Rinnai E Series Boiler Overview

The Rinnai E Series is a condensing combi boiler with an efficiency of up to 95.6% AFUE. The E Series is a compact wall-hung unit designed for homes with 1-2 baths and is approved for room and closet installations. The E Series is available in three models — E50C, E75C and E110C — ranging in size from 50,000 to 110,000 maximum BTU heating inputs. It features a durable stainless steel primary heat exchanger and a built-in domestic hot water plate heat exchanger which delivers faster hot water. Priority is given to domestic hot water, resulting in continuous hot water being available.

Questions about this model?

Consumer Reviews of Rinnai E Series


  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied
  • #1 of 4 Rinnai Boiler
  • 0% of customers recommended

Read Reviews of Other Rinnai Products

Find ratings and reviews for Rinnai Boilers, Furnaces and more

Read Reviews

Top 10 Boilers

See who made our list of the best Boilers of 2020.

See the Top Products

Find a Certified Heating & Cooling Professional In Your Area

Contact a top-rated local expert to help with all of your home's HVAC needs.

Rinnai E Series Boiler Reviews

"Waste of money and time"

1.0 rating
Very Unsatisfied

Stay away: mine didn't even last 3 years. I installed it new in 2013 and after 3 years it started going in block state (error code bl85) randomly. Called the plumber who installed it and with him we did everything the technical support asked us to do. After replacing various parts (new flow valve, new heat exchanger, new rod) it still didn't work. At the end I just gave up and replaced the entire unit. Called the customer support to know if they wanted to get the old boiler back to see what was wrong. Never heard back! Very very unsatisfied: never again!


San Francisco, CA

"Bad customer relations and poor backing for their products"

1.0 rating
Very Unsatisfied

I've had numerous problems with unit and a little over a year ago I had a scale control filter installed. It just had a catastrophic leak the lexan cartridge cracked and lost water at a rate of one gallon per 15 minutes. The model is now discontinued so replacement cartridges are not available and as they won't warranty it I am expected to pay for the new redesigned model and pay to have the new one put in by plumber so far I've got over $10k in this thing it works good when it works but no hot water for a week now does not sit well. And having to buy a new model to replace a defective one is outrageous shame on Rinnae noy good customer relations

K. Stott

Albany, NY

Other E Series Reviews

A post from a homeowner on heatinghelp.com asking for opinions about the E Series had mostly positive responses. There are a couple of posts about the unit’s hot water output on the same site, with a mix of positive and negative comments.

E Series Warranty

Product registration is required within 30 days of purchase for maximum warranty coverage. The warranty for the Rinnai E Series Boiler is comprised of the following:

  • 12-year limited heat exchanger warranty
  • 2-year limited parts warranty
  • 1-year labor warranty

HVAC Brands

Learn more about your home's heating and cooling system with our guides, how-to's, FAQ's, tips and more.

Ready to get a quote from an HVAC contractor?

Let us know what type of service you need and we can connect you with a certified local HVAC contractor.

Please enter a valid name

Please enter a valid phone number

Please enter a valid zip code

There are no dealers in this zip code.

Please enter a valid email address

Please select repair or replace

Please select heating, cooling or both