It is important to consider each of the following features when shopping for a hot tub:

  • Shell and understructure. Make sure that the shell of the hot tub has no cracks, bubbles or flaws. Verify that it has a high level of UV resistance and temperature fluctuation testing, especially if you live in an extreme climate. Also, make sure that the understructure is solid foam or fiberglass for proper support and insulation. Ask to see a cross section of the spa to check on this.
  • Cabinetry. Above-ground hot tubs should have a cabinet made of wood or a wood-type synthetic. Make sure the cabinet is aesthetically pleasing and as low-maintenance as possible. Synthetic cabinets tend to be easier to care for than real wood. The walls of the cabinet should also be removable for easy servicing, and the spa should have an adequate 2x4 or metal interior frame construction.
  • Heater. Heaters range in power from 1.5 KW to 11.5 KW, and the best heaters have elements that wrap around the water pipes to avoid actual exposure to the water. The more powerful the heater, the faster the spa will heat up, but more powerful heaters also use more energy.
  • Pump and filter. Most spas use cartridge-type filters that should be hosed off every three to four weeks. Consider not only the type of filter used, but also the location on the spa for ease of cleaning. The pump should also be easily accessible in case of necessary servicing. The noise level of the pump should be checked before purchase to make sure it is at least tolerable.
  • Insulation. Proper insulation for any type of hot tub consists of completely filling the base around the understructure. This may be done with a solid layer of rigid foam (most common), which reduces noise well but can make servicing difficult. The other option is layered insulation, which also reduces pump noise, but it does make servicing much easier.
  • Seating. Check the number, configuration and type of seats. Actually sit in the spa to check depth and leg room. Many experts now recommend a "soak test" (actually using the hot tub in the showroom) prior to purchase. Make sure that there is adequate seating for everyone who plans to use the spa and that controls are easily accessible from within the spa.
  • Jets. Spas today can have anywhere from a single jet (or none at all) up to 160 jets, and there are more than a dozen different types of jets available. Sit in the spa in the various seats to check the placement of jets. You may also want to find out how adjustable each jet is, what each type does, and whether the jet operation can be programmed or controlled using the spa controls.
  • Other amenities. Spas can be equipped with nearly every amenity you can think of, including aerobic workout equipment, massage chairs and pillows, stereo and TV/DVD systems, a variety of plain and colored lights, and even waterfalls. Determine what will enhance your spa experience and fit your personal budget.
  • Cover. Never purchase a spa without a cover. A hard, securely locking cover offers the best protection for both your spa and any children or pets that may play around the spa. Experts also recommend investing in a cover lifter, as most spa covers weigh between 150 and 200 pounds and can be very cumbersome to lift without help.

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