Whether it's a sudden breakdown or a planned efficiency upgrade, Vallejo HVAC has you covered with expert diagnosis, quality installs, and friendly, on-time service.
A house with no cooling in summer or no heat in winter can't be put on hold, so we don't. We send experienced technicians out for same-day visits and repairs built around how these systems actually fail in our local homes.
From the first call to the final airflow check, our experienced team handles every heating and cooling problem your home or business can face.
New air conditioners sized by load calculation and commissioned properly.
Aging system? We'll show you the numbers before you decide.
Repairs for any heating or cooling system, diagnosed with real testing instead of guesswork.
Dust, odors, and weak airflow traced back to the ductwork and fixed.
High-efficiency furnaces sized for your home and vented correctly.
No-heat calls handled fast, with a safety check on every visit.
Spring and fall maintenance that keeps efficiency up and breakdowns down.
Warm air, frozen coils, or a unit that won't start, diagnosed and fixed right.
Igniters, flame sensors, blowers, and boards fixed, most in one visit.
Quiet, efficient ductless systems with clean line-set installs.
Complete heating and cooling systems designed around your home's actual load.
Efficient heat pump installs that heat in winter and cool in summer.
Available now·Talk with someone about your HVAC needs
Two systems do most of the work in a typical home, and they're the two we repair most. Here's what to expect when you call.
When your AC hums but won't cool, blows warm air, or keeps tripping the breaker, the fix is usually a single worn component. We test the system, find it, and replace it, often the same day. Pricing is upfront, and we'll tell you honestly whether a repair is worth it on an older unit.
When the furnace clicks but never lights, lights and shuts off, or runs without warming the house, the cause is usually one component. We test the ignition, airflow, and safety controls to find it. You'll get a clear quote first, plus a safety check of the combustion and venting while we're there.
HVAC trouble rarely announces itself politely. If you're facing any of these problems, don't wait to call for fast, professional help.
A system pushing warm air in summer is the call we run most. Our trucks carry capacitors, contactors, and motors to restore cooling same-day.
AC repairA furnace that lights and then shuts down within seconds usually has a dirty flame sensor or a failing igniter, quick fixes for an experienced tech.
Furnace repairThat slow decline in performance isn't age, it's neglect compounding. A proper clean-and-tune brings most systems back to spec in one visit.
Maintenance & tune-upsA system past 12 to 15 years that needs a repair every season is telling you something. We'll give you the honest math on repair versus replacement.
System replacementDust settling everywhere within a day of cleaning, musty odors when the system kicks on, or allergy flare-ups indoors all point to the ductwork.
Air duct cleaningMini-splits deliver precise heating and cooling to a single zone, run whisper-quiet, and sip electricity compared to window units.
Mini-split installationA house at 90 degrees is an every-hour problem, so we treat it like one. Same-day appointments across Vallejo, with evenings and weekends available.
We don't cut corners. Our team is experienced, background-checked, and fluent in every major brand, from a 20-year-old gas furnace to the newest inverter-driven heat pump.
If a $40 capacitor fixes it, that's what we'll tell you. We quote repair and replacement honestly, with real numbers, and let you choose, no scare tactics, no pressure.
We don't just swap the failed part. We check what killed it, airflow restriction, voltage, refrigerant charge, drainage, and correct that too, so the same failure doesn't repeat next season.
Vallejo HVAC has been keeping homes comfortable in this community and the surrounding CA towns for years. We understand the local climate and the wear it causes because we live and work here too.
Our team doesn't just swap parts and leave. We check the airflow, the charge, and the electrical supply driving the failure common to local homes and businesses. This local knowledge means faster diagnosis, fewer repeat visits, and systems that last.
Get a price quote from a local team that knows homes like yours.
Every job runs through the same proven steps, so nothing gets missed and the fix actually lasts.
Pick up the phone and dial (707) 210-0159. A few quick questions later, your appointment is on the calendar, frequently the same day.
We don't guess. The diagnostic covers the full system and turns into a straightforward recommendation with the cost spelled out up front.
We complete the approved work on the spot whenever possible: quality parts, code-compliant connections, and no shortcuts hidden behind the air handler.
To keep your comfort reliable long-term, we can set up seasonal maintenance that cleans coils, checks the charge, and catches small issues before they strand you in the wrong season.
Upfront pricing · Same-day service available
Speed matters when the temperature is climbing or dropping. This is the sequence our team runs through, from the moment your call comes in to the moment your system is running again.
You call (707) 210-0159. A real person answers, assesses your situation, and sets up fast service for your home.
Our experienced technician arrives at your property with a fully stocked truck ready to get started right away. Capacitors, contactors, igniters, and motors are already on board.
On the first appointment, the cause gets found and fixed. Our technician works through electrical, refrigerant, and airflow checks and explains what happened in plain language.
We make sure temperatures stay steady and stand behind the work. This is also when we set up seasonal tune-ups to catch the next problem while it's still small, which matters most for equipment working through hard seasons.
"We signed up for their maintenance plan two years ago and it has already paid for itself. On the fall tune-up they caught a weak igniter that would have left us with no heat in January, and replaced it on the spot. Money well spent."
"We put a ductless mini-split in the bonus room over the garage that was always freezing in winter and roasting in summer. They sized it for the actual room instead of guessing, and the install was clean and quick. That room is finally usable year-round."
"Years of dust, pet hair, and who knows what else came out of our ducts. After the cleaning, the airflow from every vent is noticeably stronger, and my wife's morning allergies have all but disappeared. They showed us before-and-after photos of everything they pulled out."
We don't just swap parts and leave. We make sure the job is done right. Every visit is backed by our experience, honest recommendations, and thorough work you can count on.
The difference shows up in the results. Our technicians have logged real years on these systems, so they identify the actual fault the first time and fix it properly instead of throwing parts at your system until something sticks.
We size every replacement to an actual load calculation rather than defaulting to whatever's on the truck. Installations include the details that matter: sealed duct connections, correct line sets, proper condensate handling, clean electrical work. You get a system that performs for years, not just on day one.
Our team believes in keeping systems alive with inexpensive seasonal care. If you want years more from your current equipment, our seasonal tune-up plans handle the checks that actually extend equipment life. No surprises, no hidden fees. This approach is one reason we maintain a 5.0-star rating across 120+ reviews.
From our home base out to the neighboring towns, our technicians are based close enough to respond fast wherever your home or business sits.
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