Most hot tub buyers think they have to pick a side: plug-and-play 110V or hardwired 220V. With an Eco Spa, you don't. Every standard model is a convertible — it runs on either, and you can switch between them whenever you want, with no parts changed. Here's what each setting actually does, so you can run it the way that suits you.
How 110V (Plug-and-Play) Works
On 110V, an Eco Spa plugs into any standard North American wall outlet — the same kind your fridge uses. There's a GFCI built right onto the end of the cord. You fill it with a garden hose, plug it in, and it heats up. No dedicated circuit to install before you can use it.
The setting draws a maximum of 12 amps and runs a 1 kW heater. The practical tradeoff is that you run the jets or the heat at full tilt, not both flat-out at the same time. For most people that's a non-issue — you heat the tub, then get in and enjoy the jets. Eco Spa's insulation is good enough that 110V holds temperature well even through a Prairie winter.
How 220V Works
Switch the same tub to 220V and two things change. The heater steps up from 1 kW to a 4 kW heater, so the water heats faster and recovers faster after a long soak with the cover off. And because there's more power on tap, you can run the heater and the jets at full power at the same time. For frequent use, several people at once, or the coldest stretches of winter, that's the difference 220V buys you.
Going to 220V does mean a dedicated circuit from your panel, which is an electrician's job. But it's a setting on the tub you already own — not a different product, and not something you have to commit to on day one.
On the standard models it's a convertible (the E6 Deluxe is 220V only). You don't have to choose at purchase. Start plugged into the wall on 110V, switch to 220V later if you want the bigger heater and simultaneous jets-plus-heat, and switch back if you ever move it. No parts are swapped to change between them.
Which Setting Should You Run?
There's no wrong answer, because you can change your mind. As a rough guide:
- 110V suits most couples and small families using the tub a few times a week. Plug it straight into the wall — no electrician to get going — and the running cost is the same either way, since insulation drives efficiency, not voltage.
- 220V is worth wiring up if you reheat often from cold in deep winter, host several people who all want full jet pressure, or you're already running conduit during a deck build or renovation.
Either way, the all-in cost to run an Eco Spa stays in the $10–$60 a month range depending on the model — power, chemicals, and filters included.
A Comparison You Can Act On
| Factor | 110V (plug-in) | 220V |
|---|---|---|
| Connection | Standard wall outlet, GFCI on the cord | Dedicated circuit from your panel |
| Max draw | 12 amps | Higher (dedicated circuit) |
| Heater | 1 kW | 4 kW |
| Jets + heat at full power together | One at a time | Both at once |
| Cold-weather reheat | Steady | Faster |
| Monthly running cost | $10–$60 depending on model (same either way) | |
| Switch between the two | Anytime — no parts changed | |
4 Questions to Ask Any Dealer
- Is the tub actually convertible, or do I have to choose 110V or 220V at the time of sale? With an Eco Spa, you don't choose — it runs on both.
- Can it plug into a standard wall outlet? An Eco Spa can, with its own GFCI on the cord.
- What changes when I go to 220V? A straight answer: a bigger heater and the ability to run heat and jets together — not a different tub.
- Does switching voltage void anything? It shouldn't. Eco Spa is built to run either way.
You're not picking a lane for life. Plug an Eco Spa into the wall on 110V to start. If you later want the 4 kW heater and jets-plus-heat at the same time, switch it to 220V. The decision stays yours the whole way through.