Branch · Yakima, WA
Furnace, heat pump and air conditioning wiring in Yakima
Dedicated circuits and disconnects for furnaces, heat pumps and air conditioners, wired to code so the equipment and its warranty are protected.
Chapter 01
Why equipment fails from the wiring side
A furnace, a heat pump and an air conditioner are only as dependable as the circuit feeding them. When a unit short cycles, trips its breaker on the first hot afternoon in Yakima or quits on the first cold morning, the cause is often not the machine. It is a circuit that was undersized for the motor, a connection that has loosened over a few seasons, or a disconnect that was never installed. The motor draws a heavy surge when it starts, and a thin or shared circuit shows its weakness exactly then.
Incorrect wiring can lead to system failure, fire hazards, code violations and voided warranties. That last one catches people out. A manufacturer can point at a bad circuit when a compressor fails, and a repair bill that should have been covered lands on the homeowner instead. Castle holds Washington L&I electrical contractor license CASTLPE842NN, so the wiring behind the equipment is done by a licensed electrical contractor and not left to whoever has a spare afternoon.
Most electrical repairs start at the $95 hourly rate, and the final price depends on the scope of the work. A call to (509) 580-0470 is free to make, and consultations are free with an estimate typically ready within 48 hours.

New meter base and disconnect mounted on grey siding beside a fresh trench
Furnace, heat pump and air conditioning wiring
Castle wires furnaces, heat pumps and air conditioners on dedicated circuits, each with its own breaker sized to the nameplate on the equipment. A dedicated circuit means the furnace does not share a line with the garage freezer or the basement lights, and a surge on one does not trip the other. The photo above shows the same idea at the meter: a new disconnect mounted on grey siding beside a fresh trench, the visible shutoff that lets a technician work on the equipment safely.
A disconnect within sight of the outdoor unit or the furnace is not decoration. It is how a service technician kills power at the machine without walking back to the panel, and it is a point inspectors look for. The crew installs it, labels it and checks it before leaving.
The electricians coordinate with your HVAC installer, so the circuit is ready the day the new unit arrives. Alex and Omar, the two electricians customers name most often, diagnose a dead unit by working from the panel out to the equipment. John Young has called them twice for electrical issues and wrote: "Both times they have been on time, quick, thorough, and very kind."
Chapter 03
The risks of DIY HVAC wiring, and where Castle works
Do-it-yourself HVAC wiring looks simple until a wire size is wrong. Equipment circuits carry real current for hours at a stretch, and a conductor that is one size too small runs warm inside a wall where nobody sees it. Add the voided warranty and the problem at a home sale or an insurance renewal, and a weekend project becomes an expensive one. If a unit stopped working after a swap or a repair, call before you reset the breaker a third time.
Castle serves Yakima, Selah, Naches, Moxee, Wapato, Toppenish, Harrah, White Swan, Zillah, Granger, Outlook, Sunnyside, Grandview, Mabton, Ellensburg, Cle Elum, Kittitas and Roslyn, across Yakima and Kittitas counties. Rob Weaver, the owner, started the company in 1991, and the shop is open 24 hours, seven days a week.
If the equipment sits in a pump house, a shop or an outbuilding, the same crew handles it. Castle is also the Yakima outfit that pulls well pumps, so a heater in a pump house or a shop furnace is just another branch off the same panel.
"Both times they have been on time, quick, thorough, and very kind." John Young, Google review, 5 stars. Castle Pump & Electric holds Washington L&I electrical contractor license CASTLPE842NN.