Would you recommend Sunshades/HeatShields over a cover if I keep my aircraft in a hangar and only use covers for day and cross-country trips?

HeatShields: Custom-fit interior sunshades



We would only recommend using sun shields 'HeatShields' for temporary use during day trips or for a couple of hours at a time during a short layover. If used too frequently over time, the silver reflective surface can cause damage to your Plexiglas windscreen and laminated windshields as it traps heat in between your glass and the HeatShield.  

Additionally, more times than not, the HeatShields are more difficult to install than an Exterior Canopy Cover. Imagine having to crawl around a cramped cabin of a Cessna 182 or Piper PA-28 to install a HeatShield in every window instead of installing a cover over the exterior of your plane.

Canopy Cover: Extended version down to the wing root



Exterior Canopy Covers are a more effective protective solution for your aircraft. While being equally effective at keeping your cabin/cockpit cool and protecting your avionics panel and upholstery as a HeatShield set would, exterior covers by Bruce's will protect the exterior of your glass and paint and will also stop any leaks in the canopy or door jamb seals.