Same-Day Service
Most service calls handled same-day across Spokane and Coeur d'Alene.
Furnace Repair
When the heat goes out, we get it back fast.
From a furnace that won’t ignite to one that runs nonstop without warming the house, our NATE-certified technicians diagnose every gas, electric, and high-efficiency furnace on the market. We arrive in fully-stocked trucks so most repairs are completed in a single visit — no second trips, no chasing parts.
Every repair is backed by a written warranty on parts and labor, and you’ll see the price before we touch a tool.
- All major brands Carrier, Trane, Lennox, Rheem, Goodman, York & more.
- Stocked trucks Igniters, blowers, gas valves & control boards on board.
- Flat-rate quotes Approved before any work — never charged by the hour.
- Warrantied work 1-year labor warranty plus full manufacturer parts coverage.
Limited Time Offer
Any HVAC or Plumbing Service
Schedule Your Service Call Today
- Certified Technicians
- Quick Repairs
- Emergency Service
- Quality Service
Symptom Check
Signs your furnace needs a repair
Catching the small problems early is almost always cheaper than a full replacement. If you notice any of these, give us a call.
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Cold air from the vents
Could be a failed igniter, a tripped limit switch, or a thermostat issue — all worth a same-day check.
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Weak airflow
Often a clogged filter or failing blower motor. Easy fix early — a bigger bill if it's ignored.
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Loud or unusual noises
Booming on startup, rumbling burners, or a screeching blower all signal worn parts about to fail.
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Yellow or flickering flame
Burner flames should be steady and blue. Yellow flames can mean incomplete combustion — and CO risk.
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Short cycling
Turning on and off every few minutes wastes fuel, stresses parts, and points to a real problem.
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Spiking gas bills
A sudden jump in your gas bill almost always means your furnace is working harder than it should.
What We Repair
Every common furnace issue — in one trip.
Our trucks are stocked for the repairs that account for 90% of furnace service calls in the Inland Northwest.
- Igniters & flame sensors Hot-surface and direct-spark igniter replacement — most common winter failure.
- Blower motors ECM and PSC motor replacement, capacitors, bearings & belts.
- Control boards Diagnose and replace the brain of your furnace when error codes start appearing.
- Gas valves & pressure Safe gas valve testing, replacement, and combustion-pressure adjustment.
- Thermostat issues Wiring, calibration, and smart thermostat installs.
- Condensate drains Clear blocked condensate lines and replace failed condensate pumps.
- Electrical & safety Limit switches, transformers, breakers, and safety lockouts.
- Heat exchanger inspection Camera-based inspection for cracks — critical for carbon-monoxide safety.
How It Works
Our 4-step furnace repair process
No mystery, no pressure. Here's exactly what to expect when you call.
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Call & schedule
Speak to a real dispatcher 24/7. We confirm your time window and send you a photo of your tech.
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Diagnose
Full-system inspection — ignition, gas, blower, controls, ductwork — for one flat $89 diagnostic fee.
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Approve the price
You see the flat-rate quote before we begin. The diagnostic fee is applied to the repair.
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Fix & guarantee
Most repairs done same-day. Backed by a written 1-year labor warranty and parts coverage.
Why Choose Mainstream
Upfront Pricing
Flat-rate pricing approved before work begins — no surprises on the invoice.
Licensed & Insured
Fully licensed in Washington and Idaho, bonded, and insured for your protection.
Satisfaction Guaranteed
If it isn't right, we make it right. Period.
Ready to get warm air back?
Same-day service across Spokane & Coeur d'Alene — flat-rate pricing, no surprises.
What Our Customers Say
Don't just take our word for it — hear from our satisfied customers
★★★★★
Ricky Saldana the technician that came out was fantastic. He was so knowledgeable about my plumbing issues and his recommendations were spot on. He was on time and very pleasant to work with. I would highly recommend him for any plumbing work that needs to be done.
Thanks Ricky for all of your input.
★★★★★
Jake was on time and very good about looking at my furnace. I appreciate all his help. I reccomend him and mainstream electric very highly. thank you Sharon Scott
Maintenance Membership
Join the Care Club
Total home service care, on a schedule.
Members get priority scheduling, seasonal HVAC tune-ups, an annual plumbing & electrical safety inspection, and exclusive discounts — for less than the cost of a single emergency call.
- Priority scheduling
- Seasonal HVAC tune-ups
- Annual safety inspection
- Exclusive member discounts
- Free dispatch on repairs
- No long-term contracts
Frequently Asked Questions
How quickly can someone get to my house?
For most service requests in Spokane, Coeur d’Alene, and surrounding areas, we offer same-day appointments. No-heat emergencies get priority dispatch 24/7 — including weekends and holidays.
Will I know what the repair costs before you start?
Always. Our technician completes a full diagnosis, then walks you through the recommended repair and a written, flat-rate quote — and we don’t lift a wrench until you approve it. No hourly billing, no surprise add-ons.
Is my furnace safe to keep running?
If you smell gas, see soot, or your CO detector is going off, shut the system down and call us immediately — those are emergency calls. Yellow flames or unusual booming sounds are also reasons to schedule a same-day inspection.
Do you service every furnace brand?
Yes. We repair every major residential brand including Carrier, Trane, Lennox, Rheem, Goodman, York, American Standard, Bryant, and Amana. Our trucks carry universal parts that fit the vast majority of installed systems in the Inland Northwest.
Should I repair or replace my furnace?
A good rule of thumb: if your furnace is more than 12 years old and you’re facing a major repair (heat exchanger, control board, blower motor), replacement often pays back faster in efficiency savings and reliability. We’ll give you the honest tradeoffs.
Is the repair warrantied?
Every repair includes a 1-year labor warranty from Mainstream, plus the full manufacturer parts warranty (typically 1–10 years depending on part). Care Club members get an extended 2-year labor warranty.
*Offers cannot be combined with other promotions or applied to dispatch fees. No cash value. Must present offer at time of service. Call for details.
