Get Heating and Cooling Where You Need It, No Ductwork, No Problem
Family-owned HVAC company specializing in custom ductless
mini split installation and mini split repair in San Diego
Free Estimates | Parts and Labor Warranty | Easy Financing
Reliable Year-Round Comfort from One Compact, Duct-Free System
At Carini Home Services, we specialize in ductless installation, repair, and maintenance. Whether you need zoned comfort for your home, office, converted garage, or new ADU, our team delivers custom energy-efficient solutions for every job.
Ductless heat pump systems are ideal for homes without traditional ductwork, such as older craftsman-style properties. These units are quiet, compact, and highly efficient. Best of all, they provide both heating and cooling from a single system. While cooling-only versions are available, they’re generally not recommended, as installation costs are similar, but energy savings are lower compared to full heat pump setups.
What We Offer for Ductless Heating and Cooling
We offer a full range of ductless HVAC services, including:
Ductless System Installation
At Carini Home Services, no two homes are alike, which is why every duct-free HVAC installation is custom-designed. Whether the goal is to condition a single room or multiple zones, our team creates solutions tailored to your space and comfort needs.
The process begins with a no-cost consultation, where you’ll receive clear equipment recommendations, flexible pricing, and easy financing. From the first walkthrough to the final system test, our certified technicians keep you informed and confident throughout the entire installation. Every job is backed by a lifetime craftsmanship guarantee.
Ductless System Repair
When a ductless unit isn’t working properly, speed and accuracy matter. Our licensed HVAC professionals offer same-day repairs with clear estimates and no pressure to replace functioning systems. If a wall-mounted air handler isn’t cooling, a zone isn’t responding, or there’s a refrigerant issue, we’ll troubleshoot the problem and handle repairs on the spot using stocked parts.
We focus on honest diagnostics and long-term reliability, not upsells or unnecessary system swaps. You get straightforward service from techs trained to restore performance without delay.
Ductless System Maintenance
Preventive care is the key to system longevity, efficient performance, and maintaining manufacturer warranties. Our team performs thorough cleanings and multi-point inspections that include air filter refresh, coil care, circuit testing, and component checks.
For older equipment or units overdue for service, we also offer deep cleaning to remove debris, resolve airflow issues, and reset system efficiency. Whether it’s part of annual upkeep or a one-time service, consistent maintenance helps your equipment run stronger and longer.
What You Should Know About Refrigerants in Ductless Systems
Many homeowners aren’t aware that refrigerants have changed significantly in the past few years. At Carini, we still service older mini splits using R22, though this refrigerant has been phased out and is now limited and expensive to source. Most systems today run on R410A, but starting in January 2025, this refrigerant is being phased out too. Newer mini split models now use R32 or R454B, which offer better efficiency and lower environmental impact. When you’re upgrading or replacing a system, our technicians will help you choose a unit that aligns with current EPA regulations and delivers long-term value.
Curious how this affects pricing? Check out our 2025 HVAC Price Increase blog post for more info.
Custom Climate Solutions for Multi-Unit Properties Without the Bulk of Ducts
At Carini Home Services, we specialize in designing and installing duct-free systems for multi-family properties. Whether you manage a condo building, duplex, apartment complex, or a row of townhomes, our solutions deliver efficient heating and cooling without the disruption of traditional ductwork.
These systems are ideal for buildings with tight mechanical space or layout limitations. With zoning capabilities, each unit can enjoy independent temperature control, supporting both comfort and energy savings across the property.
From initial planning to long-term maintenance, we partner with property owners, managers, and HOAs to ensure smooth operation. Our work helps improve tenant satisfaction, reduce operating costs, and enhance the long-term value of the property.
Routine Service for Zoned HVAC
Ductless System Deep Cleaning
When you need a little extra care, we offer Deep Cleaning Maintenance. This is good for systems that have missed their annual maintenance.
Indoor Air Quality
We install Air Purification products, HEPA filters, Carbon and Static Filters, UV Lights, Ionizers, Air Scrubbers, and more. If your home is dry or humid, we also install humidifiers and dehumidifiers.
Wi-Fi Thermostat Installation & Smart Controls
Enjoy total climate control from your phone or smart home device with a Kumo Cloud, Nest, Ecobee, and more. Get insights into your electricity usage, instant notifications, and more.
Ductless Replacement
Is it time for an upgrade? We’ll help you choose a system that fits your home and energy goals. We offer Good, Better, and Best options, with easy financing and low monthly payments. Leave the city inspection scheduling, permit pulling, and paperwork submission to us.
San Diego Mini Split Experts since 2006
Carini Home Services
What Sets Our Ductless HVAC Team Apart from the Rest
✔Your Local Ductless System Specialist – Certified Elite Diamond Contractor
✔ Parts and Labor Warranty – Warranty Support That Goes Beyond the Standard
✔ Free Estimates – No-obligation quotes for installations & replacements
✔ Vintage Home Specialists – We specialize in older homes
✔ 0% Financing – Payments starting as low as $75/month
Why Ductless Systems Work So Well in Real Homes
- Older homes without ductwork, like craftsman cottages and large historic homes
- ADUs, garages, and room additions
- Home offices or nurseries
- Multi-story homes with hot/cold spots
- Heating and Cooling apartments, condos, duplexes, and townhomes
You can control the temperature in each zone independently. That means no more fighting over the thermostat or wasting energy in unused rooms.v
Local Reviews: See What Your Neighbors Say v
Dylan Thompson
“Awesome experience start to finish. Everything was professionally done and top notch from the design consultation to the installation. Everyone was friendly and we are thrilled with our new mini splits – they work perfectly! I’d recommend anyone go Carini!”
Eva Jarosz
I love my Carini mini splits, but after over a year it seemed my air flow wasn’t as efficient. I called the company and they sent a technician to assess. After inspecting everything he said the filters just needed to be cleaned, and he showed me how to do this (simple) and it works as good as new. He also explained a few other details to keep it tip top including proper cleaning of the compressor filter as well, and cleaning of the top of the splits themselves to facilitate air flow, and a recap of how the system works. His tutorial was great. This system is quiet and works better than any other HVAC system I’ve ever experienced (I’ve lived in hot humid climates all for over 60 years) It’s the best investment I’ve made for my home.
L R
“Carlos is the technician who arrived to take care of maintenance on min-splits. He was prompt, courteous, respectful and knowledgeable. He helped me with the remotes also:) I’ve been extremely happy with my HVAV system and Carini with the installation and upkeep.”
Orlando Archilla
“First of all this was a unique project. House boat. I was very limited on options and decided to use Carini Home Services for my mini splits. Absolutely fantastic. This project could have gone sideways quickly, but for the knowledge, professional attention, and dedication that Anthony demonstrated I’m a happy customer. Great outfit. If you are thinking on going with mini splits do not hesitate to reach out to Anthony.”
Amy Kaufman
“Carini has continuously given us great service and great products. We had 4 mini splits installed in Feb of 2018 and every rep and technician has been courteous, extremely knowledgeable and patient answering all questions and explaining every aspect. Carlos just came to give us the 2nd annual routine inspection and he truly provided perfect service and communication!”
How to Tell When Your Ductless System Needs Attention
Staying alert to changes in your heating and cooling setup can help you avoid costly breakdowns or early replacement. Here are some common warning signs that your duct-free system may need a professional checkup:
- Unusual Noises – It sounds like hissing, buzzing, or gurgling, which can indicate refrigerant leaks, airflow restrictions, or electrical issues inside the unit.
- Drop in Performance – When certain rooms don’t feel as warm or cool as they should, there may be a component issue affecting efficiency.
- Rising Energy Bills – A sudden spike in electricity use could mean your system is overworking due to a hidden malfunction.
- Ice or Frost Buildup – Ice forming on the outdoor unit, especially during warmer months, can point to refrigerant imbalances or airflow problems.
Even minor changes can signal deeper problems. If you’ve noticed anything unusual, it’s a smart move to have it checked early. Contact the team at Carini for a detailed inspection and fast, reliable service to get things running right again.
What to Expect When Budgeting for a Ductless HVAC System
Pricing varies depending on size, number of zones, and the model you choose. Here’s a general guideline that does not include Rebates:
| System Type | Typical Installed Price Range |
|---|---|
| Single-Zone Mini Split | $3,000 – $8,000+ |
| Multi-Zone (2-3 Indoor Units) | $5,000 – $12,000+ |
| Larger Multi-Zone (4+ Units) | $10,000 – $20,000+ |
Rebates and Tax Credits
Installing an energy-efficient ductless system may qualify you for rebates or tax incentives through programs like TECH Clean California and HEEHRA (High-Efficiency Electric Home Rebate Act).
*Funding and program availability change frequently. Call Carini today to check the current rebate status and maximize your savings*
Get Help With Your Duct-Free System
Carini Home Services is trusted by homeowners for reliable, high-quality, duct-free heating and cooling solutions. We’re known for our attention to detail, expert installations, and commitment to doing the job right every time. Our team delivers personalized recommendations, straightforward estimates, and flexible financing with low monthly payments.
Whether you need a repair, system upgrade, or a full installation, we’re here to help you stay comfortable year-round. If you’ve been searching for a mini split service near me, we’re already nearby and ready to help. Reach out today for a free quote and discover what it’s like to work with a team that truly puts your comfort first.
10 Year Warranty
Types of Mini Split Air Handlers
Additional Information
Ductless cooling and heating systems are becoming increasingly popular in San Diego thanks to their extremely flexible design and exceptional energy efficiency. Mounted ductless units are an excellent solution for tight spaces and structures where a different temperature is desired in each room – not to mention the extremely efficient heating and cooling capacity of ductless mini-split units.
Additional Information
These universal mini-splits can be mounted on the ceiling or floor, which provides maximum flexibility in tight spaces. Universal floor/ceiling mini-splits provide powerful heating and cooling that is effective in both residential and commercial environments. They’re great for garages, room additions, and offices as well as for retail and light industrial settings.
Universal floor and ceiling systems are especially popular in the the older homes of San Diego, California where options are limited for installing central air conditioning systems.
Additional Information
Large capacity ceiling-mounted systems are attractive, super quiet, and an extremely efficient solution for heating and cooling spacious areas or high customer traffic zones where plenty of fresh air is a priority. You can see ceiling-mounted mini-split systems installed in businesses all around San Diego.
Additional Information
Ductless mini-split floor mount systems are a perfect solution when it’s time to upgrade from traditional floor radiators. Ductless floor units can be installed in the same position as an old radiator, but they occupy much less space. Floor mini-splits are also perfect for rooms with a lack of free wall space like kitchens and rooms with large windows. Mini-split floor units fit under most standard-sized windows and are twice as efficient as a radiator at half the size. Floor-mounted mini-splits are perfect for historic homes in San Diego.
These types of units are typically mounted on a wall near floor level. Multiflow vanes blow air upward and downward simultaneously for maximum even air coverage – while also heating or cooling rooms much faster than floor mounted units from other manufacturers.
The floor unit is available in multiple capacities and is Energy Star Certified, which means that these systems are at least 15% more energy efficient than government standards. They can be controlled by wireless remotes, and their flat, stylish design looks great in any room.
To accommodate various installation set-ups, a two-block structure includes optional wall recessing capabilities. And its symmetrical design results in a low profile air inlet and removable base section for easy cleaning and maintenance.
Slim Duct
Additional Information
Slim duct mini-split systems are ideal for heating and cooling diminutive rooms and areas like small offices, workspaces, and utility rooms. Slim duct mini-splits are probably the most compact and quiet heating/cooling unit available. And when the outdoor temperature is perfect – which is often the case in San Diego – you can use the slim duct system to intake fresh air into interior rooms. The unit can be easily concealed in a wall or ceiling.
Slim duct mini-split systems are ideal for heating and cooling rooms and areas in homes or offices – like small offices, workspaces, and utility rooms. Slim duct mini-splits are probably the most compact and quiet heating/cooling unit available. And when the outdoor temperature is perfect – which is often the case in San Diego – you can use the slim duct system to intake fresh air into interior rooms. The unit can be easily concealed in a wall or ceiling.
Slim duct-type mini split systems are extremely versatile. To the home or business owner, they look just like a traditional heating and air conditioning system with familiar vents or “registers.” They can be installed in attics above rooms or in crawl spaces under structures.
Slim duct systems can also be combined in “zones” at a home or business, with wall units, cassette systems and other combinations of air handlers, all connected to a single outdoor condensing unit. Each zone can be turned on or off independently, maximizing energy usage.
Additional Information
Ductless compact cassette mini-split systems are remarkably discreet. In most cases, compact cassettes units are mounted flush with the surface, often the ceiling – so that no space or light is sacrificed in the room. Compact cassette mini-split units are designed to a standard size specification and fit perfectly in most standard ceiling panel configurations – just like we recognize from office spaces around San Diego.
Ductless mini-split cassette units are an ideal solution for heating and cooling large rooms or rooms with cold/hot spots that also have limited floor or wall space. Cassettes can be mounted in standard drop ceilings or in a regular ceiling when sufficient attic space above is available. Mini-split cassettes are an outstanding solution for both commercial and residential applications in San Diego.
Ceiling cassettes are exceptionally versatile, finding their way into both consumer and commercial installations. We’ve seen them complementing dens, kitchens, bathrooms, granny flats, nurseries, man caves and craft rooms with a variety of home design styles; and we have two side by side mini split ceiling cassettes in our office conference room. When the room holds a few people, one unit can cool or heat the entire room; and when the room is packed with lots of heat producing bodies, we’ll switch on the second unit to accommodate however many people are in the room.
It’s simple to set up mini split ceiling cassettes, by adjusting vents with a handheld remote control. Vents can be adjusted on all four sides to direct the airflow to exactly where it’s required. Each unit comes with advanced filtration options to create cleaner and fresher air in any room where it is installed. And besides using the simple remote control, you can remotely monitor cassette units from a smartphone or tablet.
Additional Information
Ductless mini-split cassette units are an ideal solution for heating and cooling large rooms or rooms with cold/hot spots that also have limited floor or wall space. Cassettes can be mounted in standard drop ceilings or in a regular ceiling when sufficient attic space above is available. Mini-split cassettes are an outstanding solution for both commercial and residential applications in San Diego.
Check out the other types of ductless mini split heating and cooling systems we offer.
Carini Home Services is San Diego’s premier mini split dealer and installer.
Additional Information
Ductless multi-zone mini-split heating/cooling systems allow maximum customization of climate control. With a multi-zone system it is possible to precisely control temperature in each room based on what is needed in a particular moment. Save heating or cooling energy when the room is not occupied. Multi-zone systems are ideal for multiple rooms that have different climate control requirements at different times. A perfect solution for San Diego.
Ductless multi-zone mini-split heating/cooling systems allow maximum customization of climate control in homes and office environments. With a multi-zone system, it is possible to precisely control temperature in each room based on what is needed in a particular moment or based on the number of occupants that could be in a particular room. When the room is not occupied, the heating or cooling can be reduced to save energy. Multi-zone systems are ideal for multiple rooms that have different climate control requirements at different times, making a multi-zone mini split a perfect solution for San Diego.
Depending on the size of a home, office or other commercial application, multi-zone mini splits typically employ one or more outdoor condenser units that deliver both heating and air conditioning without the need for a separate furnace. The outdoor unit or units can be placed alongside a house, on roofs or patios, or placed on special outdoor shelving that can be attached to the outdoor walls of a structure. Each room then can have the same or a combination of different indoor “air handlers,” that distribute the warm or cool air in each room, without the need for traditional ducting. For example, applications can be configured to use wall units in some rooms, ceiling cassettes in another, and concealed “duct-type” units in other rooms. Each of these room air handlers operate off one or more of the outdoor units, and can be controlled individually or in zones that are designed by our Design Specialists for maximum energy savings and peak efficiency.
Here is an educational video on the features and benefits of multi-zone ductless mini splits from Mitsubishi:
Multi-Zone (4-8)
Additional Information
Ductless multi-zone mini-split heating/cooling systems allow maximum customization of climate control. With a multi-zone system it is possible to precisely control temperature in each room based on what is needed in a particular moment. Save heating or cooling energy when the room is not occupied. Multi-zone systems are ideal for multiple rooms that have different climate control requirements at different times. A perfect solution for San Diego.
Ductless multi-zone mini-split heating/cooling systems allow maximum customization of climate control in homes and office environments. With a multi-zone system, it is possible to precisely control temperature in each room based on what is needed in a particular moment or based on the number of occupants that could be in a particular room. When the room is not occupied, the heating or cooling can be reduced to save energy. Multi-zone systems are ideal for multiple rooms that have different climate control requirements at different times, making a multi-zone mini split a perfect solution for San Diego.
Depending on the size of a home, office or other commercial application, multi-zone mini splits typically employ one or more outdoor condenser units that deliver both heating and air conditioning without the need for a separate furnace. The outdoor unit or units can be placed alongside a house, on roofs or patios, or placed on special outdoor shelving that can be attached to the outdoor walls of a structure. Each room then can have the same or a combination of different indoor “air handlers,” that distribute the warm or cool air in each room, without the need for traditional ducting. For example, applications can be configured to use wall units in some rooms, ceiling cassettes in another, and concealed “duct-type” units in other rooms. Each of these room air handlers operate off one or more of the outdoor units, and can be controlled individually or in zones that are designed by our Design Specialists for maximum energy savings and peak efficiency.
Areas We Cover for Zoned HVAC Solutions
At Carini, we proudly install, maintain, and repair across San Diego County, including the following cities: San Diego, La Mesa, Chula Vista, El Cajon, Carlsbad, Oceanside, Encinitas, Santee, and surrounding communities!
Frequently Asked Questions
What is a ductless system?v
This type of HVAC setup uses an outdoor unit paired with one or more indoor air handlers to provide heating and cooling without the need for traditional ductwork. Each zone operates independently for targeted temperature control.
Are duct-free systems energy efficient?
Yes. These systems are known for their high efficiency. Because they allow you to condition only the rooms in use, they help reduce wasted energy and can significantly lower utility costs.
Can I install one in just a single room?v
Absolutely. These systems are ideal for spaces like converted garages, home offices, ADUs, or additions. You can also expand them into multi-zone setups to cover an entire home.
How long do these systems last?
Most units last 15 to 20 years and require routine maintenance. Regular filter changes, annual tune-ups, and deep cleanings can help extend their lifespan and maintain performance.
Do they provide both heating and cooling?
Yes. Most models are heat pump systems, meaning they offer year-round climate control from a single unit, cooling in the summer and heating during colder months.
Are rebates or tax credits available?
In many cases, yes. Carini Home Services can help determine eligibility for current utility rebates and federal incentive programs when installing high-efficiency, ductless HVAC systems.
Where can I find ductless service near me?
If you’re looking for fast, local help with ductless heating and cooling, Carini Home Services is just a call away. Our technicians provide responsive support for everything from new installations to same-day repairs right in your neighborhood.
Do ductless systems work well in older homes?
Yes. These systems are especially useful in vintage or historic homes that lack existing ductwork. Their compact design allows for efficient climate control without invasive renovations or major structural changes.
Can I control each room separately with a duct-free system?
Absolutely. Zoned systems let you adjust the temperature in individual rooms or areas so you can keep one space warm while cooling another. This improves comfort and reduces wasted energy in unused parts of the home.
What maintenance does a ductless HVAC system need?
Routine maintenance includes cleaning or replacing filters, inspecting electrical components, checking refrigerant levels, and cleaning coils and fans. Scheduling annual tune-ups or deep cleanings helps extend the system’s life and keeps it running efficiently year-round.
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- Parts & Labor Warranty
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Wells Fargo financing is subject to credit approval.