Universal Inline Bath Heater Kit, 1.5KW, 110V, 7.0 in. x 1.5

Turn every soak into a consistently warm escape with the Universal Inline Bath Heater Kit. Designed to heat water as it travels through your whirlpool or spa line, this compact inline solution from Balboa Water Group (trusted Whirly Bros heritage) delivers inviting warmth the moment you step into the tub. With a 1.5KW element and standard 110V power, you don’t wait for preheat—you enjoy stable, comfortable heat session after session.

Why this inline heater stands out

• Inline heating, no bulky unit in the tub: Heat travels with the water flow, delivering even warmth without clunky equipment inside the tub shell.
• Broad compatibility with a retrofit mindset: Versatile fit for most standard 1.5" union tail fittings and a 7" flange-to-flange spacing, making it a practical upgrade for many existing systems.
• Smart, controlled heating: A 1.5KW element maintains a comfortable bath temperature automatically, with an integrated thermostat capped at 104°F to prevent overshoot.
• Durable, spa-grade construction: A stainless steel housing pairs with an Incoloy heating element to resist the rigors of regular spa use and treated-water environments.
• Easy installation, value for pros and DIYers: Included fittings streamline field upgrades for a wide range of spa brands.
• Safety you can trust: UL recognized for safety standards, providing reassurance with every soak.
• Strong warranty and broad compatibility: 1-year comprehensive warranty and direct compatibility with brands like American Standard, Safe-T-Heater, Hydro-Quip Compact Series, Jacuzzi RapidHeat, and Pure Heat, plus broad compatibility with popular Whirlpool tubs.

How it benefits you in real life

• Consistent warmth from the moment you enter: Maintain a steady bath temperature automatically, even on cold days or when jets turn on.
• Eliminate cold-start frustration: No more waiting for the water to heat up as you fill—inline heating delivers warmth on demand.
• Ideal for retrofits and upgrades: Replace aging inline heaters or modernize an older whirlpool system without major renovations.
• Discreet, reliable performance: The inline design keeps heating out of sight while delivering dependable heat for years.

Key specifications

• 1.5KW
• 110V (standard residential supply)
• 7" flange-to-flange, compatible with standard fittings
• Designed for 1" SCH 40 unions (installation notes apply)
• Stainless steel housing with Incoloy heating element
• Automatic smart thermostat with a 104°F limit
• UL recognized
• 1 year

Upgrade your bath experience with a heater engineered for real-world use: dependable warmth, straightforward installation, and compatibility across a broad spectrum of popular brands. The Universal Inline Bath Heater Kit delivers consistent heat, easy retrofitting, and peace of mind—so every soak feels like a spa day.