4.9
White pixelated five-pointed star shape.White pixelated five-pointed star shape.White pixelated five-pointed star shape.White pixelated five-pointed star shape.White pixelated five-pointed star shape.
Based on Google reviews
24/7 Emergency Service
24/7 hours support
Reliable solutions for all your home needs.
HomeRight arrowServicesRight arrow

AC Replacement in Alamo, CA

Upgrade your home with expert AC replacement in Alamo, CA. Enjoy superior comfort, lower bills, and healthier air. Get a free, transparent estimate today!

AC Replacement in Alamo, CA: Upgrade Your Home's Comfort & Efficiency

In Alamo, CA, where warm summers are a cherished part of life, a reliable and efficient air conditioning system isn't just a luxury—it's essential for your family's comfort and well-being. For nearly five decades, Stewart Heating Plumbing Air Conditioning has been the trusted name for HVAC solutions across Contra Costa County, including expert AC replacement services right here in Alamo. Since 1974, we’ve been dedicated to enhancing the comfort, safety, and health of local homes, ensuring that when it’s time to upgrade your cooling system, you receive not just a new unit, but a complete solution tailored to your specific needs and the unique climate of the Bay Area. We pride ourselves on delivering installations that work right the first time, every time, built on a foundation of integrity, friendliness, and a commitment to your satisfaction.

Learn more about our legacy: About Stewart Heating Plumbing Air Conditioning

7 Clear Signs Your Alamo Home Needs a New Air Conditioner

Deciding to replace your air conditioner is a significant investment, but often, it's the most cost-effective and comfortable solution in the long run. Here are the key indicators that your current AC system may be nearing the end of its useful life:

  • Age of the System: If your air conditioner is 10 to 15 years old or more, it’s likely operating far less efficiently than newer models. As systems age, components wear down, leading to decreased performance and higher energy consumption.
  • Frequent & Costly Repairs: Are you calling for AC repair services multiple times a season? If the cost of repairs is starting to add up, or if individual repairs are expensive, it might be more economical to invest in a new, reliable system.
  • Spiking Energy Bills: A noticeable and unexplained increase in your monthly utility bills often indicates your AC system is struggling to cool your home. Older units simply can't match the efficiency of today's models.
  • Uneven Cooling: Do you experience hot and cold spots throughout your Alamo home? This could suggest your AC system is no longer distributing air effectively.
  • Excessive Noise or Strange Odors: Grinding, squealing, banging, or persistent musty odors are clear warning signs. These often point to mechanical issues or mold growth.
  • Refrigerant Leaks (Especially R-22): If your system uses R-22 refrigerant, finding this specific refrigerant is becoming increasingly difficult and expensive due to its phase-out. A leak might necessitate full system replacement.
  • Poor Indoor Air Quality: A failing AC can impact your indoor air quality. If you notice increased dust, humidity, or allergy symptoms, your old system might not be filtering air effectively.

The Alamo Homeowner's Guide: When to Repair and When to Replace Your AC

The "repair vs. replace" dilemma is common for homeowners. While minor repairs can extend an AC's life, there comes a point when replacement is the smarter choice. A popular guideline is the "$5,000 Rule": if the cost of your AC repair, multiplied by the age of the unit, exceeds $5,000, then replacement is likely the more financially prudent decision.

However, consider these additional factors:

  • Unit Efficiency: Even if repairs are minor, an older unit with a low SEER rating will continue to cost you more in energy bills.
  • Cost of Past Repairs: Continuing to invest in a money pit is a poor long-term decision. If you've already spent heavily on repairs, it's time to reconsider.
  • Remaining Warranty: If your system is out of warranty, you're paying full price for parts and labor, increasing financial risk.
  • Long-Term Home Plans: Staying in your Alamo home long-term? Investing in a new, reliable system pays off in comfort and savings. Planning to sell? A new HVAC system adds market value.
  • Peace of Mind: Knowing your home has a dependable AC system provides invaluable peace of mind, especially during the summer.

Unlock Superior Comfort, Savings, and Health with a New AC System

Upgrading your air conditioning system brings a host of benefits that extend far beyond simply cooling your home:

Significant Energy Savings

New AC units boast much higher SEER or SEER2 ratings, using less electricity to produce the same amount of cooling. For homes in Alamo, upgrading to a high-efficiency model can lead to substantial reductions in monthly energy bills. Learn about available incentives: PG&E Rebates

Unrivaled Home Comfort

Modern ACs provide more consistent temperatures and better humidity control. Integration with smart thermostats allows for precise, remote-controlled comfort.

Enhanced Indoor Air Quality

Newer systems seamlessly integrate with advanced air filtration systems, UV lights, and humidity control features, improving indoor air quality significantly.

Increased Property Value

A new HVAC system is a significant asset that appeals to potential homebuyers by lowering utility costs and reducing immediate maintenance concerns.

Environmental Responsibility

High-efficiency AC systems reduce your carbon footprint, contributing to a more sustainable future. Trust Stewart Heating Plumbing Air Conditioning to recommend the greenest options.

Finding the Perfect Cooling Solution: Central AC, Heat Pumps & Ductless Mini-Splits

Stewart Heating Plumbing Air Conditioning offers cutting-edge cooling solutions to match the unique architecture and needs of Alamo homes:

Central Air Conditioning

Ideal for homes with existing ductwork. We ensure proper sizing and installation for maximum efficiency and uniform cooling.

High-Efficiency Heat Pumps

Providing both heating and cooling, these units are energy-efficient and perfect for the Bay Area's moderate climate.

Ductless Mini-Split Systems

Perfect for additions or homes without ductwork. Each unit can be controlled independently, reducing energy waste.

We also conduct Home Energy Audits to ensure your new system is perfectly matched to your home’s requirements.

Our Step-by-Step Approach to a Stress-Free AC Upgrade

At Stewart Heating Plumbing Air Conditioning, your AC replacement process is smooth, transparent, and hassle-free:

  1. Personalized Consultation & Home Assessment: Includes an in-depth home evaluation and energy audit.
  2. Expert System Recommendation: Tailored options explained clearly, along with costs.
  3. Professional, Efficient Installation: NATE-certified technicians deliver flawless installation with minimal disruption.
  4. Post-Installation Support & Warranties: Includes thorough testing, education on your new system, and strong warranty support.

Request your free estimate now: Schedule HVAC Installation Estimate

Understanding Your Investment: AC Replacement Costs in the Bay Area

The cost of AC replacement in Alamo can range between $5,000 and $12,500. Factors include:

  1. Unit Size (Tonnage)
  2. SEER/SEER2 Rating
  3. Brand and Model
  4. Ductwork Modifications
  5. Labor Complexity
  6. Additional Features (Smart thermostats, filtration, etc.)

You’ll always receive a detailed, transparent quote from Stewart Heating Plumbing Air Conditioning with no hidden fees.

Smart Ways to Finance Your AC Replacement & Maximize Savings

Stewart Heating Plumbing Air Conditioning makes your upgrade affordable with flexible Financing Options and expert help securing rebates:

  1. Local Utility Rebates
  2. Federal Energy Tax Credits

We’ll help you claim all applicable savings and reduce your upfront investment.

Your Trusted Local Partner for AC Replacement Since 1974

When it comes to AC replacement in Alamo, Stewart Heating Plumbing Air Conditioning stands apart:

  1. Deep Local Roots
  2. Certified, Highly-Trained Technicians
  3. Upfront, Transparent Pricing
  4. Industry-Leading Warranties & Guarantees
  5. Legacy of Customer Trust — See what your neighbors say: Customer Reviews
  6. Green-Focused Approach — Maximize energy savings with our HVAC Maintenance Agreements

Choose a company that’s been putting customers first for nearly 50 years.

Elevate Your Comfort

Upgrading your AC system with Stewart Heating Plumbing Air Conditioning isn’t just about replacing outdated equipment—it’s about transforming your living experience. Enjoy quieter operation, lower energy bills, cleaner air, and consistent comfort in every room. As your trusted local HVAC partner since 1974, we bring unmatched expertise, integrity, and customer satisfaction to every project.

Don't wait for another heatwave to discover your system isn't up to the task. Upgrade today and feel the difference only Stewart Heating Plumbing Air Conditioning can deliver.

Request Service Now or Schedule Your Free Estimate and take the first step toward total home comfort.

Frequently Asked Questions About AC Replacement

How long does AC replacement take?

Most standard installations are completed in 1–2 days. Complex installs may take longer.

What is SEER/SEER2 and why is it important?

SEER measures cooling output vs. energy input. Higher ratings = greater efficiency and lower costs.

Do I need new ductwork?

Not always. But old, leaking, or poorly sized ducts can hurt your new system’s efficiency.

What kind of warranty comes with a new system?

Typically 10 years for parts, with labor warranties offered separately. We explain all options clearly.

Are permits required in Alamo?

Yes. And Stewart Heating Plumbing Air Conditioning handles all permits and inspections for you.

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
No items found.
No items found.
No items found.
No items found.
No items found.
No items found.
No items found.
No items found.
No items found.

Customer Testimonials

Star IconStar IconStar IconStar IconStar Icon

Very professional and complete. I would recommend Stewart to anyone. Highest quality of workmanship and clean installation.

Roger S.
Star IconStar IconStar IconStar IconStar Icon

Stewart Heating Plumbing Air Conditioning just did some work for us for the first time. They did an installation at my home and it turned out well. I thought the price was fair and I definitely would use them again. The technicians were very friendly and knowledgeable about their work. I highly recommend Stewart Heating Plumbing Air Conditioning and already told friends to use them.

Sami S.
Star IconStar IconStar IconStar IconStar Icon

We have been using Stewart Heating Plumbing Air Conditioning since 1995. They put the original heating and air unit in the house, and we have just stayed with them. They are dependable and honest people, and they have done a good job for us every time that we have used them!

Thomas M.
Star IconStar IconStar IconStar IconStar Icon

They came and did an inspection and are coming tomorrow to do the repair.

Talia T
Star IconStar IconStar IconStar IconStar Icon

They replaced a regulator the first time, and then the water heater vent had to be replaced. They did great work.

Grand G
Star IconStar IconStar IconStar IconStar Icon

The gentleman that serviced us was helpful, insightful, and knew what he was talking about. Overall, it was a great experience.

Gordon S