Cold plunge brands we service

415 findings logged · models seen include All-In, Gen 1, V1, XL, Pro, Evolve Pro and commercial units, plus Plunge saunas

Plunge is the brand we service most. A large share of that work has been warranty-covered parts replacement and retrofits on earlier-generation units. The issues we log most often:

• Circulation pumps (16.6% of findings): failed pumps and pump retrofits, often together with a new power supply.
• Filter housings and manifolds (15.4%): leaks at the filter cap, cracked canisters, and housings damaged by overtightened caps.
• Power supplies, power strips and cords (11.1%): failed supplies, melted plugs at power strips, and units run on extension cords.
• Plumbing (10.4%): union repair kits, under-tub plumbing and manifold leaks.
• Chillers (8.7%): including swaps from earlier-generation chillers to newer units.
• Displays (6.3%): UI display and ribbon-cable replacements, sometimes alongside the control board.

Seeing HA, CF, PF or FA on the display? See Plunge error codes we've seen.

41 findings logged · cold plunges and hot/cold contrast units

• Circulation pumps and their power (9 findings each): pumps that stopped because the power supply or cold-side board wasn't delivering power. A pump with no power reads as "no flow," and the chiller then won't start.
• Plumbing leaks (7): most often at the heater union on contrast units, plus pinhole leaks in flex plumbing.
• Control boards (4): including loose incoming power wires and a burnt controller wire behind an E2 code.
• Filters: one clogged filter starved the pump until it burned out, and the chiller stopped as a downstream effect.

See AquaVoss E2 on the error codes page.

38 findings logged · residential and commercial cold plunges

• Circulation pumps (6 findings): failed pumps replaced, plus a DC power supply that stopped feeding the pump.
• Displays and control boards (9 combined): including water getting into display panels on commercial installs, and a display that froze in another language and cleared after a full 3-minute power-off.
• Water chemistry: on commercial sites, pool-style chlorine floaters over-sanitized the small water volume and corroded stainless liners.
• Closed valves: on two units, a closed valve was the whole problem, and opening it restored circulation.
• Freezing: a unit that froze solid needed a new logic board once it thawed.

15 findings logged

• Pump and flow (6 findings): airlocks after reconnecting the filter housing, and pump impellers that worked loose and stopped moving water.
• Pre-filters and filter housings (3): a clogged intake cover restricting circulation.
• Icing: low flow plus icing on the refrigeration side. The unit needed a full 24-hour thaw before re-diagnosis.
• GFCI trips: persistent tripping traced toward the chiller.

14 findings logged

• Temperature probes (4 findings): failed probes, including one behind an E1 code that tested bad on resistance. Probes were replaced and mounted in a proper thermowell.
• Filters never changed: on more than one unit, the original filter was still in place and had starved the pump until it stalled.
• Power: a long extension-cord run left the compressor without adequate power.

4 findings logged, too few for percentages

What we've seen: a commercial unit that stopped cooling with a suspected heat-exchanger problem (it showed CLn), routine filter replacement, and hard-water spotting on stainless steel and on the chiller housing. In hard-water areas, plan for regular wipe-downs and periodic descaling.

4 findings logged, too few for percentages

What we've seen: blown fuses that left the chiller with no power (one on the chiller itself, one on the display board), both replaced on site, and a cracked pump discharge union found during reassembly. Units without a regular service schedule are where small issues tend to pile up.

3 findings logged, too few for percentages

What we've seen: a condenser fan that wouldn't spin while the compressor ran (a suspected capacitor), a unit likely low on refrigerant, and a clogged filter. Refrigeration-side issues need a technician; filters are an owner job.

We've serviced RecoverEx units but don't yet have enough logged findings to describe brand-specific patterns. Across all brands, the most common issues are circulation pumps, filters and power supplies. See the failure report for the full picture.

5 findings logged, too few for percentages

What we've seen: an "air in the lines" error caused by a clogged filter, scale contributing to a pump failure and restricted flow, a heat exchanger damaged by corrosion, and lightly dusty condenser coils cleaned during service.

3 findings logged, too few for percentages

What we've seen: water discoloration from the cedar leaching tannins (normal during early fills), a drain-plug adapter that didn't fit, and a unit that had simply been left powered off between visits, so nothing was circulating or filtering.

9 findings logged, most from a single multi-unit commercial site

What we've seen: residential pumps that stopped engaging or getting power. Our commercial findings are mostly a lesson about service cadence rather than the equipment. Units under heavy daily athlete use needed coil cleaning, pump rebuilds, re-sealing and chemistry correction because they hadn't been serviced on a commercial-duty schedule.