When it's time for mini-split replacement in Burlingame, CA, Plum HVAC provides a comprehensive overview of when replacement is smarter than repair, and how to select, size, and install an energy-efficient system. We handle removal and disposal of old equipment, detail typical timelines, and outline the scope of work, including electrical upgrades and refrigerant handling.

Our team also explains available rebates and financing, warranty expectations, and post-installation performance verification to ensure reliable comfort. We emphasize corrosion resistance for Bay Area conditions and the long-term value of professional installation by Plum HVAC.

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Mini Split Replacement in Burlingame, CA

Replacing a failing or outdated mini split in Burlingame homes is about more than comfort. It is a long-term investment in energy savings, indoor air quality, and reliable year-round performance in a coastal climate. This page explains when replacement is the smarter choice, how to choose and size a new energy-efficient mini split, what removal and installation involve, available rebate and financing options, warranty expectations, and the post-installation checks that confirm the system is working as promised.

Why replace rather than repair

Choose replacement when the system’s condition or economics make repair impractical. Common signs a unit should be replaced instead of repaired include:

Age over 10 to 15 years and frequent breakdowns
Compressor failure or burned-out compressor motor
Refrigerant type issues such as R-22 systems that are costly or impossible to recharge
Repeated refrigerant leaks or nonrepairable evaporator/condenser damage
Significant capacity loss or poor efficiency leading to high energy bills
Multiple component failures (control board, inverter, sensors) in short succession
Rust or corrosion on outdoor units from coastal salt air common near the Bay
Repair cost approaching a large fraction of replacement cost

If you are seeing these issues in Burlingame, replacement often yields better comfort, lower maintenance, and improved efficiency.

Selecting and sizing an energy-efficient mini split

Proper equipment selection and sizing is the most important step for reliable performance and efficiency in Burlingame homes. Key guidance:

Start with a professional load calculation (Manual J or equivalent). Account for local factors like mild coastal temperatures, sun exposure on west- or south-facing facades, window area, insulation, and typical Burlingame home layouts.
Prioritize inverter-driven, variable-speed compressors for efficient part-load performance and better humidity control. Look for high SEER2 and HSPF ratings and reputable manufacturer AHRI ratings.
Avoid oversizing. Oversized systems short-cycle, reduce dehumidification, and waste energy. Right-sizing produces more consistent comfort and lower operating costs.
Choose corrosion-resistant options for outdoor units. Burlingame’s proximity to San Francisco Bay can mean salt and fog that shorten equipment life. Look for protective coatings, stainless fasteners, and raised mounts.
Decide between single-zone and multi-zone systems based on room usage. Multi-zone systems can heat and cool multiple rooms independently, improving comfort in older Burlingame homes with different usage patterns.
Consider sound ratings for indoor units if bedrooms face common noise sources. Lower sone ratings matter for restful evenings.

A tailored sizing and selection process prevents future issues and maximizes rebates tied to specific efficiency levels.

Removal and disposal of old equipment

Safe, code-compliant removal is required:

Refrigerant recovery is performed per EPA regulations. Refrigerant must be captured and disposed of properly; R-22 units often have special handling requirements.
Salvage and recycling of metal components, copper, and plastics is arranged. Proper disposal avoids local code violations and environmental harm.
Permits and documentation are typically required in California. Replacement jobs often need an electrical or mechanical permit and final inspection to meet local Burlingame and state codes.

Typical installation timeline and scope of work

Replacement projects vary by complexity. Typical schedule:

Pre-install assessment and measurement: 1 visit for load calculation and site planning.
Equipment lead time: days to a few weeks depending on model availability and coatings for coastal use.
Installation time: generally 1 to 3 days for a single-zone replacement; multi-zone or complex retrofits can take longer.

Scope of work includes:

Site preparation and temporary power shutdown
Recovery and legal disposal of existing refrigerant
Removal of old indoor and outdoor units
Mounting of new outdoor condenser and indoor air handlers (wall, floor, ceiling cassette, or ducted unit)
Electrical upgrade or new circuit wiring as needed to meet local code and manufacturer specifications
Replacement or upgrade of refrigerant lines, proper insulation, and condensate drain lines
Brazing or approved fittings, vacuuming lines, pressure testing, and correct refrigerant charging
Controls and thermostat setup, testing of zones, and commissioning

Electrical panel upgrades, stair or crane access for tight spaces, or structural mounting modifications can extend the timeline.

Rebate and financing assistance

Many Burlingame homeowners can reduce out-of-pocket costs through incentives:

Utility and state programs frequently offer rebates for high-efficiency heat-pump mini splits that meet specific efficiency tiers. Documentation typically required includes equipment model numbers, AHRI certificate, invoice, and permit.
Federal or state clean energy incentives may apply to qualifying heat pump installations.
Financing options such as energy-focused loan programs, PACE, or manufacturer financing are commonly available to spread costs over time.When evaluating offers, confirm eligibility details, required paperwork, and whether equipment registration or pre-approval is needed.

Warranties and what they cover

Warranties protect your investment but differ by product and installer:

Manufacturer warranties typically cover compressors and major components for 5 to 10 years, sometimes longer with registration.
Parts warranties vary; some parts are covered for shorter terms.
Installers often provide workmanship warranties for a defined period, commonly 1 to 5 years.
Warranty validity often depends on professional installation, permit compliance, and scheduled maintenance. Keep installation records and register equipment per manufacturer instructions.

Post-installation performance verification and maintenance

A thorough commissioning process confirms the system meets expectations:

Electrical safety checks and correct breaker sizing
Verification of correct refrigerant charge, line pressure tests, and leak checks
Measurement of supply and return temperatures and airflow to confirm capacity
Calibration of thermostats, controls, and zone settings
Noise checks for indoor and outdoor units
Demonstration of basic operation and maintenance procedures, such as filter access and condensate drain inspection

Expect a 24 to 72 hour run-in period for refrigerant balancing and consistent comfort. Regular maintenance preserves efficiency: clean or replace filters seasonally, schedule annual inspections, and keep outdoor units clear of vegetation and debris.

Benefits for Burlingame homeowners

Replacing an outdated mini split in Burlingame yields:

Better, more consistent comfort and humidity control in a coastal climate
Lower energy bills with modern inverter-driven systems
Reduced repair frequency and improved reliability
Extended equipment life when corrosion protection is selected for bay-area conditions
Eligibility for local and state energy incentives that favor high-efficiency heat pumps

A properly sized, professionally installed mini split replacement provides cleaner, quieter, and more efficient heating and cooling tailored to Burlingame’s mild but variable coastal climate.

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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