What to Look For When You’re Hiring an AC Company in Santa Rosa or Petaluma

By Jason Schlunt / CEO, Bellows Plumbing, Heating, Cooling & Electric

Every September we get the same call. Somebody’s AC died during the last heat spell in August, they got three bids in a panic, went with the cheapest one, and now — six weeks later — the new system is short-cycling, one bedroom won’t cool, and the company that installed it isn’t calling back.

It’s avoidable. Most of it comes down to a handful of things you can check before you sign anything, and none of them require you to know how a compressor works.

The short version: hire a contractor with an active California C-20 license who pulls the permit, sizes the equipment with an actual load calculation, and sends their own employees to do the work. If a company clears all four of those, you’re probably in good hands. If it misses even one, keep looking.

First, figure out whether you actually need a new system

Not every dead AC needs replacing, and a company that jumps straight to a replacement quote without diagnosing the problem is telling you something about how they operate.

Repairs generally make sense on systems under about ten years old, especially when the failure is a capacitor, a contactor, a fan motor, or a thermostat. Those are common, they’re not expensive, and a good tech can knock most of them out same-day.

Replacement starts making sense when the unit is past twelve or fifteen years, when the compressor goes, or when you’ve had multiple service calls in one summer. It also makes sense if your system still runs R-22 refrigerant. R-22 was phased out years ago and the price of it has gone somewhere absurd. Recharging an old R-22 system is throwing money at a machine that’s already on the clock.

The rough math we use: multiply the repair cost by the age of the unit. If that number lands well past what a new system costs, replacing is the better use of your money. But that’s a starting point, not gospel. A twelve-year-old system with a $400 repair and no other problems is worth fixing.

What you want is a company willing to tell you don’t replace this yet. We do it regularly, and it costs us a sale every time. It also means when we do say replace it, homeowners believe us.

The seven things worth checking

The license, and whether it’s actually active

California requires a C-20 license for HVAC work. You can look up any contractor’s number on the Contractors State License Board website in about thirty seconds — it’s free, it shows you whether the license is active, whether the business name matches, and whether there’s workers’ comp on file.

Do it. Especially the workers’ comp part. If an uninsured worker gets hurt in your crawlspace, that can become your problem, and homeowners are usually shocked to learn it.

Whether they pull a permit

Replacing an AC or heat pump requires a permit in Santa Rosa, in Petaluma, and in unincorporated Sonoma County. The permit triggers an inspection, and the inspection confirms the install meets California’s Title 24 energy code — which on a lot of jobs means duct leakage testing and verification that the refrigerant charge is right.

You will occasionally get offered a discount to skip it. We’d pass. Unpermitted HVAC work turns up during escrow at the worst possible moment, it can complicate an insurance claim, and — the part that actually matters — it means nobody but the installer ever checked the work.

A load calculation, not a look around the yard

This is the one that separates good installs from bad ones, and you can’t see it on a price sheet.

A block load calculation accounts for square footage, ceiling height, window orientation, insulation, duct condition, and the design temperature where you actually live. A full Manual J calculation is not actually necessary for adding or replacing AC in an existing home. (I can hear the “supposed” die hard HVAC contractors saying I’m wrong on this, but even they don’t actually do a full Manual J, they just claim too!)  A shaded home up in Bennett Valley and a west-facing house in east Petaluma catching full afternoon sun are not the same job, even at identical square footage.

Consumer Reports has been warning homeowners about this for twenty-plus years: be skeptical of any contractor who sizes equipment off house size or a rule of thumb. Oversized equipment is the most common mistake we find when we’re called in to fix somebody else’s install. It blasts on, satisfies the thermostat fast, shuts off, and repeats — which means it never runs long enough to pull humidity out, it’s loud, and the compressor wears out years early.

Just ask: “Are you running a Manual J? Can I see it?” The answer tells you almost everything you need to know about the company.

Who’s actually showing up

A lot of outfits sell the job and sub out the install. You meet a sharp salesperson, then a crew you’ve never heard of shows up in an unmarked van.

Everybody who works on your house from Bellows is on our payroll. Same company that quoted it does the work, protects your floors, cleans up at the end of each day, and picks up the phone in February if something’s off. That’s not a marketing line, it’s just how we’ve run since 1984, and it’s the reason we can guarantee what we guarantee.

Where they get their equipment

There’s a real difference between a contractor buying whatever’s in stock at the supply house and one with a direct line to the manufacturer.

We work directly with Lennox, Mitsubishi, Navien, Daikin, and Quilt. We’re a Lennox Premier Dealer and a Mitsubishi Diamond Elite Contractor, which are the top tiers each of those brands offers. What that gets you, practically: Lennox factory trainers run seminars for our installers and techs, warranty claims go straight to the manufacturer instead of bouncing through a distributor, and when a part is on backorder in August we’re further up the list.

An estimate that actually says something

A real estimate lists model numbers, efficiency ratings (SEER2, and HSPF2 if it’s a heat pump), what’s happening with the ductwork, what electrical work is involved, permit fees, and the warranty terms in writing.

If a quote is one line and a number, the details you can’t see are the ones that decide whether the system lasts eight years or twenty.

Ours runs 10 years parts and 1 year labor on most major installs, with the equipment-specific coverage spelled out on the estimate itself. Some of the high-efficiency furnaces carry lifetime heat exchanger coverage. It’s all on the paperwork before you sign anything.

How long they’ve been here

Sonoma County has been through a lot since 2017, and the rebuild pulled in a wave of contractors from out of the area. Plenty of them are gone now, and their warranties went with them.

Ask how long a company has worked in this county. Read the reviews, but read the one- and two-star ones specifically — you’re not looking for a perfect record, you’re looking at how the company handles it when something goes sideways. That’s the useful signal.

What replacement runs around here

It depends too much on the house for anyone to quote you honestly online. Duct condition, electrical capacity, attic access, and equipment tier all move the number significantly.

Broadly: single-stage systems sit at the entry level, two-stage in the middle, and variable-capacity inverter systems at the top. The premium tier buys quiet — the best of them run around 58 dB, which is a conversation — plus much better humidity control and lower operating cost.

Two things specific to right now that are worth asking about:

Refrigerant changed. New systems use low-GWP refrigerants like R-454B. If you’re comparing an older quote to a new one, that’s part of why the numbers moved.

Heat pumps are worth a look. One system, heating and cooling both. If your furnace is also aging out, replacing both at once with a heat pump often pencils out better over ten years than replacing them separately, and there’s rebate money available. Ask for both options priced side by side. We’ll run them.

Why people around here call us

We’ve been family-owned since 1984. Not sold, not rebranded, not run by a private equity group in another state. The owners are still active in the business.

There are about 100 of us across plumbing, HVAC, electrical, and drains, and we run 24-hour service in Sonoma County. Our install process is boring on purpose: we assess the house and design the system, you sign simple paperwork and we start the permit, a dispatcher and lead installer own the project through startup and testing, and we close out the inspections and hand you the manuals.

Our core values are the ones we hire and fire on. Dependable — we deliver what we promise. Tenacious — we work until it’s done. Devoted — every customer’s a customer for life. And joyful, which sounds soft until you’ve had a crew in your house for three days.

You’ll see our trucks around Santa Rosa, Petaluma, Rohnert Park, Windsor, Sebastopol, and Sonoma. We live here too. That’s about the best guarantee anybody can give you.

Want an estimate?

Whether your AC quit in the middle of a heat wave or you’re planning ahead for next summer, we’ll come look at the house, size it properly, walk you through the options, and leave you a detailed written estimate.

Sonoma County: 707.244.9640 — or book online.

Questions we get a lot

How long does an AC replacement take? Most straight changeouts are a one-day job. If we’re replacing ductwork, upgrading an electrical panel, or converting from a gas furnace to a heat pump, plan on two or three days.

Do I really need a permit in Sonoma County? Yes — Santa Rosa, Petaluma, and unincorporated county all require one for AC and heat pump replacement, and the work has to meet Title 24. We handle the permit as part of the job.

How long should an air conditioner last around here? Twelve to eighteen years is normal. Homes closer to the coast fight more corrosion; inland Santa Rosa and Petaluma systems just run harder in summer. Annual maintenance is what gets you to the high end of that range instead of the low end.

Is a heat pump better than a regular AC in Petaluma? Often, especially if the furnace is aging too. One system does both, it qualifies for more rebates, and there’s no gas combustion. We’ll price it both ways so you can see the difference.

Do you do emergency AC repair? Yes, 24 hours, throughout Sonoma County — Santa Rosa, Petaluma, Rohnert Park, Windsor, Sebastopol, Cotati, and Sonoma.