Judge a Reliance water heater by its complete model number, its fit for your home and the applicable written warranty. A brand-wide star rating cannot establish whether a particular gas, electric or heat-pump unit will meet your hot-water demand.
This guide covers US Reliance Water Heaters and uses one current electric model as a worked example. It is a document review, not a hands-on test, reliability ranking or purchase recommendation. Customer comments that mix different models or rental-service contracts cannot establish a failure rate for the unit you are considering.
Start with the data plate, not the brand badge
For a replacement, record the existing heater’s model, serial and product numbers. For a proposed new unit, request the full model and its matching specification sheet, manual and warranty. A “50-gallon Reliance” description leaves out the fuel, shape, electrical requirements and coverage terms.
Reliance’s current 6-50-EORS 110 product page (reliancewaterheaters.com) illustrates the distinction. It describes an indoor residential electric storage heater. These figures belong to that model; they do not describe the entire brand.
| Specification | Listed value |
|---|---|
| Nominal capacity | 50 gallons |
| Rated storage volume | 46 gallons |
| First-hour rating | 57 gallons |
| Supply / maximum wattage | 240 V / 4,500 W |
| Height / diameter | 49¼ / 23 inches |
The page lists upper and lower 4,500 W elements alongside a 4,500 W maximum. Do not add the two element ratings into a 9,000 W installation requirement. Have a qualified installer check the supplied unit’s data plate, circuit and installation instructions.
Check first-hour delivery and the complete installed footprint
Nominal capacity, rated storage and first-hour delivery describe different things. The 57-gallon first-hour rating is not a continuous flow rate or a guaranteed shower count. Give the installer your busiest hot-water period, simultaneous fixtures and incoming-water conditions for sizing.
The product links a 2023 six-year electric specification sheet (assets.reliancewaterheaters.com). Its short “6 50 EORS” row lists 49¼-inch height, 23-inch diameter and 57-gallon first-hour delivery. Its tall “6 50 EORT” row lists 59 inches, 20½ inches and 62 gallons. Both rows show 50 nominal and 46 rated gallons. Those dated rows omit the current series suffixes; confirm the complete proposed model instead of treating every tall or short version as interchangeable.
Cabinet dimensions alone do not prove installation fit. Ask the installer to check connections, service access, drainage and the surrounding location. If changing fuel or system type, use our gas versus electric water-heater comparison to organize the wider installation questions.
Separate tank, parts and labor coverage
The current example advertises six years for tank and parts and one year for labor. Its linked warranty (assets.reliancewaterheaters.com), dated April 2018, also lists one year of labor in its table. However, section D.5 broadly assigns labor, removal, installation, shipping and other expenses to the owner, except where prohibited by applicable state law. Ask Reliance to clarify the applicable written labor coverage for your exact unit before relying on the headline.
That document limits coverage to the original consumer purchaser continuously occupying the US single-family dwelling where the heater was first installed; it says coverage is not transferable. Commercial use or supplying more than one dwelling reduces the stated warranty to one year. These are conditions in the linked document, not a determination of anyone’s legal rights.
Anode rods are excluded as consumable maintenance parts. A six-year warranty is not a six-year lifespan prediction, an automatic refund or a promise that every replacement expense is paid. Keep the applicable documents and purchase and installation records.
Arrange upkeep and a usable service route
The linked January 2015 electric manual (assets.reliancewaterheaters.com), page 21, calls for an initial drain/flush and anode inspection after six months, then at least annually or more often as water conditions require. Confirm the schedule for the supplied unit with a qualified service person. This is maintenance planning, not instructions for opening or draining a heater.
Before buying, ask who services that exact model locally and how parts and warranty claims are handled. The linked warranty requests product, model and serial numbers, purchase and installation dates, and installation location for inquiries. Have those details ready when seeking help.
For a broader brand comparison, see A. O. Smith versus Rheem. Keep the final decision tied to the specific unit and installation quote rather than transferring another model’s review score.