I have a 37' sandpiper 5th wheel. I was wondering if my furnance was putting out enough heat. Today it was 34 degrees out, and I set the thermostat to 60 degrees to see how long it would take to reach 60 degrees. Well one hour and 10 minutes later it at 54 degrees, seems like it should heat up the inside alittle faster then that. What do you guys/gals think could be the problem, this is a brand new trailer, and this is probably the 3rd time I have lit up the furnance. I believe its a 30000 btu funance. I have a 1983 35' Yellowstone that seems to heat up faster then this, with alot more airleaks.