Same-Day Service
Most service calls handled same-day across Spokane and Coeur d'Alene.
Heating Services
Whole-home heating, done right the first time.
From a no-heat emergency at 2am to a planned furnace replacement before next winter, our heating team handles every step. We service every gas, electric, and dual-fuel system on the market — and we install only the brands we’d put in our own homes.
Every visit ends with a written report, a flat-rate quote on any recommended work, and a satisfaction guarantee in writing.
- 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.
When to Call
Heating problems we solve every day
Catching small problems before they become emergencies is the easiest money you can save on heating costs.
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No heat at all
Furnace won't fire, breaker keeps tripping, or the heat pump is blowing cold air on heat mode.
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Weak or uneven heat
Some rooms are toasty, others freezing — usually airflow, ductwork, or a failing blower motor.
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Loud or new noises
Banging on startup, rumbling, or whining means a part is wearing out and getting close to failure.
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Spiking gas or power bill
A jump in your bill almost always means your system is running longer or harder than it should.
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Short cycling
Turning on and off every few minutes wastes fuel, shortens equipment life, and signals a real problem.
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System over 12 years old
Older systems lose efficiency every year — replacement often pays back faster than another big repair.
What We Service
Every heating system in the Inland Northwest
Repair, installation, replacement, and maintenance — for every common heating system installed in Spokane and Coeur d'Alene homes.
- Furnace repair Same-day diagnosis on gas, electric, and high-efficiency furnaces.
- Furnace installation Right-sized replacement systems with manufacturer rebates handled.
- Furnace maintenance Annual tune-ups that catch failures before peak winter demand.
- Heat pump repair Defrost, refrigerant, reversing valves, and electrical control issues.
- Heat pump installation Cold-climate heat pumps that work down to single-digit temps.
- Boiler repair Hot-water and steam boilers — leaks, ignition, circulators, expansion tanks.
- Thermostat upgrades Smart thermostats wired to your existing system — install + setup included.
- Emergency heat repair Priority dispatch 24/7 — no extra charge for nights, weekends, or holidays.
How It Works
A heating service call from start to finish
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 a time window and text a photo of your tech.
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Diagnose
Full-system inspection — burners, blower, ignition, ductwork, controls — with a written report.
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Approve the price
You see a flat-rate quote before any work begins. 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.
Current Specials
Save on the work your home needs most.
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.
Cold house? We can help.
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
★★★★★
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
Heating — Frequently Asked Questions
How fast can someone get to my house when the heat is out?
For no-heat calls in Spokane, Coeur d’Alene, and the surrounding region we offer same-day appointments and 24/7 emergency dispatch — including weekends and holidays. We don’t charge extra for after-hours calls.
Do you service my brand?
Yes. We repair every major residential brand including Carrier, Trane, Lennox, Rheem, Goodman, York, American Standard, Bryant, Amana, Daikin, and Mitsubishi — plus most boilers, mini-splits, and heat pumps installed in the Inland Northwest.
Should I repair or replace?
If your system is more than 12 years old and you’re facing a major repair, replacement usually pays back faster in efficiency savings and reliability. We’ll give you the honest tradeoffs — including a free second opinion if another company has quoted you a replacement.
Are repairs and installs warrantied?
Every repair includes a 1-year Mainstream labor warranty plus the full manufacturer parts warranty. New installations get a 10-year parts warranty and a 2-year labor warranty when you join our Care Club.
Do you offer financing?
Yes. We offer flexible financing — including no-interest plans for qualified customers — so a heating emergency or planned upgrade doesn’t have to wait. Our team walks you through the options during the visit.
*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.
