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

New HVAC Installation and Replacement

Looking for reliable HVAC installation and replacement services? Our expert technicians provide professional heating and cooling system installation and replacement for homes and businesses, ensuring energy efficiency, comfort, and long-lasting performance.

Certified and Backed by Leading HVAC Brands

Professional HVAC Installation & Replacement Services

Your home’s HVAC system plays a key role in keeping your indoor environment comfortable throughout every season. Whether you’re installing a new system for a recently built home or replacing an older, inefficient unit, our certified technicians ensure your HVAC setup is done right — the first time.

We specialize in high-efficiency HVAC system installation and replacement, helping homeowners reduce energy costs while maintaining consistent indoor temperatures. Our team evaluates your home’s layout, size, insulation, and usage needs to recommend the best system for performance and comfort.

If your current HVAC system is struggling to heat or cool evenly, making unusual noises, or causing higher energy bills, we can help you upgrade to a modern, energy-efficient solution. Today’s HVAC systems operate quieter, provide better airflow, and use less energy — giving you comfort and savings you’ll notice right away.

We follow a clean, careful installation process — from removing old equipment to configuring your new system — ensuring optimal airflow, proper venting, and efficient operation. With transparent pricing, honest recommendations, and dependable service, we make upgrading your HVAC system simple and stress-free.


Our New HVAC Installation & Replacement Services Include:

  • Complete system assessment and sizing guidance

  • Removal and safe disposal of old equipment

  • Professional installation of heating & cooling units

  • Thermostat setup and controls configuration

  • Full performance testing for maximum efficiency

Free Consultations

New HVAC System Installation

We design and install complete HVAC systems for dependable heating and cooling year-round. Ideal for new homes, remodels, additions, or upgrading outdated systems.

 

HVAC Replacement Services

We replace old or underperforming HVAC systems with modern, energy-efficient models that improve comfort, reduce noise, and help lower monthly utility costs.

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

Our technicians are fully licensed, insured, and trained on the latest HVAC systems, for safe, code-compliant work.

Affordable & Transparent Pricing

We provide upfront, honest pricing with no hidden fees, ensuring you know the cost before work begins.

Customer Satisfaction Guarantee

We stand behind every installation and repair, delivering quality workmanship you can trust.

Testimonials

Honest reviews from our clients who have used our services

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Rachel Jallits profile picture
Rachel Jallits
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Mike and Ryan installed our central AC and ADU mini-split a few weeks ago. Overall, a fantastic and smooth experience. Mike was incredibly patient with my many HVAC questions and stands behind his work! The mechanical inspector noted their work looked top notch and did a clean installation. They went above and beyond to ensure the concrete pad was shored up with an extra wood slat and minimal sheet rock cuts to run electrical from our utility room to the crawl space. Would highly recommend to anyone who is looking for either central AC or mini splits. Thank you Mike and Ryan - we’ve been staying cool this summer!
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Christian Petersen profile picture
Christian Petersen
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Great team! Great Service! Great Price! I couldn’t be happy with my heat pump install by Cloud 9. Do not hesitate to use them for all your heat and HVAC needs!
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albert nguyen profile picture
albert nguyen
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We are very happy with the installation of a heat pump through Cloud 9. Looking for HVAC installation is extremely stressful, and Brent was considerate and patient with his explanations of the process. A big reason we went with Cloud 9 was because of their installation. They were not rushed and weren't just "slamming in" a new heat pump in less than a day to move onto a new project. They took their time so that they could provide a high quality installation with attention to detail. The whole team of Brent, Mike, and Ryan were really great to work with!
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Richard Gibson profile picture
Richard Gibson
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I hired Cloud 9 to do my heat pump installation on my house. These guys came as a recommendation and I was very impressed all the way around with them. Hands down these were my favorite contractors I've worked with to date. Excellent communication, and punctual! Brent was easy to work with and Mike and Ryan were also super nice and fantastic - the entire team knows what they're doing. (Also these guys came in at the lowest bid!) Would hire them again for install and will be using them to service my heat pump in the future. (And yes, Brent is right.. you DO want the Mitsubishi Hyper Heat! - the thing is incredible)
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Michael Borodkin profile picture
Michael Borodkin
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I had a great experience working with Brent at Cloud 9 during the quote process. He was incredibly honest, flexible, and truly focused on finding the best solution for our needs rather than just making a sale. He took the time to explain my options and answer my questions to ensure we understood what would work best for our home at the right price!
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Michael Mannery profile picture
Michael Mannery
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Brent from Could9 provided a reasonable $$$ and professional proposal he also gave detailed explanation of work that needed to be done. They discussed my needs and help me make a choice on a Mitsubishi heating and air system for my house. Mike came and assessed one more time before the work started. They installed the air handler and duct work in the attic for my SFR. Mike Ryan and Brent were extremely nice and willing to explain as the install was happening. I made the right decision using Cloud9. I am very happy and would recommend them for heating and cooling needs.
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Usha Pudasaini profile picture
Usha Pudasaini
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It was a great smooth experience starting from getting quotes to the job completion. Brent, and Mike were easy to communicate with and understood how we would like the installation done. Mike came up with some good recommendations which we really appreciated. We are ready for summer. Thank you Mike, Brent and Ryan.
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Dorothy Gorman profile picture
Dorothy Gorman
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Within the past 3 months I have had Brent and his team install both a new hot water heater and a new Mitsubishi heat pump at my house. I am extremely happy with both. Brent is great to work with - he is both responsive and flexible. The quotes / rates he provided were super competitive. His team of installers are great guys and did exceptional work. I have already referred Brent to several friends and family members and highly recommend Cloud 9 to anyone looking for HVAC services or a new hot water heater. I can assure you, you will be very pleased!
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Gunnar Conley profile picture
Gunnar Conley
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Brent and his crew of installers, Mike and Ryan, were exceptional in their work replacing our oil furnace with a Mitsubishi Heat Pump system. Brent was highly communicative, transparent and honest. Mike and Ryan were personal and professional and made the install process seem like easy work. I highly recommend Cloud 9 to anyone looking for HVAc services and I will definitely use them again in the future.
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Daniel Orvik profile picture
Daniel Orvik
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I just called Brent and Mike and they spent the time on the phone with me to diagnose my problem and advise me as much as possible over the phone. This is totally different from the company that actually installed my unit (zero help, terrible availability, no empathy). I will definitely be using this company in the future for the upgrade. Thank you so much, Cloud 9.

Frequently Asked Questions

How do I know if I need a new HVAC system?

If your current system is over 10–15 years old, needs frequent repairs, or struggles to heat/cool your home evenly, it may be time for a new HVAC installation.

Most installations are completed within 1 day, but larger systems or additional ductwork may take slightly longer.

Yes, we offer high-efficiency HVAC units designed to reduce energy usage, increase comfort, and lower monthly utility bills.

Absolutely. New systems offer better filtration, ventilation, and humidity control, helping create a healthier indoor environment.

Yes, we safely remove and dispose of your old unit and handle all necessary cleanup.

Yes, all new HVAC systems come with manufacturer warranties, along with our service and workmanship guarantee.

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.