US
Eemax

Eemax LavAdvantage SPEX90T Tankless Water Heater

  • 9000 watts at 277 volts, corded electric
  • 140 F maximum temperature, microprocessor control
  • 1/2 inch copper compression fittings, rear or bottom electric entry
  • Hot or cold water feed, works as an in-line booster
  • 5.25 x 10.75 inches, 4 pounds, wall mount
  • 1 Year Parts warranty, made in the United States
  • 99 percent efficient per listing

Updated 20 days ago · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A compact booster for buildings wired for the higher commercial voltage, cutting the wait for hot water at a sink or hand shower. Flow rate is not listed, so sizing it for a full shower is guesswork.

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ASIN: B076PXW8ZYModel: LavAdvantage SPEX90TCategory: Water Heaters

Overview

Not a storage tank, the Eemax LavAdvantage is a small wall-mounted tankless heater that warms water as it flows to a sink or hand shower. A microprocessor sets the temperature, and it can take a cold feed or boost hot water arriving from a distant tank.

Booster mode is the smart part: it heats at once, then backs off its power as hot water from the main tank arrives, so the wait at a distant sink disappears. The listed voltage is a commercial supply, so check your panel before ordering.

Who it's for

Facility managers with a remote lavatory or bar sink that takes ages to run hot get heat right at the tap. Homeowners without a matching supply voltage should look at a lower voltage model.

Pros and cons

Pros
  • Heats at once, then tapers as tank water arrives
  • Accepts hot or cold feed
  • Microprocessor temperature control
  • Compact wall mount
Cons
  • Flow rate not listed
  • Short parts-only warranty
  • Commercial voltage requirement

Performance notes

Delivered temperature depends on wattage against flow: at a low trickle the element raises water a lot, and at higher flow the rise shrinks. In booster mode the microprocessor cuts power as warm water from the tank reaches the unit, so it only works as hard as the incoming temperature requires.

Specifications

BrandEemax
ModelLavAdvantage SPEX90T
Dimensions & fit
Item Dimensions W X H5.25 x 10.75 inches
Item weight4 pounds
Capacity & performance
Maximum Temperature140 F
Wattage9000 watts
Temperature controlMicroprocessor, thermostatic
Power & efficiency
Power SourceCorded electric
Voltage277 volts
Efficiency99 percent
Construction & materials
Material TypeCopper
ColorWhite
Compatibility & installation
Mount typeWall
Included components
Included ComponentsTankless water heater
Unit Count1 Count
Warranty & support
Manufacturer Warranty Description1 Year Parts
Other details
Water connection1/2 inch copper compression
Electric entryRear or bottom
FeedHot or cold
Country of originUnited States
Style NameLavAdvantage

Frequently asked questions

Can the Eemax LavAdvantage run a full shower?

The listing mentions hand-held showers, but no flow rate is given, so a full-flow shower cannot be confirmed.

Is the Eemax SPEX90T a whole-house heater?

No. The listing places it at kitchen or bar sinks, hand showers, pool houses, spare bedrooms and vacation homes, or as a booster for an existing tank.