Some water should be expected around the outdoor portion of your heat pump in winter due to any collected snow or ice melting off of the unit, but extensive water during dry weather or water around the indoor portion of the unit can indicate a problem. The following are the three most likely reasons why your heat pump is leaking. By catching the problem early, you can have it repaired before more severe damage occurs.

1. Drain Blockages

Excess condensation is an issue in every heat pump since water plays a role in the appliance's ability to regulate temperature. For this reason, every heat pump is equipped with condensate drain lines, a drip pan, and a drain — much like those found on air conditioners. If the lines or drain becomes blocked, then water can appear to leak from your heat pump or pool around it. A common cause for a blockage is algae growing in the line, but any debris could be the problem. Fortunately, the issue is simple to fix. The drain lines will need to be flushed and cleaned, and the drain may also require unclogging and cleaning. In some cases, the drain pan may require replacement if it has developed a crack or hole.

2. Low Refrigerant

Most heat pumps are integrated with an air conditioner, so the cause of the water may actually be due to low refrigerant in the cooling portion of your appliance. This is the most likely cause if you only notice the water leak in warmer weather. When the refrigerant level is low, the evaporator coils become prone to freezing up. Then, as the ice melts, the water pools under and around your heat pump. A technician will check the system for any leaks. Once the leaks are repaired, the refrigerant can be recharged and the problem is solved.

3. Water Leaks

A water leak can occur almost anywhere in the heat pump system, since water is one of the main components in the appliance's temperature regulation system. Lack of maintenance is the usual cause. Without proper annual tune-ups, the likelihood of dirty evaporator coils leading to condensation, leaks in water lines, or a leak in the seals inside the pump itself increases. A yearly service visit ensures that all parts are properly lubricated and that valves and seals are replaced as they age.

Contact a company like Keil Plumbing & Heating Inc to learn more about heating services.