The Cover Valet CV250 is the best hot tub cover lifter for most square or rectangular tubs. Cover Valet says it is the most widely used lifter in its industry, it is dual gas shock assisted, and it screws into the cabinet or a deck. It handles covers up to 91 inches; the CV400 version of the same design goes to 104 inches.
If your tub is round, octagonal or rotomolded, or you don’t want to drill into the cabinet, go to the undermount models: the Cover Rx (covers to 96 inches, any shape) or the Cover Caddy (any shape to 120 inches, but it needs 36 inches behind the tub).
Every pick here is from one maker, Cover Valet. Our desk research did not turn up another brand that publishes comparable specifications (cover shape, clearances, tub height, warranty) on its own site, and we only list what a maker states.
| Model | Cover shapes | Max cover size | Mount | Rear clearance | Gas shock | Spa height |
|---|---|---|---|---|---|---|
| Cover Valet CV250 | Square or rectangle | 91 in. | Screws into cabinet or deck | 6-8 in. | Yes | All |
| Cover Valet Pro | Square or rectangle | 104 in. | Screws into cabinet or deck | 6-8 in. | Yes | All |
| Cover Caddy | All shapes | 120 in. | Undermount | 36 in. | Yes | 30-41 in. |
| Cover Rx (search) | All shapes | 96 in. | Undermount | 18 in. | Yes | 24-38 in. |
| Cover Rock-It | Square or rectangle | 100 in. | Undermount | 18 in. | No | 30-44 in. |
| Cover Ex (search) | Square or rectangle | 104 in. | Screws into cabinet | 12-15 in. | No | All |
Figures are Cover Valet’s published specifications, not test results. The CV250 and Pro rows are the 91-inch and 104-inch versions Cover Valet describes on its product page; side clearance is 2.5 inches for both.
Cover Valet CV250: best for most square or rectangular tubs
Identity check: Cover Valet’s product page for the Cover Valet lists two sizes, the CV250 (covers up to 91 inches) and the CV400 (up to 104 inches). The linked Amazon listing is titled CV250.
Why it leads: it is the maker’s core model: dual gas springs, a built-in safety lock that holds the cover open, and a mount that goes on the cabinet or directly onto a deck for a recessed spa. Cover Valet says it works inside most gazebos and, with the cover open, doubles as a privacy wall. It is listed as compatible with in-ground spas and swim spas, at any spa height.
The compromise: square or rectangular covers only. Spas with radius corners larger than 12 inches need Cover Valet’s XL Side Mount Bracket, sold separately.
Buy it if: your cover is up to 91 inches and the tub is rectangular.
Skip it if: the tub is round, or you can’t screw into the cabinet.
Cover Valet Pro: best for wide covers
Identity check: Cover Valet lists the Pro as a separate model from the standard Cover Valet. The linked listing is titled “Cover Valet Pro.”
Why it fits: it handles square or rectangular covers up to 104 inches and adds a full-width center bar across the cover seam. Cover Valet describes all-aluminum construction, dual gas shocks, and hardware included for cabinet or deck mounting. Rear clearance is 6 to 8 inches.
The compromise: same shape limit as the CV250, and the same XL bracket for radius corners (Cover Valet lists a 48-inch bracket for the Pro).
Buy it if: your cover is wider than 91 inches.
Skip it if: a 91-inch cover fits you, since the CV250 covers that case.
Cover Caddy: best for round or odd-shaped covers
Identity check: Cover Valet sells the Caddy as an undermount lifter. The linked listing is titled “Cover Caddy Cover Valet Hot Tub Spa Cover Lifter.”
Why it fits: Cover Valet lists it for round, octagonal and large-radius or cut-corner spas, up to a 120-inch cover. The base plate goes under the spa, so nothing screws into the cabinet or deck. It is gas-spring assisted, and a swim spa kit is available for spas up to 55 inches tall.
The compromise: it needs 36 inches of rear clearance, far more than the cabinet-mount models, and it is listed for spa heights of 30 to 41 inches. It is not listed as compatible with in-ground spas.
Buy it if: your cover is round or irregular and you have room behind the tub.
Skip it if: the tub sits against a fence or wall.
Cover Rx: best for rotomolded and smaller tubs
Identity check: Cover Valet’s Cover Rx page names it as an undermount lifter for rotomolded and soft-sided tubs. We could not match an Amazon listing to this exact name, so the link is a labeled Amazon search.
Why it fits: it works with square, rectangular, octagonal or round covers up to 96 inches, on tubs 24 to 38 inches tall, with gas-spring assist and 18 inches of rear clearance. Cover Valet says the install plate lets you choose which side of the spa it goes on.
The compromise: not listed for in-ground spas or swim spas, and the height range stops at 38 inches.
Buy it if: your tub is rotomolded or small and drilling into it isn’t an option.
Skip it if: your tub is taller than 38 inches or your cover is larger than 96 inches.
Cover Valet Cover Rock-It: best no-drill option for rectangular tubs
Identity check: The linked listing is titled “Cover Valet Cover Rock-It Hot Tub Cover Lift, Gray, Rectangular, 96 Inches.” Cover Valet’s own page lists the model for covers up to 100 inches, so confirm the size on the listing.
Why it fits: the under-spa plates are held in place by the spa’s weight, so there is no drilling. Cover Valet says the cover folds back behind the spa and stays off the ground, which cuts wear on the cover. Tub height 30 to 44 inches, 18 inches of rear clearance, 3.5 inches of side clearance.
The compromise: no gas shock, so you do the lifting. Not listed for in-ground or swim spas.
Buy it if: you have a rectangular tub and want a no-drill lifter without paying for gas shocks.
Skip it if: the cover is heavy and you want assisted lifting.
Cover Valet Cover Ex: best for tight rear clearance
Identity check: Cover Valet’s Cover Ex page lists all-aluminum construction with reinforced aluminum mounting brackets. We could not match an Amazon listing to the exact model, so the link is a labeled search.
Why it fits: it needs 12 to 15 inches of rear clearance, handles covers up to 104 inches, and offers two mounting positions. It screws into the cabinet.
The compromise: no gas shock, 4 inches of side clearance, and Cover Valet lists it as not compatible with in-ground spas.
Buy it if: you have limited space behind the tub and a cabinet you can mount to.
Skip it if: you want gas-assisted lifting.
How to choose
- Measure the cover, not the tub. Maximum cover size is the first filter: 91 inches for the CV250, 96 for the Rx, 100 for the Rock-It, 104 for the Pro and Ex, 120 for the Caddy.
- Check the shape. Round, octagonal or large-radius covers narrow the field to the Cover Rx and Cover Caddy.
- Measure behind and beside the tub. Rear clearance runs from 6 inches to 36 inches across these models.
- Decide whether you will drill. The CV250, Pro and Ex screw into the cabinet; the Caddy, Rx and Rock-It mount underneath.
- Check tub height. The undermount models list height ranges (24 to 44 inches); the CV250 and Pro list all heights.
- Look for the XL bracket need. Radius corners larger than 12 inches need a separate bracket on the CV250 and Pro.
The lifter doesn’t change how you care for the water under the cover. For testing, see the hot tub test strips and kits guide .
Sources
- Cover Valet (CV250 and CV400)
- Cover Valet-Pro
- Cover Caddy
- Cover Rx
- Cover Rock-It
- Cover Ex
Specifications were checked against these pages on October 22, 2026. This is researched buyer analysis without hands-on testing; confirm the size and model on the listing before ordering.
FAQ
What is the best hot tub cover lifter?
For most square or rectangular hot tubs, the Cover Valet CV250 (covers up to 91 inches). Step up to the Cover Valet Pro for a cover up to 104 inches, or choose an undermount model such as the Cover Rx or Cover Caddy if the tub is round or you don’t want to drill into the cabinet.
Will a cover lifter fit a round hot tub?
Not every one. Cover Valet lists the CV250, Pro, Cover Ex and Rock-It for square or rectangular covers only. The Cover Rx and Cover Caddy are listed for all cover shapes.
How much space do I need behind the tub?
It varies by model. Cover Valet lists 6 to 8 inches for the CV250 and Pro, 12 to 15 inches for the Cover Ex, 18 inches for the Rock-It and Rx, and 36 inches for the Cover Caddy.
What warranty do Cover Valet lifters have?
Cover Valet states a five-year warranty covering defects in materials or workmanship on its cover lifters, with repair or replacement at the maker’s option.