The cover is the machine.
Most hot tubs lose the fight through the lid. Eco Spas use a rigid R-40 top with patented Power Clamps that compress a seal around the whole perimeter and hold the heat in, instead of a soft foam cover that ages, stains, and leaks warmth.
It starts with the lid.
"Do you know what one of the biggest issues is when it comes to hot tubs? It's the lid."
A typical foam lid is a hassle to get off, and it gets harder to lift as it ages. Open one up and you'll often see staining inside, things growing on it. That ends up in your water, so you're adding chemicals to fight your own hot tub.
It leaks heat, too. We've walked up on tubs with bubble wrap thrown over the lid, owners trying to claw back the warmth a tired cover lets out. That heat costs money every month it escapes.
~70% of a hot tub's heat escapes through a tired foam top.
| Inside a tired foam lid | Stains, growth |
| At the edges | Heat escapes |
| The result | More chemicals |
A lid that lays on top, or one that seals shut.
A foam cover just rests on the rim under its own weight. The Eco Spa lid clamps down: push the Power Clamps and a seal compresses around the entire perimeter, so the top behaves like part of the tub.
0% — "if it snows on this thing, it just piles up. No heat is transferring through the top."
Lays on top, heat finds the edges
- ✕Sits under its own weight, so heat slips out at the edges.
- ✕Absorbs water over time and gets harder to lift.
- ✕Snow on top melts off, the heat is leaving.
Power Clamps compress a perimeter seal
- ✓Clamps pull the lid down and compress the seal, no gaps.
- ✓Pop the clamps and it lifts off on leverage, every time.
- ✓Snow piles up and doesn't melt: no heat is getting through.
A structural R-40 top.
Not a soft foam slab that pretends to be machinery. A rigid, insulated lid that seals to the tub and stays sealed.
"These right here, this is something that we patented. They're called Power Clamps. When I push this down there's a seal that's going around this hot tub, and it's actually compressing that seal. It also holds that heat in really, really well."
It's the difference between laying a lid on top and pulling it down tight all the way around. To open it, pop the clamps and the lid lifts off on leverage, no wrestling a waterlogged slab.
| Insulation rating | R-40 top |
| Seal | Patented Power Clamps |
| Seal coverage | Full perimeter |
| Heat escaping the top | ~70%, contained |
| Water absorption | None (non-porous) |
| Warranty | Lifetime, cover & structure |
"They don't want that power bill anymore. The efficiency comes down to the R-40 top and the Power Clamps that seal in the heat."
Measured on our E6, the largest model. Running cost runs about $10–60/mo depending on the model.
See which model is right for you.
Every Eco Spa ships with our lifetime hard cover. Find your model.