Ice bath chillers in Kigali: sizing, supply and service

Sizing on volume, target and ambient

We step up one size when the tub stands in afternoon sun, when a team uses it back to back, or when the target is 4–6 °C rather than 8–10 °C. Supplied and fitted, a chiller sits in the 2.2 – 7.4 million RWF band depending on that size, with duty and VAT inside.

What we install and why

Our units are outdoor-rated cabinets with a titanium heat exchanger — titanium because the water is cold, circulating and often ozonated, and stainless steel pits under exactly those conditions. The cabinet carries the display, a circulation pump and insulated hoses that enter low in the tub wall, so nothing crosses the rim for anyone to trip over.

We set the unit to hold its setpoint in cycles rather than running flat out. The insulated lid does the overnight work, and the compressor gets a working life instead of a warranty period.

Where the chiller sits

A chiller needs air. Boxed into a cupboard with no airflow it runs hot, loses capacity and fails early. We give it a shaded position with clearance on the grille side, out of the afternoon sun, and bury or box the hoses.

On a hillside plot in Kigali the neatest spot is often a niche in the retaining wall below the tub: gravity helps the circulation and the unit disappears from view.

Running cost on the REG tariff

Compressor power is roughly 0.75 kW of electrical input per horsepower, so a 2 HP unit draws about 1.5 kW while it runs. How many hours it runs depends on the insulation, the lid and the gap between water and air — and at 1,450 m, where nights fall to 16–17 °C, that gap is small.

A labelled example, not a promise: six running hours a day is about 9 kWh, or some 270 kWh a month. At REG's household rate of RWF 369 per kWh above 50 kWh a month (effective 1 October 2025, before VAT and the regulatory fee) that is close to RWF 100,000 a month. A gym on the non-residential tariff pays RWF 376 per kWh above its first 100 kWh.

Service, and the honest part

Condenser coils clog with dust in the dry season, especially near an unpaved road. We service on a six-month cycle — clean the condenser, read the refrigerant pressures, change the cartridge, test the ozone cell — and on a three-month cycle near dusty savannah roads. It takes about an hour and it separates a chiller that lasts eight years from one that dies in three.

The tub the chiller serves is described on the cold plunge page, and how the units reach Kigali is explained in importing sauna equipment to Rwanda.

Key points

• Titanium heat exchanger — stainless pits in cold, ozonated, circulating water
• Shaded position with grille clearance; hoses buried or boxed, never over the rim
• Six-month service: condenser, pressures, cartridge, ozone cell (three-monthly in dusty areas)
• Sized from your tub volume and target — ask us before buying a unit online