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Why Is My Heat Pump Leaking Water?

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If you have a heat pump, you benefit from efficient heating and cooling provided by a single piece of equipment. As with a traditional furnace and air conditioner combo, things sometimes go wrong. Learn how a heat pump works to keep your home comfortable all year round and what could cause it to leak water.

How a Heat Pump Works

To understand how a heat pump could leak, it’s helpful to understand more about how a heat pump works. This heating and cooling device uses refrigerant to move heat from one location to another.

In cooling mode, a heat pump works exactly the same as an air conditioner to extract heat from indoors and exhaust it outside. Indoor evaporator coils heat up as air passes over them. The refrigerant inside the coils travels outside to the condensing unit where the heat is exhausted. With the refrigerant cool again, it’s ready to circulate back inside and absorb more heat.

Along with removing heat, a heat pump in cooling mode also removes excess moisture from the air. Under normal conditions, condensation forms on the evaporator coils and drips away down the condensate drain.

The opposite occurs in the winter when heat is extracted from outdoor air and exhausted inside your home. Condensation can form on the outdoor unit as heat is extracted from the air.

Reasons Why a Heat Pump Can Leak Water

Ice on the evaporator coils – If your heat pump’s refrigerant levels are low in the summer, condensation on the indoor evaporator coils can freeze. Ice impairs heat transfer and prevents your heat pump from working properly. When the unit cycles off, the ice may start to melt, which causes the leaks you see.

Condensate drain problems – The drain meant to carry excess moisture away can become clogged with algae, mold, or debris. This can cause the drain pan to overflow, resulting in a pool around your heat pump.

Defrost mode in winter – If a frozen pond forms around your heat pump in the winter, don’t fret; this is normal operation. When ice begins to form on the outdoor condensing unit, defrost mode sends heat back outside to melt the ice. The water is then free to drip to the ground, where sub-freezing temperatures turn it back into ice.

Heat Pump Repair in New Jersey

There’s a reason why homeowners trust Air Professionals Heating & Air Conditioning for heat pump repairs in New Jersey. Our NATE-certified technicians are equipped with the tools and knowledge to repair any brand of heat pump, including Carrier.

At Air Pros, we offer:

  • 100% satisfaction guarantee
  • Licensed and insured HVAC technicians
  • 24-hour emergency heat pump repairs

Our Service Areas Include:

Hunterdon County: Annandale, Asbury, Bloomsbury, Califon, Clinton, Flemington, Frenchtown, Glen Gardner, Hampton, High Bridge, Lambertville, Lebanon, Milford, Pittstown, Ringoes, Stockton, Three Bridges, and Whitehouse Station

Somerset County: Basking Ridge, Bedminster, Belle Mead, Bernardsville, Bound Brook, Branchburg, Bridgewater, Far Hills, Franklin Park, Gladstone, Green Brook, Hillsborough, Kingston, Martinsville, Millstone, Montgomery, Neshanic Station, North Plainfield, Peapack, Raritan, Rocky Hill, Skillman, Somerset, Somerville, South Bound Brook, and Warren

Mercer County: East Windsor, Ewing, Hamilton Township, Hopewell Township, Lawrence Township, Mercerville, Robbinsville, and West Windsor Township

Middlesex County: East Brunswick, Kendall Park, New Brunswick, Highland Park, Plainsboro Township, South Brunswick, and South Plainfield

Warren County: Alpha, Greenwich, Lopatcong Township, Phillipsburg, and Pohatcong Township