Top Shelf Plumbing & Heating recently completed this Pennco 16 Series steam boiler replacement in Scranton, Pennsylvania. The installation was built around manufacturer-correct near-boiler piping, dependable condensate return, and the details an older one-pipe steam system needs to heat properly.
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Replacing the boiler and deteriorated returns
The aging boiler was removed and replaced with a properly sized Pennco 16 Series steam boiler. Deteriorated wet-return piping was also replaced to restore a reliable path for condensate returning from the system.
Near-boiler piping built for dry steam
The new boiler was piped with dual boiler risers, a full-size black-steel header, a properly sized equalizer, and a Hartford Loop. This arrangement helps separate water from the steam before it enters the system mains, supporting quieter and more even distribution.
Venting, startup, and system balancing
Main vents and radiator air vents were upgraded where needed. After installation, the boiler was filled, fired, skimmed, tested, and balanced. Startup is a critical part of steam-boiler replacement because oils left from new piping can cause unstable water and wet steam.
Steam workmanship for Scranton homes
Steam heating is dependable when the boiler is sized to the connected radiation and the piping, venting, pressure controls, and returns work together. Top Shelf provides steam boiler installation, repair, and system corrections throughout Scranton and surrounding NEPA communities.
Installation photos




Steam Boiler Replacement Scranton, PA
Steam boiler replacement in Scranton, PA with connected-radiation sizing, manufacturer-correct near-boiler piping, low-pressure controls, skimming, and startup.
Frequently asked questions
Why are two boiler risers used on this Pennco installation?
Using both boiler outlets and the required full-size header helps reduce steam velocity and separate water before steam enters the system mains.
What does the Hartford Loop do?
The Hartford Loop connects the return near the boiler waterline and limits how much boiler water can be lost if a return pipe fails.
Why does a new steam boiler need to be skimmed?
Threading and assembly introduce oils that can make the boiler water surge and carry water into the steam piping. Skimming removes those surface oils.

