Reliable Cooling Starts with Expert Air Conditioning Services

Stay cool and comfortable with professional air conditioning services from Dwello Home Services. Our experienced technicians provide reliable AC installation, repair, maintenance, and system replacements designed to keep your home running efficiently throughout the hottest months. We use trusted equipment and proven techniques to deliver consistent cooling, improved energy efficiency, and long-lasting performance.

Whether your system needs a quick repair, routine maintenance, or a complete upgrade, Dwello Home Services delivers dependable solutions tailored to your home’s needs. With prompt service and skilled professionals, we help homeowners enjoy worry-free comfort all year long.

  • AC Installation & System Replacement
  • Fast and Reliable AC Repairs
  • Preventive Maintenance & Seasonal Tune-Ups
  • Energy-Efficient Cooling Solutions
  • AC System Inspections & Diagnostics
  • Thermostat Installation & Optimization
  • Condenser & Coil Replacement
  • Same-Day Service When Available

Contact Us

We’re here to help. Reach out today!

Expert Cooling Installation by a Certified HVAC Contractor

Installing a new air conditioning system is a major investment in your home’s comfort and energy efficiency. A certified HVAC contractor ensures the system is properly sized, safely installed, and fully compliant with local building codes.

Professional installation protects your manufacturer warranty while maximizing system performance and efficiency. It also helps reduce energy costs and extends the lifespan of your equipment. With Dwello Home Services, you gain peace of mind knowing your cooling system is installed correctly and built to deliver reliable comfort for years to come.

Same-Day AC Services & Air Conditioning Repair

Whether you need a quick repair or a complete system upgrade, Dwello Home Services is ready to help. Our technicians service all makes and models and provide expert recommendations tailored to your home. From routine maintenance to full cooling system replacements, we deliver dependable solutions you can trust.

AC Repair

Fast diagnostics and reliable repairs to restore comfort and improve efficiency.

AC Installation

Professional installation of modern systems for optimal airflow and long-term savings.

Heat Pump Installation

Energy-efficient heating and cooling tailored to your home.

AC Condenser Replacement

Replace old outdoor units to restore cooling and reduce energy costs.

AC Coil Replacement

Fix leaks and improve heat transfer with new evaporator coils.

Air Handler Replacement

Upgrade your indoor unit for quiet, strong, and consistent airflow.

Duct Cleaning

Remove dust and buildup to improve air quality and system performance.

Attic Insulation

Enhance comfort and efficiency by reducing heat loss and gain.

AC Maintenance
Plan Benefits

The Dwello Maintenance Plan ensures peak AC performance, lower bills, and fewer repairs. Stay cool and worry-free with our expert year-round care.

Our Air Conditioning Process

We follow a thorough, step-by-step process to ensure your air ducts are cleaned right the first time.

01

Professional Assessment

We begin with a detailed inspection of your space and current system to identify the most efficient cooling solution tailored to your needs.

02

Precision Installation

Our expert technicians handle the setup with meticulous care, ensuring every component is calibrated for peak performance and maximum energy savings.

03

Performance Testing

We conduct a final, rigorous check to verify airflow, thermostat accuracy, and system efficiency, leaving you with perfect, worry-free comfort.

Why Air Conditioning Matters

A reliable air conditioning system isn’t just about staying cool—it’s essential for maintaining comfort, improving air quality, and protecting your home during the hottest days of the year.

With the right AC setup, you can enjoy consistent temperatures, lower energy costs, and a healthier indoor environment for you and your family.

Consistent Cooling Comfort

Keeps every room in your home cool and comfortable, even during peak summer heat.

Energy Efficiency & Savings

Modern AC systems reduce energy usage and help lower your monthly utility bills.

Cleaner, Healthier Air

Filters out dust, allergens, and pollutants—improving your indoor air quality.

Trusted by Our Clients

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Debra Morris profile picture
Debra Morris
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Richard and his crew did a great job. They did a good job explaing the pros and cons of the system and were very prompt in getting back to me.
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Lauren Wylie profile picture
Lauren Wylie
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When our furnace was nearing end-of-life, we reached out to Castle for quotes on a replacement, a heat pump, and a dual fuel system, with some redesign of our duct work in the furnace room. We really wanted to go with a heat pump, but due to some circumstances that are unique to our house, we decided to go with a gas furnace replacement. We didn't make a decision right away, and Richard would check in with us on occasion, but wasn't pushy at all. Then, when our furnace gave out completely (in the middle of a cold snap in December), he was able to revise our quote quickly. We took three other bids; Castle's was the best on price and we liked their maintenance program, which we plan on purchasing. We also appreciated the time taken with us to answer questions and commit to a timely install. Key to decision was their proposal to a required change in furnace configuration and redesign / alteration of the ductwork. Even though we were in the midst of the holiday season, Castle committed to get the job done before Christmas, and did just that. The install team was professional and efficient, and a pleasure to work with. Thank you!
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Steve C. profile picture
Steve C.
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Richard and his team installed a new heat pump system (heating and AC), and replaced all the under floor ducting in our San Rafael home. Richard and his team are great - professional, responsive, knowledgeable, fair, and friendly. Our system is performing as expected and we are very happy to have worked with the Castle team.
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Celeste Gonzalez profile picture
Celeste Gonzalez
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So happy I made the investment to upgrade my hvac with Richard! We had just bought our home and noticed there was something’s off with our air and heating system. Richard came out promptly and let us know of the issues and hazard our old Unit was causing. I know nothing about this but loved how he was able to explain it to me in a manner that was simple and easy for me To understand. we schedule for a new hvac system and ducting to improve airflow so that we can keep our house heated and cooled when needed. It’s been night and the day the difference we have seen and felt since upgrading our whole system! Now when I run my ac the house actually cools down evenly and the airflow is actually felt unlike how it Had been before we did the upgrade. In this cold December days I’ve been able To stay warm and keep my house toasty without the need of constant small space Heaters I was running almost all day. Yes, it was an investment but as a homeowner I’m so grateful for their professionalism, keeping their job site clean (I’m a bit of a clean freak lol) while Doing this mayor upgrade. We are now all able to be comfortable at Home and no more nagging from the kids about how cold the house is. I can be at home comfortably without worrying about what the weather is doing. I’m so glad we decided to go with them! the skill and quality of work is seen. I was worried about not being able to feel or see the results but oh it’s been a huge!! I can feel the upgrade to keeping our home at a constant temperature. This is the one upgrade I don’t regret investing in.
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Margaret Shepherd profile picture
Margaret Shepherd
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This review is one-year in the making. My apologies to Richard and his team for this delay. August 2024, Richard and his team replaced our aging heating system and added air-conditioning. After speaking with several other companies, Richard was hands down the guy to go with. All communications leading up to install was clear, accurate and on point. Since having our system over a year we've had no issues and enjoyed a warm cozy home during the winter and a cool place to relax on warmer days. Hands down, if you're looking for HVAC service please consider Castle Heating and Air, you wont be disappointed. Margaret Shepherd ~Petaluma
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Emily Farrant profile picture
Emily Farrant
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I am so glad I found Castle Heating!! We were having aircon issues, got a quote from a big company in the area, who told us we had to replace our entire system and tried to get us to book the following week. Richard came out after, looked at the system and told us the system is fine, could replace one part and to keep running it. He was so honest and helpful - I couldn't believe another company tried to sell us a 30k new system and he came out and found one small part we could replace. I would not go with anyone else but him. Saved us and I can't thank him more!!
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Jonathan Cole profile picture
Jonathan Cole
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Great experience with Richard and his team. Timely, responsive and easy to work with. They installed a split system for my ADU.
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Gail Mardfin profile picture
Gail Mardfin
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When looking to replace my furnace, Richard, the owner of Castle Heating reached out to me with a clear offer to help. They came promptly and measured the house to be sure the correct furnace they quoted on would be the best. He offered sound advice on which brand was the best choice for me. In all our interactions, I was super-impressed with the professionalism and good customer care they provided. I ended up going with another company simply because of scheduling, but would not hesitate to recommend Richard and Castle Heating & Air. Get a quote! They were super competitive.

Fast AC Repair When You Need It Most.

Don’t suffer through the heat. Our expert technicians provide rapid diagnostics and reliable repairs to get your air conditioning back up and running—fast.

Our Special Offers

Save on essential HVAC and plumbing services with exclusive CastleAC deals. Call today for details. Offers are limited and cannot be combined. Terms apply.

Frequently Asked Questions

Answers to Common AC Questions

We provide a full range of cooling solutions tailored to your space, including central air conditioning, energy-efficient ductless mini-splits, and heat pumps. Whether you need a system for a single room or a large commercial building, we can help you choose the right model for your needs.
For optimal performance and energy efficiency, we recommend a professional maintenance check at least once a year—ideally in the spring before the peak cooling season. Regular servicing helps prevent costly breakdowns and extends the lifespan of your unit.
First, check if your thermostat is set correctly and ensure your air filters aren’t clogged with dust. If those aren’t the issue, you may have a refrigerant leak or a failing compressor. We recommend turning the unit off and scheduling a repair immediately to avoid further damage.
You can lower your energy bills by installing a programmable thermostat, sealing air leaks around windows and doors, and keeping your filters clean. Additionally, upgrading to a modern, high-SEER (Seasonal Energy Efficiency Ratio) unit can significantly reduce energy consumption compared to older models.
Yes! We understand that a broken AC in the middle of a heatwave is more than just an inconvenience. We offer emergency repair services to ensure your home or business stays cool and comfortable when you need it most.