We are coming up on 7 years of ownership with our '04 Itasca Horizon 36GD with the CAT C-7 330HP and, right at 82K miles. The basement A/C has done superbly in all weather, A/C or heating. Hot weather taxes ANY A/C unit, not just basement A/Cs. These are primarily residential A/C units and as such, many home technicians can actually work on them They just don't know how to get to them, the owners have to show them.
The Horizon is the sister ship to the Vectra, almost same exact components/layout. WE love ours. It's been a great coach now for almost 7 years and the stated miles we've compiled. We are, at present getting new carpet. 14 years and that many miles has taken its toll on Off White carpeting.
Scott
Scott and Karla SDFD RETIRED2004 Itasca Horizon, 36GD Slate Blue 330 CAT
2011 GMC Sierra 1500 Ext Cab 4x4 Toad
2008 Caliente Red LVL II GL 1800 Goldwing KI60ND