How To Install a Jetted Tub

Installing a jetted tub requires careful planning, from plumbing and electrical considerations to framing and support details. Whether you’re a seasoned do-it-yourself (DIY) enthusiast or working with a contractor, this guide will explain how to install a jetted tub.

Understanding Jetted Tubs and Their Requirements

Jetted tubs come in various types and sizes, with each tub having different plumbing and electrical requirements. Here are some of the most common types of jetted tubs:

• Air tubs: These use air jets for a gentler bathing experience.
• Combination tubs: These tubs offer both water and air jets.
• Whirlpool tubs: These use water jets for massaging instead of air jets.

Pre-Installation Planning For a Jetted Tub

Proper planning is key to a successful jetted tub installation and involves evaluating your space and selecting the right tub model.

Evaluating Your Bathroom Space

Jetted tubs are typically larger and heavier than standard bathtubs, so consider your available bathroom space and floor support capacity before installation. Measure the bathroom door widths, accounting for the tub surround and any decking you plan to install, and check for potential installation obstacles, such as other bathroom fixtures and windows.

If you’re unsure about your bathroom’s ability to accommodate a jetted tub, consult with a contractor to assess the space.

Choosing the Right Jetted Tub Model

When selecting a jetted tub, consider the following factors:

• Material (acrylic, cast iron, or fiberglass)
• Number and placement of jets
• Size and shape
• Style

Essential Plumbing Preparations for Jetted Tubs

Jetted tubs only work if you install their plumbing correctly, and you must align the waste plumbing with the tub drain. Here are some tips to prepare this plumbing:

• Obtain detailed installation specs for your chosen tub.
• Ensure the trap and waste pipe align exactly with the tub drain.
• Consider access from below for easier installation if possible.

If working from above, use extreme precision when roughing in the plumbing. Jetted tubs also often require larger supply lines than standard tubs, so keep the following in mind:

• Check the tub filler specifications for exact supply line location requirements.
• Many jetted tubs use ¾-inch supply lines instead of ½-inch ones.
• The ¾-inch lines supply water at more than twice the rate of ½-inch lines.

Wall-mounted fillers may require precise placement of supply lines, while deck-mounted options are usually more forgiving.

Electrical Requirements for Jetted Tubs

Jetted tubs have specific electrical needs that must be met for safe and proper operation. For jetted tubs, you should install Ground Fault Circuit Interrupter (GFCI)-protected receptacles for all electrical components and place receptacles in accessible locations for easy resetting. Consider using blank-front GFCIs or GFCI breakers in the electrical panel for convenience.

Jetted tubs may also require dedicated electrical circuits. Most need a dedicated 15-amp circuit for the pump, and, if present, the heater usually requires a separate 15-amp dedicated circuit. Make sure all circuits have the proper sizing according to the tub’s specifications.

Consult with a licensed electrician to ensure your electrical setup meets local codes and safety standards.

Framing and Support for Your Jetted Tub

Proper framing and support help extend the lifespan and improve the performance of your jetted tub.

Deck Construction

Follow these steps to build a sturdy deck for your jetted tub:

1. Determine the overall height of the deck from the tub’s specifications.
2. Subtract the thickness of finish materials, underlayment, and a ⅛-inch caulk joint.
3. Install level ledgers on existing walls where the deck will meet them.
4. Use exterior-grade plywood for the deck surface, typically ¾ inches thick.
5. Frame for a 12-inch by 18-inch access panel for the pump and heater.
6. Double-check that the deck is perfectly level and follow the manufacturer’s instructions for stud spacing and support.

Tub Surround Details

The tub surround enhances the bathtub’s appearance and protects the surrounding walls from water damage. Follow these tips during your tub surround installation:

• Install any tile underlayment on the tub deck before setting the tub.
• Leave the front knee wall open for access during installation.
• Tile the tub surround properly for a watertight and attractive finish.
• Use drywall, plywood, or tile backer to close off open walls.

Jetted Tub Installation

Follow these steps carefully for a successful jetted tub installation.

1. Prepare the Installation Area

Before setting the tub, install electrical receptacles for the pump and heater. Prepare the bedding material as specified by the manufacturer and place spacers for the tub lip, accounting for tile and underlayment thickness.

2. Set the Tub in Place

Carefully lower the tub into place, connecting the drain as you go. Make sure the tub is level and properly supported. Fill the tub with water to ensure full contact with the bedding material.

3. Connect Plumbing and Electrical Components

Once you’ve set the tub, connect the supply lines to the tub filler and wire the pump and heater to their respective circuits. Test all connections for leaks and proper function.

Jetted Tub: Finishing Touches and Final Steps

With the tub installed, you can install tile or other finish materials on the deck and knee walls as long as the area is waterproof. After installing the finishing touches, connect the tub filler. Follow the tub manufacturer’s instructions when performing this task, and test the filler for proper function. If you see any leaks, adjust the tub filler as needed. After completing these steps, schedule any required inspections before using your new jetted tub.

Jetted Tubs: Common Challenges and How To Overcome Them

If you have limited space, consider removing door frames or windows for the tub delivery. You could also use a crane or professional movers for upper-floor installations.

If floor support is inadequate, consult a structural engineer to assess and design reinforcements. Install additional joists or support beams as recommended, or consider an alternate location for your jetted tub if a reinforcement isn’t feasible.

Maintenance Tips for Your New Jetted Tub

Proper maintenance, from regular cleaning to annual inspections, will keep your jetted tub functioning well for years to come.

Regular Cleaning Routines

Keep your tub clean and hygienic by performing the following tasks:

• Clean the tub surface after each use.
• Run the jets with a cleaning solution monthly.
• Wipe down jets and fixtures to prevent mineral buildup.

Preventive Maintenance Measures

Regularly inspecting jets and plumbing connections can prevent issues before they start. Check electrical components for signs of wear and promptly address any unusual noises or performance issues. You may also want to consider scheduling annual professional maintenance to keep your jetted tub in top condition.