Peerless WB90 Boiler Overview

The Peerless Series WB90 is an Energy Star efficient, oil-fired cast iron boiler with an efficiency rating of 90% AFUE. It is designed for both direct and natural draft chimney venting and has a two-stage flame-retention burner for increased efficiency to meet both high and low heat loads. Standard features include a boiler reset control with low water cut-off, self-diagnostic burner control with indicator light, a temperature pressure gauge, and a built-in air elimination baffle. A full plate swing out door allows quick and easy cleaning, and a terminal strip simplifies field wiring. The unit’s insulated powder coated jacket reduces both operating noise levels and heat loss.

Questions about this model?

Consumer Reviews of Peerless WB90


  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied
  • #6 of 7 Peerless Boiler
  • 0% of customers recommended

Read Reviews of Other Peerless Products

Find ratings and reviews for Peerless Boilers, Furnaces and more

Read Reviews

Top 10 Boilers

See who made our list of the best Boilers of 2022.

See the Top Products

Find a Certified Heating & Cooling Professional In Your Area

Contact a top-rated local expert to help with all of your home's HVAC needs.

Other WB90 Reviews

There are very few online comments regarding the Series WB90. A homeowner on asked for opinions on several boilers, including the WB90, and was told that the boilers are all quite similar and a quality installation is most important.

WB90 Warranty

Product registration is required for maximum warranty coverage. The warranty for the Peerless Series WB90 boiler is comprised of the following:

  • Full 1-year warranty
  • Limited lifetime warranty on cast iron sections

Labor costs are not covered by the warranty.

HVAC Brands

Learn more about your home's heating and cooling system with our guides, how-to's, FAQ's, tips and more.

Ready to get a quote from an HVAC contractor?

Let us know what type of service you need and we can connect you with a certified local HVAC contractor.

Please enter a valid name

Please enter a valid phone number

Please enter a valid zip code

There are no dealers in this zip code.

Please enter a valid email address

Please select repair or replace

Please select heating, cooling or both