On the premier properties of Fairfield County, Connecticut and Westchester County, New York, architects spend months perfecting sightlines, the texture of hand-carved stone, and the geometric precision of custom gunite water shapes. Every edge and material is selected to convey permanent, uncompromised luxury. Then construction ends, and a mechanical ghost is introduced to the garden: a bulky robotic vacuum that must be dragged across the patio, plugged in, and fished out before guests arrive.
At Gedney Pools, we believe a custom-engineered pool shell should remain structurally flawless and visually empty twenty-four hours a day. By casting a sophisticated, completely invisible self-cleaning system directly into the concrete shell during construction, the poolscape becomes a self-cleaning work of art. To appreciate this standard of low-touch ownership, it helps to understand the sixty-year heritage of hydraulic engineering that made it possible.
What it is: cleaning cast into the concrete
A network of retractable nozzles is cast directly into the gunite shell during construction -- floor, steps, benches, tanning ledge, spa. A distribution valve at the equipment pad sequences banks of nozzles: they rise flush from the finish, sweep high-velocity water parallel to the floor, and retract invisibly when done. Debris is driven into high-flow, VGB-compliant safety drains and a hidden pre-filtration canister before it can ever reach the pump. The technology is a mature science refined over sixty years -- born when a 1950s pool serviceman dropped a running garden hose into his pool, answered the phone, and returned to find the floor swept clean -- and today it runs on precision spring-retracted nozzles indexed 20 to 30 degrees per cycle for complete coverage, sequenced electronically at whisper-quiet variable-speed pump levels.
Robot vacuum vs invisible shell
The plastic robot
Floating hoses and cords draped over custom stone coping. Stalls on tanning ledges and benches. Must be deployed, untangled, emptied, and fished out before guests arrive. Cords snag automatic safety covers.
The Gedney self-cleaning shell
Flush-mounted, color-matched, virtually invisible. Sweeps every custom shape and depth profile. Fully automated daily cleaning that runs silently in the background -- even with the safety cover closed.
The thermal battery: beyond cleaning
For Northeast estates, an in-floor system is more than a cleaning tool -- it is a thermodynamic distribution engine. Traditional pools return heated water through shallow wall inlets. Warm water is less dense, so it stratifies at the surface -- exactly where evaporation sheds heat and chemicals fastest -- while a cold, stagnant layer sits at the floor.
Standard wall-return plumbing
Heated, treated water pools at the surface. Rapid thermal stratification, accelerated chemical off-gassing, cold feet on the deep-end floor, and heat lost to evaporation at the warmest layer.
Gedney floor-return circulation
Warm, freshly sanitized water returns exclusively at floor level and pushes upward through the full water column -- turning the entire gunite shell into an active thermal battery.
The results of full water-column circulation: even temperature across deep ends, benches, and ledges; chemical evaporation reduced by up to 30 percent; seasonal heating costs cut by up to 50 percent; and a swim season that extends comfortably through April, May, September, and October without exorbitant energy bills.
Engineered for Northeast realities
The leaf and acorn challenge. Our region's mature oaks, maples, and birches drop heavy autumn debris that overwhelms standard skimmers. We pair the floor nozzles with two safeguards: sumpless, VGB-compliant high-flow safety drains whose beveled channel design draws leaves and twigs inward in a gentle vortex without suction-entrapment risk, and a high-capacity pre-filtration debris canister that traps heavy organic material before it can reach the pump basket -- protecting the variable-speed pump from cavitation.
Automatic safety cover harmony. Most luxury pools in Greenwich, Bedford, and Scarsdale run automatic safety covers. Robotic vacuum cords snag covers; flush-mounted nozzles cannot. The system cleans while the cover is fully closed -- and immediately captures the fine dust and pollen a cover sheds as it opens.
Freeze-thaw protection. Northeast winters demand rigorous winterization: the valve's internal gear module is removed via a single band clamp and stored indoors; each subterranean zone is blown out with high-volume air and secured with an airlock; the debris canister gets non-toxic propylene-glycol antifreeze and a weighted expansion jug that absorbs ice expansion. Properly closed, the system is engineered to last the lifespan of the shell.
Built in at the gunite phase -- by design
This is not a bolt-on accessory. Nozzle banks and zone piping are cast into the concrete shell before gunite is shot, which is why true in-floor cleaning is a new-construction decision made at schematic design. Before any steel is laid, we model your pool's exact surface geometry and depth profile, calculate the flow each zone requires, and customize nozzle sizes and overlaps for near-complete floor coverage -- steps, tanning ledges, benches, and spa included. It is one more reason the custom gunite conversation should start early, alongside automation and water care decisions.
The result is a structurally permanent, whisper-quiet system that frees you from daily pool maintenance, preserves the architectural beauty of the waterscape, and pays for itself in energy savings over the life of the pool.
See it modeled on your property
Want to see how an in-floor design would perform on your specific site? Call (203) 302-9920, email info@gedneypools.com, or request a consultation for a custom hydraulic evaluation.
John Gedney
Owner, Gedney Pools LLC -- a fourth-generation pool builder
Darien, CT
CT HIC #0704131 | CT SPB #SPB.0000169 • Verify at elicense.ct.gov