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Stiebel Eltron Accelera heat pump water heaters Official manufacturer product image used for editorial identification; no endorsement implied. Official image source (opens in a new tab).

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.

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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.

Choose what to compareShowing the numbers shoppers use most. Every available specification remains one click away.
Exact-size advertised price, dimensions, minimum room air, noise, and performance for each offered size
Size and modelLowest advertised priceProduct dimensionsMinimum room airNoise level (dBA)Rated storageFirst-hour ratingUEFPower / circuitEmpty 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. $2,699.00 ProDryers Check exact-model listing for Accelera 220 E (opens in a new tab)
Why this price?Exact-model listing displayed this price and an estimated 5-7 business-day lead time; verify freight and destination.Observed 2026-09-04; verify current price and availability.
 60 7/8 in H × 27 1/8 in diameter 800 ft³ minimum
Requirement 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 m
Sound 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. $2,981.31 SupplyHouse Check exact-model listing for Accelera 300 E (opens in a new tab)
Why this price?Exact 300 E listing displayed this price and in-stock quantity; verify freight, destination, and delivery date.Observed 2026-09-04; verify current price and availability.
 75 1/4 in H × 27 1/8 in diameter 800 ft³ minimum
Requirement 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 m
Sound 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.
  • Three independent sellers displayed the same exact-model public price during this review.

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.

Reviews you can read here

What reviewers and owners report

Each card gives you our source-specific summary on this page. Ratings and counts stay separate, and related-model or professional evidence is clearly labeled.

Coverage at a glance

Three separate sources are available: two exact-220 E seller populations and one installed-owner report for the 300 E sibling. Every source and size remains distinct.

Sources were checked independently on 2026-09-02. Onsite text is an original concise paraphrase, not a copied review body. Ratings and counts remain source-specific; related models and professional evaluations are explicitly labeled.

Owners praise

  • Quiet operation and satisfactory hot water recur in the small samples
  • Owners mention strong insulation and efficient heat-pump use

Owners flag

  • The wide, heavy body complicates delivery and placement
  • Samples remain too small for long-term reliability conclusions

SupplyHouse.com

Accelera 220 E
Rating: 4.2/5

Current source aggregate · 5 source-hosted entries

The seller page shows 4.2 out of 5 from five ratings. Owners praise quiet operation, hot-water availability, and efficiency; the sample is too small for a reliability conclusion.

Exact model: The rating and count are limited to the exact Accelera 220 E listing.

Rise

Accelera 220 E
Entries: 2 entries

Current count only

Two owners describe smooth delivery or installation, strong insulation, and satisfactory hot water; heavy handling is a practical drawback. This is not a reliability sample.

Exact model: The exact SKU page exposes two entries but no separately printed aggregate retained here.

Green Building Advisor owner report

Accelera 300 E
Owner reports: 1 owner reports

Identifiable owner reports

The owner describes quiet operation and a favorable installer reaction. One sibling-model anecdote provides practical context but no recurring theme or reliability estimate.

Related listing with explicit scope: One installed owner discusses the 300 E sibling. It is not an exact 220 E report or a verified retailer population.

The summaries above are readable here; the verification links are optional. We paraphrase rather than republish copyrighted review bodies. Coverage is broad but cannot be literally exhaustive, and a small, incentivized, seller-hosted, family-level, professional, or community sample is not a reliability study.

Help the next homeowner

Review your exact size and model

Choose the exact capacity you own, rate it, and describe what ownership has been like. Reports stay private until a moderator approves them; approval confirms only that a report meets the publishing rules, not that its claims were independently verified.

Your rating
What worked, what did not, installation surprises, sound, recovery, controls, or service are useful. Do not include names, contact details, street addresses, order numbers, installer names, URLs, or account details.0 / 1,500 characters

The review record has no name, email, contact field, account, IP address, user agent, or browser identifier. It stores only this guide, exact size and model, rating, ownership period, report text, and moderation status. Published reports remain separate from public-source evidence.

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.

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.