To get email notification when someone adds to a thread you're following, click on the star in the thread's header and it will turn yellow; click again to turn it off. To edit your profile, click on the gear.
The Wall has a powerful search engine that will go all the way back to 2002. Use "quotation marks" around multiple-word searches. RIGHT-CLICK on the results and choose Open Link In New Window so you'll be able to get back to your results. Happy searching!
In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Need to contact us? Visit

Packaged Rooftop versus Hydronic Costs

RayWohlfarthRayWohlfarth Member Posts: 119
In my market place (Pittsburgh,PA), it seems that packaged rooftop units are the only thing being installed. A new building with hydronics would probably cause the Mason Dixon line to split. I would like to see if anyone has seen a study that shows the operating cost comparison of a packaged rooftop unit and a hydronic system. Thanks in advance.

Ray Wohlfarth
Ray Wohlfarth
Boiler Lessons
Click here to take Ray's class.
Click here to buy Ray's books.


  • SteamheadSteamhead Member Posts: 10,951
    Something to think about

    a rooftop unit is located outside the building envelope, so it loses a lot more of the heat it generates than a hydronic system does. 
    All Steamed Up, Inc.
    "Reducing our country's energy consumption, one system at a time"
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Baltimore, MD (USA) and consulting anywhere.
  • RayWohlfarthRayWohlfarth Member Posts: 119

    Thanks I will try to factor that in as well
    Ray Wohlfarth
    Boiler Lessons
    Click here to take Ray's class.
    Click here to buy Ray's books.
  • jumperjumper Member Posts: 864
    unitary rooftop oversold

    Unitary rooftops are the most oversold system. Everything to be serviced is in one package out there. And a packaged unit is cheaper to install than built up.

    Of course a roof lasts longer if nobody is on it dropping their tools.
  • nicholas bonham-carternicholas bonham-carter Member Posts: 6,375
    roof damage

    the worst thing about rooftop units are the cabinet screws which never get put back in, and lie on the roof waiting for a step to push them ithrough the roof membrane!--nbc
This discussion has been closed.


It looks like you're new here. If you want to get involved, click one of these buttons!