Our Los Gatos mini split installation services provide comprehensive guidance for residential systems, starting with site assessments and load calculations to ensure the right capacity. We help homeowners select single- or multi-zone systems and recommend the best indoor head styles. Our step-by-step installation process includes mounting, line runs, electrical connections, testing, refrigerant balancing, and concludes with commissioning and performance verification. Post-install support covers warranty details, local permit compliance, and ongoing maintenance options, ensuring efficient operation and long-term reliability for every home.

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Mini Split Installation in Los Gatos, CA

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Mini Split Installation in Los Gatos, CA

Installing a ductless mini-split system in Los Gatos, CA provides efficient, flexible heating and cooling that fits the varied needs of valley and hillside homes. Whether you are retrofitting an older bungalow or adding climate control to a sunroom, a professional mini split installation in Los Gatos, CA ensures proper sizing, permit compliance, quiet operation, and long-term reliability. This page explains the full installation service: how we assess your home, select equipment, complete the install, test performance, and support you after the work is done.

Why choose a ductless mini-split for Los Gatos homes

Los Gatos summers can be warm and dry while winters are mild. Mini-splits offer high seasonal efficiency and effective zoned heating through heat pump technology, reducing energy use compared with many space heaters or window units.
Many Los Gatos homes have limited or no ductwork. Ductless systems avoid costly duct modification, preserve living space, and reduce the loss of conditioned air.
Hillside and multi-level homes benefit from zoning. Individual indoor units provide tailored comfort for bedrooms, home offices, and additions where temperatures vary by elevation and exposure.

Common mini split installation issues in Los Gatos, CA

Incorrect sizing: an undersized system struggles on hot days; oversized equipment cycles too frequently and wastes energy.
Poor indoor unit placement: wrong placement leads to uneven comfort, short-cycling, or drafts.
Long refrigerant line runs in hillside properties can complicate installation and require special line-sizing and charging procedures.
Electrical capacity: older homes may need panel upgrades or a dedicated circuit to meet modern mini-split electrical code requirements.
Permit and code compliance: California energy codes and local permit processes require documentation and sometimes additional efficiency measures.

Site assessment and load calculations

A quality mini split installation begins with a thorough site assessment and load calculation. We evaluate:

Square footage, ceiling height, insulation levels, window orientation and shading, and occupancy patterns.
Local climate influences in Los Gatos, such as sun exposure from the hills, typical summer peak temperatures, and any microclimates on your property.
Existing electrical capacity and potential mounting locations for indoor and outdoor units.

Load calculations follow industry standards (a room-by-room heat gain and loss analysis) to determine the correct capacity for each zone. Proper sizing prevents common problems like short cycling and insufficient comfort.

Unit selection and zoning options

Selecting the right system involves more than capacity:

Single-zone vs multi-zone systems: single-zone is ideal for one room or addition; multi-zone serves several rooms with one outdoor unit and multiple indoor heads.
Indoor head styles: wall-mounted, low-profile floor units, ceiling cassette, or slim ducted units — chosen based on aesthetics, ceiling space, and airflow needs.
Noise considerations: outdoor condenser placement and low-noise models help meet neighbor-friendly operation in residential neighborhoods.
Efficiency and controls: look for high SEER/HSPF ratings and smart controls or Wi-Fi thermostats to optimize energy use.

Step-by-step installation procedures

A professional mini split installation in Los Gatos, CA typically follows these steps:

Finalize placement: mark locations for indoor heads and outdoor condenser to balance performance, aesthetics, and access.
Mount indoor units: install wall brackets or supports, cut a small 2 to 3 inch hole through the wall or run lines through attic or crawlspaces as required.
Run refrigerant lines and condensate drain: route insulated copper lines, electrical conduit, and a condensate drain with proper slope to an approved disposal point. For long runs, follow manufacturer limits and specifications.
Outdoor unit installation: level and secure the condenser on a pad, brackets, or rooftop support. Ensure clearance for airflow and service access.
Electrical connection: install a dedicated circuit and disconnect per code, connect wiring between indoor and outdoor units, and tie into your home electrical system as required.
Pressure testing and evacuation: perform a nitrogen pressure test to check for leaks, then evacuate lines to a deep vacuum to remove moisture and air.
Refrigerant charging and balancing: charge refrigerant according to line length and manufacturer guidelines, and set airflow and noise levels for indoor heads.

Permits, commissioning, and performance testing

Permits are handled as required by the Town of Los Gatos and Santa Clara County building codes. Proper permits document compliance with energy code, electrical work, and safe refrigerant handling.

Commissioning and performance testing include:

Leak testing and verification of correct refrigerant charge.
Electrical checks: correct breaker sizing, tightness of terminations, and ground fault testing where applicable.
Airflow and temperature split verification: measure supply and return temps to confirm capacity and balance.
Condensate flow check and secondary drain provisions.
Operational run-through for heating and cooling modes, remote/app configuration, and homeowner system orientation.

Typical project timelines and cleanup practices

Single-zone installations commonly take 1 day from start to finish once assessments and permits are in place.
Multi-zone or complex installs with line set fishing, panel upgrades, or roof work can take 2 to 4 days or more.
Good installation practice includes protecting floors and landscaping, containing debris, removing packaging and old equipment, and vacuuming or sweeping work areas. Small penetrations are sealed; larger cosmetic repairs are discussed up front.

Post-installation support and warranties

After commissioning, homeowners receive system orientation: how to use remotes/apps, recommended setpoints, and maintenance basics. Manufacturer warranties typically cover parts and compressors; workmanship warranties cover installation-related issues for a defined period. Recommended maintenance includes regular filter cleaning, annual system checks, and refrigerant level inspections to preserve efficiency and extend service life.

Benefits and long-term considerations for Los Gatos homeowners

A properly installed mini split system provides:

Zoned, quiet comfort that adapts to the varied exposures and microclimates common in Los Gatos.
Improved energy efficiency compared with many space heaters or window units, and reduced load on central systems.
Flexible solutions for additions, historic homes without ductwork, and rooms with unusual layouts.

Choosing professional mini split installation in Los Gatos, CA reduces the risk of common problems and ensures your system performs reliably, meets code, and delivers the expected comfort and efficiency over time. Regular maintenance and proper commissioning are key to maximizing the system lifespan and maintaining consistent performance in your home.

testimonials

hear what our satisfied clients have to say

5.0

We found Plum HVAC in 2024 after spending more than 2 months searching and comparing estimates. The owner Sam gave us a very competitive price for a Mitsubishi mini-split and the installation went off without a hitch. Our experience was so positive that we later requested their services twice more to also install A/Cs for our 2 other rooms. Their technician, Jake, led our installations each time and we were very impressed by their professionalism and quality of work. Now 1 year in and we could not be any happier, nor have we encountered any issues with our models.

Jesse Y.

5.0

Sam of Plum HVAC, responded to our Heat Pump installation request promptly and provided a very competitive estimate after an onsite visit. He was very flexible and patient to answer and explain our questions. After we signed the contract, he and his team of 4 worked very hard to deliver and install the whole Heat Pump system on time with good quality. I am particularly impressed by their problem solving skills to overcome different connection challenges for the attic installation. Each day before they started, they covered the floors with protection blankets and cleaned after they were done for the day. They also revised the drainage and electric work per the city inspection guidance. Sam and his team were professional and honest so we highly recommend Plum HVAC to any customers who need HVAC work done for their houses.

Chunshi C.

5.0

We needed to install a mini-split in a backyard unit. Sam and his team helped with this, and they did a fantastic job. Sam visited our place and clearly explained to me what needed to be done, and offered a great price. He scheduled the job for a few days later, and his team performed the job with extraordinary quality. Later, I noticed a minor issue and reached out to them. Sam helped me to fix the issue on a second visit by his team later in the week, providing top-notch customer service. I will work with them in the future for my HVAC jobs, and highly recommend them given their excellent work quality and customer service.

Majid J.

5.0

I reached out to 4 companies for mini split quotes; Plum HVAC pricing came in the lowest. Beyond that, Sam was very knowledgeable and kind during the in home consultation. He offered a quote in person, & stuck by it. They removed our old furnace, and installed a two head mini split in our two story townhouse. The work as you can see is very clean! The guys who installed it were very fun & professional. Sam & his team were communicative the whole way through including the permitting process. They took roughly one full day for install, which was very fast! Including removal & disposal of our old furnace. Natalie was very helpful throughout the Bayren Rebate process & always available for any questions! This system has changed our lives, wish we would have gotten it done sooner! It’s way better than we could have imagined.

Bobby R.

5.0

Plum HVAC exceeded my expectations in every way. Sam and his installer team were not only professional but also incredibly responsible throughout the entire process. They provided top-notch service at a very reasonable price, which is hard to come by these days. I highly recommend Plum HVAC to anyone looking for quality HVAC services. You won't be disappointed!

A Chui

5.0

I recently engaged Plum HVAC to install two mini-split units at my residence, and I'm thrilled with the outcome.Throughout the entire process, from the initial consultation to the project's completion, Plum HVAC showcased professionalism and expertise. The technician, Sam, arrived promptly and conducted a comprehensive assessment of my HVAC system. Sam took the time to thoroughly explain the technicians' tasks, the estimated duration of the project, and provided transparent pricing options.

Romero J.

5.0

Wonderful experience with Plum HVAC on a heat pump installation! I checked several companies, compared their recommendations, timelines, reputations and prices.Sam, the owner, was very professional and has almost 2 decades of experience in HVAC. When I asked dumb questions, he answered most graciously. And when I noted that some companies we queried said we could get away WITHOUT replacing our original ductwork from 1965, he gave us his honest opinion why that wasn't a good idea. (Hubby remembered later that people who worked in our attic adding insulation told us there were lots of duct leaks.)

Marlene S.

5.0

I called 8 different HVAC companies for quotes for a heat pump heating/ac system because I want to save money by switching from a forced air gas furnace to an electric heat pump system which will give me both heating and air conditioning. In addition my old furnace (circa 1991) was way oversized for my home and the air coming out too noisy. The New heat pump system is quieter and more efficient. Back to the quotes for the system, all the other 7 companies sent a salesperson/advisor to give the quote. Sam, the owner of Plum HVAC came our to give the quote. He was quick with his quote and was very knowledgeable. He didn't try to upsell me on anything and have the lowest quote of them all. His price was 60% less than the highest quote and 15% lower than the next second lowest quote.

Michael C.

5.0

Plum HVAC is an extremely professional, knowledgeable, and an established company to hire. I highly recommend Plum HVAC! Sam and his crew did a wonderful job. Sam worked with my schedule and his crew had completed the job with ease.

Blake

5.0

Sam was one of the most professional business owners I had the chance to meet over the past few years and I'm so happy I trusted him to install our new A/C unit.- He showed up on time- He was transparent (and reasonable) regarding pricing- He offered 2-3 options- His crew did a very clean/thorough jobWhat I loved the most though, was the fact he was very easy to communicate with. I would definitely use him again and recommend him to our neighbors/friends.

Bruno L.

5.0

We recently had a complicated Bryant Evolution dual fuel system with variable speed and zoning installed in our home by Plum HVAC, and we are very pleased! The team also changed the entire crawl space ducting, ensuring a comprehensive upgrade. The price was fair, and the team was always on time and easy to contact. Sam Mousavi, the head of the team, paid great attention to detail and demonstrated a strong understanding of systems. His expertise in HVAC systems and his friendly character made us feel comfortable throughout the process. We highly recommend Plum HVAC for their professionalism and excellent service.

Amirali B.

5.0

I cannot say enough about Plum HVAC, who replaced my aging heater furnace, and in particular Sam. Sam was very highly recommended by my sister, who replaced her furnace and added air conditioning.First, they gave me a good deal for a 2-stage, at the same cost as the lowest bid for a 1-stage. The other bids were dancing around some gas line work made by previous owners.

Kumar S.

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