At Abueva Builders we believe in going beyond what code requires. Until the last decade or so, very little in the way of insulation or air sealing was required in residential construction; and HVAC contractors have often relied on “rules of thumb” in terms of designing heating and cooling systems. But the comfort of a home is directly proportional to the uniformity of the temperature throughout the home. Lack of uniformity is so common that  most homeowners just accept it!  Drafts around windows and doors or one room that is always colder or hotter than all the rest is somewhat common place.