Thanks for taking the time to respond/help. Looks like I can install a new pump and heater spa pack for $650 after taxes and some fittings. I believe I have the room to install it on the suction side. This tub has molded in steps which provides space underneath (see photos). I only paid $500 for this tub which was purchased new May 2020 for $3000. So a total investment of $1150 wouldn't be too bad. This particular spa controller uses the exact same top panel I already have, so I wouldn't have to swap that out (would end up with new spare). The replacement pump will be a 2 speed, heat only on low speed. My question... Would this be a smart investment? It still is only a 110v setup with the limitations of only heating on low speed with 1.4kw heat. I would still have the same temp drop during use. I do like that the pump can run at a lower speed while heating, because the spa is in our attached garage (less noise). Think there would be any energy consumption difference?
We used an inflatable spa last year, so we're used to heat limitations. I'd be lying if I said we weren't hoping for a little better performance out of this plug-n-play model though.
Links to the parts I'm referencing to (if not allowed let me know)...