temps have been in the 20 to 50 degree farenheight(sp???) range. not really that cold compared to you cheeseheads out there, or our bretheren in the great white north eh.the common denomonator is the WIFE WITH COLD FEET!!!! I'll look at the monovalve now to see if it is working properly. Larry Bible--what am I looking for in a non-functioning monovalve, please. Thank you, Kevin.