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: 376818149

Details

Brand
EcoSmart
Capacity
2 Gallons
Power Source
Corded
Product Dimensions
20.3W x 29.2H
Special Feature
LED Display

⚡8 kW powerful heating

💧Up to 2 GPM flow rate

🔋99.8% energy efficient

Description

🔥 Power your day with endless warmth and smart efficiency!

ENERGY SMART EFFICIENCY - Slash your utility bills with 99.8% energy conversion—eco-friendly and wallet-friendly.
USER FRIENDLY LED DISPLAY - Instantly monitor and control your water temperature with sleek digital precision.
COMPACT WALL MOUNT DESIGN - Saves space and fits seamlessly into any modern office or home setup.
ENDLESS HOT WATER ON DEMAND - Never run out of warmth during your busiest moments.
DURABLE STAINLESS STEEL BUILD - Engineered for longevity, ensuring reliable performance year after year.

The EcoSmart ECO 8 is a compact, electric tankless water heater delivering 8 kW of power and up to 2 gallons per minute flow rate. Designed for point-of-use applications like bathrooms and office sinks, it features a durable stainless steel body, an intuitive LED display, and an impressive 99.8% energy efficiency rating—perfect for millennials seeking sustainable, space-saving, and cost-effective hot water solutions.

Specifications

ASIN	B00529DDUI
Best Sellers Rank	#2,368,012 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #2,101 in Instant Water Heater
Brand Name	EcoSmart
Capacity	2 Gallons
Colour	White
Country of Publication	USA
Customer Reviews	4.2 4.2 out of 5 stars (692)
Efficiency	99.8%
Flow Rate	2 Gallons Per Minute
Global Trade Identification Number	00854920002183
Heat Output	8 Kilowatts
Included Components	electric tankless water heater
Is Electric	Yes
Item Depth	4 inches
Item Dimensions W x H	20.3W x 29.2H Centimeters
Item Type Name	Electric Tankless Water Heater
Item Weight	2.16 kg
Manufacture Year	1987
Manufacturer	Ecosmart
Manufacturer Part Number	ECO 8
Material Type	Stainless Steel
Model Number	ECO 8
Mount Type	Wall
Number of Items	1
Number of Packs	1
Power Source	Corded Electric
Special Features	LED Display
Style Name	ECO 8
UPC	854920002183
Unit Count	1.0 Count
Voltage	240 Volts
Wattage	8000 Watts

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