ThermaSol PROI-140 Pro Series I Essential Steam Generator review
By Kirill Gissa · Published · Specs checked Oct 6, 2026 · 
8.25OF 10
Good
Verdict
Scores 8.25/10, tied for 2nd of the 4 steam generators we track. No price is published, so it gets the minimum 1.5 of 2 on price.
Skip if
You want a price up front: none is published, while 1 of the 4 steam generators shows one
- Price
- Price on request
- Heat
- Steam generator, 8 kW, Incoloy heaters, FastStart
- Seats
- Not stated
- Max temp
- Not stated
- Warranty
- Lifetime
- Returns
- Not stated
Specs and sources
Checked Oct 6, 2026 · source under each valueHeat and power
Build
Buying
WarrantyLifetime factory warranty (parts and labor) plus 2 years in-home service (PROI-140 spec sheet)cdn.shopify.com
Brand page
Warranty, returns and shipping
WarrantyLifetime
Lifetime factory warranty (parts and labor) plus 2 years in-home service (PROI-140 spec sheet).
ReturnsNot stated
ShippingShips to US addresses
Warranty: Lifetime factory warranty (parts and labor) plus 2 years in-home service (PROI-140 spec sheet). Returns: not stated by the brand. Shipping: Ships to US addresses. Source: cdn.shopify.com, checked Oct 6, 2026.
Source: cdn.shopify.com, checked Oct 6, 2026.
Compared with similar steam generators
Heat: Steam generator, 7.5 kW, proportional steam delivery; uses less than 1 gallon of water in 20 min · Warranty: Limited lifetimeScore 8.75/10
$3,642See specs →
ThermaSol PROI-140 Pro Series I Essential Steam GeneratorTHIS MODEL
Heat: Steam generator, 8 kW, Incoloy heaters, FastStart · Warranty: LifetimeScore 8.25/10
Price on request
Heat: Steam generator, 7.5 kW, sequenced heating control · Warranty: Lifetime (limited)Score 8.25/10
Price on requestSee specs →
Heat: Steam generator, 7.5 kW, Express Steam, AutoSteam · Warranty: Lifetime (limited)Score 8.25/10
Price on requestSee specs →
| Model | Price | Heat | Seats | Warranty | Score | Where to buy |
|---|---|---|---|---|---|---|
| Delta SteamScape 7.5kW Steam Generator (5GE-SMP07-240-1) | $3,642 | Steam generator, 7.5 kW, proportional steam delivery; uses less than 1 gallon of water in 20 min | — | Limited lifetime | 8.75/10 | See specs → |
| ThermaSol PROI-140 Pro Series I Essential Steam GeneratorTHIS MODEL | Price on request | Steam generator, 8 kW, Incoloy heaters, FastStart | — | Lifetime | 8.25/10 | |
| Amerec AK7.5 Steam Generator (AK Series) | Price on request | Steam generator, 7.5 kW, sequenced heating control | — | Lifetime (limited) | 8.25/10 | See specs → |
| Mr. Steam MS225R Steam Shower Generator with Express Steam | Price on request | Steam generator, 7.5 kW, Express Steam, AutoSteam | — | Lifetime (limited) | 8.25/10 | See specs → |