Inergize Health - Spire Apex
Inergize's $9,490 flagship: the Spire's cedar-and-stainless shell with a 1HP chiller the brand rates to 32°F.
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QUICK VERDICT
Inergize's new flagship pairs the Spire's cedar-and-stainless shell with a 1HP chiller whose Ice-Making Mode the brand rates to 32°F.
- Best for
- Buyers who want the coldest manufacturer-rated floor available in a cedar-and-stainless tub at this price, and who can wait out a 16-week preorder.
- Skip if
- You need delivery soon, you buy on warranty depth (Renu's 60-month tub coverage vs 12 here), or you can't run a dedicated 120V/20A circuit.
- Tier
- Premium
The Spire Apex is Inergize's new flagship: the same cedar-wrapped shell with a 316 marine-grade stainless steel interior as the Spire Elite, fitted with the step-up 1HP chiller Inergize calls Ice-Making Mode. The brand rates it from 32°F to 104°F, states cooling at about 12°F per hour with 2,700W (9,200 BTU/hr) of capacity, and quotes roughly 65 dB while actively cooling. At $9,490 against a $10,490 compare-at, it launches within $9 of a Renu Cold Stoic 2.0.
The stated 32°F floor is the pitch. Most chillered tubs, including Inergize's own Elite line, publish floors in the 36-39°F range, so a production cedar tub rated to freezing is a genuine spec, though it is the manufacturer's number and the unit is too new for anyone to have field-tested it through a summer. The reclined seat carries over: per Inergize the shell fits users to 6'4" and 250 lb at neck depth, on a 12-inch seat, in a 39.5 x 28.7 x 43.76 inch footprint holding roughly 90 gallons.
Where it gives ground: the warranty is 12 months against Renu's 60 at the same money, the chiller needs a dedicated 120V/20A grounded circuit (the Elite runs on a common 15A), and this is a launch-window preorder, live and purchasable but absent from the brand's own live-site collection as of 2026-08-16, with a listed 16-week lead time. Buyers who need a tub this season or who buy on warranty depth should look at Renu or The Plunge; buyers who want the coldest manufacturer-rated floor in a cedar shell, and can wait for it, are the Apex's actual audience.
Buyers who want the coldest manufacturer-rated floor available in a cedar-and-stainless tub at this price, and who can wait out a 16-week preorder.
You need delivery soon, you buy on warranty depth (Renu's 60-month tub coverage vs 12 here), or you can't run a dedicated 120V/20A circuit.
Specifications
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Where this fits
Inergize Health Spire Apex cross-shops across several editorial surfaces on this site: the full brand catalog, the buyer-intent tags this item carries, the price band it qualifies for and the in-depth guides for its category.
Inergize Health Spire Apex - buyer FAQ
How cold does the Inergize Spire Apex actually get?
Inergize rates the Apex's Ice-Making Mode to 32°F, colder than the 37°F floor it states for its own Elite tubs, with cooling at a stated 12°F per hour. Those are manufacturer numbers, not our measurement, and the unit is too new for a field track record, so test the floor during the 30-day guarantee window.
Spire Apex vs Spire Elite, what does the extra $1,500 buy?
They share the same cedar and 316 stainless shell, 39.5 x 28.7 x 43.76 inches externally, fitting users to 6'4" per Inergize. The $9,490 Apex steps up to a 1HP chiller with a stated 32°F floor; the $7,990 Spire Elite runs a 0.8HP unit rated to 37°F. The Apex also needs a 20A circuit, not 15A.
What electrical setup does the Spire Apex need?
The product page specifies a 120V/60Hz, 20A grounded circuit drawing 1,150W. Many garage and patio outlets sit on 15A circuits, so plan on an electrician if you lack a dedicated 20A line; typical installs run a few hundred dollars. The chiller itself is IPX4 splash-resistant and rated by Inergize for outdoor placement.
When does the Spire Apex actually ship?
It is newly launched: purchasable on the product page but absent from Inergize's own live-site collection as of 2026-08-16, with a 16-week preorder lead time listed. The page also references founder units shipping late August 2026. Confirm your ship date in writing before paying, and note the 30-day money-back guarantee covers a change of mind.
Spire Apex vs Renu Cold Stoic 2.0 at the same price?
Prices nearly match: $9,490 versus $9,499 for the Renu Cold Stoic 2.0. Renu answers with a 60-month tub warranty, horizontal full-body immersion, and years of field history; the Apex answers with a manufacturer-stated 32°F floor, a reclined seat, and heat to 104°F. Warranty-first buyers go Renu; coldest-stated-floor buyers go Apex.