airtrackinc

yes size will be diffrent

It is normal for a heat pump to have a build up of white frost on the outside coil during cold damp weather. The build up can completely cover the outdoor unit. If you have a heavy build up clear ice, you probably need to call for service. A heat pump will change to defrost mode automatically every 30-90 minutes depending on how the unit is set-up. However, unless you are watching the outdoor unit when it defrosts, you may never notice that it has defrosted, because it will begin to frost up again as soon as it changes back to heating mode. A heat pump that is not defrosting normally is more expensive to operate and extended operation with a heavy build up of ice could possibly damage the unit. Some conditions that can make icing worse can include, rain dripping from the roof directly into the outdoor unit, dirty coils, coils covered with leaves, grass, etc... If water is dripping from the roof into the outdoor unit, this will cause the unit to ice up more than normal and maybe even to the point, it can not remove all the ice during the defrost cycle. To help reduce this, a simple piece of metal can be added to the second row of shingles that is about 2 feet wider than the unit and it will force to water to drain to each side of the metal strip and miss the outdoor unit. Gutters will also eliminate this problem. Never cover your outdoor unit with anything in an attempt to keep moisture out as this will only reduce air flow and make the situation worse. You could also cause permanent damage to your unit.