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d homeowners.
Natural draft reliability and high
efficiency too. Choose intermittent
ignition or standing pilot.
Enjoy the easy installation and reliable operation
that natural draft design provides, plus high
efficiency too. With intermittent pilot ignition,
Sentry AFUE's range from 83.1% to 84.4%.
Standing pilot AFUE to 83% —
highest in the industry!
Sentry standing pilot models are the most efficient
in the industry, according to the I=B=R Boiler
Ratings directory. Now, with AFUE’s to 83%,
you can enjoy standing pilot reliability and high
efficiency too!
All models include an automatic vent damper.