If the solution to the temperature issue is colder air coming in, then it is possible that this will work.
Get a FP HC150 humidifier replacement humidifier chamber,
and a short connecting tube,
and a small ice chest,
and drill a couple of holes in the chest to accommodate the short hose and the regular hose,
fill the chest partly with ice, insert the HC150 chamber (with water if needed), connect to the Trilogy and off to sleep.
With no heat in the humidifier, the ice in the chest will keep the humidifier chamber nicely cold all night long.
The chamber and the hose are available from our hosts, CPAP.COM and the chest from Walmart, Target, etc.
You wouldn't get much in the way of humidity but the temperature should be low enough. Some experimentation might be needed.
Oracle 452 Lessons Learned Updated
DSX900 AutoSV with HC150 extra humidifier and Hibernite heated hose
Settings: EPAP Min-10.0, EPAP Max-17, PS Min-3, PS Max-10, Max Pressure-20, Rate-Auto, Biflex-1.
Sleepyhead and Encore Pro 2.21.