One System for Heating and Cooling — Sized Right for Your Home
A heat pump can heat and cool your home from a single efficient system. We give you an honest read on whether it fits, size it properly, and explain every option in plain language.
One System for Heating and Cooling — Sized Right
A heat pump does the work of both a furnace and an air conditioner from one system, moving heat in and out of your home instead of burning fuel to make it. In the Pacific Northwest's mild, damp climate that makes them one of the most efficient ways to stay comfortable year-round — heating in winter and cooling in summer from a single outdoor unit.
But a heat pump isn't the right answer for every home. At Coast we start by understanding your home and your heating bills, then tell you honestly whether a heat pump makes sense — no confusing sales pitch and no surprises halfway through the job.
A Heat Pump Built Around Your Home
A heat pump isn't one-size-fits-all. Your home's size, insulation, windows, layout, existing ductwork, electrical service, and how cold it gets all shape which system is right for you.
Installing a heat pump that's larger than necessary doesn't mean better comfort. An improperly sized system can lead to short cycling, uneven temperatures, higher electric use, and extra wear on the equipment.
That's why Coast starts with the home — not the equipment catalog. We evaluate your current setup and determine the capacity, efficiency level, and configuration that best fits your space and our local climate.
Ready to move forward?
0% financing for 12 months on qualifying systems — View financing options →
Is a Heat Pump Right for You? We'll Help You Decide.
Switching to a heat pump makes a lot of sense for many South King County homes — especially those replacing aging equipment, running expensive electric resistance heat, or wanting air conditioning added at the same time. But if your current system is working well and the numbers don't favor a change, we'll tell you that too.
We'll look at your home, your heating and cooling needs, and your energy costs, then walk you through what a heat pump would do for you and what it would cost — before you decide anything.
Our job is to give you the information. The decision stays yours.
Signs a Heat Pump May Fit Your Home
Not sure whether a heat pump is worth considering? One item alone doesn't make the case — but if several of these describe your situation, it's worth comparing a heat pump to your current setup.
Wondering if a heat pump fits? We'll give you an honest assessment — free.
(206) 920-5547Choosing the Right Heat Pump
There are a lot of heat pumps on the market. You shouldn't have to become an HVAC expert just to choose one. We simplify the decision by focusing on what actually matters for your home — and explaining the tradeoffs in plain language so you can compare options confidently.
Ducted or Ductless
If your home already has good ductwork, a ducted heat pump ties right in. Homes without ducts — or with rooms the ducts never reached — are often better served by a ductless system.
Cold-Climate Performance
Not every heat pump holds output when temperatures drop. For Pacific Northwest winters we recommend cold-climate models built to keep heating steady through the coldest weeks.
Sizing With a Real Load Calc
A heat pump has to match your home's actual heating and cooling load. We run a proper Manual J calculation instead of guessing by square footage, so the system isn't over- or undersized.
Single or Variable Speed
Variable-speed heat pumps hold temperatures more evenly, run quieter, and use less energy at part load. We explain where that upgrade is worth it and where it isn't.
What Happens During a Heat Pump Installation?
We believe a professional installation should feel organized from the moment we arrive. Here's exactly what to expect — no mystery, no vague “we'll figure it out when we get there.”
Assess Your Home
We look at your existing heating and cooling, ductwork, insulation, electrical service, and the way you use each room before recommending anything.
Select the Right System
We walk you through ducted vs ductless, cold-climate options, and sizing — matching the system to your home, priorities, and budget with no pressure to buy up.
Remove the Old Equipment
Any equipment being replaced is safely disconnected, refrigerant recovered to code, and hauled away while we protect the surrounding area.
Install the Heat Pump
We set the outdoor unit and indoor components, then handle refrigerant lines, electrical, condensate drainage, duct or air-handler connections, and the thermostat.
Commission the System
We charge the system correctly, verify refrigerant levels and airflow, and test both heating and cooling modes so it performs the way it was designed to.
Walk You Through Everything
We show you how to run the system in both seasons, cover filters and maintenance, and answer your questions before we leave.
You shouldn't be left staring at a new thermostat wondering what happens next.
Ready to move forward?
0% financing for 12 months on qualifying systems — View financing options →
Why Proper Heat Pump Installation Matters
The heat pump itself is only part of the equation. Even high-quality equipment needs to be installed and commissioned correctly to deliver the efficiency it was designed to.
Refrigerant charge, airflow, line-set installation, electrical connections, duct or air-handler connections, drainage, and thermostat setup all contribute to how your system performs. Cutting corners during installation can undermine the investment you just made.
Better Comfort. Lower Bills. Two Seasons Covered.
A properly selected and installed heat pump provides more consistent temperatures, quieter operation, and strong efficiency — heating in winter and cooling in summer without a second system to maintain.
It also gives you comfort you can count on in both seasons — and that matters when Pacific Northwest weather swings from cold, wet winters to warm summer stretches.
Need help with the upfront cost? Financing is available →
Why Homeowners Choose Coast HVAC
HVAC service should be simple. You should be able to call, get a clear explanation, understand your options, and feel confident about the work being done in your home.
FAQs
Available Across South King County
Based in Kent and serving every city around it — same pricing, same response, wherever you are.
Thinking About a Heat Pump? Let's See If It Makes Sense for Your Home.
Heat pumps aren't right for every situation. We'll evaluate your home, run the real numbers, size the system properly, and give you a free quote — no upsell.
