Welcome to our forum.
Can't recall ever seeing a metal framed spa rust to the point of collapse or have the bottom fall out when lifting for a move. Have seen PLENTY of rotted wood framed spas have the bottom fall out when lifted or moved. Seeing Stainless Steel framed spas coming out of China in droves right now. They should not rust providing they have enough chromium present in them to act as a protective barrier. Time will tell the tale on them. Usually when a spa rots or galvanized spas rust it's due to customer neglect not fixing leaks in a timely fashion, improper placement of the spa and/or poor manufacturer design that doesn't allow water to escape the floor pan.
Put a treated 2x4 in the swamp and put a sheet metal stud in the swamp, tell me which lasts longer.Steel studs have been around for years and years. The ONLY advantage they have is fire resistance, (this is why they are used in commercial construction.)They are NOT stronger, they are NOT easier to work with, and they DO NOT last longer.A lifetime warranty is like 7 years. Fine print.
They have full foam insulation which is great for efficiency, but I prefer an insulation that is removable for easy access. After a ton of research I decided that these two things were requirements for me. That's what lead me to the Hot Spring Highlife collection; specifically the Envoy. It includes quality insulation that is easily removable in case I ever need repairs, dedicated circ pump, and fully composite pan and frame that should last pretty much forever. I've had the spa for two months now and it has been great. I would highly recommend it. That said, there are many great options. I would simply say that if you prioritize quality then a dedicated circulation pump, fully insulated with easily removable insulation, and fully composite frame and pan would be requirements for me.
Quote from: wcmorris on September 15, 2021, 04:13:08 pmThey have full foam insulation which is great for efficiency, but I prefer an insulation that is removable for easy access. After a ton of research I decided that these two things were requirements for me. That's what lead me to the Hot Spring Highlife collection; specifically the Envoy. It includes quality insulation that is easily removable in case I ever need repairs, dedicated circ pump, and fully composite pan and frame that should last pretty much forever. I've had the spa for two months now and it has been great. I would highly recommend it. That said, there are many great options. I would simply say that if you prioritize quality then a dedicated circulation pump, fully insulated with easily removable insulation, and fully composite frame and pan would be requirements for me. I'm pretty sure that the highlife collection uses full foam just like bullfrog. This is also what tells me the whole fiber core insulation system is b.s. and just a cheaper way to build hot tubs. Why else would they use full foam instead on their top of the line spas if the fiber core is better?
Two, it can cause more wear on your jet pumps as those are the ones used for both circulation and powering the jets. This means there is potential for having to replace a big expensive pump sooner than you might if you had a dedicated circ pump.
Quote from: wcmorris on September 15, 2021, 04:13:08 pm Two, it can cause more wear on your jet pumps as those are the ones used for both circulation and powering the jets. This means there is potential for having to replace a big expensive pump sooner than you might if you had a dedicated circ pump. Don't get me wrong here circ pumps are good and have benefit however the total pump replacement I do most is small Circulation Pumps especially the small Lanig magnetic drive ones. Usually they can't be rebuilt. They usually fail internally and not from leaking seals. They run 24/7 365 where a main 2 speed pump runs 4 hours a day and can usually be rebuilt fairly cheap. Impeller, Seal and front bearing well under $100 if you DIY. Most times when a main pump needs service it is due to a leaking seal. In some cases the entire pump needs replacement but again kinda close to the cost as a circ pump replacement. It is also one more thing to go wrong as you will still have 2 main pumps in most spas along with the circ instead of just 2 main pumps. Some would argue that a main pump running on low for a 2 hour filter cycle will shed heat inside the cabinet (140 - 160 degrees) and allow you to recoup some cost of operation. It will also inject warmer air into the air injection valves. When air is turned on and air is added to the stream of water the valve pulls air from inside the cabinet. Air injection should always be turned off when the spa is not in use to reduce cost as they will have a cooling effect from drawing air from inside the cabinet that is usually colder than the water temp. JMO
Just to add to the conversation, I've been told by engineers that 2 speed pumps have a higher failure rate than a similar 1 speed pump.