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?

Proper AC sizing depends on square footage, insulation, ductwork, and home layout. A licensed professional performs load calculations to ensure the system is neither oversized nor undersized.

How much does smart thermostat installation cost?

Why should you install a smart thermostat?

When should you upgrade to a smart thermostat?

Are Mini Splits Better Than Central Air Conditioning?

Mini splits can be better than central air conditioning in homes where ductwork is limited, inefficient, or not present. They offer room-by-room temperature control and often operate more efficiently by avoiding duct losses. Central systems may still be effective in homes with well-designed ductwork and consistent layout. The better option depends on the home’s structure, comfort needs, and existing system condition.