They do! But my hands hurt typing at 55 after a while and my children get grumpy. I put a lot of insulation and air sealing into my house when I bought it and o

They do! But my hands hurt typing at 55 after a while and my children get grumpy. I put a lot of insulation and air sealing into my house when I bought it and our heating bills are ... ok. About $250/month during the colder months to keep it at 65-66 in the main floor. I can't imagine 72.