Heat pump repair in Dumfries.

Inside the Town of Dumfries just over half of owner homes heat with electricity, which is mostly heat pumps, and townhouses are almost the same share of the housing as detached houses. That’s a lot of outdoor units sitting in rows. Cherry Hill and the Montclair side of the ZIP lean toward gas, so a heat pump call there tends to be a newer house with a pump added or swapped for an air conditioner.

The Town’s typical owner home was built in 1985, and the townhouse rows, built from the 1970s into the early 1990s, are on their second or third outdoor unit. A pump from the early 2000s here is at the age where the capacitor and contactor start giving out, and in a row house the repair is usually small because the air handler is easy to reach. Pumps from before 2010 often hold R-22, which is worth asking about before anybody opens a refrigerant line.

In a middle townhouse the heat pump works less than in an end unit, because two walls are shared with heated neighbors. If an end house is the one complaining about cold rooms and an inside unit down the row is fine, that usually points to the house, not the pump, and we may suggest a duct or airflow fix instead. Tell us where in the row you are when you call.

Some Town streets sit low, close to the tidal flats the Town’s own plans describe. A heat pump on a pad that holds standing water after rain can corrode at the base and short its controls. Elevating the pad a few inches helps, and it’s something we can do on a repair visit if the unit’s condition calls for it. Dominion is the electric company on the Town’s utility list, and if the whole street loses power, the first question is always whether the lights are on.