• Easy to install and set up
  • Built in level and universal back plate provides opportunities for future upgrades
  • Modern Design with a large, easy-to-read screen and a bright backlit display
  • Proven Performance with ±1 degree temperature accuracy
  • Temperature Setpoint Limits
  • Keypad Lockout
  • Permanent Memory
  • Filter Change Reminder
  • Selectable Programming
  • Auto Changeover
  • Dual Fuel Control


  • Models RHC-TST-85U-22PR and RHC-TST-85U-42PR
  • RHC-TST-85U-22PR - conventional 2 stage heat/cool, heat pump 2 stage heat/single stage cool
  • RHC-TST-85U-42PR - conventional 2 stage heat/cool, heat pump 4 stage heat/2 stage cool



RHC-TST-85 Programmable Thermostats


5-Year Limited Warranty

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.