Find an Installer

Finding your nearest Harlequin Tankmark Accredited Installer is easy. Simply enter your details to find the closest installer to you: 

Approved by Harlequin: 

Joining the Network 

The Harlequin Tankmark Accredited Installer network is a closed and controlled directory run by Harlequin MFG.   This ensures only the best and most realiable installers of  Harlequin products are connected with Harlequin customers. 

Harlequin always welcome new applicants to the network and encourage installers to get in contact using the details below.  

The network currently provides details of installers for:
  • Oil Tanks
  • Sewage Treatment Plants
  • Septic Tanks  
If you have the experience and business acumen to offer Harlequin customers an expert service for the installation of their product, contact the Harlequin office today:


T: 028 9261 1077