American Whirlpool · 400 Series
American Whirlpool 451 hot tub
Three seats, one of them a lounger you lie back in. Suits a couple, with room for one more.
- Seats: 3 seats
- Lounger: Lounger
- Size: 6′ 9″ × 5′ 4″
- Power: 240V
Price on requestWhat it costs
Free. Your price range, then one dealer near you.
Sit in it. 3 seats, one lounger.
- Comfort
- 3 headrests
What it costs.
Price
Price on requestThis maker doesn't post its prices, so we don't print one. Ask, and we'll send you the price range.
To keep it hot
Standby in California’s test, at the US average 18.19¢ per kWh. Heating fresh water and using the jets add to it.
What owners say.
From owner reviews and forums across American Whirlpool tubs, not just this model.
Owners like
- Price relative to premium competitors
- Dealer relationship and local service
- Large-footprint models valued for size
Owners complain about
- Thin, mostly unfavorable owner discussion
- Parts availability and lead time on older units
- Hard to get answers from MAAX
All themes, and complaint records
Owners like
- Price relative to premium competitors. Prospective buyers report American Whirlpool models (including the 471 and 481) quoted several thousand dollars below comparable Caldera and Hot Spring tubs. This is described as the brand's main draw.
- Dealer relationship and local service. The main positive in the manufacturer's own curated testimonials is the local dealer (responsiveness, making things right, long customer relationships) rather than the hot tub itself.
- Large-footprint models valued for size. The 982 is discussed as one of the largest tubs available, with a walk-down-the-middle layout cited as a reason to shortlist it.
Owners complain about
- Thin, mostly unfavorable owner discussion. Forum posters advising shoppers note there is little discussion of the brand online and that what exists skews unfavorable. One noted there is "not a lot of chatter about American Whirlpool."
- Parts availability and lead time on older units. A BBB complaint describes a MAAX swim spa more than 10 years old with a pump leak; the local dealer quoted several weeks to get the part shipped from the East Coast. Parts come through the dealer network, not direct.
- Hard to get answers from MAAX. BBB complaints describe difficulty getting answers from MAAX Spas on customer inquiries, which fits its dealer-first support model.
- Defective parts on sister brand Vita Spa. A BBB complaint describes a MAAX-built Vita Spa bought in August 2019 whose parts, made around summer 2021, were found defective and needed repair. Vita Spa is MAAX's lower-priced line, not American Whirlpool, so this bears on American Whirlpool only through the shared maker.
American Whirlpool as a company
American Whirlpool reviews and complaintsHot tub reviews by brand
How it’s built. The 8 build checks, in plain words.
The same eight checks we run on every brand, answered from American Whirlpool’s own documents. Tap one for what it means and the evidence.
Self-supporting shellDoes the shell hold itself up?Partly
Not foam-filled, but the frame and base carry the load.
American Whirlpool skips the poured-foam build, so the fiberglass-backed shell is not held up by set foam. The company credits the perimeter frame (steel on most series, treated wood on the 100) and the sealed ABS base as the support structure. It never claims the shell stands on its own.
Applies to: All models; frame material differs by series
Clamped plumbingAre the hoses glued and clamped?Not published
American Whirlpool doesn't publish this. Ask the dealer.
The factory parts list shows standard 2-inch glued PVC on the main lines with barbed take-offs for jets and air. Whether flexible hose is secured with stainless clamps at those barbs is the part that matters, and nobody has photographed it. Ask a dealer to open a cabinet.
Applies to: All models (MAAX-built spas in general)
Manifold-fed jetsDoes each jet get its own line?Not published
American Whirlpool doesn't publish this. Ask the dealer.
There is no cutaway, plumbing diagram or manifold claim from the company. The only drawing in the owner's manual is a generic equipment bay that leaves the jet plumbing out entirely. The way to settle it is to open a cabinet at a dealer and look.
Applies to: All models
Standard partsCan any repair tech buy the parts?Yes
Gecko controls and Waterway jets, parts anyone can stock.
Current tubs run a Gecko control pack sold under the POWERWORKS name, and older builds used Balboa. Jets come from Waterway and Pentair with published part numbers. Several independent suppliers in the US and UK carry the boards, pumps and jets, so any competent tech can work on it.
Applies to: All models; Gecko controls on current builds, Balboa BP on older MAAX builds
Compression-fitted jetsAre the jet bodies held by a nut, not glue?Partly
Some jet bodies bolt in with a nut; newer ones may press into a grommet.
Parts sold for American Whirlpool include body nuts and gaskets for its Storm and 200 Series jets. Newer bodies shared with Vita press into a rubber grommet with no nut. The maker doesn't say which current tubs use, and nothing shows glued bodies.
Applies to: All series
Adjustable jetsCan you turn each jet up or down?Yes
Most jets adjust. The small Euro jets are fixed.
Directional and rotating jets turn down or off, and the nozzles aim wherever you want them. Air controls on the lip and diverter valves shift water between zones. The footwell and shoulder Euro jets stay open because ozone feeds in there. The manual says never close every full-size jet at once.
Applies to: All models, for directional and rotating jets; Euro jets are fixed
Service networkCan someone near you fix it?Yes
Dealer-only service, 350-plus dealers, parts easy to find.
Warranty work goes through the dealer who sold you the tub, and the factory wants pre-approval for service where there is no authorized dealer nearby. Coverage is thinner than the giant brands in some regions. Parts are the easy part: at least six independent suppliers stock them.
Applies to: All models
American made?Built in Chandler, Arizona and Ottumwa, Iowa.Yes
Built in Chandler, Arizona and Ottumwa, Iowa.
Chandler, Arizona: Headquarters and main hot tub plant, about 100,000 sq ft (2016 report). Ottumwa, Iowa: 90,000 sq ft swim spa plant, former Universal Rundle site, opened 2021.
Applies to: All models; hot tubs are built in Chandler, Arizona, and swim spas reportedly at a second plant in Ottumwa, Iowa
The full American Whirlpool build-quality report, ranked against every brand →
Also on this model
Full-foam insulationIs it foamed all the way through?Other method
What you get.
400 Series. The core of the lineup, sold on targeted therapy seats (Zone Therapy, Comfort Collar, Foot Relief Zone, Shiatsu). The maker calls the 471 its most popular hot tub.
- Massage
- 29 jets on 1 jet pumpModerate massage: 3 HP continuous in all (estimated from the peak rating)
What stands out
- Steel frame and serviceable insulation. A zinc-coated steel sub-structure and the three-layer Northern Exposure system (copper-lined BlueMAAX fiber plus 3M Thinsulate) replace foam fill.
- Better lighting package. The 400 Series has Digital Color Optic lighting, illuminated drink holders and spa controls, and an outside status indicator light.
Similar tubs. Same size, any brand.
More like it:Tubs for 2 to 3Hot tubs with a loungerHot tub weightHot tub electrical requirements
The detailsAll 98 specs, the energy filing and every source
Every specification
Everything American Whirlpool publishes for the 451. The dot after a value opens the document it came from.
Size & capacity
Build & insulation
Water care
Feature guides:InsulationWi-Fi appsAudioLightingWhich features are worth paying for
Doesn’t have: 120V plug-in.
Energy filing
- Typical for its size
- 158 W (the middle of 77 tubs this size)
- Water in the test
- 214 gallons
Standby is what the tub draws just holding its temperature, measured to California’s test method ↗. Your bill depends on your weather, your rate and how often you soak.
Where American Whirlpool’s documents disagree
Two of its own documents give different answers. Check these against your quote.
- Ozone / clean zone® description
- The CleanZone® water purification system generates ozone or CleanZone® is a cartridge oxidizer that generates oxygen
- Shell color options / cabinet color options
- Shell: Storm Clouds, Silver Marble, Midnight Canyon, Smokey Mountain, Glacier Mountain, Tuscan Sun; cabinet: Resort Gray, Light Fog, Modern Mocha, Charcoal or shell: Storm Clouds, Silver Marble, Midnight Canyon, Smokey Mountain, Tuscan Sun; cabinet: Charcoal, Light Fog, Modern Mocha
Ask the dealer
American Whirlpool doesn’t publish the heater size, filter area, cover thickness or number of filters for the 451. Ask for them in writing.
What’s a good deal on the 451?
We send you the price range, by call, text or email: what a great deal, a good deal and market value look like. Then we introduce you to one American Whirlpool dealer near you, who reaches out knowing what you expect to pay.
Get a price on this tub
Free. Your price range, then one dealer near you.
Get a price on this tub Free price range, then one dealer