HVAC & air ducts · Redmond, WA
Furnace, AC and duct work for Redmond homes
Gas furnaces from the 1990s and 2000s are wearing out across Redmond. We repair or replace them, add cooling, and fix the attic ducts that keep upstairs rooms too hot or too cold.
- Furnace age, venting and filter access
- Attic duct joints, wrap and crushed flex runs
- Upstairs vs. main-floor temperature difference
HVAC & air ducts for Redmond homes · Seattle, WARedmond homes
HVAC & air ducts built around Redmond houses
A lot of Redmond's housing went up in the 1980s, 1990s and early 2000s, and the gas furnaces installed then are near or past the end of their service life. Many of these homes also have the upstairs ducts running through the attic. In summer that attic is the hottest place in the house, and in winter it's the coldest, so leaky or poorly insulated ducts make the bedrooms the least comfortable rooms. That's why the upstairs in a North Redmond or Bear Creek two-story is so often a few degrees off from the main floor, in both seasons. The furnace gets blamed, but the ducts are usually the bigger part of it.
When a furnace needs replacing, it's the right moment to look at the whole system. We check the furnace, venting and filter setup, and we go into the attic and crawl space to inspect the ducts: joints, wrap, crushed runs and rodent damage. Then we size new equipment to your home instead of just matching the old nameplate. Many owners add central AC or a heat pump at the same time, since the ducts are already there. For a bonus room or converted garage the main system never reached, a ductless mini-split is a cleaner fix than extending ducts. We lay out the options side by side with the inspection photos.
- Furnace age, venting and filter access
- Attic duct joints, wrap and crushed flex runs
- Upstairs vs. main-floor temperature difference
- Bonus rooms and garages off the main system
Local conditions
What Redmond throws at attics and crawl spaces
The houses
Redmond's housing climbs from the Sammamish River valley up onto the hills around it. Education Hill and Grass Lawn have 1960s and 1970s split-levels and ramblers, mostly on vented crawl spaces. Idylwood, near the north end of Lake Sammamish, mixes older lake homes with remodels. North Redmond and Bear Creek filled in through the 1980s, 1990s and 2000s with two-story homes on larger lots, many with crawl spaces, ducts running through the attic and roofs with several sections. Overlake and Downtown Redmond add townhomes and apartments. The older homes often still have their original ductwork and first-generation insulation.
The weather
The Sammamish River valley floor is flat, low and wet. Cold air settles there on clear winter nights, bringing fog and frost while the hillsides stay a little milder. Bear Creek and Evans Creek feed the valley, and the ground near them stays saturated through the October-to-May rain. Up on Education Hill and in North Redmond, tall second-growth firs shade roofs and drop needles that fill gutters.
The wildlife
Marymoor Park, the Sammamish River Trail, Bear Creek and the remaining farm fields in the Sammamish Valley give rodents plenty of habitat next to homes. Norway rats follow the river and creek banks and burrow under sheds and decks. Roof rats use wooded hillsides and fence lines to reach rooflines. Mice move indoors as fields are cut and nights get cold.
Typical results
What hvac & air ducts looks like
BeforeAfterHow it works
Same crew, same standard, in Redmond
- 01
Free inspection
- 02
A plain plan
- 03
Scheduled work, one crew
- 04
Start-up and walk-through
FAQ
HVAC & air ducts in Redmond: FAQ
Still unsure? Call (800) 674-4933 and talk it through with us.
Should I repair or replace my Redmond home's furnace?
It depends on the furnace's age, the repair cost and how well it heats your home. A newer furnace with a single failed part is usually worth repairing. An older unit with repeated breakdowns or uneven heating is often a better candidate for replacement. We give you both options and explain the reasoning.
Why is my upstairs so much hotter in summer?
Heat rises, and in many Redmond two-story homes the upstairs ducts run through a hot attic with thin insulation. Leaky ducts and low attic insulation add to it. Sealing and insulating the ducts, improving attic insulation, and adding cooling or a heat pump each help. We find which ones matter most in your home.
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Free hvac & air ducts inspection in Redmond.
Book a free inspection. We'll photograph your attic and crawl space and walk you through what we find, before you decide anything.