Plum HVAC provides air conditioning installation for Redwood City homes, involving a thorough assessment of the space, Manual J load calculations, and selection of energy-efficient equipment. Our process includes site preparation, ductwork evaluation, refrigerant handling, electrical coordination, and system commissioning. Permits, warranties, and post-installation support are also managed to ensure compliance and peace of mind. Proper sizing, professional Plum HVAC workmanship, and adherence to local codes deliver reliable comfort, energy savings, and long-term system performance, helping homeowners plan confidently and choose trusted installers.

Air Conditioning Installation in Redwood City, CA

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Air Conditioning Installation in Redwood City, CA

A properly designed and installed air conditioning system does more than cool your home. In Redwood City, CA, where warm summer days and increasing heat events are common, a correctly sized and professionally installed AC keeps indoor temperatures comfortable, reduces energy costs, and protects indoor air quality. This page explains the end-to-end AC installation process you can expect for homes in Redwood City, including how we assess your home, choose the right equipment, handle permits and inspections, and support you after the system goes live.

Why a full-service AC installation matters in Redwood City

Redwood City experiences warm, sun-drenched days, with inland heat and occasional heat waves that stress undersized or poorly installed systems. Local housing stock ranges from older single-family homes with existing ductwork to modern townhomes and retrofits that require special handling. Proper installation addresses these variables so your system runs efficiently, lasts longer, and meets California energy and code requirements.

Common AC installation scenarios in Redwood City

Replacing an aging central AC or heat pump with a modern high-efficiency unit
Installing a new central system during a home remodel or addition
Converting window or portable units into a ducted central system
Adding zoned controls or upgrading to a smart thermostat for better comfort and savings
Retrofitting systems in older homes with limited attic or crawlspace access

Home assessment and load calculation

Accurate sizing starts with a detailed home assessment. We evaluate:

Square footage, ceiling heights, and room layout
Insulation levels, window types, and solar exposure
Existing ductwork condition and airflow restrictions
Occupancy patterns and comfort preferences

A professional load calculation (Manual J) determines the correct cooling capacity to avoid undersizing, which causes constant runtimes, or oversizing, which leads to short cycling and humidity problems. In Redwood City, accounting for local microclimates and sun exposure is important to get the load right.

Recommended unit selection

Choosing the right equipment balances efficiency, capacity, and home-specific constraints:

Efficiency ratings: SEER and HSPF for heat pumps. Higher SEER saves energy in longer-term operation.
System type: central air conditioner vs heat pump (heat pumps perform well in mild climates and provide both heating and cooling).
Single-stage, two-stage, or variable-speed compressors for comfort and humidity control.
Ducted vs ductless options for homes without existing ducts.
Compatibility with smart thermostats and zoning systems.

We recommend systems sized to your Manual J results and matched to compatible coils and airflow components to maintain warranty coverage and performance.

Site preparation and professional installation steps

Site prep and careful installation protect both performance and your home:

Site prep: leveling the outdoor pad, ensuring clear airflow around the condenser, and verifying electrical service and disconnects.
Ductwork inspection: sealing leaks, repairing damage, and balancing airflow to each room.
Refrigerant line installation: proper length, insulation, and support to prevent stress and heat gain.
Condensate management: installing a reliable drain and overflow protection to prevent water damage.
Electrical and safety: correct breaker size, wiring, and grounding per local code.

Installation follows manufacturer procedures and industry best practices to ensure efficiency, safety, and longevity.

System commissioning and testing

Commissioning ensures the system operates as designed. Typical tests include:

Electrical checks for correct voltage and current draw
Refrigerant charge verification and leak testing
Measured airflow (CFM) and static pressure checks
Temperature split testing to confirm proper cooling performance
Thermostat calibration and communication checks
Condensate operation and safety control testing

These steps ensure your new AC achieves rated efficiency and provides steady comfort through Redwood City’s warm periods.

Thermostat integration and zoning

Thermostat selection and setup are essential for comfort and savings:

Wi-Fi smart thermostats offer scheduling, remote control, and energy reports
Zoning systems with dampers let you control temperatures by floor or room
Multi-stage systems paired with the right thermostat improve humidity control and comfort

Integration is performed so controls communicate reliably with the outdoor unit, indoor blower, and any zoning equipment.

Permits and inspections

Redwood City and San Mateo County require permits and inspections for most HVAC installations. Common requirements include:

Building and mechanical permits for equipment replacement or new installations
Compliance with California Title 24 energy standards and local code updates
Proper documentation for refrigerant handling and disposal per current regulations

Proper permitting protects your property value and ensures the installation meets safety and energy standards.

Cleanup, documentation, and warranties

A professional installation includes thorough cleanup and clear documentation:

Jobsite cleanup and proper disposal of old equipment and refrigerant
Providing equipment model numbers, serials, and owner manuals
Warranty information: manufacturer parts and compressor warranties and labor warranties for installation work
Post-installation support details for service and maintenance

Understanding warranty coverage and recommended maintenance keeps the system protected and performing well.

Post-installation support and maintenance

Ongoing care maximizes lifespan and efficiency:

Regular maintenance: annual tune-ups for refrigerant checks, coil cleaning, and airflow verification
Filter replacement and recommended schedules based on home conditions
Duct sealing and insulation assessments, especially in older Redwood City homes
Monitoring for early signs of wear and addressing small issues before they become major repairs

A well-maintained system reduces energy bills and maintains consistent comfort.

Benefits of a professionally installed AC in Redwood City

Reliable comfort during warm weather and heat waves
Better indoor air quality and humidity control
Lower energy costs with right-sized, efficient equipment
Compliance with local codes and smoother inspections
Extended equipment life and maximized warranty protection

A comprehensive, code-compliant installation tailored to Redwood City homes ensures your investment performs as expected and provides consistent comfort year after year.

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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