Furnace is 15 years or older and repair calls are becoming frequent
Heating · Redmond, WA
Furnace Replacement in Redmond, WA
Most furnace replacements in Redmond run $4,800–$9,800 installed, depending on furnace size, ductwork condition, and venting changes. SPS Pro Services handles Redmond homes from Education Hill to Redmond Ridge, with most installs completed in a single day once the permit is in hand.
Typical cost$4,800–$9,800
WarrantyWorkmanship warranty
AvailabilitySame-week visits
HoursMon–Fri 8am–6pm
Redmond requires a mechanical permit for any furnace replacement, and Washington State L&I rules mandate that gas and electrical connections be done by licensed, bonded contractors. We pull the City of Redmond permit before work starts, size the furnace to your home's actual heat loss rather than swapping in a same-size unit, and schedule the required inspection so the paperwork is closed out, not left hanging over a future home sale.
Local knowledge
What's different about furnace replacement in Redmond
Local housing stock and utilities in Redmond change what this work involves.
Education Hill and older Redmond neighborhoods still have furnaces from the 1970s-80s original construction, often undersized for additions or finished basements added since — a load calculation catches this before install day.
Redmond Ridge and Bear Creek homes built in the 2000s often have furnaces in tight attic or crawlspace closets, which affects which cabinet sizes and venting configurations actually fit.
PSE serves gas and electric in Redmond, and rebate paperwork for qualifying high-efficiency furnaces has to reference PSE's current program terms, which we confirm before you sign off on a model.
Symptoms we see daily
Signs you need furnace replacement in Redmond
Uneven heating between rooms or a thermostat that won't hold temperature
Energy bills climbing with no change in how the home is used
Pilot light burns yellow instead of blue, or you notice odd smells when it runs
Banging, rattling, or grinding noises when the furnace starts up
No surprises
How a Redmond furnace replacement visit works
1
Home visit and load calculation
We inspect your existing furnace, ductwork, and venting, then run a Manual J-style heat loss calculation so the replacement is sized correctly instead of guessed at.
2
Permit filing
We file the mechanical permit with the City of Redmond before any equipment is removed, which is required under WA L&I code for gas furnace work.
3
Old unit removal and prep
We disconnect and remove the old furnace, inspect the flue and gas line for reuse or replacement, and protect flooring and walkways during the swap.
4
New furnace install and connections
We set the new furnace, connect gas, electrical, and ductwork per manufacturer specs and current code, then test for gas leaks and proper airflow.
5
Inspection and walkthrough
We schedule the city inspection, walk you through thermostat settings and filter location, and leave you with the permit closeout paperwork for your records.
Flat-rate pricing
Furnace Replacement in Redmond — what it costs
Conservative ranges for the Seattle metro. Your written quote is exact before work begins.
| Job | Typical price |
|---|---|
| In-home estimateExact flat quote for your home | Free |
| Standard furnace replacementTypical single-system job | $4,800–$6,470 |
| Mid-range furnace replacementHigher-capacity or multi-zone equipment | $6,470–$8,130 |
| Complex furnace replacementPremium equipment or difficult access | $8,130–$9,800 |
Prices reviewed by Sergei Petrov · July 2026. Parts availability can shift ranges — the quote you sign is final.
24/7 Emergency Line
Emergency dispatchNo heat at 11pm? We pick up.
Office hours are Mon–Fri, but the emergency line never closes. Call any hour and we dispatch a licensed tech across Greater Seattle.
Straight answers
Furnace Replacement in Redmond — FAQ
Do I need a permit to replace a furnace in Redmond?
Yes. The City of Redmond requires a mechanical permit for furnace replacement, and Washington State L&I requires the gas and electrical connections be done by a licensed contractor. We pull the permit and schedule the inspection as part of every job, so you're not left with unpermitted work if you sell the home later.
How long does a furnace replacement take in Redmond?
Most single-family homes in Redmond, including older Education Hill houses and newer Redmond Ridge construction, are done in one day. If ductwork needs modification or the flue needs updating to meet current code, plan on an extra half day.
What size furnace do I need for my Redmond home?
It depends on square footage, insulation, and window exposure, not just the size of your old unit. We run a load calculation on site rather than matching your existing furnace's rating, since many older Redmond homes were originally installed with oversized units.
Are there rebates available for a new furnace in Redmond?
PSE offers rebates on qualifying high-efficiency gas furnaces for customers in its service territory, which includes Redmond. Rebate amounts and eligible models change, so we confirm current program terms with you before you choose a furnace so the paperwork matches what PSE requires.
Founder & Lead HVAC Technician, SPS Pro Services
EPA Section 608 UniversalNATE Core Certified14+ years in the trade
Reviews the pricing and service guidance on this page against SPS Pro Services's actual job records in Redmond and across the Seattle metro.
Prices reviewed July 2026
Also in Redmond
Other services our crew handles on the same routes.
Need furnace replacement in Redmond?
Call (206) 427-8907 to schedule a furnace replacement estimate for your Redmond home, Monday through Friday, 8am to 6pm.