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 If your ductless system is outdated, inefficient, or too costly to fix, we’ll guide you through a replacement.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 $1,500 Off a New System
Receive up to $750 in manufacturer rebates and up to $750 discount from Guthrie. Valid on select systems. Must mention promotion at time of estimate appointment. Not valid on prior sales. Cannot be combined with any other offers. Restrictions apply. See dealer for details. Offer expires 7/31/2026.
- INSTALLATION
0% APR for 24 Months
Get 0% APR financing for 24 months on a new heating or air conditioning installation. 0% interest with 24 equal monthly payments.
Financing subject to credit approval. Valid on select systems only. 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 7/31/2026.
- 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 7/31/2026.
- WATER HEATER
Free Estimate on a New Heat Pump Water Heater Installation
Valid for an estimate for a new hybrid heat pump water heater installation or replacement.
Restrictions apply. See dealer for details. Offer expires 7/31/2026.
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.
As far as price goes, I paid a higher flat fee 12 years ago from one of the larger local companies. I'm very impressed with pricing and quality of work.
I highly recommend Guthrie & Sons and Rob.
Christian and his crew did a great job on the install everything was smooth from start to finish.
I would definitely recommend this company here in Murrieta.
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.
