Looking for a heat pump in Mountain View, CA? Plum HVAC outlines the entire installation process, from initial site assessment to final commissioning. You'll learn how to choose between air-source, ductless, and ducted systems, understand load calculations, permits, and HERS verification, and know what to expect during professional installation and testing. We also cover warranties, post-install service, and maintenance tips for long-term efficiency, plus timelines and practical considerations for local permitting. Our guide emphasizes energy savings, comfort, and reliable performance for your Mountain View home.

Heat Pump Installation in Mountain View, CA

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Heat Pump Installation in Mountain View, CA

Installing a heat pump is one of the most impactful upgrades you can make for year-round comfort, energy efficiency, and lower carbon emissions in Mountain View, CA. Because local weather trends include mild, wet winters and warm dry summers, the right heat pump system delivers both reliable cooling and efficient heating while taking advantage of the area’s moderate temperature swings. This page explains the full installation process, common local issues, decision points between air-source, ductless, and ducted options, permitting and HERS coordination, and what to expect for warranties and follow-up service.

Why a heat pump makes sense in Mountain View, CA

Mountain View’s climate rarely requires extreme heating capacity, so modern heat pumps with variable-speed compressors operate very efficiently here.
Heat pumps replace or supplement gas furnaces and window units, reducing utility bills and local greenhouse gas emissions.
Many Bay Area homes are good candidates for ductless mini-splits or compact air-source systems when space or ductwork constraints exist.
Local permitting and HERS verification are common; proper installation ensures compliance with California energy standards and reliable long-term performance.

Common heat pump types and how to choose

Air-source heat pumps: Best for homes with existing ductwork that is in good condition. Modern units with inverter compressors offer high Seasonal Energy Efficiency Ratio (SEER) and Heating Seasonal Performance Factor (HSPF).
Ductless mini-splits: Ideal for older Mountain View homes without ducts, room additions, or zoned comfort needs. They minimize invasive ductwork and deliver high efficiency.
Ducted heat pumps (air handlers with condenser): Good when you want whole-house comfort and have or plan upgraded ductwork. They can connect to existing ducts but may require sealing or balancing.

Selection considerations

Load calculations: A Manual J load calculation determines proper system size for your home and prevents oversizing that reduces efficiency and comfort.
Equipment efficiency: Look at SEER, HSPF, and COP values appropriate for local conditions.
Noise, aesthetics, and refrigerant type: Consider condenser placement and refrigerant lines when selecting an outdoor unit and indoor heads or air handler.
Zoning needs: Multiple indoor units or dampers can improve comfort in Mountain View homes with varied sun exposure and insulation levels.

The installation process — step by step

Site assessment and preliminary review

Inspect attic, crawlspace, existing ducts, electrical panel capacity, and preferred condenser location.
Assess insulation levels, window orientation, and shading to inform load calculations.

Load calculations and system design

Perform Manual J and duct design (Manual D) or ductless zoning plan.
Determine line-set routing, condensate drain paths, and electrical needs.

Permitting and HERS/inspection coordination

Prepare permit documents and submit required specs to local jurisdictions.
Coordinate HERS verification and any blower door or duct leakage testing required by California codes.

Electrical and mechanical prep

Upgrade electrical circuit or disconnects if required.
Prepare mounting pad or brackets for outdoor unit and layout for indoor heads or air handler.

Ductwork or line-set work

Repair, seal, and insulate ducts where needed; add returns or modify layout for airflow balance.
For ductless systems, route refrigerant lines, drain, and control wiring through minimal penetrations.

Professional installation and refrigerant handling

Install outdoor unit and indoor units, vacuum and charge refrigerant per manufacturer specs.
Ensure proper condensate removal and protective measures for attic or crawlspace penetrations.

Commissioning and performance testing

Measure refrigerant charge, airflow, static pressure, and temperature split.
Verify electrical performance, thermostat communication, and safety controls.

Homeowner walkthrough and system controls setup

Demonstrate zone controls, scheduling, and Wi-Fi app setup if available.
Provide maintenance guidance, filter locations, and recommended service intervals.

Final inspection and documentation

Submit HERS or inspection reports and confirm permit sign-off.
Deliver equipment manuals, warranty registration details, and system performance notes.

Commissioning and performance testing explained

Proper commissioning ensures the system operates as designed in Mountain View homes. Key checks include:

Refrigerant charge verification to manufacturer tolerance.
Airflow and duct testing to confirm balanced delivery.
Temperature delta testing to confirm heating and cooling capacity.
Electrical load checks and safety control validation.
HERS-required tests such as duct leakage and blower door tests when a whole-house change triggers verification.

Failing to commission properly is a leading cause of underperforming systems. Commissioning not only confirms comfort but also protects warranty eligibility and local code compliance.

Common installation issues in Mountain View, CA and how they are handled

Undersized or oversized equipment: Resolved by accurate Manual J sizing and adjustments to zoning or distribution.
Poor ductwork performance: Addressed through sealing, insulation, or redesign for sufficient return and supply paths.
Inadequate electrical capacity: Fixed by coordinating with electricians for panel upgrades or dedicated circuits.
Improper refrigerant charge and airflow: Prevented by on-site measurement and manufacturer-specific charging methods.
Placement constraints (small yards, HOA rules): Solved by alternative condenser locations, sound-attenuating pads, or compact ductless heads.

Warranties and follow-up service

Manufacturer warranties typically cover major components for a set period; compressor warranties and extended parts coverage vary by brand.
Installer labor warranties cover workmanship issues for a defined timeframe. Confirm both types of warranty and registration procedures.
Follow-up service often includes a seasonal tune-up to clean coils, check refrigerant, test controls, and measure airflow. Regular maintenance preserves efficiency and extends equipment life.

Long-term benefits and maintenance tips

Benefits: consistent year-round comfort, lower energy bills compared to older electric resistance or inefficient gas systems, reduced carbon footprint, and the potential to qualify for local or state incentives when installed to code.
Maintenance tips:
Change or clean filters every 1 to 3 months depending on use.
Keep outdoor units clear of debris and vegetation for proper airflow.
Schedule annual or biannual professional maintenance to verify refrigerant, clean coils, and test controls.
Monitor system performance and address airflow or noise changes promptly.

Final notes on compliance and timelines

Permitting and HERS verification can add time to the project; typical residential installations vary from a few days for a single ductless head to one or two weeks for a full ducted system with ductwork repairs and inspections. Early coordination on permits and HERS requirements streamlines the process and ensures the system meets California energy standards.

A properly sized and commissioned heat pump provides reliable cooling in Mountain View summers and efficient heating during cooler nights while supporting local decarbonization goals and long-term energy savings.

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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