StoreDeal.ai store
Shop
  • Deals
  • Deal checker
  • Black Friday
  • Buying guides
  • Brands
  • Stores
Travel
  • Flight deals
  • Hotel deals
Company
  • Research
  • Press
  • Use in AI assistants
  • Contact
  • deal.ai apps
Black Friday 2026
  • Walmart
  • Best Buy
  • Target
  • TVs
  • Laptops
  • Headphones
  • Apple
  • Gaming
  • Vacuums
  • Kitchen
  • Toys
  • Smartwatches
  • Tablets
  • Furniture
  • Mattresses
© Deal.ai Inc.·2222 Ponce de Leon Blvd, Miami, FL 33134·support@deal.ai
TermsPrivacy
Deal.ai
E
Electric Tankless Water Heater

Electric Tankless Water Heater

4.6(18 ratings)

Best price now

$249.99at AirtherealChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Airthereal

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Enter to send, Shift+Enter for a new line

Price facts

  • Last seen at $249.99 at Airthereal on Nov 9.

Our take on the Electric Tankless Water Heater

This is a compact electric tankless water heater that heats water on demand instead of storing it in a tank. It is roughly 90% smaller than a conventional tank unit, so it fits under a sink or in a tight utility space. It suits point-of-use jobs like a kitchen sink, an extra bathroom or a small apartment where a full tank is overkill. Against tank rivals it gives endless hot water with no standby losses, but it needs a dedicated electrical circuit and its flow rate limits it to one outlet at a time.

Best forPoint-of-use sinks and extra bathroomsSmall apartments and cabinsUnder-sink or tight utility spacesHouseholds replacing a failing tank heater
Pros
  • Heats water on demand with no storage tank
  • About 90% smaller than a tank heater
  • No standby heat loss from a stored tank
  • Endless hot water without preheating
  • Simple wall-mounted install in tight spaces
Cons
  • Needs a dedicated electrical circuit
  • Flow rate limits it to one fixture at a time
  • Output temperature drops with high flow
  • Install cost can exceed the unit itself

Electric Tankless Water Heater prices at every store

  • AirtherealNew

    In stockReturn policy

    $249.99Checked Nov 9
    Visit Airthereal

What reviewers say

  • 4.6 / 518 ratings

Owners rate it well overall, with 4.6 out of 5 from 18 ratings. They like the small footprint and steady on-demand hot water for a single sink or bathroom. Complaints center on electrical requirements and reduced output at higher flow.

What people mention
  • SizePraisedOwners like how small it is and that it tucks into tight spaces.
  • Hot waterPraisedReviewers say it delivers hot water quickly for a sink or single bathroom.
  • Electrical setupCriticisedBuyers note it needs a dedicated circuit, which adds to the install.
  • Flow rateMixedOutput holds up for one fixture but drops when demand rises.

About the Electric Tankless Water Heater

This electric tankless water heater heats water on demand instead of storing it in a tank. It is wall-mounted and uses 90% less space than a traditional tank water heater. It suits kitchens, additional bathrooms, or any spot where hot water is needed.

Its self-modulating temperature technology uses energy only while water is running. There is no preheating, and the output temperature stays steady. It can be installed anywhere the cold and hot water pipes are already in place. It is non-scaling, so it needs no special maintenance.

Type
Electric tankless, wall-mounted
Power
6.5 kW, 8 kW, 9 kW, 14 kW, 18 kW and 27 kW ratings in the sizing guide
Space
90% smaller than a traditional tank water heater
Outlet temperature
104°F (6.5 kW); 108°F (8, 9, 14, 18 and 27 kW)
Flow, 41°F inlet
6.5 kW: 0.7 GPM; 8 kW: 0.7 GPM; 9 kW: 0.9 GPM; 14 kW: 1.4 GPM; 18 kW: 1.7 GPM; 27 kW: 2.5 GPM
Flow, 59°F inlet
8 kW: 1.0 GPM; 9 kW: 1.2 GPM; 14 kW: 1.9 GPM; 18 kW: 2.4 GPM; 27 kW: 3.5 GPM
Flow, 77°F inlet
6.5 kW: 1.5 GPM; 8 kW: 1.6 GPM; 9 kW: 2.0 GPM; 14 kW: 2.4 GPM; 18 kW: 3.8 GPM; 27 kW: 5.5 GPM
Typical use
Low-flow faucet to kitchen faucet at 6.5 to 9 kW; kitchen faucet to shower at 14 kW and up, depending on inlet temperature
Installation
Anywhere with cold and hot water pipes installed in advance
Maintenance
Non-scaling; no special maintenance required

Questions and answers

Does it need a special electrical circuit?
Yes. It is an electric unit and needs its own dedicated circuit sized to the model. Check the amperage and breaker requirement before buying.
Can it run a whole house?
No. It is a point-of-use heater built for one sink, an extra bathroom or a small space. Whole-home demand exceeds its flow rate.
Can it run a shower and a sink at once?
Usually not well. Running two fixtures at once splits the flow and lowers the output temperature.
How is it different from a tank heater?
It heats water only when you open the tap and has no storage tank, so it is far smaller and avoids standby heat loss. A tank heater can serve several fixtures at once.
What comes in the box?
The heater unit and mounting hardware. Plumbing fittings and electrical parts are typically bought separately.
Where is the Electric Tankless Water Heater cheapest?
At Airthereal, for $249.99, as of our latest check.
What do buyers say about the Electric Tankless Water Heater?
Rated 4.6 out of 5 from 18 ratings.

More tankless water heaters

  • G
    GE06SNHPDG Tankless electric water heater
    GE06SNHPDG Tankless electric water heater
  • T
    Tankless Electric On Demand Hot Water Heater - 120V | 3.5kW
    Tankless Electric On Demand Hot Water Heater - 120V | 3.5kW
  • T
    Titan 27 W Tankless Electric Tankless Water Heater
    Titan 27 W Tankless Electric Tankless Water Heater
  • G
    GE Tankless Electric Water Heater
    GE Tankless Electric Water Heater
  • T
    Titan 11.8 W Tankless Electric Tankless Water Heater
    Titan 11.8 W Tankless Electric Tankless Water Heater
  • T
    Tankless Electric On Demand Instant Hot Water Heater - 240V | 8kW
Tankless Electric On Demand Instant Hot Water Heater - 240V | 8kW
  • T
    Tankless Electric On Demand Hot Water Heater - 120V | 4.5kW
    Tankless Electric On Demand Hot Water Heater - 120V | 4.5kW
  • 2
    27 KW TANKLESS WATER HEATER/240V
    27 KW TANKLESS WATER HEATER/240V