Same-Day Service
Most service calls handled same-day across Spokane and Coeur d'Alene.
Smart Home & Safety
The electrical that protects your family.
Hard-wired smoke and CO detectors save lives — replaceable battery units don’t always. Smart thermostats save 10–15% on heating and cooling. Smart-home wiring done up front is half the cost of retrofitting later. Whole-home power safety prevents the small electrical issues from becoming fires.
We install for both residential and commercial properties across Washington and Idaho. Code-compliant, integrated with whatever smart-home ecosystem you’ve chosen (Alexa, Google, Apple Home, SmartThings, Control4), and backed by a written warranty.
- Licensed in WA & ID Washington and Idaho licensed, bonded, and insured — residential and commercial.
- Stocked trucks Breakers, switches, outlets, wiring, and diagnostic gear on board for one-trip repairs.
- 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
Safety and smart-home triggers
Some of these are required by code. Others are preventive. All of them matter.
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Battery-only smoke detectors
Modern code requires interconnected hard-wired smoke and CO detectors throughout the home.
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Detectors over 10 years old
Smoke and CO detectors expire — even hard-wired units need replacement every 10 years.
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Outdated thermostat
Mechanical or non-programmable thermostats waste 10–15% on heating and cooling.
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New build or major remodel
The best time to add smart-home wiring is during construction — half the cost vs retrofit.
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Frequent power surges
Whole-home surge protection at the panel guards every device in the house.
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Selling the home
Inspections often flag missing or outdated CO detectors — fix before listing.
What We Install
Smart home and safety equipment
Equipment that actually works, integrated with your existing systems, installed to code.
- Power Safety Whole-home surge protection, AFCI/GFCI retrofits, panel safety inspections, and code-compliance upgrades.
- Smart Homes Smart switches, lighting scenes, smart locks, video doorbells, and integration with Alexa, Google, and Apple Home.
- Smart Thermostats Ecobee, Nest, Honeywell — installed and configured to your HVAC system, with C-wire added if needed.
- Smoke & Carbon Monoxide Detectors Hard-wired, interconnected smoke and CO detectors throughout the home — code-compliant in WA and ID.
- Doorbell cameras Hard-wired video doorbell installs with proper transformer sizing.
- Whole-home networking Hard-wired Cat6 runs for reliable smart-home and work-from-home networks.
- Smart switches & scenes Multi-room lighting scenes, motion automation, and scheduled lighting.
- Commercial smart systems Lighting controls, occupancy sensors, and HVAC integration for offices and retail.
How It Works
Our smart-home and safety process
Plan first, install second. We integrate, not just install.
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Call & schedule
Same-day or next-day appointments for most smart-home and safety calls.
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Walk-through
Tech reviews your existing smart-home ecosystem and plans a clean integration.
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Approve the price
Flat-rate quote in writing before any work begins.
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Install & verify
Equipment installed, configured, and tested. We don't leave until everything works.
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.
Smart thermostat or smoke detector upgrade? 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
★★★★★
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
Smart Home & Safety — Frequently Asked Questions
Are hard-wired smoke detectors required?
In Washington and Idaho new construction and significant remodels, yes. Existing homes are grandfathered with battery-only detectors, but interconnected hard-wired detectors are dramatically more reliable. We can add hard-wired detectors to any home.
How often should smoke and CO detectors be replaced?
Every 10 years for smoke detectors, every 5–7 years for CO detectors. The internal sensors degrade — even hard-wired units. If yours are over 10 years old, replace.
Will it work with my Alexa/Google/Apple Home?
Yes. We install equipment that integrates with Alexa, Google Home, Apple Home, SmartThings, Hubitat, Control4, and Crestron. Tell us your existing ecosystem and we’ll match it.
What's a C-wire?
The ‘common’ wire that powers smart thermostats. Most older homes don’t have one at the thermostat. We can add a C-wire run, install an adapter at the air handler, or recommend a smart thermostat that runs without one.
Do you handle commercial security and safety?
Yes. Commercial-grade smoke and CO systems, occupancy sensors, and smart lighting controls for offices, restaurants, and retail in both Washington and Idaho.
Is the work warrantied?
Every install includes a 1-year Mainstream labor warranty plus the manufacturer warranty on equipment (typically 2–10 years).
*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.
