It's a Wi-Fi touch control panel for Harvia sauna heaters up to 17 kW. It handles operating time, temperature, sauna lighting and the fan from one small panel, and connects to your network for remote control and monitoring.

The Club, Spirit, Cilindro, Virta and Virta Pro series. It does not pair with the KIP series, which uses the CX170 instead — that's the most common mix-up, so check your heater before ordering.

No. If your heater has a built-in steamer you need a combi controller — the Xenio CX30C or Fenix FX30C. The CX45 has no humidity control and won't run a steamer.

Send us your heater's model and part number and we'll confirm before you spend anything. Harvia specifies a particular controller for each heater, and a mismatch either won't work or won't be covered under warranty.

It depends on your wiring configuration, and this catches people out. On single phase with one supply wire it handles up to 10.8 kW. On single phase with two supply wires it goes to 17 kW. On three phase, 15 kW. Tell your electrician which configuration you're using before they wire it.

Because a single supply wire limits how much current the unit can pass. Splitting the supply across two wires raises the ceiling considerably. It's the reason a heater like the Club K15G, which draws 61.7 amps single phase, is fed through two fuses rather than one.

Yes — this is one part number covering both, which is unusual. Most Harvia controllers come in separate single-phase and three-phase versions. Your electrician configures it for your supply during installation.

The panel connects to your home or building network, letting you control and monitor the sauna remotely — check the temperature, adjust settings, or turn it off from elsewhere.

Remote starting on any sauna heater is governed by safety requirements, because no app can verify nothing has been left on the stones. How that works in practice depends on which heater you pair it with — the Spirit series has hardware that permits genuine remote start, others require a physical confirmation first. Ask us about your specific combination before you buy.

No subscription applies to the hardware. You will need reliable Wi-Fi reaching the sauna, which is worth checking before you buy if it's an outbuilding at the end of the garden — a controller with no signal is just a wall panel.

The panel still works normally. Wi-Fi adds remote access; it isn't required for the sauna to operate.

Operating time, temperature, sauna lighting and the fan — so one panel handles the whole room rather than you reaching for separate switches.

194°F (90°C), matching the heaters it controls.

60 minutes per session. That's a safety limit rather than a limitation — it means the sauna can't be left running indefinitely by accident.

The panel has adjustable session settings. Exact scheduling behaviour is covered in the operation manual, and we're glad to walk you through what it does before you buy.

Wall-mounted or surface embedded, and this one is rated to be installed inside the sauna room as well as outside. Harvia specifically note you can put it in the sauna, the shower room, the dressing room, or even the living room.

Outside is the conventional choice — you set the room before entering rather than reaching for a panel mid-session. Inside is permitted here and some people prefer it for adjusting temperature during a session. Its rated operating range is 104 to 194°F, so it will survive sauna conditions.

Yes, within the cable limits between the panel, power unit and sensor. If you want it in a living room or hallway well away from the sauna, tell us the distance before you order so we can confirm it works or supply an extension.

3.4" wide × 1" deep × 4.4" high (86 × 25 × 111 mm) for the panel itself. Small and unobtrusive. The power unit needs its own space — see below.

The digital control panel, data cable, power unit, temperature sensor, the installation and operation manual, and the warranty.

It's the switching box between your electrical supply and the heater — the panel is just the interface. It mounts outside the sauna in a dry location with access for service. Plan its position with your electrician before anything gets wired; it's the piece people forget until install day.

If a sensor came with your heater, install it according to the heater's manual rather than the controller's. The two manuals can give different instructions and the heater's takes precedence. Worth flagging to your electrician before they start.

Yes. There's no plug — this is a permanent electrical installation and needs a licensed electrician.

The wiring must be done by a licensed electrician to local code. It's a mains-connected control for a high-load appliance, not a thermostat swap.

Yes, any licensed electrician can. Give them both manuals — the controller's and the heater's — before they start, and confirm the supply-wire configuration in advance since it determines the capacity.

No. Harvia sauna circuits should not be run on GFCI — it causes nuisance tripping and voids the warranty. If your electrician suggests one, point them at the installation manual first.

Only if your heater is on the compatible list — Club, Spirit, Cilindro, Virta or Virta Pro. Send us your heater's model and part number and we'll tell you straight whether this is the right one.

Plastic housing, black finish, touch interface.

The panel itself is negligible at 0.4 lbs. The power unit is the substantial part of the package.

One year limited for consumer use, and one year limited for commercial use.

Yes — it carries an explicit commercial warranty. If it's going into a gym, spa or hotel, tell us; we handle commercial projects regularly and there may be considerations around session limits and access control worth discussing.

Yes — ETL listed. Your electrical inspector will want to see that listing.

Harvia design and manufacture in Finland.

Capacity and compatibility. The CX45 handles larger heaters and adds the Virta Pro series to its compatible list. If your heater is specified for the CX30 — the Club K10G and Spirit SP60E among them — buy that one instead; the extra capacity here does nothing for you.

Both are Wi-Fi controllers covering similar ground. The Fenix is Harvia's newer touch-panel line; the Xenio is the established range and generally the lower price. Which you want often comes down to which your heater specifies and which interface you prefer. Ask us and we'll lay out the difference for your setup.

No. Heaters with onboard controls, like the Harvia KIP B series, are self-contained and don't take an external panel. This controller is for heaters that ship without controls.

Harvia offer a separate Wi-Fi remote control panel compatible with the CX45, which some owners fit as an additional or replacement interface. Ask us if you want a panel in more than one location.

By parcel carrier. Freight is calculated to your address — ask us for a delivered price, particularly if you're ordering it alongside a heater and stones.

Get in touch for current availability and a realistic date. We'd rather give you a real timeframe than a stock phrase.

Wipe the panel occasionally and keep it dry. There's nothing to service.

Call us. We handle warranty claims directly with Harvia rather than handing you a phone number. Note this is a serialised item, so keep your paperwork — the serial number matters for warranty claims.

Most buyers need this quoted with a heater and stones, and freight varies by address. Request pricing and you'll get one delivered figure for a complete working setup rather than a number you have to add to.

We're an authorized Harvia dealer, and on controllers specifically that's worth something — heater compatibility, supply configuration and cable runs are all easy to get wrong on paper. Send us your heater details and we'll confirm the correct controller before you spend anything, rather than after.

Please review our return policy at thesaunarepublic.com/policies/refund-policy. Because controllers are matched to specific heaters, confirm compatibility with us before ordering — it's a five-minute check that avoids a return.

Call (302) 273-0861 or email info@thesaunarepublic.com and we'll be glad to help.