Hvac adapter curb and installation method

An adapter curb for supporting a new HVAC unit on an existing HVAC curb at a work site, the adapter curb comprising:

• an adapter curb frame including an upper end sized to mate with the new HVAC unit, a lower end sized to mate with the existing HVAC curb, and peripheral walls having an interior surface;
• an electrical connection assembly installed adjacent the interior surface of the peripheral walls;
• and
• an access opening defined in one of the peripheral walls adjacent the electrical connection assembly;
• and
• an access panel positioned over the access opening, the access panel configured to selectively provide access to the electrical connection assembly through the access opening from an exterior of the adapter curb frame.

An adapter curb for supporting a new HVAC unit on an existing HVAC curb at a work site, the adapter curb comprising:

• an adapter curb frame including an upper end sized to mate with the new HVAC unit, a lower end sized to mate with the existing HVAC curb, and peripheral walls extending between the upper end and the lower end of adapter curb frame, the peripheral walls having an interior surface;
• an electrical junction box installed adjacent the interior surface of the peripheral walls, the electrical junction box including at least one electrical connection port;
• and
• a removable access panel defined in one of the peripheral walls and positioned over the junction box, the junction box accessible from an exterior of the adapter curb frame when the access panel is removed.