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Independent shopper guide · Stiebel Eltron
Stiebel Eltron Accelera 220 E buying guide
A 58-gallon, 208/240V heat-pump water heater designed to rely primarily on its heat pump rather than frequent resistance backup. It has a large 27-inch-class diameter, a 15A electrical requirement, and no current exact ENERGY STAR catalog binding in this site's retained snapshot, so certification-dependent comparison remains blocked here.
Shopper guide · about 8 minutes.
Editorial synthesis awaiting refresh. Each specification, price, and review source below remains governed by its own displayed source date and may still be current.
Buying guide details
Same product line, different fit
Compare size, price, room air and noise
Use first-hour rating—not tank size alone—to compare hot-water delivery. Prices are exact-size public observations before tax, shipping, installation and rebates, and can change at any time. Room-air and sound figures keep their exact source scope and qualifications.
Official Stiebel Eltron technical documents and federal EnergyGuides support these manufacturer ratings. This site's current snapshot has no exact ENERGY STAR catalog binding for either model, so none of these values is presented as ENERGY STAR catalog data.
| Size and model | Lowest current price | Product dimensions | Minimum room air | Noise level (dBA) | Rated storage | First-hour rating | UEF | Power / circuit | Empty weight |
|---|---|---|---|---|---|---|---|---|---|
| 58 galAccelera 220 EFederal EnergyGuide lists 58-gallon capacity and rounds first-hour rating to 51 gallons; no exact ENERGY STAR catalog binding is asserted. | Unavailable at this retailer SupplyHouse View retailer source for Accelera 220 E (opens in a new tab) Historical $2,699 observation only. On 2026-09-05 the exact SKU 233058 page said discontinued August 24, 2026 and discontinued by the manufacturer, so it is excluded from current price claims. Excluded from every lowest-price claim. A current amount appears only after we verify and publish a new eligible seller observation. | 60 7/8 in H × 27 1/8 in diameter | 800 ft³ minimumRequirement detailsThe official Accelera 220 E / 300 E manual says not to install in a room with less than 800 cubic feet total volume. The diagram labels the same example '800 ft2' but immediately gives 10 × 10 × 8 ft and the narrative explicitly says 800 cubic feet; this report follows the unambiguous volume statement. No manufacturer-approved duct/louver exception was found in the reviewed manual. Installation source for Accelera 220 E (opens in a new tab). |
45–52 dBA @ 1 mSound evidencesound pressure at 3.3 ft (1 m) versus sound power; do not compare as one metric The 45 dBA value conflicts with the current 2.2024 technical specification's 52 dBA value at the same stated distance. Sound source for Accelera 220 E (opens in a new tab). Second source for Accelera 220 E (opens in a new tab). |
58 gal | 51 gal | 3.115 | 208–240V 15A |
264.5 lb |
| 79.8 galAccelera 300 EOfficial technical sheet lists 79.8-gallon capacity and 74.2-gallon first-hour rating; no exact ENERGY STAR catalog binding is asserted. | Price withheld pending our next source check SupplyHouse View retailer source for Accelera 300 E (opens in a new tab) Exact Stiebel SKU 233059; nominal 80 gallons, seller specifications 79.8 gallons. Quantity 1 and enabled Add to Cart; In Stock, 12 total available at the source check. Optional rebate, delivery and accessory offers do not reduce the equipment price. Destination, availability, timing, freight and checkout terms can vary. The earlier amount lacks current evidence. We withhold it until we verify and publish a new eligible observation. | 75 1/4 in H × 27 1/8 in diameter | 800 ft³ minimumRequirement detailsThe official Accelera 220 E / 300 E manual says not to install in a room with less than 800 cubic feet total volume. The diagram labels the same example '800 ft2' but immediately gives 10 × 10 × 8 ft and the narrative explicitly says 800 cubic feet; this report follows the unambiguous volume statement. No manufacturer-approved duct/louver exception was found in the reviewed manual. Installation source for Accelera 300 E (opens in a new tab). |
45–52 dBA @ 1 mSound evidencesound pressure at 3.3 ft (1 m) versus sound power; do not compare as one metric The 45 dBA value conflicts with the current 2.2024 technical specification's 52 dBA value at the same stated distance. Sound source for Accelera 300 E (opens in a new tab). Second source for Accelera 300 E (opens in a new tab). |
79.8 gal | 74.2 gal | 3.609 | 208–240V 15A |
297.6 lb |
Check the official size specification from Stiebel Eltron Accelera E installation manual (opens in a new tab). Final dimensions and requirements must be confirmed against the exact model ordered.
Ownership essentials
Warranty and connected controls
Confirm coverage terms and supported controls for the exact model before purchase.
- Warranty
- Stiebel Eltron states a 10-year warranty against defects in workmanship and materials. The written warranty controls eligibility, labor, exclusions, and claim procedures.Official warranty terms for Stiebel Eltron Accelera 220 E (opens in a new tab)
- Smart-home control
- The product has an onboard electronic display and is described as smart-meter ready. No reviewed consumer Wi-Fi app or mainstream smart-home control was verified.Official controls source for Stiebel Eltron Accelera 220 E (opens in a new tab)
Pros
- A 15A circuit requirement may reduce electrical-load demands compared with 30A integrated competitors, subject to installer validation.
- Compare the dated exact-size offers below; prices and stock can differ between sellers.
Cons
- The 58-gallon model's 51-gallon first-hour rating and 3.115 UEF are the lowest verified figures among the similarly sized integrated products in this comparison set.
- Its 800 ft³ room-air requirement is the largest verified minimum in the integrated-product set, and its 27⅛-inch width can be harder to move through doors.
Independent reading guide · not affiliated with Reddit
The discussions, with the context
What people say about Stiebel Eltron on Reddit
Three discussions explicitly name the Accelera 220 E and cover ownership, unresolved controls and plumbing planning. A fourth adds one 300 E owner's garage and noise experience, clearly separated as sibling-model context. These accounts do not establish a representative review sample or a failure rate.
A real owner comment in a broader thread
A Calgary owner names the 220 E and discusses shower demand, sound, room cooling and airflow. Comments about other manufacturers in the same thread are not Stiebel evidence.
Based on discussion 1: Do you have a hot water heat pump in Canada?
An unresolved controls question
A new homeowner describes a temperature setting that appears to revert after temporarily improving hot water. No confirmed cause or repair is established, so this is a question to investigate—not a recurring-defect finding.
Installation drawings still need approval
The plumbing thread asks about mixing valves, recirculation, check valves and drain/sensor details. Replies are discussion, not an approved installation design or a performance test.
A 300 E owner's perspective on location and sound
One owner reports satisfaction after about 18 months with a 300 E in a Florida garage, while describing noticeable sound and wanting quieter equipment near living space. That tradeoff belongs to this sibling-model installation, not a measured 220 E noise test.
Based on discussion 4: A 300 E owner's garage experience in a Bradford White/LG discussion
Explore the discussions
Read our summaries here. Each original thread opens on Reddit only if you choose to follow its link.
r/heatpumps · Exact-model owner comment
01Do you have a hot water heat pump in Canada? on Reddit (opens in a new tab)
Within a Canadian HPWH discussion, an Accelera 220E owner describes shower capacity, perceived sound, room cooling, and a possible airflow improvement. Installation is in Calgary; other replies concern different brands and should remain separate.
Which model does this cover? One visible owner comment explicitly identifies Accelera 220E; the surrounding thread covers multiple manufacturers.
r/Plumbing · Unresolved owner troubleshooting
02Hot Water Heater Setting – Resetting on Reddit (opens in a new tab)
A new homeowner reports an Accelera 220 E temperature setting reverting after temporarily restoring hot water. The visible conversation does not establish a diagnosis or repair. Useful as an unresolved control question, not a recurring-defect claim.
Which model does this cover? Original post explicitly names an Accelera 220 E 58-gallon heat-pump water heater.
r/askaplumber · Owner installation planning
03Water Heater Plumbing Diagram on Reddit (opens in a new tab)
An Accelera 220E owner asks about a proposed mixing-valve and recirculation layout, including check valves, sensor placement, and drains. This is installation-planning discussion, not an approved plumbing design; manufacturer instructions and professional review still govern.
Which model does this cover? Original post explicitly names the Stiebel-Eltron Accelera 220E and asks about its plumbing layout.
r/heatpumps · Sibling-model owner experience
04A 300 E owner's garage experience in a Bradford White/LG discussion on Reddit (opens in a new tab)
One Accelera 300 E owner reports satisfaction after about 18 months in a Florida garage and says they installed it themselves. In a follow-up, they describe noticeable sound and say they would want quieter equipment near living space. The account gives useful location and ownership context, without a measured sound level or a confirmed repair or warranty outcome.
Which model does this cover? The relevant owner explicitly names Accelera 300 E. This is a different capacity/model from the 220 E reviewed here. The surrounding thread discusses other brands.
How we read and use these discussions
These are our original summaries of publicly retrieved posts and comments, not a live Reddit feed or a verified-purchase review collection. The displayed date records our research read; a retrieved copy may lag the live thread. We do not claim to include every comment or verify owner identities. Questions, commercial participation, different capacities and generations stay labeled.
We do not turn thread participants into review totals, combine them with retailer ratings, infer failure rates, or use their quoted prices as current offers. Dated reading notes remain available as research; ratings and other time-sensitive source observations have separate expiry rules. Editorial re-reading is due seven days after the recorded read, without automatically changing that date.
Equipment prices, not installed quotes
Where to buy and what it costs
We check Home Depot, Lowe’s, Menards and SupplyHouse.com first. Prices exclude installation, permits, accessories, tax, shipping and rebates unless explicitly stated.
No eligible current seller price is available. A new source check is required before an amount can appear; expired prices are withheld.
Direct, non-affiliate links. Family-variant and list prices are labeled; neither means the pictured exact model is in local stock.
Validate the product evidence
Official specifications and documents
Use these primary manufacturer documents to verify the comparison facts for the exact model.