Ductless mini-split installation
Cool one room properlywithout touching your ducts.
A garage you cannot use from May to October. An ADU that needs its own heating and cooling. A back bedroom that has never been comfortable. Ductless solves each of those without asking your existing system to do something it was never sized for.
No ductwork needed Heats and cools Free quotes
What people actually use these for
Six situations that come up constantly in Fresno, and every one of them is a space your central system was never designed to condition.
The garage
Unusable from May to October, which is exactly when you want to be out there. Workshop, gym, hobby space or somewhere to work on a car without losing an afternoon to the heat.
An ADU or casita
A separate dwelling needs its own conditioning and its own controls. Ductless is the standard answer, and it keeps the utility picture clean when someone else is living there.
A home office
A converted bedroom with a computer, a monitor and a person in it all day generates real heat that the rest of the house does not. Independent control matters more here than anywhere.
An addition or bonus room
Space added after the original system was sized. Extending the ducts asks equipment already at its limit to cover more square footage, which usually makes the whole house worse.
The one room that never gets cool
West facing, over the garage, at the end of the duct run. Sometimes the answer is airflow correction. Sometimes it is a small dedicated system for that room. More on hot and cold rooms.
A house with no ducts at all
Older Fresno homes with wall furnaces, floor furnaces or evaporative cooling. Ductless brings real air conditioning without opening walls or losing closet space to a duct chase.
Honestly, compared to the alternatives
Ductless is not always the right answer and it is not always the cheapest. Here is where each option genuinely sits, including the one we would talk you out of.
A portable air conditioner
AvoidThe one we would steer you away from. A portable unit has to vent hot air through a window hose, and to do that it pulls already-cooled air out of the room and pushes it outside. You are cooling the room and simultaneously creating negative pressure that drags hot outside air back in. They are loud, they need emptying, and in a Fresno garage they lose the fight badly.
A window unit
Cheap, worksGenuinely the lowest-cost route and it does cool. The trade-offs are real though: you lose a window, it is noticeably loud, efficiency is well below a modern ductless system, most models do not heat, and it is a security consideration on a garage or ADU. If budget is the binding constraint, it is not a stupid choice and we will say so.
Extending your existing ducts
Often backfiresThe intuitive answer and frequently the wrong one. Your central system was sized for the square footage it had. Adding a garage or an addition to it means the same equipment now serves more house, so everywhere gets a little worse and the new space still does not get comfortable. Worth doing only when a load calculation shows genuine spare capacity. How sizing works.
A ductless mini-split
Usually the answerIndependent of your existing system, so nothing else in the house is affected. Highly efficient because there are no ducts to lose air through. Quiet, since the compressor is outside. It heats as well as cools, which matters in a garage in January. And it has its own thermostat, so the space is conditioned when you are using it and not when you are not.
Growing fast in Fresno
ADUs and casitas
Accessory dwelling units have become a serious part of the Fresno housing picture, and every one of them needs heating and cooling that works independently of the main house.
Ductless is close to the default for this. A single outdoor unit and one or two indoor heads condition the whole unit, with no space lost to ductwork in a building where square footage is precious. Heat pump models handle both seasons, which suits all-electric ADUs.
We work on both new ADU builds and garage conversions, and we handle the permit side as part of the job rather than leaving it with you.
What ADU work involves
- A load calculation for the unit itself, not a guess based on square footage or what the main house has.
- Independent controls so the occupant manages their own comfort and their own consumption.
- Electrical capacity confirmed before anything is ordered, since ADU panels are frequently tight.
- Permit and inspection handled, including the energy compliance documentation. More on permits.
- Coordination with your builder so the line set and condensate routing are planned rather than improvised at the end.
Worth being realistic about
Garages need a conversation before a quote
Cooling a Fresno garage is entirely achievable, and it is the one application where we will ask questions before giving you a number. A typical garage has an uninsulated roll-up door, little or no wall insulation, an attic above it that hits 150 degrees, and a large uninsulated slab underneath.
Put a mini-split into that without addressing any of it and you get a unit running flat out, holding a temperature you are not thrilled with, on an electric bill you are less thrilled with.
Insulating the door and the walls first will usually let you fit a smaller, cheaper system that performs better and costs less to run. That is not us avoiding the work — it is the difference between you being pleased with this in August and you being disappointed.
In a garage, insulation buys more comfort per dollar than tonnage does. Every time.
How the installation actually goes
Usually a single day for one zone. Far less disruptive than people expect, and nothing gets opened up beyond one small penetration.
1
Load calculation and placement
We measure the space, calculate what it actually needs, and agree where the indoor head and the outdoor unit go. Placement affects both performance and how it looks, so we settle it with you rather than deciding on the day.
2
Mounting and a single penetration
The indoor head goes on a bracket, and one three-inch hole through the wall carries the refrigerant lines, the control cable and the condensate drain. That is the extent of the construction work.
3
Line set, flares and electrical
Lines run to the outdoor unit inside a cover, flares cut and torqued to the manufacturer's specification rather than by feel, and a dedicated circuit connected. This step is where mini-split installations are made or ruined.
4
Vacuum, charge and commission
A deep vacuum verified with a micron gauge and held to prove it, then the charge released or added to specification. We run it, measure it, show you the controls and clean up.
Step three is the one that matters. Most ductless failures we get called to are flare joints cut poorly or torqued by guesswork at installation, leaking slowly for years afterwards. It takes a few extra minutes to do properly and it is the difference between a system that runs for fifteen years and one you keep recharging. More on what goes wrong.
What it costs
Published, because you are trying to plan
A single-zone ductless installation in the Fresno area typically falls in the range below, including equipment, installation, permit and commissioning.
- Capacity — a small bedroom needs far less than a two-car garage.
- Line set length — how far the indoor head sits from where the outdoor unit can go.
- Electrical work — whether a dedicated circuit can be run easily or the panel needs attention.
- Equipment tier — efficiency rating, brand, and whether you want heating performance in winter.
- Multi-zone — additional indoor heads on one outdoor unit are quoted per zone after the first.
Multi-zone systems are quoted individually because the outdoor unit has to be matched to the combined load rather than added up room by room. Financing is available on installations.
Installation questions
How much does mini-split installation cost in Fresno?
A single-zone installation typically runs $4,000 to $7,500 including equipment, installation, permit and commissioning. The main variables are the capacity needed, how far the indoor head sits from the outdoor unit, whether a dedicated electrical circuit runs easily, and the efficiency tier of the equipment. Multi-zone systems are quoted individually.
Can a mini-split cool my garage in Fresno?
Yes, and it is one of the most common reasons people call us about ductless. The honest caveat is that a typical garage has an uninsulated roll-up door, minimal wall insulation and a very hot attic above it. Insulating the door and walls first usually lets you fit a smaller and cheaper system that performs better and costs less to run. We will always raise that before quoting.
Do mini-splits provide heat as well as cooling?
Most do. Heat pump models reverse the refrigerant flow to heat, and they handle Fresno winters comfortably. That matters for a garage or workshop you want to use in January, and it is why ductless is generally the better choice than a window unit for spaces you use year-round.
How long does installation take?
Usually a single day for one zone. Multi-zone systems and difficult line set routing take longer. The construction work is minimal — one three-inch penetration through the wall carries the refrigerant lines, control cable and condensate drain.
Do I need a permit for a mini-split in Fresno?
Yes. Installing new HVAC equipment requires a mechanical permit, and where a new circuit is involved there are electrical requirements too. We handle the permit and inspection as part of the installation rather than leaving it with you. More on permits and code compliance.
Is a mini-split better than extending my existing ductwork?
Usually, and here is why. Your central system was sized for the square footage it originally served. Extending ducts to a garage or an addition means the same equipment now covers more house, so everywhere gets slightly worse and the new space still struggles. Extending ducts only makes sense when a load calculation shows genuine spare capacity, which is less common than people assume.
How many indoor heads can one outdoor unit run?
It depends on the outdoor unit, with common residential models supporting somewhere between two and five indoor heads. The outdoor unit has to be matched to the combined load rather than to a simple count of rooms, which is why multi-zone systems get quoted individually rather than priced per head.
Tell us about the space
Free quote, a proper load calculation, and an honest answer about whether ductless is the right call for what you are trying to do.
Prices shown are typical ranges for the Fresno area and are not quotes. Your firm price follows an on-site assessment and load calculation. Permit and inspection are included. Financing is provided by third-party lenders subject to their approval and terms. California Heating & AC Repair is operated by Craftline Renovations, Inc. · CSLB License #999179 · Licensed and insured.