Finding a freestanding air tub with a heater means balancing size, jet type, controls and installation needs. Below is a concise comparison table of top models chosen for their inline heaters, combined whirlpool and air bubble systems, and freestanding designs.
| Product | Key Features | Size / Capacity |
|---|---|---|
| WOODBRIDGE BJ400 | Whirlpool + Air Bubble, Inline Heater, LED Control | 72″ x 35-3/8″ — 65 Gallons |
| WOODBRIDGE BJ200 | Whirlpool + Air Bubble, Inline Heater | 66-1/2″ x 31-7/8″ — 60 Gallons |
| WOODBRIDGE BJ100 | Whirlpool + Air Bubble, Inline Heater, LED Control | 59″ x 31-1/2″ — 41 Gallons |
| WOODBRIDGE BJ-500 | Whirlpool + Air Bubble, Adjustable Speed Air Blower, Inline Heater | 72″ x 35-3/8″ — 69 Gallons |
| Empava PRO 71″x48″ | Dual Hydro & Air Massage, Thermostatic Heater, Chromotherapy | 71″ x 48″ — Couples-Sized Soaking Well |
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WOODBRIDGE 72″ Whirlpool & Air Heated Tub (BJ400)
This freestanding acrylic tub features a combined whirlpool and air bubble system and an inline heater controlled via an LED panel. The exterior dimension is 72″ x 35-3/8″ with an effective capacity of 65 gallons. Seating dimensions provide ergonomic length and width for a single bather.
Relevant listed specifications include water depth to overflow (14-1/2″) and the ability to set and maintain water temperature on the LED control. The dual jet systems aim to provide both targeted massage and full-body bubble therapy. This model suits larger bathrooms requiring a deep soaking tub with extended warm soak capability.
WOODBRIDGE 66.5″ Whirlpool & Air Tub (BJ200)
The BJ200 balances length and capacity at 66-1/2″ x 31-7/8″ with a 60-gallon capacity. It combines whirlpool jets and air bubble nozzles and includes an inline heater to extend soak times without constant hot-water topping.
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Seating dimensions are geared toward comfortable recline. Water depth to overflow is listed at 14″. The model highlights combined therapy modes for muscle relief and relaxation while maintaining a mid-large footprint that can fit many freestanding layouts.
WOODBRIDGE 59″ Whirlpool & Air Tub (BJ-100)
The BJ-100 is a more compact freestanding tub at 59″ x 31-1/2″, with a 41-gallon effective capacity and 13-3/4″ water depth to overflow. It retains the whirlpool and air bubble combo along with an inline heater and LED control panel for temperature settings.
Seating dimensions are specified for a concise bathing position. The smaller footprint is suitable for tighter bathrooms or where a freestanding tub is desired but space is limited. The inline heater supports longer soaks without continuous hot-water topping.
WOODBRIDGE 72″ Adjustable Air Blower Tub (BJ-500)
The BJ-500 is a large freestanding model (72″ x 35-3/8″) with a 69-gallon capacity and an adjustable speed air blower. It combines whirlpool and air bubble jets with an inline heater and display control panel for temperature and blower settings.
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Power requirements are noted as a dedicated 120V 30AMP breaker. The model is intended for users who want variable bubble intensity plus heated soaking. Seating length and water depth (14-1/2″) support deep immersive soaks.
Empava PRO 71″x48″ Dual Hydro & Air Spa Tub
The Empava PRO is a couples-sized freestanding tub at 71″ x 48″ featuring a dual hydro and air massage system with 12 hydrotherapy jets and 16 ultra-thin air jets. It includes a thermostatic water heater with a temperature range of 77°F–104°F and an auto shut-off at 104°F.
Chromotherapy lighting is included for ambiance. The design emphasizes ergonomic contours to fit two adults and combines deep-tissue hydro jets with full-body air bubble therapy. The thermostatic heater maintains a stable soak temperature for extended sessions.
Buying Guide: Choosing A Freestanding Air Tub With Heater
Selecting a freestanding air tub with a heater requires assessing space, plumbing/electrical requirements, jet configuration and long-term use. Use the following considerations to compare options effectively.
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1. Size, Shape, And Capacity
- Measure Bathroom Footprint: Confirm tub exterior dimensions, clearance for installation, and access through doors/hallways.
- Capacity vs. Water Use: Larger tubs (60+ gallons) provide deeper soaks but use more water and require longer heating.
- Seating Dimensions: Check listed seating length and width to ensure comfort based on your height and preferred recline.
2. Heating System Types
- Inline Heater: Heats circulating water to maintain temperature, enabling longer soaks without adding hot water.
- Thermostatic Heater: Maintains a target temperature and may include safety limits. Useful for consistent temperature control, especially for couples.
- Power Requirements: Many heated tubs require dedicated circuits (e.g., 120V 30AMP); verify home electrical capacity and professional installation needs.
3. Jet Systems And Therapy Modes
- Whirlpool (Hydro) Jets: Provide targeted pressure for muscle relief. Look at number and placement of hydro jets for coverage.
- Air Bubble Jets: Offer gentle full-body massage and are often adjustable. Adjustable speed blowers allow varying intensity.
- Combined Systems: Models with both hydro and air jets provide diverse therapy options; confirm they can operate independently or simultaneously.
4. Controls, Maintenance, And Safety
- Control Panel: LED or display panels allow temperature setting and jet control. Verify intuitive layout and waterproofing standards.
- Cleaning And Hygiene: Jet systems may require periodic cleaning. Look for accessible nozzles and clear maintenance instructions.
- Safety Features: Thermostatic auto shut-off and overflow depth specs help prevent overheating or spills. Confirm compliance with local electrical codes.
5. Installation And Technical Requirements
- Plumbing Access: Freestanding tubs need floor drains or remote waste installations—confirm drain type and compatibility.
- Electrical Needs: Heated tubs and blowers often need dedicated breakers. Plan for licensed electrician installation.
- Structural Support: Ensure floor can support tub weight when filled (surface weight includes water and occupants).
6. Comparison Perspectives
- Space-Constrained vs. Spacious Bathrooms: Compact models (e.g., 59″ tubs) fit smaller rooms; larger models and double-tubs suit master baths and couples.
- Intensity Preference: Choose adjustable air blowers or more hydro jets for stronger massage; air-only tubs give gentler relaxation.
- Temperature Control Needs: Thermostatic heaters (Empava) offer precise ranges and safety cutoffs; inline heaters (WOODBRIDGE models) extend warmth for long soaks.
- Finish And Aesthetics: Drain and trim finishes (matte black, brushed gold) may be offered; match trim to bathroom fixtures for cohesive design.
7. Long-Term Considerations
- Operating Costs: Larger tanks require more heated water and more energy to maintain temperature.
- Serviceability: Check parts availability for pumps, heaters and control panels and whether the brand provides support.
- Resale And Layout Flexibility: Freestanding tubs are visually appealing for resale, but ensure future owners will have compatible space and systems.