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  • MSRP: $1,118.00
  • Extra Savings: -$362.01
Today's Price: $755.99
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Drakken AHS21D

AHS21D AH Pro-Performer Electric Whole House Water Heater with Intelligent Electronic Controls, Stainless Steel Exchangers and USB Diagnostics: 21 KW
★★★★★ ★★★★★

AHS21D AH Pro-Performer Electric Whole House Water Heater with Intelligent Electronic Controls, Stainless Steel Exchangers and USB Diagnostics: 21 KW


Items that are currently in-transit to our warehouse, are currently in-stock at a drop-ship vendor’s, or manufacturer's warehouse will be marked as "Available". These products will ship once your order is processed (usually within 24-48 business hours). For any exceptions to this timeframe, an ETA (Estimated Time of Arrival) for your order will be emailed with accurate shipping dates in order to ensure that you are always updated and informed as to when your order will arrive at its final destination.

Quick Specs: View More

  • Width: 17"
  • Height: 16"
  • Depth: 3.5"

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The AH Pro-Performer water heater is constructed with durable stainless steel to handle any tough applications. With a 3/4 inch inlet and outlet, the water heater makes high flow applications a breeze. The heater features a USB port for the contractor to be to run a full diagnostics using the new iHeat Software built into the micro-processor exclusive to iHeat tankless water heaters. With iHeat software you can run a full diagnostics of the unit without having to open the unit, only a memory stick, and a laptop or tablet to insert for complete diagnostic report. Available at AppliancesConnection


  • Intelligent electronic controls designed to increase energy efficiency & safety
  • Heat Exchangers are 100% stainless steel to avoid corrosion
  • Able to install in series
  • Accurate output temperature circuits
  • Self Modulating Feature
  • Digital Temperature setting
  • USB Diagnostics
  • Applications: Homes, Condos, Multi-Family, Hospitals, Boosters, Space heating, Pool heating, Cabins, Boats, Restaurants anywhere hot water is needed


  • Unlimited supply of hot water
  • Compact designs, installs anywhere in-side of home
  • No venting needed
  • Save up to 60% on water heating bill
  • 0.99 EF more efficient than tank heaters
  • Easy installation
  • Stainless Steel construction
  • Save valuable Space
  • Competitively priced vs. Tank Heaters without the waste


Series: AH Pro-Performer
Fuel Type: Electric
Cover: ASTM 304 Stainless Steel 1.5 mm
Body/Heat Exchanger: ASTM 304 Stainless Steel
Element: Brass Flange/Copper
Usage: Residential
Energy Star: No
Tankless: Yes
Gallons Per Minute: 0.25
Operation Pressure: Min 25 psi, Max 150 psi
Pipe Fittings: 3/4"  NPT
Dimensions and Weights
Width: 17"
Depth: 3.5"
Height: 16"
Limited Life Time Heat Exchangers
3-Year Internal Components
1-Year Heating Elements


Save Money

Save Money

Since it's only on when you need it, an IHEAT electric tankless water heater can save you up to 60% on your hot water heating bill versus regular tank-style water heaters.

Reduce Consumption

Reduce Consumption

IHEAT eco-friendly tankless water heaters are small enough to install near your shower or sink, reducing wasted hot water energy typically lost in delivery.

No Tank Needed

No Tank Needed

Save valuable space by replacing your bulky tank type water heater. Small enough to mount under a cabinet!

Instant-On: Eliminate Waiting for Hot Water

Instant-On: Eliminate Waiting for Hot Water

IHEAT tankless water heaters feature instant-on technology. Install it near your faucet, get faster hot water without waste.

Micro Processor Controlled Temperature

Micro Processor Controlled Temperature

Advanced modulating technology constantly monitors precisely energy needed to heat water to the perfect temperature.

Continuous & Unlimited Supply of Hot Water

Continuous & Unlimited Supply of Hot Water

Save Energy on Water Heating Costs

Save Energy on Water Heating Costs

With no tank of water to keep pre-heated, save up to 60% on your hot water heating costs with IHEAT tankless water heaters.

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Overall Rating ☆☆☆☆☆ ★★★★★ 5.0
Ease of Use 5.0
Meet Expectations 5.0
Bang for Your Buck 5.0
Average rating out of 1 reviews

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Customer Reviews

 from West Jordan, UT
Overall Rating: ☆☆☆☆☆ ★★★★★ 5
Ease of Use: 5
Meet Expectations: 5
Bang for Your Buck: 5

Recommended Product:

The water heater helped me save a lot of money on my energy bills and it gives my whole house fresh hot water to use. Now we don't have to worry about the water boiler down at the basement because this heater is durable and easy to troubleshoot.

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  • Brand:Drakken
  • SKU:AHS21D
  • UPC:753182637211
  • Stock Id:393992
  • Product Number:AHS21D
  • Series:AH Pro-Performer


  • Fuel Type:Electric
  • Capacity (Gallons):N/A
  • Tankless:Yes
  • Gallons Per Minute:0.25


  • Width:17"
  • Depth:3.5"
  • Height:16"

    Technical Details

  • Energy Star:No
  • Voltage:240V
  • Amps:87.5
  • Usage:Residential
  • Element:Brass Flange/Copper
  • Cover:ASTM 304 Stainless Steel 1.5 mm
  • Model Type:21 KW
  • Body/Heat Exchanger:ASTM 304 Stainless Steel
  • Operation Pressure:Min 25 psi, Max 150 psi
  • Pipe Fittings:3/4" NPT
  • Weight:63.00 lbs