What is a Ductless Mini Split?
Think of a ductless mini split like a space heater and window AC had a smarter, quieter, way-more-efficient baby. It mounts high on the wall, connects to a small outdoor unit, and gives you excellent heating and cooling without needing any ductwork. That means less mess, faster installation, and comfort that’s easy to control by room.
Where can they be installed?
- Older homes with no ducts in place
- Converted garages, home additions, or studios
- Rooms that always seem too hot or too cold
- ADUs, guest houses, or rental properties
- Whole homes needing zoned temperature control
At Guthrie & Sons, we install both ductless mini split air conditioners and ductless mini split heat pumps in San Diego homes, so whether you need cooling only or year-round comfort, we’ll help you choose the setup that you need.
How Much Does it Cost to Install a Ductless Mini Split?
The cost to install a ductless mini split in San Diego depends on how many rooms you want to heat and cool, how complex the setup is, and the type of system you choose. A single-zone setup is typically less expensive than a multi-zone installation, but we’ll walk you through every option.
We offer free in-home estimates and a quick online quoting tool so you know exactly what your project will cost—no surprises. We’ll also help you apply for available tax credits and rebates, take advantage of seasonal specials, and explore financing options that work for your budget. At Guthrie & Sons, we make it easy to get top-quality ductless equipment without overpaying.
Not Sure Where to Start? Our Ductless Installation Services Cover It All
Still have questions? We’ve got answers—and real, honest guidance to help you decide what’s best for your home.
Prevent Breakdowns and Fix Problems Fast with Our Ductless Mini Split Maintenance Services
With proper care, a ductless mini split system can last 15 to 20 years or longer. But the key is maintenance. Letting a struggling unit run without service—especially if it hasn’t had a tune-up in a while—can lead to bigger problems and shorten its lifespan.
That’s why we always recommend calling a professional mini split company at the first sign of trouble. We also suggest scheduling a mini split tune-up once a year to keep everything running at peak efficiency, avoid costly breakdowns, and extend the life of your system. We have all the ductless mini split services you need, including:
- Mini Split Repair: If your mini split is leaking, blowing warm air, making odd noises, or not responding to your remote, we can help. We find the issue fast and offer expert mini split repair options.
- Mini Split Maintenance: During your ductless maintenance service, we clean the filters, inspect the refrigerant lines, check the electrical components, and make sure each zone is performing the way it should.
- Mini Split Replacement: If your system is older, struggling to keep up, or out of warranty, we can help you upgrade to a high-efficiency model that better fits your home’s needs.
Want your ductless mini split to last longer, run better, and cost less to own? Our USA Maintenance Plan has convenient options specifically for mini split systems. You’ll get annual tune-ups, priority service, member-only discounts, and more. Talk to our team about signing up and better protecting your investment right from the start.
- 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 🙂
