Can unit be as close as 4" to brick wall. If credit card is used is there a charge ?

Location is probably the most important consideration when installing a heat pump. Poor installation can adversely affect performance, as well as cause problems with servicing and overall customer satisfaction. Have as much space as possible between the heater and house or any overhangs. As far as the credit card, there is a 3% credit charge. If you have any further questions, please give us a call, thanks!