Cloud 9 Heat & Air was awarded the 2025 Mitsubishi Diamond Contractor of the Year!

AC Installation for Seattle Homes

Our professional AC installation services ensure your home or business stays cool and comfortable. We install high-quality air conditioning systems with precision, helping improve energy efficiency and long-term performance.

Certified and Backed by Leading HVAC Brands

Trusted Air Conditioning Contractor in Seattle

When it’s time to install a new air conditioning system, you deserve a service provider who delivers dependable results and long-lasting comfort. Our certified HVAC technicians specialize in air conditioner installation for all major brands and cooling systems, including central air, heat pumps, and ductless mini-splits.

Whether you’re replacing an old AC unit or installing a cooling system for the first time, we handle everything system sizing, installation, configuration, and performance testing to ensure your home stays comfortable even during the warmest Seattle summers.

We prioritize:

  • Energy-efficient cooling solutions

  • Quiet and consistent airflow

  • Lower monthly energy costs

  • System reliability and long-term performance

From single-family homes to apartments and townhomes, we tailor every AC installation to match your space and comfort needs. Our team is known for honest pricing, clean workmanship, and customer-focused service.

Free Consultations

AC Installation

Our central AC installation services in Seattle ensure balanced cooling throughout your home. We evaluate your home size, insulation, and airflow needs to recommend and install the right AC system for powerful, quiet, and efficient cooling.

  • Central Air Installation

  • Heat Pump AC Installation

  • High-Efficiency Cooling System Upgrades

AC Replacement Services

If your current AC system is old, noisy, or inefficient, we offer AC replacement services that improve comfort and reduce operating costs. We install high-efficiency ENERGY STAR® rated cooling units that help lower energy bills while maintaining ideal indoor temperatures.

Signs you may need AC replacement:

  • Rising energy bills

  • Uneven cooling in rooms

  • Frequent repairs

  • AC unit older than 12–15 years

Mini-Split AC Installation and Replacement

For homes without ductwork or for room-specific temperature control, our ductless mini-split installation services are a perfect solution. These systems are quiet, energy-efficient, and allow each room to be cooled independently.

  • Ideal for older homes, studios, basements, and additions

  • Flexible placement options

  • Lower energy consumption compared to central AC

  • Quick installation with minimal disruption

Residential AC Installation

We specialize in residential AC installation, ensuring your home stays cool, comfortable, and efficient. Every installation is done by certified professionals using top-quality materials and equipment.

AC Replacement Services

When repairs are no longer cost-effective, our AC replacement services provide a seamless upgrade to a modern system. Enjoy improved cooling power and lower operating costs.

AC Installation Rebates & Financing

Make your investment more affordable with available AC installation rebates and financing options. Our team helps you find local energy programs to save on upfront costs.

Why Choose Us

Trusted experts delivering reliable heating & cooling solutions for comfort in every season.

Licensed & Certified Technicians

Every install is handled by EPA-certified technicians who size your system with a proper load calculation and follow code to the letter — the same workmanship that earned us Mitsubishi's 2025 Diamond Contractor award.

Affordable & Transparent Pricing

You get a clear, upfront quote before any work begins, with no surprise charges once the job's underway. We'll also help you tap into local rebates and financing to bring the cost down.

Customer Satisfaction Guarantee

We're not done until your new AC is performance-tested, running quietly, and keeping you cool through Seattle's warmest days. Every installation is backed by manufacturer warranties plus our own service guarantee.

Testimonials

Honest reviews from our clients who have used our services

Frequently Asked Questions

Do I need central AC or would a ductless system work better for my home?

It depends on your home’s layout. If you already have ductwork, central AC is usually the more cost effective route. Homes without ducts, or additions and ADUs, tend to do better with ductless mini splits. We’ll walk through your space during the consultation and recommend what actually fits, not just what’s easiest to sell.

Seattle summers have been trending warmer in recent years, with stretches well into the 80s and 90s becoming more common. A lot of older homes here were never built with cooling in mind, which is why more homeowners are installing AC now instead of waiting for the next heat wave.

Most central AC installs take one to two days. Ductless systems are often quicker since there’s no ductwork involved. We’ll confirm the exact timeline once we’ve seen your home.

A properly sized, modern system runs more efficiently than an old or oversized unit. Oversizing is a common mistake that leads to short cycling and higher bills, so we size every install to match your home instead of guessing.

Yes. Cloud9 Heat & Air was named the 2025 Mitsubishi Diamond Contractor of the Year, Mitsubishi’s highest dealer certification. That means our team gets direct factory training on the AC and ductless systems we install most, plus access to extended manufacturer warranties.

Diamond Rated status with Mitsubishi Electric and an American Standard partnership aren’t credentials every Seattle contractor holds. It means the AC systems we install come with factory-backed training behind them, not just a crew figuring it out on-site.

Delivering trusted HVAC solutions across Seattle and the surrounding communities.

At Cloud9 HVAC, we’re proud to bring reliable heating, cooling, and air quality services to homeowners throughout the Greater Seattle area. Whether you’re in Bellevue, Redmond, Bothell, or Kirkland, our certified technicians are ready to deliver comfort and care you can count on backed by integrity, expertise, and local experience.