• Built to last–tank is manufactured from heavy gauge steel. Longer life equals a higher “return on investment”. Outer jacket is made from steel and powder coated for a lasting, durable finish.
  • Temperature porcelain enamel protects all tank and coil – and maximizes corrosion resistance.
  • Factory installed automatic temperature controls – immersion aquastat on all models.
  • Factory installed brass drain valve.
  • Sediment reduction inlet – standard on the STID80 and STID120. Reduces sediment buildup on the tank bottom – increasing operating efficiencies and tank life.
  • Temperature and pressure relief valve – CSA/ASME rated and factory installed.
  • 1-1/2" Coil diameter – larger diameter, results in higher recovery and less pressure drop through the coil – smooth surface on the coil resists lime build-up.
  • 2" Non-CFC foam insulation – provides superior insulating quality and decreases standby heat loss.
  • Two heavy-duty magnesium anode rods – inhibit corrosion and maximize tank life.
  • Factory installed dielectric nipples – provide greater insulating protection against electrolysis.
45 STID50


  • Built to last
  • High temperature porcelain enamel protects all tank and coil
  • Two heavy-duty magnesium anode rods
  • Factory installed automatic temperature controls




Limited Tank Warranty - 3 Years

KwikComfort® Financing can help make your purchase even easier.
Ruud makes it easy to find a financing option that works for you! With many options and benefits available, KwikComfort Financing is the best way to get the home comfort you need without the wait.

  • Applications made easyWe'll help you avoid lengthy contracts, headaches and hassles.
  • Kwik credit decisionsYou'll get an answer to your application within minutes.
  • Fast credit for the futureFinance your Ruud equipment and anything you want to add later.
  • Reduced interest/fixed paymentsGet low interest and fixed monthly payments until the purchase is paid.
  • Minimum monthly paymentTake advantage of convenient monthly payments that fit your budget.
  • Deferred interest/no interestEnjoy interest-free payments as long as the balance is paid by the due date.