How big is the Bestway / Lay-Z-Spa St.Lucia AirJet?
In brief
The Bestway / Lay-Z-Spa St.Lucia AirJet is a compact soak: about 160 gallons of water inside a shell 67 inches across and 26 inches tall, rated 2 to 3 people, and around 1,964 lb once filled and in use.
Heating cost at this volume
Standby heat loss at this size works out to about 4.8 kWh per day (102 F set point, 50 F outside, average cover). Expect $25 or so per month at $0.17/kWh, from $17 on cheap power to $36 on pricey power. Model your own rate and climate on the running cost calculator.
What to add to 160 gallons
The math is done for 160 gallons. Measure in ounces by weight, not volume scoops.
| To do this | Chemical | Amount |
|---|---|---|
| Raise total alkalinity +10 ppm | sodium bicarbonate | 0.38 oz |
| Raise free chlorine +3 ppm | dichlor granules | 0.11 oz |
| Raise bromine +3 ppm | bromine granules | 0.11 oz |
| Chlorine shock (+10 ppm) | dichlor | 0.38 oz |
Add in small steps with the pump running, wait, then retest before adding more. Never mix chemicals together, and always follow your product label, which wins over any calculator.
Bestway St.Lucia AirJet spec sheet
- Operating volume160 gal
- TypeInflatable
- Dimensions (in)67 dia x 26 H
- Footprint24.5 ft²
- Rated seats2 to 3
- Gallons per seat53
- Water weight1,334 lb
- Filled + 3 adults1,964 lb
- Standby heat (est.)4.8 kWh/day
- Heat-up 55 to 102 F (est., 1.3 kW)14.1 h
Estimated rows use the site's published formulas at 102 F set point and 50 F ambient with an average cover. Heat-up excludes standby loss.
Compared with other inflatable tubs
Among 35 comparable inflatable models, typical figures are 240 gallons and a 77 inch span. Here you get 33 percent less water than typical, in a body 10 inches narrower than the median, working out to 53 gallons for each rated seat.
Deck load: the filled weight
Between 1,334 lb of water, and up to 555 lb of bathers, this tub asks its surface to hold about 1,964 lb across 24.5 square feet (about 80 psf). Check the rating of any deck before placing it. Work out any tub on the filled weight calculator.
Setup realities
The heater is the schedule-setter: at 1.3 kW, warming a fresh 160 gallon fill from 55 F to soaking temperature is about 14.1 hours in the ideal case, longer on a cold night. Wiring is a standard household outlet.
Source
The 160 gallon figure is from the manufacturer's published specification: m.bestwaycorp.com.au. Bestway official (AU) spec: 605 L (160 gal.) at 80% fill; 67x26, 49in inner dia. Manual model 60038. Capacities vary with how high you fill and with seats and footwell; confirm against your own manual or a metered fill when precision matters.