Heating replacement in Redwood City, CA delivers safer, more efficient comfort by upgrading aging systems with professional design, accurate sizing, and code-compliant installation. We outline when replacement is warranted and the key steps we take: load calculations, duct inspection, venting and electrical checks, and selecting between heat pumps, high-efficiency furnaces, or hybrids. We cover costs, financing, and rebates, permits, disposal, installation timelines, warranty coverage, and long-term maintenance to maximize savings and comfort in Redwood City's mild climate.

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Heating Replacement in Redwood City, CA

Replacing a heating system is one of the most impactful improvements you can make for comfort, safety, and long-term energy costs in Redwood City homes. Whether your furnace is past the typical service life, repairs are becoming frequent, or you want to move away from fossil fuels, a full heating replacement includes a careful evaluation, a comparison of upgrade options, and professional installation that meets local permit and disposal requirements. This page explains the full process so you know what to expect and how to choose the best solution for Redwood City’s mild coastal climate.

Why replace your heating system now? Common triggers in Redwood City

Age and reliability: Furnaces and heat pumps older than 12–15 years often lose efficiency and require more frequent repairs.
Rising energy bills: Older systems can consume far more fuel or electricity for the same comfort level.
Safety concerns: Cracked heat exchangers or venting problems with combustion systems can create carbon monoxide risks.
Desire to electrify: Many Redwood City homeowners are switching to high-efficiency electric heat pumps to reduce carbon footprint and take advantage of local incentives.
Comfort issues: Uneven heating, noisy operation, or inability to maintain desired indoor temperatures justify an upgrade.

Initial system evaluation: What we check and why it matters

A thorough replacement starts with diagnostic work so your new system is sized and specified correctly. Key evaluation steps include:

Load calculation (Manual J): Determines the correct heating capacity for your home by accounting for insulation, windows, orientation, and local climate. Oversized systems short-cycle; undersized systems can’t maintain comfort.
Ductwork and distribution inspection: Leaky or undersized ducts reduce efficiency and comfort. Some projects require duct sealing, balancing, or resizing.
Venting, combustion air, and flue assessment: Critical for gas or propane systems to ensure safe, code-compliant exhaust.
Electrical and panel check: Heat pumps or high-efficiency systems may need upgraded electrical service or dedicated circuits.
Indoor air quality and thermostat compatibility: Upgrades often pair with smart thermostats, zoning, or filtration improvements.

Comparing upgrade options: heat pumps vs furnaces and fuel choices

Redwood City’s mild winters make several high-efficiency options viable. Consider these factors:

Heat pumps (air-source and ductless mini-split)
Pros: Very high efficiency, provide both heating and cooling, lower operating costs in mild climates, support home electrification. Modern units perform well down to cool temperatures common in Redwood City.
Cons: Higher upfront cost than a basic furnace; refrigerant handling requires certified technicians. Ductless options are great for room-by-room control.
Performance metrics: Look for high HSPF (heating seasonal performance factor) and SEER for combined cooling/heating systems.
High-efficiency gas furnaces
Pros: Strong heating capacity, familiar technology, lower first cost than some heat pumps. High-AFUE models deliver solid winter comfort.
Cons: Ongoing fossil fuel use and potential venting/combustion safety concerns. Fuel prices and local electrification policies can affect long-term value. Check AFUE (annual fuel utilization efficiency) ratings.
Hybrid systems
Pros: Combine a heat pump with a gas furnace to maximize efficiency across variable temperatures. Can be a pragmatic transition solution.
Cons: More complex installation and controls.

When comparing, weigh upfront equipment cost, lifetime operating costs, maintenance needs, local utility rates, and available rebates tied to electrification or high-efficiency equipment.

Cost considerations, financing, and rebates

Full replacement cost varies by system type, home size, ductwork needs, and required electrical or venting upgrades. Important financial considerations:

Total installed cost includes equipment, labor, permits, and any duct or electrical work.
Lifecycle cost analysis compares upfront price with estimated annual energy costs to show payback time. High-efficiency heat pumps often have favorable lifetime savings in Redwood City’s mild climate.
Financing: Many homeowners use home improvement loans, energy-specific financing, or on-bill options offered by local utilities.
Rebates and incentives: California and Bay Area programs often provide rebates for high-efficiency heat pumps and electrification measures, plus incentives for weatherization or duct sealing. Permit assistance typically includes help identifying eligible programs and completing rebate paperwork.

Permits, removal, and disposal

Replacement work requires local permits and inspections to ensure code compliance and safety:

Permit assistance: Expect help preparing permit applications for Redwood City or San Mateo County inspection. Proper permitting protects your home and property values.
Removal and disposal: Old equipment is removed and recycled or disposed of according to regulations. Refrigerant recovery from heat pumps and proper disposal of combustion appliances are handled by certified technicians to meet environmental and safety rules.
Safety documentation: New installations include documentation for inspectors showing compliance with venting, combustion air, electrical, and efficiency requirements.

Installation timeline and what to expect

Typical replacement timelines vary by project complexity:

Simple like-for-like furnace swap: Often completed in 1–2 days.
Heat pump installation with minimal duct changes: 1–3 days.
Full system change with ductwork, electrical upgrades, or permit scheduling: may take 1–2 weeks from start to finish.
Steps during installation:

Final measurement and materials ordering.
Equipment delivery and removal of old system.
Modifications to ducts, vents, or electrical systems as needed.
Equipment installation, refrigerant charging (for heat pumps), and commissioning.
Inspector visit and system testing to confirm performance and safety.
Technicians should leave operating instructions and register warranties after installation.

Warranty coverage and long-term protection

Understand two warranty layers:

Manufacturer warranty: Covers parts and sometimes compressors for a specified period. Registration often required for full coverage.
Labor or workmanship warranty: Covers installation errors for a defined time; verify the duration and what it includes.
Extended warranties and maintenance plans can protect against unexpected repair costs and preserve efficiency. Regular maintenance keeps warranties valid and extends system life.

Long-term energy savings and maintenance

Replacing an old system with a modern high-efficiency heat pump or a high-AFUE furnace delivers measurable savings:

Heat pumps in Redwood City typically provide significant seasonal energy savings due to the mild winters and the dual heating/cooling capability, cutting overall HVAC costs over time.
Properly sized and installed equipment reduces short cycling, improves comfort, and lowers utility bills.
Maintenance tips to protect your investment:
Change filters regularly and schedule annual professional tuneups.
Keep outdoor units clear of debris and vegetation.
Monitor system performance and energy bills; early attention to anomalies prevents larger failures.

Final considerations for Redwood City homeowners

Redwood City’s mild coastal climate and California’s policy landscape make efficient heat pump systems an increasingly attractive and practical choice, though high-efficiency furnaces and hybrid solutions remain appropriate in certain homes. A professional evaluation that includes load calculations, ductwork assessment, and permit review ensures the replacement is safe, compliant, and optimized for long-term savings and comfort. Proper planning around incentives, disposal requirements, and warranty registration will protect your investment and help your home run more efficiently for years to come.

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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