Ductless Mini Split Replacement
Ductless Mini Split Replacement in San Diego County That Restores Your Home’s Comfort and Efficiency
If your ductless system isn’t cooling or heating like it used to, there’s a good chance it’s time to replace it. Maybe it’s running non-stop, leaking, or costing too much to fix. At Guthrie & Sons, our team can remove your old unit and install a new one in no time. Call us today to discuss your ductless mini split replacement in San Diego—we make it easy to start fresh.
Replacing Your Mini Split? We Handle Every Detail
Once you’ve lived with a ductless mini split, it’s hard to imagine your home without one. The quiet operation. The zoned control. The lower energy bills. It just makes sense—until it stops working like it used to. No system lasts forever, and when it’s time for a ductless mini split replacement, you want the job done by people who know exactly what they’re doing.
Whether we installed your original system or not, Guthrie & Sons Heating, Air & Solar is the team San Diego trusts for HVAC work in the local area. We’re fully licensed, insured, and experienced in ductless mini split replacement services—from single-room setups to full multi-zone replacements. We’ll help you choose the best system for your home and budget, identify rebate opportunities, and install everything perfectly. We proudly serve all of San Diego County, Temecula, and Murrieta, and we’re here to make sure your new system delivers lasting comfort.
Ready to take the next step? Reach out to our team to discuss your ductless mini split replacement in San Diego, CA.

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 If your ductless system is outdated, inefficient, or too costly to fix, we’ll guide you through a replacement.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.
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.
Replacing a ductless unit isn’t a plug-and-play job—it takes electrical work, refrigerant handling, and real expertise. DIY mini split installs often lead to performance issues, leaks, or voided warranties. At Guthrie & Sons, we’re licensed, insured, and certified to handle your San Diego ductless mini split replacement.
Keep Your New Mini Split Running Like New With Year-Round Care
As your mini split gets older, it’s normal for it to need a little more attention, especially with San Diego’s salty air, heat waves, and year-round use. Even the best systems can develop hiccups: a sensor goes out, performance dips, or it just stops cooling like it used to. When that happens, call us for your mini split repairs.
But the best way to avoid breakdowns? Routine maintenance. We offer professional mini split tune-ups that keep your system efficient, quiet, and reliable. We’ll check refrigerant levels, clean components, test performance, and catch small issues before they turn into costly repairs.
Want the easiest way to stay ahead of problems? Join our USA Membership Plan. You’ll get scheduled tune-ups, priority service, repair discounts, and peace of mind all year long. It’s affordable, stress-free, and helps you protect the investment you just made. Because a well-maintained system doesn’t just last longer—it works better, too.
Frequently Asked Questions
Yes—in most cases, indoor and outdoor units are designed to work as a matched pair. Mixing old and new components can reduce performance and void the manufacturer’s warranty. We always recommend replacing both for long-term efficiency and reliability.
Sometimes, but it depends on their condition, size, and compatibility with the new system. We’ll inspect everything during your estimate to see what can safely be reused. If anything needs replacing, we’ll walk you through it clearly—no surprises.
Costs vary based on system size, number of zones, features, and installation complexity. We’ll provide a custom quote and help you explore financing, rebates, and incentives.
Most replacements take just one day, sometimes even just a few hours. If multiple units or extra upgrades are involved, it might take a bit longer. Either way, we work clean, fast, and keep you informed every step of the way.
Heating and Cooling Offers You Can't Miss
Big savings, same great service. See what offers are available now in Carlsbad for our favorite customers.
- WATER HEATER
$2,600 Federal Tax Credit on Heat Pump Water Heater
Valid on a qualifying heat pump water heater installation with electrical panel upgrade. Up to $2,000 (30% of cost) in Federal Tax Credits for a heat pump water heater and up to $600 (30% of cost) for an electrical panel upgrade. Can be combined with state rebates only. Restrictions apply. See dealer for details.
- INSTALLATION
Up to $11,750 Off a New System*
Qualify for HEEHRA and you can get up to $8,000 in HEEHRA rebates, up to $1,150 in manufacturer rebates and up to $2,600 in Federal Tax Credits for a total of up to $11,750 off a new installation. Valid on residential properties only. Cannot combine with any other offers. Must mention promo at time of estimate appointment. Restrictions apply. See dealer for details. Offer valid until funds last.
- REPAIR
Free Diagnostic w/ a Repair
Your diagnostic service call fee will be waived if you proceed with a repair. Cannot combine with other offers. Restrictions apply. See dealer for details. Offer expires 6/30/25.
- INSTALLATION
0% APR for 25 Months
Get 0% APR financing for 25 months on a new heating or air conditioning installation. 0% interest with 25 equal monthly payments. Financing subject to credit approval. Valid on residential properties only. Cannot combine with other offers. Must mention promo at time of estimate appointment. Restrictions apply. See dealer for details. Offer valid for an estimate appointment scheduled before 6/30/25.
Real Reviews From Real Customers
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Request a Quote for Your Ductless Mini Split Replacement in San Diego
We’re Guthrie & Sons Heating, Air & Solar—family-owned, locally based, and proud to serve San Diego homes and businesses since 2005. We know this climate, these neighborhoods, and what it takes to keep your house feeling just right. You won’t get a pushy sales pitch or generic recommendations—just clear answers from a team that treats you like family.
Whether you’re replacing one indoor unit or upgrading a full ductless setup, we’ll guide you through your options, help you find the right system, and make sure it’s installed the right way.
We’re licensed, insured, and experienced with all major ductless brands, so you can feel confident in the work from day one.
Give us a call or fill out the form to request your free quote for a ductless mini split replacement in San Diego, California.
San Diego, CA 92111