Backyard Plus is the best!! For this order, I received it VERY WELL packaged, as some of the items could have been damaged easily in transport - but they were perfect! They were shipped faster than I expected, and it's just the kind of experience you want when you're buying online. I've ordered from Backyardplus a few times over the past years, (2013) and they were excellent even back then. On 09/03/2026 by T. P. (verified customer)
Thermostat Knob Assembly, Light Gray
Sku: 70421Obsolete and no longer available from factory
Replacement thermostat knob in light grey color for adjusting the temperature on Hot Springs spas with light grey control panels built from 1988 to 1993. This knob connects to a standoff attached to the thermostat in the control box.
| Ref. | Diagram | |
|---|---|---|
| # 8 | Control Panel (Frontside) 1989-1993 (Hot Spring 1993 - 1993) | Shop by Diagram |
| brand | model | years |
|---|---|---|
| Hot Spring | Classic (F) | 1993 |
| Hot Spring | Classic 230v. (FH) | 1993 |













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