Hudson Bay Spas Outdoor Hot Tubs – 2, 4, 5, and 6 Person Models Explained

Thinking about adding a hot tub to your backyard but not sure which size actually fits your life? Hudson Bay outdoor hot tubs come in 2, 4, 5, and 6-person configurations — and picking the wrong one is easier than you'd think. This guide walks you through every model, breaks down what sets each apart, and helps you land on the right choice. Whether you're soaking solo after work or hosting the whole neighborhood on a Saturday night, you'll find your answer here. You can also browse our full hot tub buying guides for more help getting started.

Hudson Bay Spas has been making plug-and-play hot tubs for decades. Their tubs are known for being affordable, straightforward to set up, and built for everyday backyards — not just luxury estates. You don't need a contractor or a custom concrete pad to get one running. That's a big part of their appeal to backyard owners who want a real spa experience without the resort price tag.

But "easy to own" doesn't mean "zero planning required." Before you spend anywhere from $3,000 to over $8,000, it's worth understanding the full picture — from model differences and jet counts to electrical requirements and long-term maintenance. Let's get into it.

Sizing Up the Hudson Bay Lineup

Hudson Bay makes four core residential models. Each one targets a slightly different household size and use pattern. Understanding the differences before you buy saves you from a costly return — or worse, years of wishing you'd gone bigger (or smaller). If you're still deciding on shape as well as size, this breakdown of hot tub shapes and types is worth a quick read first.

The 2-Person HB15

The HB15 is the entry point. It runs on a standard 120V household outlet — no electrician needed. That makes it the fastest path from "thinking about it" to "actually soaking." The footprint is small enough to fit on most decks. You get 15 jets, basic hydrotherapy (using water pressure to massage muscles), and a simple control panel. It's not a feature powerhouse, but for a couple looking for a quiet evening soak, it delivers exactly what it promises.

The 4-Person HB17

Step up to the HB17 and you get more seating, slightly more jet coverage, and a bigger interior. It still runs on 120V in many configurations, though some setups benefit from a 240V upgrade for faster heating. The HB17 is the sweet spot for small families or couples who occasionally have guests over. It's not huge — you won't be throwing a party in it — but four adults fit comfortably without feeling cramped.

The 5-Person HB19

The HB19 is where Hudson Bay's lineup gets serious. It requires a 240V dedicated circuit (a hardwired connection installed by an electrician), which means a bit more upfront cost and planning. In return, you get faster heating, stronger jet pressure, and a tub that can genuinely seat five adults. This is the most popular model in the Hudson Bay range, and it shows up in most user reviews as the best balance of size and value.

The 6-Person HB25

The HB25 is the flagship. Twenty-five jets, a larger footprint, and enough room that six people can sit without bumping elbows. It's also the heaviest and most expensive model to run. At full capacity with all six seats occupied and jets running, your energy costs will be noticeably higher than the smaller models. If you regularly entertain outdoors, it earns its keep. If it's mostly going to be two of you, you're paying for space you won't use. According to the CDC's guidance on residential hot tubs, water hygiene becomes more important as tub size and user count increases — something worth factoring into your decision.

Getting Your Hot Tub Set Up the Right Way

Installation is where a lot of buyers get surprised. The tub itself arrives on a pallet, but everything that goes under and around it is your responsibility. A full walkthrough of how to install a hot tub in your backyard covers the whole process in detail, but here are the key points specific to Hudson Bay models.

Choosing the Right Location

Pick a spot that's level, accessible by hose, and close enough to your electrical source. Privacy matters too — most people don't love soaking in full view of the street. A fence, a gazebo, or some tall plantings can help. If you're thinking about a gazebo shelter over your tub, the Sunjoy Chatham Steel Hardtop Gazebo is one option worth considering for that combination of coverage and style.

Think about drainage, too. When you drain and refill your tub every three to four months, that water has to go somewhere. Avoid draining directly onto a neighbor's property or toward your foundation. A gentle slope toward a lawn or garden bed works well.

Pro tip: Place your hot tub within 10 feet of your electrical panel if possible — longer runs mean higher electrician costs and potential voltage drop on 240V systems.

Electrical and Surface Requirements

The HB15 and HB17 can run on a 120V outlet, but the HB19 and HB25 require a dedicated 240V, 50-amp circuit with a GFCI (ground fault circuit interrupter — a safety device that cuts power if it detects a wiring fault). Hire a licensed electrician for this. It's not the place to cut corners.

Your surface needs to support the weight. A full hot tub — water, tub, and occupants — can weigh over 4,000 pounds for the larger models. A reinforced concrete pad or a deck rated for that load is the right call. Never place a filled hot tub on an unprepared lawn or a deck that wasn't designed for the weight. If you're thinking about adding steps for easier entry, this guide on building hot tub steps shows you a straightforward DIY approach.

Easy Ways to Get More from Every Soak

Owning a hot tub is one thing. Getting consistent value out of it is another. A few habits make a real difference in both the experience and your operating costs.

Water Care Basics

Test your water two to three times a week with a simple test strip. You're watching for pH (ideally 7.4–7.6), alkalinity (80–120 ppm), and sanitizer levels. Balanced water protects the jets, the shell, and your skin. Unbalanced water is the number one reason hot tubs develop odors, cloudy water, or foam — and it shortens the life of your equipment. Drain and refill completely every three to four months, or sooner if you use the tub heavily. Following proper hot tub safety rules and guidelines covers water chemistry as well as the health side of hot tub use.

Accessories Worth Adding

A good thermal cover (an insulated lid that traps heat) is almost mandatory. Hudson Bay tubs come with a cover, but aftermarket covers with higher R-values (insulation ratings) can cut your heating costs significantly. A cover lifter arm makes daily use much easier — you won't skip a soak just because pulling the cover off feels like a chore.

Floating aromatherapy dispensers, LED lighting kits, and waterproof Bluetooth speakers are popular upgrades. None of them are essential, but they do make the experience more enjoyable on a cool evening. If you're building out a full outdoor living setup around your tub — fire pit, seating, lighting — setting up a fire pit nearby creates a great complement to late-night soaks.

Worth knowing: Running your hot tub on a timer — heating to temperature during off-peak electricity hours — can reduce your monthly energy bill by 15–25% depending on your utility rates.

Mistakes That Cost You Money and Comfort

Most hot tub regrets come down to a handful of predictable missteps. Here's what to watch for so you don't end up in the same situation.

Skipping the Water Chemistry

This is the most common mistake, and it's also the most expensive. Letting your pH drift too high or too low doesn't just create unpleasant water — it corrodes jets, degrades the shell lining, and voids many manufacturer warranties. You don't need a chemistry degree to manage it. A basic test kit and a 10-minute weekly routine is all it takes. Think of it like lawn care: a little attention each week beats a major fix every few months. Speaking of which, if you're already spending time on regular yard maintenance like mulching and bagging leaves, adding hot tub water testing to the routine is easy.

Choosing the Wrong Size

Bigger isn't always better. A 6-person tub in a household of two means more water to heat, more chemicals to balance, and more surface area losing heat overnight — all for seats you rarely use. On the flip side, cramming four adults into a 2-person tub isn't a hot tub experience, it's just warm, crowded water. Be honest about how many people will realistically use it at once, on a typical day — not on the best possible day. This guide to hot tub sizes walks through the decision in more detail if you're still on the fence.

Also consider resale and removal. Larger tubs are harder to move and can be expensive to remove if you ever sell the property or change your mind. Removing a hot tub or spa from your backyard is a whole project in itself — worth factoring into your decision now.

When a Hudson Bay Hot Tub Makes Sense — and When It Doesn't

Hudson Bay tubs aren't the right answer for every situation. Knowing where they shine — and where they fall short — helps you make a clearer call.

Households That Get the Most Out of These Tubs

Hudson Bay hot tubs are a strong fit if you want a dependable, mid-range spa without the premium price of brands like Jacuzzi or Hot Spring. They work especially well for homeowners who:

• Use the tub three or more times per week, making the energy cost worthwhile
• Want a straightforward setup without custom plumbing or major construction
• Are buying their first hot tub and want a reliable introduction to the category

The plug-and-play models (HB15, HB17) are particularly good for renters or homeowners who might move within a few years, since they're easier to transport than hardwired units.

Situations Where You Might Want to Look Elsewhere

If you're looking for therapeutic-grade hydrotherapy — the kind used for serious muscle recovery — you may find Hudson Bay's jet pressure modest compared to medical-grade spa brands. If you want a fully customizable shell color, lighting system, and jet configuration, premium brands offer more personalization. And if your backyard space is extremely limited, even the compact HB15 has a footprint that rules out some decks and patios.

Finally, if you're in a very cold climate and plan to use your tub year-round, insulation quality matters a lot. Hudson Bay's insulation is adequate, but high-end brands with full-foam insulation (where the entire cabinet cavity is filled with expanding foam) will have noticeably lower heating costs in sub-freezing winters.

Frequently Asked Questions

Key Takeaways

• Hudson Bay outdoor hot tubs come in four models — HB15, HB17, HB19, and HB25 — each sized for a different household and use pattern, with the HB19 offering the best balance of capacity and value for most buyers.
• The HB15 and HB17 plug into standard 120V outlets, while the HB19 and HB25 require a dedicated 240V circuit installed by a licensed electrician.
• Consistent water chemistry testing is the single most important maintenance habit — neglecting it shortens equipment life and voids warranties faster than anything else.
• Size your tub to your realistic daily use, not your best-case scenario — a tub that's too large costs more to heat, more to maintain, and more to remove if you change your mind.