Our water is froze up this morning. We are 20 some odd miles from San Antonio. We have a new Big Country 3450Ts. Our first payment is due tommorrow. This is ridiculous. I have read on this site about Heartland owners of all models having the water line freeze from the tank to the pump, as this is the case with ours. We had the furnance running at 70 all night, not that would matter as there is is virtually no heat getting back to the frozen area. This morning it was 10 outside, I stuck a digital thermometer down under the counter where the pipes and drain go down underneath and it said 27.4 at 7 this morning. I turned the heat up to 75 and there is still no improvement. This pretty much shows that there is not enough heat getting to the right place. Why do all the Heartland owners have to take the bottum loose, crawl under there and insulate this pipe, or try to change some ducting to try to get this problem fixed? When we bought this Heartland product, it showed in the brochures that it is tested down to zero. With our old rv we never had a cold weather problem. I guess I will investigate Texas's lemon law out.