Need help. What is difference between Jandy JRT2000r, 2500r, 3000r? My issue is the engineer spec’s the 3000r, the builder put in the 2000r by mistake and then claims it’s the 2500 series. This is a heat/chill unit for a 12000 gal pool and spa. All the 2000r be sufficient or should I force them to replace with what was spec’d? Need answer soonest please.