Ductwork Installation in Normandy Park, WA
Custom sheet metal ductwork fabricated and installed serving Marine View Estates, Normandy Park Cove, Manhattan Village, and all of Normandy Park. No subcontractors, all permits pulled, built to exceed WA code. Served by Puget Sound Energy or Seattle City Light depending on the address — we confirm which before quoting a rebate.
Your Normandy Park Ductwork Specialists
Normandy Park homeowners in Marine View Estates, Normandy Park Cove, and Manhattan Village often discover that ductwork is the silent culprit behind comfort and efficiency problems. Many homes in Normandy Park were built when furnaces were oversized, fuel was cheap, and ductwork was sized for low static pressure. Modern high-efficiency equipment — variable-speed furnaces, two-stage ACs, heat pumps — needs properly sized ducts and tight seals to deliver rated performance. Original ductwork in older Normandy Park homes is often undersized, leaky at every joint, and missing insulation in unconditioned spaces.
Large mature lots and a saltwater bluff give Normandy Park real flexibility on condenser placement — and a real need for corrosion-rated equipment when the unit faces the water. Because the boundary runs through Normandy Park rather than around it, the first thing we do is read your power bill — quoting a rebate you cannot claim is not a favour.
Normandy Park is not listed in the state energy code's design-temperature table, so the nearest station — Seattle: Sea-Tac AP, at 24°F — is the starting point (WAC 51-11C-80100, Table C-1). That is the number a Manual J load calculation for your home is run against, and it is the difference between duct runs sized for the real load and duct runs sized for a guess. Natural gas here comes from Puget Sound Energy. In Normandy Park we most often find gas forced air and hydronic in the mid-century ramblers, original oil systems in a handful of untouched 1950s homes, and electric zonal heat in additions — so we quote what your house actually has, not what the average Puget Sound home has.
Ductwork Services for Normandy Park Homes
Why Normandy Park Homeowners Choose Us
Fast Response
Based in Federal Way, we reach Normandy Park quickly for ductwork inspections and estimates. Most ductwork projects are scheduled within a week of approval.
Know Local Codes
The mechanical permit for your duct system is issued by the City of Normandy Park Community Development Department. We pull it, pay the fee, book the inspection and meet the inspector on site.
Understand Local Homes
In Normandy Park we usually find gas forced air and hydronic in the mid-century ramblers, original oil systems in a handful of untouched 1950s homes, and electric zonal heat in additions. We size to your house at the 24°F design temperature the state energy code sets for this area — not to a rule of thumb. Near the Puget Sound shoreline and Marine View bluff we specify corrosion-rated coils.
Ductwork Challenges for Normandy Park Homes
Who bills you for power decides what you can claim. Normandy Park is served by Puget Sound Energy or Seattle City Light depending on the address. PSE's current heat pump incentive is if PSE is the name on your power bill, up to $4,400 toward a qualifying heat pump replacing an existing electric or fossil-fuel system — the exact amount depends on what you are replacing and the equipment you install. Normandy Park is split between the two utilities and their programs do not match — we verify from your bill, then handle the paperwork for whichever applies. Both programs pay only through their own approved installer lists — PSE has required a Trade Ally or Registered Energy Professional since April 2, 2026 — so the utility on your bill decides both the amount and who is allowed to earn it for you.
Normandy Park does not share Seattle's weather, and the code says so. Normandy Park is not listed in the state energy code's design-temperature table, so the nearest station — Seattle: Sea-Tac AP, at 24°F — is the starting point (WAC 51-11C-80100, Table C-1). That is the number a Manual J load calculation for your home is run against, and it is the difference between duct runs sized for the real load and duct runs sized for a guess. Normandy Park shares that number with the towns immediately around it, but it sits 7 degrees off the 17°F end of our service area down in Thurston County — which is why we size off your address rather than a regional average.
What we expect to find in a Normandy Park home. The local stock runs to mid-century ramblers on large lots from the 1950s-1970s, waterfront estates, and newer custom builds with Puget Sound views. That usually means gas forced air and hydronic in the mid-century ramblers, original oil systems in a handful of untouched 1950s homes, and electric zonal heat in additions. Gas service here comes from Puget Sound Energy. Whether reworking a duct system is the right answer for your house is something we tell you after we look at it, not before.
The parts of the job that are specific to this address. In Normandy Park, the mechanical permit is issued by the City of Normandy Park Community Development Department, and we pull it, pay it and meet the inspector; homes near the Puget Sound shoreline and Marine View bluff get corrosion-rated coil coatings and a twice-yearly coil rinse instead of annual service — salt air is what kills condensers early on this shoreline; burn bans and wildfire-smoke advisories here are called by Puget Sound Clean Air Agency, which is the season that makes filtration worth specifying properly.
Quick Facts
Local details that change a duct system job in Normandy Park
Normandy Park is split between two power utilities running two different rebate programs, so half the table below depends on your address rather than your city. We check the bill before we quote.
- Electric utility
- Puget Sound Energy or Seattle City Light depending on the address (check your bill — the boundary runs through town)
- Natural gas
- Puget Sound Energy
- Winter design temp
- 24°F (nearest listed station: Seattle: Sea-Tac AP) WSEC Table C-1, WAC 51-11C-80100
- Mechanical permit
- City of Normandy Park Community Development Department
- Rebate program that applies
- PSE or Seattle City Light
- Burn bans & smoke advisories
- Puget Sound Clean Air Agency
- Heat we usually find
- gas forced air and hydronic in the mid-century ramblers, original oil systems in a handful of untouched 1950s homes, and electric zonal heat in additions
- Salt-air exposure
- the Puget Sound shoreline and Marine View bluff — corrosion-rated equipment recommended
“Very impressed with the work they did. No high pressure to buy a new unit. Appreciated their honesty about repair costs.”
— Gayle N., Federal Way, WA
Ductwork Questions from Normandy Park Homeowners
Ductwork projects in Normandy Park typically range from $3,450 to $9,200, depending on scope. A partial replacement of a few crushed or leaking runs is at the lower end. A complete custom-fabricated duct system for a 2,000-3,000 sq ft home with all-new trunk lines, mastic sealing, and R-8 insulation is at the higher end. We provide free in-home assessments with written, itemized estimates.
Yes. The mechanical permit is issued by the City of Normandy Park Community Development Department, and Washington State requires one for this work. We handle the whole thing — application, fee, and meeting the inspector for the final — so you never contact the permit desk yourself. Every install meets or exceeds the current Washington State mechanical and energy codes.
Most ductwork projects in Normandy Park take 1-3 days. A targeted replacement of a few problem runs is often a one-day job. A complete duct system replacement paired with a new furnace or heat pump install runs 2-3 days, including commissioning and balancing. We schedule to minimize disruption and always leave your home clean.
Almost always, the cause is ductwork: undersized supply, missing or unbalanced damper, kinked flex duct, leaky takeoff, or no return air path. We diagnose the actual cause with manometer readings and airflow measurements — not guesses — and propose the smallest fix that actually solves the problem.
We fabricate our own galvanized sheet metal trunk lines, plenums, and transition fittings. We use rigid metal supply runs wherever possible and limit flex duct to short, properly supported connections at registers. All joints are sealed with mastic (not tape). All ducts in unconditioned space (attics, crawl spaces) are insulated to R-8 minimum. No subcontractors and no shortcut materials.
Often, yes — at minimum, you should have it inspected. A new high-efficiency furnace or variable-speed heat pump can lose 20-30% of its rated performance through leaky, undersized, or improperly sealed ductwork. If your existing ducts are 25+ years old, leaking visibly, or were sized for a smaller previous unit, it's almost always worth replacing or modifying them as part of the equipment install.
Normandy Park is not listed in the state energy code's design-temperature table, so the nearest station — Seattle: Sea-Tac AP, at 24°F — is the starting point (WAC 51-11C-80100, Table C-1). That is the number a Manual J load calculation for your home is run against, and it is the difference between duct runs sized for the real load and duct runs sized for a guess. A cold-climate heat pump holds its rated capacity well below that, which is why heat pumps genuinely work here rather than being a compromise. Gas here comes from Puget Sound Energy, and for some homes a hybrid — heat pump for most of the year, gas furnace for the coldest mornings — is the right answer. We will tell you if it is.
Ductwork Near Normandy Park
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Honest pricing on ductwork installation, replacement, and modification — fabricated by our own sheet metal crew.