Service · Same-day furnace repair in Seattle

Same-day furnace repair in Seattle.

Furnace repair in Seattle typically costs $250 to $850 for common issues like a failed ignitor, dirty flame sensor, or clogged condensate drain. Major repairs (blower motor, control board, heat exchanger) run $800 to $2,200. We diagnose in 20 to 30 minutes for a $129 flat diagnostic fee, applied to the repair if you go ahead with us. We hold same-day diagnostic capacity across King, Pierce, and Snohomish counties.

Call (206) 200-9134 → Get a free quote

// SAME-DAY DIAGNOSTIC $129 FLAT · CREDITED TO REPAIR

Diagnostic fee $129 flat

Credited to repair Over $400

Response Same day

Hours 7 AM – 8 PM · 7 days

Labor warranty 1 yr on repairs

What drives the cost

Diagnostic time, parts, labor complexity, repair-vs-replace.

01
Diagnostic time

$129 flat to identify the failure. Credited to repair work over $400.
02
Part availability

OEM Carrier/Lennox parts stocked. Goodman/older units take 1-3 days.
03
Labor complexity

Flame sensor swap is 30 min. Heat exchanger is 6+ hours.
04
Repair vs replace

If repair > 50% of replacement on a 15+ yr furnace, replacement usually wins.

What a real diagnostic looks like

A real furnace diagnosticis 20 to 30 minutes, $129 flat, credited to the repair.

We diagnose in 20 to 30 minutes on most calls. The technician runs the furnace through its full sequence, checks combustion CO levels, inspects the heat exchanger, and identifies the failure. You get a written quote for the repair before any work starts.

$129 flat diagnostic. Applied to your invoice if the repair runs over $400. We don't pad the diagnostic fee or charge "trip plus diagnostic plus inspection." One number, one visit, one technician.

If the repair pencils worse than replacement on a 15+ year-old furnace, we tell you straight. We'll quote both: the repair AND the replacement (with heat pump alternative). Your call which way to go.

Get your same-day furnace repair quote in 24 to 48 hours.

Free on-site evaluation. Master electrician on every consult. No high-pressure sales. We answer Mon-Sun, 7 AM to 8 PM.

Request a quote → Call (206) 200-9134

What you pay

Furnace repair costs in Seattle (no hidden tricks).

Diagnostic is $129 flat. Repair costs depend on the part and labor time. Here are the most common repair categories with real ranges we quote in 2026.

✓Diagnostic credited to repair✓OEM parts only✓1-yr labor warranty

Get a real quote → Call (206) 200-9134

Issue

Typical part cost

Dirty flame sensor Most common no-heat call

Clean only

Failed hot-surface ignitor No flame, clicking sound

$45–$120

Clogged condensate drain Water leak under furnace

$0 (DIY-friendly)

Blower motor replacement No airflow, motor hum

$280–$650

Control board replacement Intermittent or no power

$220–$540

Heat exchanger replacement Cracked exchanger, CO concern

$1,400–$2,800

If your furnace is 15+ years old and the repair quote approaches 50% of replacement, we quote the replacement too. See furnace replacement options or heat pump alternative.

From first call to final walkthrough

How a same-day furnace repair with us goes.

Our process is built around making decisions easy, not pressuring you to make them today. Here's what every Black Lotus install looks like.

See the full process →

01

Day 0Schedule.

You call. We answer. A technician is introduced by name and a two-hour window is confirmed.
02

Day 1Consult.

On-site evaluation, Manual J load calc where applicable, panel + ductwork check, install photos. Written estimate in 24 to 48 hours.
03

Day 2-4Approve.

You pick your option. We pull permits, register warranties, lock in your install date and PSE rebate paperwork.
04

Day 5-7Install.

Full walkthrough before we touch a wire. Combustion analysis if any gas equipment remains, startup, full system test.
05

AfterSatisfied.

Walkthrough at the end. Anything you flag, we fix. Final payment only after sign-off. Warranty starts now.

Equipment lines we install

Parts and brands we service.

OEM parts: Carrier · Lennox · Trane

Stocked

Most repairs Same-day

We stock flame sensors, igniters, blower capacitors, and condensate pumps for the major Carrier and Lennox models from the last 20 years. Most repairs complete same-day.

Stocked parts 40+ SKUs

Common repairs Same-day

Warranty 1 yr labor

Goodman / Amana / Ducane

Order-in

Lead time 1-3 days

Mid-market brands. Most parts arrive in 1 to 3 business days from our distributors. We hold the diagnostic fee and finish the repair when parts land.

Lead time 1-3 days

Warranty 1 yr labor

Diagnostic credit Applied

Older 30+ yr units

Repair vs replace

Assessment TBD

For 25+ year old furnaces we run the repair-vs-replace math during the diagnostic. If repair > 50% of replacement, replacement usually wins.

Cutoff 50% of new

Includes Replacement quote

HP alternative Modeled

Why homeowners pick us

Three operational choices that change how the install lands.

Real Manual J load calculations.

We don't quote from square footage. Every system is sized from a measured load calculation accounting for insulation, windows, orientation, and air sealing. Oversized equipment is the most common failure mode we see on competitor installs.

In-house electrical.

HVAC and electrical under one roof. No subcontractor coordination, no second permit, no surprise add-ons after the gas guy leaves. If your panel needs work, we do it with the same crew on the same week.

Final payment after walkthrough.

You sign off after we walk the install with you. Anything you flag, we fix. Your money clears only after you say it's right. That clause is in writing on every install.

Black Lotus might not currently have the marketing chops of the bigger outfits, it's worth giving them a meeting. We're glad we did. They charged us 1/2 of other bids I had gotten.

Anna Chen · Local Guide · 132 reviews · Verified Google review

Common scenarios

Common furnace problems we see in Seattle.

No heat, blower runs forever.

About 40% of our diagnostic calls. Usually a dirty flame sensor or failed ignitor. Repair runs $180 to $450, same-day.

Short-cycling or weak airflow.

Usually a clogged filter, dirty blower, or oversized equipment. Filter replace + tune-up fixes most of it. $129 diagnostic, $200 to $400 if parts.

Gas smell or CO concern.

Stop using the furnace. Call PSE first for a gas leak. We run full combustion analysis and inspect the heat exchanger for cracks.

Schedule annual maintenance →

Common questions before you call

Quick answers before you call.

01 /

How fast can you get a tech to my furnace?

Same day during business hours (7 AM to 8 PM, 7 days), typically within 2 to 4 hours of your call. 4 to 8 hours on weekends and evenings.

02 /

Is the $129 diagnostic fee credited toward the repair?

Yes, when the repair runs over $400. The fee is for the technician's time and is one flat number — no add-on trip charge, no add-on inspection fee.

03 /

Do you stock parts for old furnaces?

Common parts for Carrier, Lennox, and Trane (the major brands) are stocked on every truck. Goodman, Amana, and Ducane usually take 1 to 3 days from our distributors.

04 /

Will you push me to replace the furnace?

No. We quote both options when repair-vs-replace math is close (15+ yr old furnaces with $600+ repairs). You decide.

05 /

What if you can't fix it the same day?

If we need to order parts, we hold the diagnostic fee and finish the repair when parts arrive (1 to 3 business days). We do NOT charge a second diagnostic for the return visit.

06 /

Do you offer financing on repairs?

Larger repairs ($1,500+) qualify for 0% APR financing for 12 months. Smaller repairs we don't financing-burden you — pay at completion.

Schedule your consult

Free on-site evaluation. Written quote in 24 to 48 hours.

Same-day diagnostic for furnace, AC, or electrical service calls within our primary area. King, Pierce, and Snohomish counties.

Call (206) 200-9134 → Schedule online

Hours Mon-Sun · 7 AM – 8 PM

Service area King · Pierce · Snohomish

Email blacklotushvac@icloud.com

Three Seattle-born partners. 30+ years combined HVAC experience. Master electrician on every consult. PSE Trade Ally with the $1,200 rebate priced into your quote.