Los Altos Hills, CA residents can rely on Plum HVAC as their local partner for end-to-end comfort, efficiency, and air quality. Our service-focused team offers expert installation and replacement, rapid repairs, preventive maintenance, indoor air quality improvements, and smart zoning solutions for multi-story homes. We guide you through a transparent process covering sizing, estimates, permits, and installation, followed by thorough testing and training. With our licensed technicians, warranty-backed equipment, and access to rebates, Plum HVAC ensures homeowners gain reliable performance, lower energy bills, and healthier indoor environments.

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(650) 605 – 5986

HVAC Company in Los Altos Hills, CA

Keeping your home comfortable year-round in Los Altos Hills, CA means addressing unique local challenges: warm, dry summers, cool winters, steep and spread-out properties, and seasonal smoke from regional wildfires that affects indoor air quality. A specialized HVAC Company in Los Altos Hills, CA focuses on tailored heating, cooling, and air quality solutions—from new system installation to preventive maintenance and fast repairs—so your home stays efficient, quiet, and healthy.

Why local expertise matters

Los Altos Hills homes often have large footprints, multi-level layouts, and sometimes older ductwork or custom architecture. Local installers understand:

Microclimates across the hilltops and valleys and how they affect system sizing and zoning.
Permitting and inspection requirements for Santa Clara County.
The importance of enhanced filtration and ventilation during wildfire smoke seasons.
Access and installation challenges for steep driveways, narrow sites, or historic properties.

Common HVAC problems in Los Altos Hills, CA

Homeowners in this area frequently call for:

Inconsistent temperatures between rooms or floors due to inadequate zoning or undersized systems.
Reduced cooling capacity in summer caused by low refrigerant, failing compressors, or blocked condensers.
Poor indoor air quality during fire season—smoke infiltration, odors, and elevated particulates.
Noisy or failing heat pumps and furnaces that have reached end-of-life.
Short cycling, rising energy bills, and frequent breakdowns from deferred maintenance.
Leaky or inefficient ductwork that reduces comfort and increases allergens.

Full suite of services

A complete HVAC company offering services in Los Altos Hills provides:

Installation & Replacement
System selection and professional sizing (Manual J load calculations).
Furnaces, air conditioners, heat pumps, ductless mini-splits.
Ductwork design and replacement, including insulated and sealed supply/return runs.
Thermostats, smart controls, and zoning system installation.
Repair & Diagnostics
Rapid diagnostics for AC, heat pumps, and furnaces.
Compressor, condenser, blower motor, and control board repairs.
Refrigerant leak detection and safe recovery/recharge.
Duct sealing, leak repair, and insulation fixes.
Maintenance & Tune-ups
Seasonal maintenance plans: spring AC tune-up and fall heating check.
Filter changes, coil cleaning, lubrication, safety checks, and efficiency adjustments.
Priority service and diagnostic credits for plan members.
Indoor Air Quality (IAQ)
High-efficiency filtration (MERV-rated filters), HEPA solutions, UV germicidal lights, and whole-home ventilators.
Solutions tailored for wildfire smoke—sealed systems, higher MERV filters, and mechanical ventilation strategies.
Controls & Zoning
Multi-zone solutions for multi-level homes.
Smart thermostats with remote monitoring and energy reports.
Dampers and zone control for consistent comfort and energy savings.

How we assess, plan, and install systems

A professional, transparent process helps homeowners make informed decisions.

Initial assessment
Walk-through of home layout, existing equipment, ductwork, insulation, and comfort issues.
Discussion of priorities: quiet operation, energy savings, air quality, or upfront cost.
System sizing and options
Accurate load calculations to determine capacity and efficiency requirements.
Comparison of system types: central AC vs heat pump, ducted vs ductless, single-stage vs variable-speed.
Estimates and incentives
Clear, itemized estimates explaining equipment, labor, permit costs, and estimated energy savings.
Guidance on available manufacturer warranties, local utility rebates, and financing options to lower upfront expense.
Installation steps
Pre-installation checklist and permit pull when required.
Site preparation, safe equipment staging for steep or constrained properties.
Professional installation with refrigerant evacuation and recovery, electrical connections, duct transitions, and system balancing.
Final walk-through, system programming, and operational testing.

Diagnostic and repair workflow

Repairs begin with targeted diagnostics to avoid unnecessary work:

Visual inspection and brief homeowner interview about symptoms.
System startup checks: voltages, refrigerant pressures, airflow, and control signals.
Advanced diagnostics: compressor testing, capacitor and motor checks, and combustion analysis for furnaces.
Clear repair plan with parts, expected outcomes, and warranty coverage explained.

Licensing, warranties, and safety practices

Trustworthy local HVAC firms provide:

Proper licensing and insurance for work in Los Altos Hills and Santa Clara County.
Manufacturer-backed equipment warranties and workmanship guarantees.
Assistance with rebates and financing programs to improve affordability.
COVID-19 and ongoing health safety measures: technician masking when requested, hygienic service protocols, and minimal-contact scheduling to protect residents and staff.

Energy, comfort, and indoor air quality benefits

Investing in the right HVAC solution brings measurable benefits:

Lower energy bills with correctly sized, high-efficiency systems and sealed ducts.
Enhanced comfort through zoning, variable-speed equipment, and smart controls.
Better indoor air quality during wildfire seasons with upgraded filtration and ventilator strategies.
Longer equipment life and fewer emergency repairs with regular preventive maintenance.

Seasonal maintenance checklist for Los Altos Hills homes

Spring: clean condensers, check refrigerant, inspect electrical components, verify thermostat calibration.
Summer: ensure airflow, replace filters regularly, monitor system cycling for signs of stress.
Fall: test heating system, inspect flue/chimney where applicable, clean burners or heat exchangers.
Year-round: keep mechanical areas clear, change filters, and schedule professional tune-ups annually.

A local HVAC Company in Los Altos Hills, CA understands the interplay of home design, hilly terrain, and regional air quality concerns. With proper assessment, quality installation, and routine maintenance tailored to local conditions, homeowners gain consistent comfort, improved health, and lasting equipment performance.

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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