A SEER rating indicates how effectively an air conditioner or heat pump can cool a house. A higher SEER rating ... 20 Btu per square foot for average insulation and windows. For example, a 2,000 ...

Whether your home doesn’t have central air conditioning, or you like to use ... cooler air from the outside (or a cooler part of the house) to the warm areas. Pick lighter fabrics, such as ...

The insulation work made a noticeable difference. “The winter felt less cold,” said Miku Oi, 18, vice president of the student council. “Now, the air conditioner in there is also working ...