Are All Hot Tubs the Same?
Monday, October 18th, 2010 at
3:11 am
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John E Lewis asked:
That is the 64 million dollar question – of course they are not.
Many Hot Tubs, particularly the cheap imports form the east, are constructed using the cheapest possible methods reducing the cost as opposed to constructing to a much higher standard of quality. Often made by unskilled workers who are unsupervised working in rather harsh conditions of a slave factory.
Like wise this penny pinching cost cutting or simply trying to make a Hot Tub from the cheapest way can also apply to those who are making the largest numbers of spas in the world.
Many Hot Tub Jacuzzis are made using a fully foamed approach some times known as the “fully foamed” or “foam filling” system this is, very much, an out of date production method but is still in use by many makers as it is one of the cheapest forms of construction.
In this cheaper system, the shell of the unit is made from thinner sheets of acrylic or ABS plastic the Tub is then plumbed and piped with all the required pipes etc.
Then the cabinet that surrounds the Hot Tub Shell is injected full of expanding foam to give the weaker shell much needed support.
This is a very much cheaper method of construction as it means that the manufacturer is able to use cheap foam, (instead of fibreglass), to support the shell, rather than building a shell with sufficient strength in the first place!
There are various disadvantages of this system of construction:-
1) Sprayed in polyurethane foam degrades over time, such that there is a decrease in the insulating value.
2) The settling and expansion/contraction of the foam can actually cause leaks in the plumbing.
3) Lastly and most importantly you cannot of course access any of the internal parts of the Hot Tub in the case service is required. Effectively then the most serious downside to this cheaper method of construction is that there is an almost total inability of serviceability during the lifetime of the spa. Not only is the plumbing but also the jet fittings are buried in to the expanded foam. This of course means that, leak detection is more or less impossible with out de-constructing the Hot Tub and removing substantial amounts of foam…
If a fully foamed spa should leak from the rear of a jet fitting then that water seepage may not become apparent until the foam has become extremely wet and soaked through.. The most modern productions methods would be to use some foam to support the pipe work but not to indiscriminately blast, the spa cabinet full of polyurethane as there is no proven benefit to this practice and it actually causes dealers and customers a severe service/access headache.
I have heard it said that some manufacturers fully foam their spas so as to keep the noise of the pipes down – must be a badly designed tub if its that bad.
This is the same as building the electrics and heating systems in a car or in a house in to sold foam. Simply because you have been told by a sales person it will keep the noise down and in any event it will not need servicing . well its not something I would do or believe nut many hot tub manufacturers would have you believe ot to be true.
Is your heating ,plumbing and electrical systems at home, hidden in solid foam because you’ve been told it would never need servicing? That does not sound like a good idea to me ? Many Hot Tub Jacuzzi manufacturers would have you believe that it was! Or perhaps have the bonnet of the car stuck down with cement so you couldn’t check the oil or water would that be a good idea?
So, my best advice, is that one should only buy a product that is well built by an American or Western internationally recognized producer of Hot Tubs and then there is every chance that the product will last and last and give very many years of faultless performance.
The reason is simple in that the internationally recognized producer backs his products with a real guarantee so if it has a fault it falls back on the manufacturer not on you. As you can imagine these manufacturers have had decades of experience and they build them with the proper parts and components so it will not fail and it is for that reason and that reason alone that they are prepared to provide a long life guarantee.
How would you like to own your own Resort Quality Hot Tub, Spa or Swim Spa for pennies on the Dollar?
That is the 64 million dollar question – of course they are not.
Many Hot Tubs, particularly the cheap imports form the east, are constructed using the cheapest possible methods reducing the cost as opposed to constructing to a much higher standard of quality. Often made by unskilled workers who are unsupervised working in rather harsh conditions of a slave factory.
Like wise this penny pinching cost cutting or simply trying to make a Hot Tub from the cheapest way can also apply to those who are making the largest numbers of spas in the world.
Many Hot Tub Jacuzzis are made using a fully foamed approach some times known as the “fully foamed” or “foam filling” system this is, very much, an out of date production method but is still in use by many makers as it is one of the cheapest forms of construction.
In this cheaper system, the shell of the unit is made from thinner sheets of acrylic or ABS plastic the Tub is then plumbed and piped with all the required pipes etc.
Then the cabinet that surrounds the Hot Tub Shell is injected full of expanding foam to give the weaker shell much needed support.
This is a very much cheaper method of construction as it means that the manufacturer is able to use cheap foam, (instead of fibreglass), to support the shell, rather than building a shell with sufficient strength in the first place!
There are various disadvantages of this system of construction:-
1) Sprayed in polyurethane foam degrades over time, such that there is a decrease in the insulating value.
2) The settling and expansion/contraction of the foam can actually cause leaks in the plumbing.
3) Lastly and most importantly you cannot of course access any of the internal parts of the Hot Tub in the case service is required. Effectively then the most serious downside to this cheaper method of construction is that there is an almost total inability of serviceability during the lifetime of the spa. Not only is the plumbing but also the jet fittings are buried in to the expanded foam. This of course means that, leak detection is more or less impossible with out de-constructing the Hot Tub and removing substantial amounts of foam…
If a fully foamed spa should leak from the rear of a jet fitting then that water seepage may not become apparent until the foam has become extremely wet and soaked through.. The most modern productions methods would be to use some foam to support the pipe work but not to indiscriminately blast, the spa cabinet full of polyurethane as there is no proven benefit to this practice and it actually causes dealers and customers a severe service/access headache.
I have heard it said that some manufacturers fully foam their spas so as to keep the noise of the pipes down – must be a badly designed tub if its that bad.
This is the same as building the electrics and heating systems in a car or in a house in to sold foam. Simply because you have been told by a sales person it will keep the noise down and in any event it will not need servicing . well its not something I would do or believe nut many hot tub manufacturers would have you believe ot to be true.
Is your heating ,plumbing and electrical systems at home, hidden in solid foam because you’ve been told it would never need servicing? That does not sound like a good idea to me ? Many Hot Tub Jacuzzi manufacturers would have you believe that it was! Or perhaps have the bonnet of the car stuck down with cement so you couldn’t check the oil or water would that be a good idea?
So, my best advice, is that one should only buy a product that is well built by an American or Western internationally recognized producer of Hot Tubs and then there is every chance that the product will last and last and give very many years of faultless performance.
The reason is simple in that the internationally recognized producer backs his products with a real guarantee so if it has a fault it falls back on the manufacturer not on you. As you can imagine these manufacturers have had decades of experience and they build them with the proper parts and components so it will not fail and it is for that reason and that reason alone that they are prepared to provide a long life guarantee.
How would you like to own your own Resort Quality Hot Tub, Spa or Swim Spa for pennies on the Dollar?
