Product Details

GWB9-IH Boiler

High efficiency, gas-fired condensing water boiler

Features

Overview

    Here are some of the top features of the GWB9-IH:

    • The cast-aluminum heat exchanger in the GWB9-IH transfers heat three times faster than conventional cast-iron exchangers. So you enjoy rapid warmth when you need it.
    • With a corrosion-resistant cast-aluminum heat exchanger, you can take comfort knowing the boiler will deliver dependable performance, season after season.
    • The GWB9-IH is designed to integrate easily into a traditional radiator system. Its compact design allows flexible installation inside your home for easy replacement of an older boiler with a higher efficiency model. 

Energy Efficiency

    • Cast-aluminum heat exchanger—transfers heat up to three times faster than traditional cast iron exchangers

    • This product has been designated as one of the Most Efficient ENERGY STAR certified products in 2020. Products that are recognized as the Most Efficient of ENERGY STAR in 2020 prevent greenhouse gas emissions by meeting rigorous energy efficiency performance levels set by the U.S. Environmental Protection Agency.

    • Electronic ignition control—monitors water temperature and maximizes efficiency by turning on the burner only when needed

Home Comfort

    • Sealed combustion—minimizes fan noise and provides quiet, soothing heat
    • Easy integration—low temperature supply and return water makes the unit compatible with existing radiant and underfloor systems

Performance

    • Durable cabinet—heavy-gauge steel cabinet and baked-on paint finish
    • Compact and versatile—allows easy installation in a basement, closet or alcove enclosure, and can be fueled by natural or LP* gas

Publications

GWB9-IH Boiler Product Brochure

Disclaimer

*Shipped as natural gas; field convertible to LP.

Certifications

Residential Team

Contact Us for details on our products or to schedule a no obligation, free, in-home estimate.

 

 

Learn More

A portion of the content and images on this page were provided by Lennox International Inc. To learn more about heating, cooling and indoor air quality solutions we can offer, please visit Lennox Residential.

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Testimonials

  • We appreciated the fast and friendly service that your company provided, the guys were very friendly and patiently answered any questions we had, they also did a great job cleaning up.  My husband and I will be calling your company from now on and will recommend your company highly.  Thank You  

    Chuck & Jean - Watson, IL.

  • "I want to compliment you for your staff at Merz. The young lady who answered the phone after 8PM could tell I was a desperate housewife –NO AIR CONDITIONING. The young man who made the service call certainly deserves a pat on the back. He was so courteous and efficient. Thank you!"

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    – Carolyn (Effingham)

  • "Thank you for the prompt service I received on my furnace. It was very frustrating to hear it wasn’t working and me down in Florida. Again, Thank You."

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    – Juanita (Effingham)

  • "Thank you for the work done. The two gentlemen that came to do the work were pleasant & nice to deal with when each were here to do their part of the job required."

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    – Raymond (Effingham)

  • "Thanks again for all of your help. We really appreciate the professionalism of your guys and how nice they were while they were out here working."

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    – Jason (Charleston)

  • "Just wanted to thank you and the crew that installed my new AC & furnace, their expertise and skills are much appreciated! The personal touch in keeping my house clean was nice also."

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    – Karen (Robinson)

  • "Thanks so much for your prompt and courteous service. I really appreciated you getting my system in and operational in one day. I am Cool! Also enjoyed the service guys, very helpful. With sincere appreciation- "

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    – Cheryl (Vandalia)

  • "Thank You Merz Heating & Air Conditioning for an awesome job installing our new furnace! Great installation & customer service! If you have heating & air needs give Daryl Smith a call, he's the man!!"

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    – Jenna (Effingham)