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Rheem HotWave 1800 W Tankless Electric Multipurpose Hose Sprayer
Rheem HotWave 1800 W Tankless Electric Multipurpose Hose Sprayer
Rheem HotWave 1800 W Tankless Electric Multipurpose Hose Sprayer
Rheem HotWave 1800 W Tankless Electric Multipurpose Hose Sprayer

Rheem HotWave 1800 W Tankless Electric Multipurpose Hose Sprayer

Meet the Rheem HotWave 1800 W Tankless Electric Multipurpose Hose Sprayer—the compact, power-packed solution for warm water on demand right at your garden hose. Engineered for resi…

Rheem MPN HTW018120
Sold Locally Only

This product isn’t sold on our website — see your local hardware store.

Typical Store Price i
Typical store price: low $152.99, average $179.99
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About Product Overview

Meet the Rheem HotWave 1800 W Tankless Electric Multipurpose Hose Sprayer—the compact, power-packed solution for warm water on demand right at your garden hose. Engineered for residential use, this inline heater delivers reliable warmth when you need it most, turning chilly outdoor chores into comfortable, efficient tasks.

With an 1800-watt heating element and 120-volt operation, HotWave can provide water up to 115°F, giving you a practical range for washing cars, clearing grime from patios, or rinsing off pets after a muddy hike. The tankless design means there’s no waiting for a heated tank and no bulky equipment to store—just continuous, on-demand warmth as you spray.

Key benefits

  • On-demand warmth — instant heating up to 115°F for more effective cleaning in cooler weather.
  • Tankless convenience — a streamlined inline unit that eliminates the need for a storage tank.
  • Compact footprint — measures 7" (H) x 3" (W) x 10" (D), designed to fit neatly in most outdoor setups.
  • Simple power source — 120V operation at 15A, plug-and-use with your standard outlet.
  • Bottom water connection — straightforward integration with your existing hose bib and piping.
  • Warranty — 1-year limited parts and labor for peace of mind.
  • Safety note — this unit does not include an integrated temperature/pressure relief valve; plan compatible plumbing and follow installation guidelines to ensure safe use.

Ideal uses and scenarios

  • Car washing in cooler months with warmer water for easier stain and dirt removal.
  • Decks, siding, and outdoor furniture cleaning where a quick warm rinse boosts drying and finish quality.
  • Pet baths after outdoor adventures, offering a gentler clean with comfortable, warm water.
  • Rinsing gardening tools, boots, and muddy gear without dragging out a separate heater or bucket system.
  • Post-paint cleanup or messy outdoor projects where warm water speeds up residual wash-off and reduces residue.

Who this is for

Rheem HotWave is ideal for homeowners and DIY enthusiasts who frequently clean outdoor spaces, wash vehicles, care for pets, or maintain garden equipment—and want the benefit of warm water without a bulky water heater. Its compact size and simple 120V setup make it a practical upgrade for any patio, driveway, or backyard shed.

Specifications at a glance

  • : 1800 W
  • : 120 V
  • : 15 A
  • : 115°F
  • : 54°F
  • : Yes
  • : Bottom
  • : 1 year limited (parts and labor)

Transform your outdoor cleaning routine with the Rheem HotWave 1800 W Tankless Electric Multipurpose Hose Sprayer—where warm water meets practical, plug-and-play performance.

The Details Specifications

Brand Rheem
SKU 4018934
UPC 091654928642
Unit 0
Case Pack Quantity 6 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 4 × 13 × 15
Weight 6 lbs
Cubic Feet 0.57557 ft³
Country of Origin CHINA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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