We have the replacement surge protector you need to repair your HVAC system. Surge protectors protect electronic appliances from being damaged by power surges. A power surge is an increase in voltage above usual, safe levels. A surge protector works by diverting electricity above a certain level into a grounding wire. High energy devices such as air conditioners can cause power surges or spikes because when the power is switched on or off, the demand for power in the building’s electrical system changes dramatically, which can upset the flow of electricity. We stock surge protectors that will guard against damage that can occur to devices as the result of a power surge or spike.