Hello from Eastern TN

In the midst of designing and bids on a new gunite pool. 4 to 5 feet deep 15x26 rectangle Salt, mixed opinions on
In ground pop up sweeps
An IFCS complicates the plumbing and provides additional potential for plumbing leaks. The pipes for the IFCS are usually imbedded in the walls and floor of the gunite structure.
If you close your pool in winter (due to possible freezing temps) you will need to blow out all the IFCS pipes as well. Chances are you will have 5-6 zones with 3-4 popups on each zone - that's 5-6 extra pipes to blow out.

How much debris do you anticipate dropping in the pool?
Have you considered a robot? It used low voltage to power the robot. There are also a few cordless ones on the market.

As you can see by my signature, I do have an IFCS - but I live in AZ where the temps rarely go below 40°F, so no issues with freezing. And my pool was built in the late 90's, when IFCS were a big deal in AZ. If I had to do it all over again, I'd choose a different option (either a robot or suction-side cleaner).

Whatever you ultimately decide, post the full plans and detailed equipment list (manufacturers and model numbers) here for review.
 
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