Jacob Construction installs central air conditioning for homeowners in San Diego and across San Diego County. If you want cooling in place before the hot months, we'll come out to assess your home for free, give you a written quote for the system and the installation, and offer financing options, subject to credit approval.
This guide is for San Diego homeowners planning ahead: why spring is the right time to get quotes, what to ask about sizing and ductwork, what a complete written quote covers, and how to pay for a new system over time.
At a glance
- We install central AC across San Diego County, from the coast to inland neighborhoods.
- Get quotes in spring, not in the first heat wave. You'll have time to compare proposals instead of taking the first open date.
- Ask how the system was sized. A new system shouldn't simply copy the old unit's size.
- Many San Diego homes have no ducts or old ducts. That changes the scope and the price, so it should be in writing.
- Financing is available for approved homeowners. Financing isn't free and is subject to approval.
Why Get Central AC Quotes Before Summer
A lot of San Diego homes were built without air conditioning. Near the coast, the marine layer kept houses comfortable for most of the year, and many owners never needed more than a few fans. That has changed. Hotter late-summer stretches now reach well past the coast, and a lot of homeowners who never had AC are deciding to add it.
The problem is timing. When the first real heat arrives, everyone calls at once. Assessment appointments fill up, installation dates move out, and it's harder to compare more than one quote. If you start in spring, you can have two or three contractors look at the same house, read the proposals side by side, and choose without pressure.
Getting quotes early also gives you time for the parts of a project that take a while: permits, any electrical work the system needs, and financing approval.
Who to Call for Central AC Installation in San Diego
Call two or three licensed contractors who install complete systems, not just replace outdoor units, and ask each for a written quote. We'd like to be one of those calls.
When you request a quote, our project manager visits your home, looks at your current heating, any existing ducts, the attic and the electrical panel, and asks which rooms get hot. You get a written quote for the system and the full installation, and the person who quotes your job is your project manager until it's done. You won't be passed between a salesperson, a scheduler and an installer.
Jacob Construction has been in business since 2021. We have an A+ rating with the Better Business Bureau and are licensed in California, License #1073757. We handle the permits and paperwork on roughly 90% of our jobs, so you don't have to deal with the city yourself. One HVAC customer told us: "I upgraded my HVAC system and added three new vents… completed the project in just two days."
You can learn more about our heating and cooling installation work, or read our guide on what to do when your AC dies in San Diego if your system has already failed.
Sizing: The Question That Separates Good Quotes From Guesses
The size of a central AC system matters more than most homeowners expect. A system that's too large turns on and off in short bursts, leaves the house feeling clammy and wears out sooner. A system that's too small runs all afternoon and still can't keep up.
If you're adding AC for the first time, there's no old unit to copy, so the contractor has to work it out from the house. If you're replacing an old system, the existing size is a starting point, but the house may have changed since it was installed: new windows, added insulation, an enclosed patio or a converted garage.
Ask each contractor how they arrived at the size they're recommending. The industry method is a room-by-room load calculation called ACCA Manual J, which accounts for the home's insulation, windows, orientation and layout. A good answer explains which rooms were considered and why, not just "you need three tons."
Attic heat also plays a part. A hot attic makes the system work harder, especially where ducts run through it. Our guide on San Diego cool roofs, attic heat and AC load explains how the roof and attic affect how hard a new AC has to work.
Ducts: The Part of the Quote That Changes the Price Most
In San Diego, ductwork is often what makes two quotes so different.
- Homes with no ducts need a new duct system, or a design that avoids ducts in some rooms. That's real work in the attic or crawl space, and it should be described in the quote.
- Homes with an old furnace and old ducts may have ducts that are leaky, undersized or poorly insulated. Putting new equipment on bad ducts limits what you get from it.
- Homes with newer ducts may only need sealing, adjustments or a few added vents.
Ask each contractor to tell you in writing which of these applies to your home and what they plan to do about it. If one quote includes duct work and another doesn't mention it, you're not comparing the same job.
What a Written Central AC Quote Should Include
Whoever you call, ask that the written quote covers:
- Equipment: brand, model numbers for the indoor and outdoor units, capacity and efficiency rating
- How the size was calculated, and which rooms were considered
- Ductwork: new, replaced, sealed or reused, and where it runs
- Electrical work: a new circuit, a panel upgrade if needed, and the disconnect
- Thermostat, refrigerant lines, the condensate drain and the pad or mounting for the outdoor unit
- Permits and inspections: who pulls them and who meets the inspector
- Removal and disposal of old equipment
- Start-up and testing once the system is installed
- Equipment coverage: the manufacturer's terms for the equipment, in writing (the systems we install carry manufacturer warranties of 15–25 years)
- Total installed price and a realistic installation window
Also ask what could change the price once work starts, and how you'd approve any change before it happens. A clear answer to that question tells you a lot about how a contractor runs a job.
If you want to check what permits apply in the city of San Diego, the city's Development Services permits page is the place to look. On most of our jobs, we take care of that for you.
How to Pay for a New Central AC System
For many San Diego families, adding central AC is a big expense that doesn't fit into one month's budget. Financing is available for approved homeowners. Financing isn't free and is subject to approval. Payments are set up to fit a household budget, and we go through the options with you at the assessment, so you know what the monthly cost looks like before you decide.
If you want to understand how it works first, read how home improvement financing works.
Frequently Asked Questions
Does Jacob Construction install central AC in San Diego?
Yes. We install central air conditioning in San Diego and across San Diego County, including homes that have never had AC before.
When should I get quotes for central AC installation in San Diego?
Spring is the most practical time. You'll get assessment appointments more easily, have time to compare two or three written quotes, and can have permits and financing in place before the summer heat.
Can you add central AC to a house with no ducts?
Often, yes. It depends on the attic or crawl space and the layout of the house. We'll look at that during the assessment and explain in the written quote what duct work is needed.
Is financing available for a new AC system?
Yes. Financing is available for approved homeowners. Financing isn't free and is subject to approval.
What equipment coverage comes with a new system?
The equipment we install carries manufacturer warranties of 15–25 years, depending on the manufacturer and the equipment. We'll show you the manufacturer's terms with your quote.
Get a Central AC Quote in San Diego
If you want cooling in place before summer, request a quote or contact us, or call (415) 779-8958. We'll assess your home, explain what system and duct work it needs, and give you a written quote with financing options. Financing is subject to approval.
