Cloud 9 Heat & Air was awarded the 2025 Mitsubishi Diamond Contractor of the Year!
A ductless heat pump is one of the most efficient ways to maintain ideal indoor temperatures — providing both heating and air conditioning without requiring ductwork. It’s a great solution for older Seattle homes, room additions, basements, garages, or spaces where traditional HVAC systems aren’t practical.
Our certified technicians specialize in mini split heat pump installation, ensuring your unit is properly sized, positioned, mounted, and tested for maximum comfort and energy performance. We handle everything from choosing the right model to final setup and calibration.
Ductless systems use advanced inverter technology to deliver consistent, quiet comfort while reducing energy consumption. This means lower utility bills, improved indoor air control, and personalized temperature comfort in every room.
We provide honest recommendations, transparent pricing, and professional installation backed by dependable service. No mess, no guesswork — just comfort done right.
In-home comfort assessment and sizing guidance
Wall-mounted indoor unit + outdoor condenser installation
Refrigerant line setup and secure mounting
Electrical connections and system testing
Final performance check to ensure smooth and quiet operation
Custom mini split installation designed to deliver quiet, efficient heating and cooling without the need for ductwork. Ideal for older homes, remodels, and room-specific comfort control.
Create personalized comfort in multiple rooms with a multi-zone ductless heat pump setup. One outdoor unit can power several indoor heads for flexible temperature control throughout your home.
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.
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.
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.
Trusted experts delivering reliable heating & cooling solutions for comfort in every season.
Our Mitsubishi Diamond-certified technicians size and position every indoor and outdoor unit with precision — so your ductless heat pump delivers quiet, efficient heating and cooling exactly where you need it, without the compromises of a DIY or cut-rate install.
Ductless systems qualify for some of the best rebates available in Washington, and we help you claim every dollar — alongside a clear upfront quote and financing options that make the investment straightforward.
From single-zone installs to whole-home multi-zone setups, we calibrate every unit for consistent comfort in every room and won't leave until performance is confirmed. Every install is backed by Mitsubishi's manufacturer warranty and our own workmanship guarantee.
EXCELLENT Based on 21 reviews Posted on Google Rachel JallitsTrustindex verifies that the original source of the review is Google. 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!Posted on Google Christian PetersenTrustindex verifies that the original source of the review is Google. 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!Posted on Google albert nguyenTrustindex verifies that the original source of the review is Google. 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!Posted on Google Richard GibsonTrustindex verifies that the original source of the review is Google. 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)Posted on Google Michael BorodkinTrustindex verifies that the original source of the review is Google. 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!Posted on Google Michael ManneryTrustindex verifies that the original source of the review is Google. 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.Posted on Google Usha PudasainiTrustindex verifies that the original source of the review is Google. 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.Posted on Google Dorothy GormanTrustindex verifies that the original source of the review is Google. 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!Posted on Google Gunnar ConleyTrustindex verifies that the original source of the review is Google. 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.Posted on Google Daniel OrvikTrustindex verifies that the original source of the review is Google. 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.
A ductless system, also called a mini split, doesn’t need existing ductwork to install. It uses an outdoor unit connected to one or more indoor wall units. This makes it a common choice for additions, ADUs, and older Seattle homes where adding ducts would be expensive or impractical.
Yes. Most ductless systems we install handle both, which is part of why they’ve become popular in Seattle. One system covers your winter heating and summer cooling instead of running two separate units.
That depends on how many rooms or zones you want to control separately. We assess your layout and recommend a setup that covers your space without over installing units you don’t need.
They’re generally efficient compared to older electric heating, especially newer Mitsubishi Hyper Heat models built for colder climates like ours. Actual running cost depends on your home’s insulation and how you use the system, which we’re happy to talk through.
Ductless heat pumps are precision equipment, and Diamond status means our team completed Mitsubishi’s highest level of factory training. Cloud9 was named the 2025 Mitsubishi Diamond Contractor of the Year, which also unlocks extended manufacturer warranties for our customers.
Yes, that’s actually our specialty. As a Diamond Contractor, our installers are factory-trained on the Hyper Heat lineup built for colder climates, which is why so many Seattle homeowners come to us specifically for ductless installs.
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.