Could this be used to slowly heat a small above ground pool? Just wanting it warmer.

Funny how all of the answers here are probably not, I doubt it or I wouldn't. Don't answer the question if you don't actually know. I use the eco 8kw coupled to a standard water heater recirculation pump and it works well for 2000 gallon pool. I would say though 8 kw is minimum for this much water. I can maintain 80°F in ambient temp of 60° (nightly low) to high of 72°. I run it about 2-4 hours a day depending. Costs about $3 - $6 to run per day. Hope this is useful information.

will freezing weather damage it

As long as the water is able to run though the pipes it won't but the water won't be very hot. Only heats the water to a certain degree above original temp. Check the specs on the web site for more detail.

To replace a 40 gallon water tank heater with 40 amp fuse, is this a feabile diy project?

The EcoSmart 8 isn’t capable of replacing a 40 gallon water heater. The 40 gallon heater is designed to supply hot water to every faucet in the house. The EcoSmart 8 is a point-of-use water heater designed to supply heated water to only one faucet, and usually only a bathroom faucet.

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EcoSmart ECO 8 Tankless Water Heater, Electric, 8-kW - Quantity 1, 12 x 8 x 4

Product ID: 341370426

Details

Brand
EcoSmart
Capacity
2 gallons
Power source
Corded
Product dimensions
20.3W x 30.5H
Special features
Energy Design

⚡8 kW powerful heating

💧Up to 2 GPM flow rate

🛠️Threaded durable heating elements

Description

🔥 EcoSmart ECO 8: Power up your comfort, save space, and never wait for hot water again!

ENDLESS HOT WATER ON DEMAND - Say goodbye to cold showers with instant heating at your fingertips.
ENERGY EFFICIENT PERFORMANCE - Cut down utility bills and reduce your carbon footprint effortlessly.
COMPACT SPACE SAVING DESIGN - Fits seamlessly in tight spaces—perfect for modern minimalist homes and offices.
EASY MAINTENANCE WITH THREADED ELEMENTS - Quick, hassle-free replacement keeps your heater running like new.
LIFETIME WARRANTY ON ELECTRONICS ELEMENTS - Confidence backed by a lifetime guarantee for peace of mind.

The EcoSmart ECO 8 is a compact, 8-kilowatt electric tankless water heater designed for point-of-use applications like bathrooms and small sinks. Delivering up to 2 gallons per minute, it offers energy-efficient, on-demand hot water with durable, easy-to-replace threaded heating elements. Its space-saving design and lifetime warranty on electronics and elements make it a smart, reliable choice for modern homes and offices.

Specifications

ASIN	B00529DDUI
ASIN	B00529DDUI
Best Sellers Rank	#33,114 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #12 in Instant Water Heaters
Brand Name	EcoSmart
Capacity	2 gallons
Color	white us
Customer Reviews	4.2 4.2 out of 5 stars (692)
Customer reviews	4.2 4.2 out of 5 stars (692)
Date First Available	6 August 2012
Department	9207
Efficiency	Efficient
Flow Rate	2 Gallons Per Minute
Global Trade Identification Number	00854920002183
Heat Output	8 Kilowatts
Included Components	electric tankless water heater
Is Discontinued By Manufacturer	No
Is Electric	Yes
Item Depth	4 inches
Item Dimensions W x H	20.3W x 30.5H centimeters
Item Type Name	Electric Tankless Water Heater
Item Weight	2.16 kg
Item model number	ECO 8
Manufacture Year	1987
Manufacturer	Ecosmart
Manufacturer	Ecosmart
Manufacturer Part Number	ECO 8
Manufacturer Warranty Description	Lifetime Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labor or any incidental damages.
Material Type	Stainless Steel
Maximum Pressure	8 Bars
Model Number	ECO 8
Mount Type	Wall
Number of Items	1
Number of Packs	1
Power Source	Corded Electric
Product Dimensions	10.16 x 20.32 x 30.48 cm; 2.15 kg
Special Features	Energy Efficient, Space-Saving Design
Style Name	ECO 8
UPC	854920002183
Unit Count	1 Count
Voltage	240 Volts
Wattage	8000 watts

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