frosty winter, ice or frozen condensation on window sill. fogged window, fragment. heat leakage, heating problems. poor

air airing apartment bad climate cold condensate condensation condensed construction cool crack damp dampness dew droplet drops evaporation exchange fogged fragment frame frost frosty frozen glass hand heat heating house humidity ice icicle increased indoor inside leakage moist moisture penetrates plastic point poor problem problems room sealer sill steamy unventilated ventilation weather wet window winter