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Eccotemp Under Sink EM-4.0 Electric Mini Storage Tank Water Heater

Discover the Eccotemp EM-4.0, a compact and efficient mini-tank water heater. Designed for immediate hot water, this ETL Certified appliance is perfect for homes, RVs, and even food trucks. Enjoy adjustable temperatures and a quick recovery time, all within a space-saving design. Reliable and energy-efficient, the EM-4.0 is your answer to convenient hot water access.

What's Included

Here's everything included with this Eccotemp Under Sink EM-4.0 Electric Mini Storage Tank Water Heater.

  • ETL Certified 4-gallon Mini-Tank Water Heater
  • Temperature and pressure relief valve
  • Mounting hardware
  • Installation manual
  • Adjustable temperature controls
  • Standard 110/120v outlet operation
  • 5-year warranty on components

Compact Design for Space Efficiency

The Eccotemp EM-4.0 boasts a compact design that fits seamlessly under sinks or in tight spaces. This is perfect for apartments, RVs, or tiny homes where every inch matters. Enjoy hot water without sacrificing valuable space.

Eccotemp Under Sink EM-4.0 Electric Mini Storage Tank Water Heater - Green Vista Living

Quick Recovery Time

The EM-4.0 features a rapid recovery time of 10-20 minutes, providing you with instant hot water when you need it most. This fast heat recovery minimizes the wait time, keeping your daily routine smooth and hassle-free.

Eccotemp Under Sink EM-4.0 Electric Mini Storage Tank Water Heater - Green Vista Living

Energy Efficiency and Versatility

Operating at 98% energy efficiency, this mini-tank water heater saves you money on electricity bills. It works on a standard 110/120v outlet and can service up to two sinks, or integrate seamlessly with an existing system for added versatility.

Eccotemp EM-4.0 Electric Mini Storage Tank Water Heater highlighting energy efficiency and power indicators
Eccotemp Under Sink EM-4.0 Electric Mini Storage Tank Water Heater - Green Vista Living

Adjustable Temperature Controls

Customize your water temperature from 90F to 140F with ease. This flexibility ensures comfort and safety for your specific needs.

Eccotemp Under Sink EM-4.0 Electric Mini Storage Tank Water Heater - Green Vista Living

Versatile Installation Options

Install the heater wall-mounted or free-standing according to your space requirements. This versatility allows for easy integration into any setup.

Eccotemp Under Sink EM-4.0 Electric Mini Storage Tank Water Heater - Green Vista Living

Reliable Water Pressure

With a maximum water pressure of 150 psi, enjoy consistent and dependable water flow. This reliability ensures a steady supply for your needs.

Eccotemp Under Sink EM-4.0 Electric Mini Storage Tank Water Heater Features

  • 4-gallon Mini-Tank for instant hot water supply
  • ETL Certified for safety and reliability
  • Quick recovery time of 10-20 minutes
  • Adjustable temperature controls (90F - 140F)
  • 98% energy efficiency rating
  • Can service up to two sinks
  • Operates on a standard 110/120v outlet
  • Versatile installation: wall-mounted or free-standing
  • Maximum water pressure of 150 psi
  • 5-year warranty on components

Eccotemp Under Sink EM-4.0 Electric Mini Storage Tank Water Heater Manuals:

  • Installation Manual

Eccotemp Under Sink EM-4.0 Electric Mini Storage Tank Water Heater Specs

Capacity 4 gallons
Certification ETL Certified
Recovery Time 10-20 minutes
Temperature Range 90F - 140F
Energy Efficiency 98%
Outlet Requirement 110/120v
Maximum Pressure 150 psi
Warranty 5 years

Eccotemp Under Sink EM-4.0 Electric Mini Storage Tank Water Heater FAQ

Can the Eccotemp EM-4.0 be used in a recreational vehicle (RV)?

Yes, the Eccotemp EM-4.0 is perfect for RVs. Its compact design and versatile installation options make it ideal for compact spaces like those found in RVs.

How many sinks can the EM-4.0 service at once?

The Eccotemp EM-4.0 can service up to two sinks, providing sufficient instant hot water for small household or commercial needs.

What type of power outlet is required for this water heater?

The Eccotemp EM-4.0 operates on a standard 110/120v power outlet, making it easy to install in most residential and commercial areas.

Is installation hardware included with the purchase?

Yes, the purchase includes mounting hardware as well as a temperature and pressure relief valve, and an installation manual to assist with setup.

Why Choose Green Vista Living


At Green Vista Living, we’re passionate about providing top-quality renewable energy and eco-friendly products that not only enhance your life but also help protect the planet. We’ve built our business with one mission in mind: to be the go-to destination for renewable energy solutions, outdoor gear, and off-grid supplies. When you shop with us, you’re not just getting innovative products—you’re joining a community that’s committed to sustainability.

We Put Our Customers First


As a small, dedicated team, we care deeply about your experience. Unlike large, faceless online companies, Green Vista Living offers a personal touch in everything we do. We're here for you from start to finish—whether you need product advice, support after a purchase, or just have questions. Our knowledgeable customer service team is always just a phone call or email away, ready to assist you in any way possible.

We Share Your Passion for the Planet


Our love for the outdoors and sustainable living runs deep. Most of our team hails from the mountains of Colorado, where renewable energy and the environment are part of daily life. So when you call Green Vista Living, you’ll speak directly with an expert who understands both the technical side of renewable products and the lifestyle they support. Whether you’re looking for solar generators, EV chargers, or any of our eco-friendly offerings, you can trust us to guide you with expertise and passion.

Trusted Industry Experts


Our close partnerships with the best brands in renewable energy and outdoor gear give us insider knowledge that you won’t find anywhere else. We’ve taken the time to carefully select products that stand out for their quality and reliability. At Green Vista Living, we believe in understanding our products inside and out so that we can help you make the right choice with confidence.

More Reasons to Love Green Vista Living


Price Match Guarantee: Thanks to our partnerships, we offer the best prices around. If you find a better deal, we’ll refund the difference.


Free Shipping: We offer free shipping on most orders to the lower 48 U.S. states, making your shopping experience even easier.


100% Secure Ordering: Our site uses SSL Encryption technology to keep your payment and personal information safe and secure.


Volume Discounts: For large orders, we’re happy to provide special pricing—just reach out for a custom quote.


Authorized Dealer: As an authorized dealer for all our brands, you’ll receive full manufacturer warranties with every order.


At Green Vista Living, we aim to make your renewable energy and outdoor experience as seamless and enjoyable as possible. With our unmatched customer service, expertise, and dedication to quality, you can shop with confidence, knowing you’re supporting a company that’s as committed to the planet as you are.

Frequently Asked Questions

Yes! We provide free and fast shipping on MOST orders within the continental United States. However, some specific brands and items will require a quote. You can live chat or call us for a quote
Most orders ship out within 1–2 business days and arrive within 3–5 business days depending on your location.
We offer easy returns as long as your item meets the conditions outlined in our Return Policy. Items must be unused, in original packaging, and returned within the specified return window.
Absolutely! Our in-house product experts are here to help. Live chat or call us 513-743-829 for personalized advice before or after your purchase.
Yes. All products include any applicable manufacturer warranties, and we’ll help you handle any warranty claims if needed.
Yes, we only sell 100% authentic, brand-new products, sourced directly from our manufacturers or authorized distributors.
REAL REVIEWS, REAL RESULTS

Feedback From Our Customers

At Green Vista Living, we pride ourselves on delivering top-quality products and exceptional service to solar professionals and homeowners alike. Here's what our customers have to say about their experiences with us.

Kevin Leary
May 18, 2025
★★★★★

Incredible Tech Support from Anees of Green Vista Living. Exceptional service and went above and beyond on every question.

Bryan Cunningham
Off grid Kit • Dec 21, 2025
★★★★★

Shipment was slow due to high demand, but the team kept me informed and ensured everything arrived properly.

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