Tech support is available by phone  (616-245-7700) Monday through Friday, between 10AM-12PM and 2PM-4PM EST. You may also send a support request via email to

When contacting support, be sure to have your product’s serial number and software version ready as this information may be relevant to the troubleshooting process.

If you have a unit that you believe is in need of repair, you must contact support for authorization before returning the unit.

*** Horizon WS / HS / and 1st generation HX EFIS: As of January 1, 2022 we are no longer able to repair these products as our supply of spare parts for these products have been exhausted and are no longer available from our suppliers. ***

Once you have obtained return authorization, please fill out the form below and return it with the unit: