Heat pumps and mini splits in King Mountain

The houses in King Mountain

King Mountain is a split personality: newer subdivision housing on the slopes below the mountain itself, and older parcels — some annexed from the county — with 1970s and 80s houses on larger, less regular lots. The new construction is two-storey with a slab or shallow crawlspace and complete ductwork; the older houses are ramblers and split-entries with crawlspaces and duct systems of uncertain vintage. Commercial and light-industrial uses press in from the Bakerview and Guide sides.

What is probably heating yours right now

The recent subdivisions were built with gas furnaces and ducts, and a few later phases came with heat pumps already installed. The older annexed parcels are the interesting ones: electric furnaces, full baseboard, and occasionally a wood stove doing more work than it should, because gas service arrived on some of those streets late or not at all. Where the existing heat is electric resistance, the PSE conversion rebate is in play; where it is a wood stove, the Northwest Clean Air Agency change-out program is worth asking about.

What makes a King Mountain install different

The first thing we settle on a King Mountain address is which side of the city line you are on, because the neighborhood butts up against unincorporated Whatcom County and that decides whether the mechanical permit goes to City of Bellingham Building Services or to Whatcom County Planning & Development Services. Elevation matters too: the upper streets sit meaningfully higher than downtown and hold snow and freezing fog longer, so the condenser goes on a raised stand with clear defrost drainage. On the older parcels, expect to verify panel capacity before committing to a ducted system.

Sizing for 19°F

Every Bellingham address shares the same code design temperature — 19°F at station Bellingham 2 N, colder than Sea-Tac's 24°F. What differs street to street is the envelope. A 1910s one-and-a-half storey with knee walls and original single glazing carries a very different load from a mid-2000s two-storey built to a modern code, even at identical square footage. That is why we run the load rather than multiplying square feet by a constant.

We know the streets

If you are near King Mountain, the King Mountain trail system, the Bakerview and Guide Meridian junction, we have worked nearby. Ask and we will tell you honestly what we have run into on that side of town.