Age
Air conditioners typically last around 10 to 15 years. Once a unit is well into that range, replacement usually beats sinking money into an aging system.
Bay Area AC Replacement · Licensed · 13+ Years
Air Conditioner Replacement in the San Francisco Bay Area
When your AC is old, failing, or costing more to fix than it's worth, replacing just the unit — not the whole system — is the smart move. We remove the old one and install a properly sized, efficient replacement.
Free estimateLicensed (CSLB #1022608)Right-sized replacement13+ years experience
Free on-site estimate · No pressure · We come to you
What It Is
Replace the Unit,
Not the Whole System
When your air conditioner has reached the end of the road, you usually don't need to rebuild your entire system — you need to replace the one unit that's failing. AC replacement swaps out your old, worn, or inefficient air conditioner for a new one that's properly sized for your home, reusing the ductwork and the rest of your system where it's still sound. It's a targeted, cost-effective fix compared with a full system overhaul.
That's what sets it apart from a whole-system HVAC installation, which is the job when you're putting in an entire new system or have no HVAC at all. Here, the heating side and the ducts stay; only the air conditioner changes. If your furnace is on its last legs too, it can make sense to handle both together — see furnace replacement — and we'll give you an honest read on which path fits.
- Targeted fix — just the failing unit
- Properly sized for your home, not guessed
- Reuses your sound ductwork & system
- A more efficient, reliable AC
- Old unit removed and hauled away
- Minimal disruption, usually in a day
Repair or Replace?
When Replacing Beats
Repairing Again
A repair makes sense for a newer unit with a one-off fault. These are the factors that tip an AC toward replacement instead.
Repairs piling up
When you're calling for AC repairs again and again — or facing one big-ticket repair — the ongoing cost often outweighs the price of a new, reliable unit.
R-22 (Freon) refrigerant
Older units run on R-22, which has been phased out in the U.S. and is now scarce and expensive to recharge — often the tipping point toward replacement.
Rising cooling bills
An old AC loses efficiency as it wears, so climbing summer bills with no change in use are a sign a modern unit would run for less.
Weak or uneven cooling
If the AC struggles to cool the house or can't keep up on hot days even after service, it may simply be worn out or wrongly sized.
Noise or leaks
Loud operation, frequent refrigerant leaks, or a unit that trips breakers points to deeper wear that a replacement resolves for good.
Do You Need It?
Signs Your AC Needs
Replacing, Not Repairing
Some AC problems are worth fixing; others are the unit telling you it's done. Watch for these.
It's 10-15+ years old
An air conditioner past its typical lifespan is living on borrowed time — replacing it on your schedule beats an emergency failure in a heat wave.
It uses R-22 / Freon
If your unit needs R-22 to run, servicing it is only getting pricier as the refrigerant is phased out — a strong reason to replace.
Repairs cost more each year
When the yearly repair bill starts approaching the value of the unit, you're paying to keep an old system limping instead of upgrading.
It can't keep the house cool
An AC that runs constantly but never quite cools, even after service, is often undersized, worn out, or both — and due for replacement.
Frequent refrigerant leaks
Repeated leaks mean the system is deteriorating; topping it up again and again is a temporary patch, not a fix.
Bills keep climbing
Steadily rising cooling costs with the same usage are a classic sign an aging AC has lost its efficiency.
How We Work
Our AC Replacement Process
Replacing an AC is about matching the right unit to your home and swapping it cleanly. Here's how we handle it.
Assess & size
We check your current AC, ductwork, and home, and size the replacement to your space — not just a like-for-like swap, so the new unit actually fits your needs.
Recommend the right unit
We recommend a properly matched, efficient air conditioner (condenser and coil) that suits your home and works with your existing system.
Remove the old unit
We disconnect and remove your old air conditioner and haul it away, and recover any old refrigerant responsibly.
Install & connect
We install the new unit, connect it to your existing ductwork and air handler, and confirm everything is matched and sealed.
Charge, test & walkthrough
We charge the system, test that it's cooling properly, clean up, and walk you through your new AC — usually all in a single visit.
Free estimateLicensed (CSLB #1022608)Right-sized, matched unit
Why Attic Pros
The Bay Area's Trusted
Heating & Cooling Team
For over 13 years, Bay Area homeowners and businesses have trusted us with their cooling — because we give an honest call on repair versus replacement, size and install the new unit properly, and stand behind the work, instead of pushing the most expensive option.
- Licensed contractor (CSLB Lic. #1022608)
- SPCB-registered for pest-related work (Co. Reg. #9901)
- Diamond Certified & Angi Super Service Award winner
- Independently reviewed — verified Google ratings
- Honest repair-vs-replace guidance — no upselling
- Local team with 13+ years in Bay Area homes
Real Customers, Real Results
Trusted by Bay Area Homeowners
4.8
★★★★★
Based on 1,900+ verified Google reviews — trusted for heating, cooling & home services across the Bay Area
Google Review
★★★★★
Rodent intrusion and the associated damage they cause is the worst! After reading reviews, I decided on Attic Pros because they have great reviews and because they specialize in the work I needed. I was not disappointed. Within a few days of reaching out, Tom came out and did the estimate. The work began only two business days later! The work was scheduled over two days but they did it all in one! The guys arrived on time and were cheerful, polite, and pleasant to deal with. Kevin showed me pictures and video periodically throughout the day so I could see the work, start to finish. He answered all of my questions and explained everything clearly and patiently. Before they left they made sure there was no trash or debris left behind. The crawl space now looks like it belongs under a brand new home, it’s that clean and tidy. I highly recommend Attic Pros for all of your insulation and rodent elimination needs. Update: I came back and edited this, removing a star. The work and workers were great. However, a few days after the job, Julian from their business office messaged me that they had not received payment and the invoice was past due, even though they were paid IN FULL THE DAY OF WORK. Proof of payment was provided and he messaged me that a receipt would be sent when the payment was deposited. Very disappointing and unprofessional of him to go after a customer for payment when the problem lies with their accounts receivable. 10/14/26 I am adding to my review because issues had been discovered over time. They had missed a place where rats were entering, even though they had been out twice to check traps and found some. This guy did a less than thorough cleaning but he did close off the previously missed access point. My rat intrusion problem has been ongoing. 11/6/26 Attic Pros followed through and sent out Raul, an excellent worker, who took care of everything and made it right. While it may have been problematic for a bit, they kept working until it was all made right. They have been kind and communicative, specifically Paula. I will be calling them again in the Spring to work on a different area of my home.
C Hensley
Google Review
★★★★★
Samim very professional
Rick Weiss
Google Review
★★★★★
Did crawl space cleanup and rodent proofing. They were very efficient and thorough.
James Feichtl
Google Review
★★★★★
Samim was great and work very hard. We appreciate him very much.
Amir assadi-rad
Google Review
★★★★★
Attic Pros did a great job with sealing up holes and gaps and installing mesh I would recommend them I had a good experience with them
Felipe Bernal
Google Review
★★★★★
UPDATE: I really appreciate the company followed up after my concerns were raised. They took accountability for what happened, handled the situation professionally, and offered to fix all the issues. Their responsiveness and willingness to make things right completely changed my impression, and I’m happy to update my review to 4 stars. They ultimately completed the job, but the overall experience was far from hassle-free. During the process, they damaged our ceiling and later repaired it, though the result was not fully satisfactory. There were multiple mistakes along the way, both in the actual work and in billing, which meant we had to stay very involved to ensure nothing was missed. Communication was also a challenge. Our consultant, Tom, was not as responsive as expected, especially given how busy schedules can be in the Bay Area. We often had to follow up multiple times to get updates or have issues addressed. Overall, while the job was eventually finished, the process required more oversight and effort than it should have. If I were to go through this again, I would choose a different company.
Daniel Yahyazadeh
QUESTIONS, ANSWERED
Frequently Asked Questions
Straight answers to what people actually ask about replacing an air conditioner — when it's time, how it differs from a full install, and what's involved. Still unsure? Our team is happy to help.
Still have questions?
Talk to our team — we're here to help.
(800) 543-0382It usually comes down to age, repair costs, and refrigerant. If the unit is well into its typical 10-15 year lifespan, the repairs are getting frequent or expensive, or it runs on phased-out R-22 refrigerant, replacement is generally the better value than continuing to patch it. A newer unit with a one-off fault, on the other hand, is worth repairing — we'll tell you honestly which situation you're in.
AC replacement swaps out just the air conditioner and keeps the rest of your system — the furnace, air handler, and ductwork — where it's still sound. A full HVAC installation designs and installs an entire new system and is the right call for new construction, a home with no HVAC, or a complete system that's failed. If only the AC is the problem, replacement is the targeted, more economical fix; see our HVAC installation page for the whole-system case.
Most air conditioners last around 10 to 15 years, depending on how hard they run, the climate, and how well they've been maintained. Regular service can extend that, but once a unit is past its expected lifespan, replacing it on your terms is smarter than waiting for it to fail on the hottest day of the year.
Yes, quite a bit. R-22 refrigerant has been phased out in the U.S., so it's increasingly scarce and expensive, which makes servicing or recharging an older R-22 unit costly. For many homeowners with an aging R-22 system, replacing it with a unit that uses a current refrigerant is the more sensible long-term move. We'll factor that into our recommendation.
Usually, yes. The outdoor condenser and the indoor coil are a matched pair — pairing a new condenser with an old, mismatched coil can hurt performance, efficiency, and reliability. Matching the components properly is part of doing the replacement right, and we'll explain what your system needs.
In most cases, yes — if your ducts are in good shape, a replacement AC uses them as they are, which is part of what keeps the job targeted and cost-effective. We do check the ductwork during the assessment, because leaky or undersized ducts undermine even a brand-new unit, and we'll flag anything that needs attention.
A straightforward AC replacement is often completed in a single day. Because we're reusing your existing ducts and system, it's far less disruptive than a full installation — we remove the old unit, install and connect the new one, test it, and clean up. We'll give you a clear timeline with your estimate.
If your furnace is also old and near the end of its life, replacing both together can be worth considering — it's less disruption overall and lets us match the heating and cooling for better efficiency. If your furnace is in good shape, there's no need. See our furnace replacement page, and we'll help you weigh whether to do one or both.
LOCALLY OWNED AND OPERATED
Serving the Greater Bay Area & Sacramento Area
Explore More
Complete Home Comfort
Ready when you are
Get Your Free AC Replacement Estimate
Tell us what your air conditioner is doing — struggling, aging, or costing too much to run — and we'll assess it, tell you honestly whether to repair or replace, and give you a clear, no-pressure estimate.