Expert AC Installation

Clearance Sale - Up to $2500 Off Select HVAC Systems!

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Central A/C Installation

Your Trusted A/C Specialists

Struggling with Spokane’s summer heat? Mainstream delivers top-rated A/C installation, repair & maintenance for total home comfort. Trust our HVAC experts—call today!

SPECIAL OFFERS

Mainstream Savings & Offers

A/C Tune-up $79

Expires: 05/31/2026

$50 Off Any Service

Expires: 12/31/2026

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Mainstream Isn't Just AC Installation

Emergency HVAC

Instant peace of mind with our emergency HVAC services—because comfort can’t wait.

AC Maintenance

Extend the life of your system and improve efficiency with our comprehensive maintenance services.

Plumbing

Like most people, you might not think much about your plumbing – until something happens.

Drains & Sewers

Your drains are nearly invisible, but far from invincible. We’re here to help keep things flowing.

Electrical

Our electricians will help get the lights turned on in thousands of Spokane area homes.

Expert HVAC Installation

Frequently Asked Questions

How much does a furnace installation or replacement typically cost?

How Long Does AC Installation Take?

Most air conditioner installations can be completed in one day, though complex projects or system upgrades may take longer.

What Size Air Conditioner Do I Need For My Home?

An air conditioner that is too small for your home may struggle to keep up during hot weather, run constantly, and leave certain rooms feeling warmer than others. Signs of an improperly sized AC system can include uneven temperatures, poor airflow, hot spots, and reduced comfort throughout the house.

How much does smart thermostat installation cost?

Why should you install a smart thermostat?

When should you upgrade to a smart thermostat?

Are Ductless Mini Splits Worth It?

Ductless mini split systems are an efficient way to heat and cool homes without requiring traditional ductwork. Many homeowners use mini splits to improve comfort in rooms that stay too hot or too cold, while also gaining more control over temperatures in different areas of the home.