Mini Split Repair vs. Replacement
Sometimes it’s obvious—your unit won’t turn on, it’s making strange noises, or the room’s never the right temp. Other times, it’s less clear: maybe your bills are up, or the system’s working harder than it used to. If you’re unsure, our highly trained HVAC professionals will help you figure out the best option.
If a repair will get you more years of comfort, we’ll recommend it. If your ductless system is outdated, inefficient, or too costly to fix, we’ll guide you through a replacement.
We follow the $5,000 rule—if the repair cost times the system’s age is over $5K, it’s usually time to replace. Age, performance, and past repair history all play a role.
Our NATE-certified technicians are trained to diagnose, repair, and replace systems to the highest industry standards—so whatever your mini split needs, you’re in expert hands.
Free Online Ductless Mini Split Replacement Cost Calculator
Just starting to look into the cost of a new wall-mounted cooling and heating unit? You’re not alone. We’re always happy to provide a free in-home quote, but we also know your time is valuable. That’s why we offer a quick, easy-to-use ductless system replacement cost calculator—so you can get a ballpark estimate without picking up the phone. It’s a helpful first step in comparing pricing and system types, whether you’re planning ahead or looking to move quickly.
We can also help you uncover rebates, tax credits, and incentives available here in San Diego.
And if you need financing, we’ve got flexible plans to make your ductless replacement more manageable upfront. Wherever you are in the process, we’re here to help you move forward with confidence.
Breaking Down the Best Ductless Mini Split Systems
Most ductless mini splits last 10 to 15 years—maybe even longer with proper maintenance. So if yours is on its way out, chances are the technology has changed quite a bit since your original install. Today’s systems are more efficient, quieter, and packed with smart features that make your life easier.
At Guthrie & Sons, we stay current on all the best options and help you choose the right ductless replacement for your San Diego area home.
Top Questions to Ask Yourself During Your Mini Split Replacement
Replacing your mini split isn’t just a swap—it’s a chance to get it right. Here are the key questions to ask so your new system fits your home, habits, and comfort needs.
Just because your old mini split was a certain size doesn’t mean the new one should be. Maybe you remodeled, closed off a space, or added insulation over the years. We’ll take fresh measurements, look at how you actually use each room, and make sure your ductless mini split replacement matches your home’s current needs, not old blueprints.
If your old system was installed 10+ years ago, it probably has a SEER rating (Seasonal Energy Efficiency Ratio) in the 13–15 range. Today’s ductless units can reach SEER 20+—which means they cool better using less electricity. We’ll help you choose a unit that keeps your home comfortable without overworking or overcharging you.
Even in San Diego, chilly mornings happen, and if your old unit struggled to keep up, that matters. HSPF (Heating Seasonal Performance Factor) ratings show how efficiently your system heats, and newer systems do it far better than older models. If your current setup left cold spots or took forever to warm up, we’ll fix that with the right replacement.
Still using an older ductless air conditioner with no heat function? Now’s a great time to switch to a system that does both—cooling in the summer, heating in the winter. A ductless heat pump installation gives you more flexibility and lets you ditch your furnace for good.
Older ductless systems usually had one job: to cool the space. Today’s replacements offer much more: Wi-Fi thermostats, smart remote controls, motion sensors, sleep modes, and ultra-quiet operation. If your last unit was basic, we’ll walk you through what’s available now so your new system does more than just the bare minimum.
- INSTALLATION
Up to $11,225 Off a New Heat Pump
Receive up to $8,000 in HEEHRA rebates, up to $625 in Comfortably California rebates, and up to $2,600 in Federal Tax Credits when you install a new heat pump system. Must be income-qualified to receive HEEHRA rebate. Valid on residential properties only. Valid on select systems. Rebates available until funds last. System must be installed by 2/28/26 to receive Federal Tax Credits. Restrictions apply. See dealer for details.
- INSTALLATION
$8,000 HEEHRA Rebate
Get income-qualified and receive an $8,000 rebate on a new heat pump system. Can be combined with up to $625 Comfortably California rebate, $2,000 heat pump Federal Tax Credit and $600 electrical upgrade Federal Tax Credit. Rebate available until funds last. Restrictions apply. See dealer for details. Offer expires 2/28/26.
- INSTALLATION
$625 Comfortably California Rebate
Valid on select systems. Valid on residential properties only. Can be combined with HEERHA rebates, $2,000 heat pump Federal Tax Credit and $600 electrical upgrade Federal Tax Credit. Rebate available until funds last. Restrictions apply. See dealer for details. Offer expires 2/28/26.
- INSTALLATION
$2,600 Heat Pump Federal Tax Credit
Valid on select systems. Must be installing a heat pump system with electrical wiring or panel upgrade. Valid on a primary residential home only. Can be combined with HEEHRA rebates and up to $625 Comfortably California rebates. System must be installed by 2/28/26 to receive this tax credit. Restrictions apply. See dealer for details.
Real Reviews From Real Customers
We do things differently, and our customers appreciate it. See what some of our thousands of satisfied customers have to say about working with us.
Please congratulate them for a job well done!
We worked with Vlad T., who had previously been out to our home and saved us tens of thousands of dollars by getting our existing AC unit up and running when other companies were pushing for a full replacement. That experience alone earned our trust.
Now that we’re finally ready to purchase new units, there was no question that Guthrie & Sons was the only company we would consider, and Vlad was the obvious choice. He was extremely professional, punctual, and exceptionally knowledgeable, taking the time to explain options clearly and thoroughly. His expertise and honesty made the entire process straightforward and stress-free.
If you’re looking for an HVAC company you can truly trust—one that values integrity, quality workmanship, and customer service—I cannot recommend Guthrie & Sons and Vlad T. highly enough. This is how service should be done.
I only wish the annual service was cheaper 🙂
Zach M. came by and installed on new one. He was extremely professional and completed the installation promptly.
This was another great experience all around and I gladly recommend Guthrie and Son's for all your HVAC needs.
From start to finish, their team was outstanding. They worked incredibly hard, treated our home with respect, and left everything spotless—truly the cleanest job site I’ve ever seen after a major project. The installation itself was seamless, and the quality of their work shows in every detail.
If you’re looking for a company that combines deep knowledge, excellent craftsmanship, and genuine care for their customers, Guthrie & Sons is it. Absolutely five stars across the board!
What really stood out was his problem-solving ability and willingness to go the extra mile to ensure everything was operating as it should. He communicated clearly throughout the process, kept us updated, and made sure we felt confident in the work being done.
It’s not often you come across someone who combines technical expertise with such a strong work ethic and positive attitude. We’re very grateful for his efforts and would highly recommend Kareen to anyone needing reliable HVAC service.
Vlad came out to provide an estimate and was able to size an HVAC system that worked well for my house.
They installed it quickly, without issue and helped me set up an app on my phone to control.
The system is working great to heat and cool my house and is whisper quiet.
Highly recommend going with Guthrie and Sons if you want a high quality experience for large and important purchases.
