Furnace installation · Cottage Lake, WA
Furnace Installation in Cottage Lake, WA
Cottage Lake HVAC provides furnace installation and replacement in Cottage Lake, WA and nearby Woodinville, Redmond and Duvall: high-efficiency gas and propane furnaces, sized to the house, with the King County or city mechanical permit handled for you.
- Load-based sizing, not a rule of thumb
- Gas and propane, including dual-fuel with a heat pump
- Permits and inspection handled
Signs It's Time to Replace
- The furnace is 15 to 20+ years old and needs a major repair
- Repair bills every heating season
- Rooms that never get warm
- Rising gas or propane bills with no change in use
- A cracked heat exchanger found during service
Permits in Unincorporated King County
In unincorporated King County, installing, replacing or relocating a furnace or air conditioner needs a residential mechanical permit, applied for through MyBuildingPermit.com. Homes inside Woodinville, Redmond or Bothell city limits go through that city instead.
A permitted install gets inspected, which protects you and leaves a record for insurance and resale.
Furnace or Heat Pump?
If your home has gas, a new high-efficiency furnace is a straightforward replacement. Many Eastside homeowners are also pricing a heat pump, or a dual-fuel setup that pairs a heat pump with a gas furnace for the coldest nights. An estimate can cover both.
What Changes the Price of a New Furnace
Every install is quoted after a site visit. What moves the price: furnace size and efficiency, ductwork changes, venting, gas or propane line work, access, and the permit. Request a free estimate using the form on this page for a free estimate.
Furnace Installation Questions
How long does a furnace replacement take?
Most straight replacements take a day. Changes to ducts, venting or fuel lines can add time.
What size furnace do I need?
It should be based on a load calculation for your house, not the size of the old furnace. Oversized furnaces short cycle and wear out sooner.
Is there a rebate for a new furnace?
Puget Sound Energy offers rebates on some heating equipment. Check PSE's current programs or ask during your estimate.
Do you install propane furnaces?
Yes, for homes without natural gas service.
Other HVAC Services in Cottage Lake
Furnace Repair
No heat, short cycling, strange noises, or a furnace that won't ignite. Gas, propane and electric.
Heat Pump Repair
Heat pumps blowing cold, icing over, or running nonstop through a cold snap.
Heat Pump Installation
Cold-climate heat pumps that heat all winter and cool in summer.
Ductless Mini-Splits
Heating and cooling for homes without ducts, additions, shops and bonus rooms.
Air Conditioning Repair
Central AC that won't cool, freezes up, or trips the breaker on hot days.
Air Conditioning Installation
Adding central air to an existing furnace, or replacing an old AC unit.
HVAC Maintenance
Fall furnace and heat pump tune-ups and spring AC checks.
Ductwork & Air Quality
Duct repair and sealing, better filtration for wildfire smoke, and ventilation.
