorts.
 
I stayed at the Grimsborgir Hotel in Iceland about 2 years ago. It is actually apartment units, not a high rise hotel (excellent place BTW if anybody is planning a trip)

Each unit has an outdoor hot tub. The hot tubs are on timers. Every evening they automatically fill with HOT water from the geothermal sources and then they automatically drain sometime in the early morning. They were full when we got back from doing the tourist stuff around 8 - 9 PM and they were empty at 7 AM. If you wanted to use the hot tub sometime during the day, you called the front desk, and they would trigger it and it would start filling up.

Much of the country has geothermal water service. Just like we get gas, electric, and water. They get hot water service delivered to their homes, for heating. The apartment we were in was all in floor, hot water, radiant heating. Really nice system.

There are also natural hot spas where people built retaining walls around hot springs to create spas, and have put up snack bars etc. Even though there is a constant in and outflow of water, there is no sanitizer. Showering is very important before getting into the spas, and they take it very seriously. Also like many European countries, they have no hang ups about nudity. There are shower rooms, and you are required to shower naked. Some of the bigger facilities like Blue Lagoon have 2 or 3 stalls for the shy people to use, but the smaller ones are just big rooms with multiple showerheads. Blue Lagoon is pretty cool (and a bit of a tourist trap) because the water in it is actually milky blue because of all the dissolved silica. It's supposed to be good for your skin, but I don't know about that.
 
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