We purchased a rental house along the lake upstate and knew that my pal and I would use it for a few weeks out of the year ourselves too. It would be a good way to have a holiday house that paid for itself. My pal and I made sure to have is furnished with just about everything a renter would need with the exception of their food and linens. My pal and I even purchased kayaks for the lake that they could use. My pal and I only used the house in what would be considered the “off season” because my pal and I didn’t want to limit the renters from their choices dring prime holiday times. Since the weather was consistently mild while my pal and I were there, my pal and I were able to have the windows and doors open. My pal and I seldom used the Heating and A/C system. If my pal and I did turn on the heat or a/c it was only while my pal and I were sleeping. For this reason, my pal and I never noticed the concern with the windows. My pal and I started getting energy bills for the utilities during the rental season and couldn’t know how high they were. When my sister went to check it out she found that the Heating and A/C system was running almost non stop. She checked the control component and it seemed fine. She then noticed a draft in the residing room and found that the windows were not sealed correctly. The Heating and A/C system was running so strenuous because the cold air from outside was penetrating the windows. My pal and I called a local contractor to service the concern and then had the Heating and A/C system ran tests on. My pal and I figured it had been toiling so strenuous that my pal and I might as well have it tuned up and make sure it wasn’t disfigurementd.