Ducted Heat Pumps for Bungalows and Townhomes in Ballard, WA

Ballard heat pump projects split along the age of the house. Bungalows in Loyal Heights, Whittier Heights and Sunset Hill usually have ducts a heat pump can use, while many of the townhomes built in central Ballard over the past few decades do not. The Seattle Heat Pump Company plans ducted heat pump installations across Ballard and works out first which kind of house it is dealing with, with the work carried out by licensed and insured contractors.

City of Seattle open data counts 1,615 single-family heat pump trade permits in the Ballard district over the latest three years of records, about 127 for every 1,000 one- and two-unit homes. How those permits break down by neighborhood is the useful part.

Two housing stocks on the same street

About a quarter of Ballard’s homes were built before 1940, yet the median home dates from the 1980s in Census data. That combination comes from infill: older single-family lots redeveloped into townhomes and small multi-unit buildings, much of it in and around the Ballard core.

The permits mirror it. In Whittier Heights, 87 of 289 heat pump permits named ducted equipment, about 30%. Sunset Hill was close behind at 83 of 287, and Loyal Heights, the busiest Ballard neighborhood with 435 permits, had 98. In the Ballard core neighborhood itself, only 2 of 269 permits named ducted equipment. Many permit descriptions do not mention ducts either way, so these are floors rather than exact shares, but a gap that wide says the housing is different.

If you have a bungalow or older house

An older Ballard house with a basement furnace is classic ducted heat pump territory. The plan follows the steps on our ducted heat pump installation page: a room-by-room load calculation for Seattle’s 24°F design day, then a static pressure test on the ducts, a look at the electrical panel and a choice of outdoor location.

The ducts deserve the most attention. A furnace heats air hot enough that a modest airflow carries the house, while a heat pump delivers cooler air and has to move more of it. A bungalow with one central return and runs that were extended when the attic was finished can fall short. The fixes are usually modest: an added return, a resized trunk or sealed joints in the basement. Heat pump with existing ductwork explains the test and what each result points to.

About 909 Ballard households still heat with oil, roughly 4% by Census estimates. For those houses the project becomes an oil to heat pump conversion, with the tank decommissioned by an ICC-certified decommissioner under a Seattle Fire Department permit after the new system is running.

If you have a townhome

A townhome raises a different first question: is there a duct system at all? Where a townhome was built with electric baseboards or wall heaters, a ducted heat pump needs an air handler location and duct paths on every floor. Closets, dropped soffits and mechanical chases can sometimes provide them; finished ceilings with no cavities usually cannot without significant demolition. In that case a ductless system tends to fit the building better, and ducted vs ductless heat pumps compares the two honestly. We plan ducted systems, so a townhome that is a poor ducted fit gets told that plainly.

Where a townhome already has a small ducted system, such as an air handler in a closet or a garage, the job is a replacement rather than a new design. Washington’s refrigerant rule matters here. Since January 1, 2026, new residential heat pumps and air conditioners must use a refrigerant with a global warming potential under 750, which excludes R-410A. A replacement usually means a matched indoor coil or air handler replacement alongside the outdoor unit, plus a check of whether the existing line set can be reused. The refrigerant change guide covers what the newer refrigerants require, and heat pump replacement covers the full scope.

Townhome sites are also tight. Outdoor space may be a small patio or a narrow strip between buildings, and Seattle measures noise at the property line: 55 dBA by day and 45 dBA at night. Equipment in a side yard goes through SDCI’s noise review, which a predicted 47 dBA or less on the heating rating passes. Choosing a quiet variable-speed model and a vibration-isolating pad or bracket is part of making a cramped location work.

Salt exposure along Shilshole and Sunset Hill

Ballard’s west edge runs along Shilshole Bay from the Locks to Golden Gardens, with Sunset Hill’s bluff above it. Houses facing the water take salt-laden wind, and salt corrodes the thin fins of an outdoor coil faster than inland air does. Manufacturers treat it as a maintenance and specification issue. Mitsubishi Electric offers coil coatings and a seacoast protection package on some outdoor units, and Carrier advises washing coastal units about every three months. No manufacturer publishes a distance threshold, so a bluff-top or waterfront location is planned as coastal, with the unit sheltered on the lee side where the yard allows.

Permits, rebates and running cost

In Seattle a split system needs a refrigeration permit pulled by a licensed refrigeration contractor and an electrical permit, plus a furnace or mechanical permit when the indoor equipment changes. SDCI’s current fees for a typical job run about $192 to $556.

Ballard is City Light territory, where a heat pump beats a 95% efficient gas furnace on energy cost once it averages a coefficient of performance of about 2.2 at the current Seattle rate of 13.38 cents per kWh. For homes leaving baseboard heat the comparison is starker, because a baseboard turns one unit of electricity into one unit of heat while a heat pump moves several units of heat for each one it consumes in mild weather, and still more than one on a cold night. City Light’s contractor discount is $300 or $600 on qualifying equipment, one system per home, and Seattle Clean Heat adds $2,000 for qualifying oil conversions. The Seattle installation cost guide shows how the price ranges build.

North of 85th Street the housing shifts toward postwar homes; see Greenwood and Northwest Seattle. Across the ship canal, Magnolia and Queen Anne share Ballard’s saltwater edge.