Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Lennox HP19-511-1P

This is a 1989 unit that finally bit the dust. It has served us well but it’s time for a new one. I believe it’s a 4 ton but I don’t know the BTUs of the system. I would like to get the equivalent of what we had. Any help would be appreciated 

Comments

  • pecmsg
    pecmsg Member Posts: 6,023
    edited September 2023
    Get an accurate heat load loss performed. 
    Has the duct static pressure been tested?

    most systems I see are oversized on undersized ducts. 

    When hot and humid how often did it cycle?
    mattmia2
  • JUGHNE
    JUGHNE Member Posts: 11,401
    Lennox manual indicated the 511 having a max output of 4 tons.

    Being installed in 1989 it is most likely oversized.

    And under ducted as stated above.

Welcome

It looks like you're new here. Sign in or register to get started.

Welcome

It looks like you're new here. Sign in or register to get started.