In stock

Opti27+ | Optimal Smart Electric Tankless Water Heater | Wi-Fi Enabled | 208/220/240-Volt 27 Kw 4.5 GPM


25-Year Warranty
$849.00$899.005% OFF

Lifetime warranty. 27 kW electric tankless water heater provides efficient, continuous on demand hot water. Opti+ WiFi board and Opti+ App Included.   

what’s the right heater for me?

Overview

Lifetime warranty. 27+ kW electric tankless water heater provides efficient, continuous on demand hot water. The Opti27+ is the only water heater with patent pending ultrasonic flow sensing technology providing quiet, efficient and smart control. With advanced power modulation, built in diagnostics, WiFi Enabled, IoS / Android app controlled, the Opti27 heats to within 1° of set temperature (plus or minus). Heat up to 4.5 gallons per minute (gpm) to 105°F given an inlet water temperature of 72°F. It supports a 3 - 4 bathroom home in warm climates or acts as a point of use in colder climates. Dry-fire protection prevents premature element failure for worry-free installation. The Opti27 comes with a 25-year residential warranty and a 5 year commercial warranty. Covers all components and ground shipping. For more information on installation, best practices and the warranty, please use the Additional Resources links.

Product Details

Technical specs:

electrical

  • 3 x 8 awg wire
  • 3 x 40 amp dp breaker
  • 50/60 hertz
  • 27000 watts
  • 112 max amp draw
  • 220/240 volts
  • 99.9% efficient
  • 3 Elements

plumbing

  • 3/4" npt connections
  • 0.25 gpm activation
  • 150 max psi

Details

  • 16.5”h x 11.5”w x 3.5”d
  • Indoor Use / Wall Mounted
  • 25 year residential warranty - See link below for complete details.
  • ETL Listed / UL Listed / CSA Listed

Install + Care + Warranty

The Opti 27 comes with a 25-year residential warranty and a 5 year commercial warranty. COVERS ALL COMPONENTS. For more information on installation, best practices, and the warranty, please use the links below.

Delivery Info

Orders are typically processed within 1-5 business days of receipt. Please note that this timeframe may vary depending on the specific model and availability of your chosen tankless water heater.

Shipping Methods: We offer various shipping methods through reputable carriers like USPS, DHL, UPS and FEDEX. Shipping costs are calculated based on your order weight, destination, and chosen shipping method. You will see these costs reflected during checkout before finalizing your purchase.

Its Optimal

What else should I consider?

Smart Technology

Our heaters are not just smart; they're geniuses in the world of water heating.

Ultrasonic Innovation

Experience the future with our ultrasonic flow sensing technology.

Unmatched Reliability

Feel secure with the last water heater you'll ever need.

Space Saver

Don't let a bulky tank take over your space.

Cost Efficiency

Keep your money in your pocket where it belongs.

Energy Conscious

Join the green revolution with a staggering 99.9% energy efficiency rate.

Top 5 FAQs

All what you need to know

HOW CAN I FIND THE RIGHT TANKLESS WATER HEATER FOR MY NEEDS?
WHAT IS THE LIMITED LIFETIME WARRANTY COVERAGE?
HOW EFFICIENT ARE ELECTRIC TANKLESS WATER HEATERS?
ARE TANKLESS WATER HEATERS “INSTANTANEOUS”?
HOW MUCH CAN I SAVE WITH AN ELECTRIC TANKLESS WATER HEATER?

For more details, visit our product faqs

Loading

Customer Reviews
5.0 Based on 2 Reviews
5 ★
100% 
2
4 ★
0% 
0
3 ★
0% 
0
2 ★
0% 
0
1 ★
0% 
0
Write a Review

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
K
01/26/2025
kurtmando
United States

25 year warranty

The reason I converted from hot water tank to tankless was that I have a Roman Tub and the water would always go cold before it was full. I went with the 27Kw and I'm glad I did at this time of the year with the inlet temperature below 70° I only get about 3 1/2 gallons a minute but I do keep the temperature set at 135°. When summer comes again and my inlet temperature goes back to 80°I'm sure I'll get over 4 or 5 gallons a minute. This unit is tops with easy replacement of elements does not have a water flow paddle wheel it has ultrasonic sensing, many other brands use the paddle wheel and they will go bad. Electricity draw is proportional so whether you buy the 18 Kw or 27 Kw . For example, if you use 1 gallon per minute, electricity draw will be the same out of each unit, as you increase water flow it only uses electricity for the water it is heating, it doesn't run at 27Kw all the time. I was able to run 2 Showers and a Dishwasher with no problem. I really love this unit. I would recommend this unit to anybody who is looking for a good quality unit.

K
12/01/2024
Kristin
United States

Incredible customer service

Last night we finally got all the plumbing ran and we were ready to switch from the old tank and run water through our new 27+ optimal. Drum roll and we were getting an error code ouch! Here stands my poor husband who is wet, cold and smells awful from being under the house. I sent an email about 11:30 pm cst and within 5-10 minutes I got a call from Ryan Florida. My husband actually left to go shower and Ryan said call me back when you are finished. 20 minutes later and we called Ryan back and he answered his phone. He walked us through everything and showed us extra things our new optimal machine would do. This man went WAY above and beyond to help us out. We had not water at all and he made sure we were up and running even though it was after 1 am his time. So far I’m super impressed with my 27+ optimal tankless water heater and the customer service is unmatched! Thank you again Ryan for all the support!