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.
When the air conditioning quits or the furnace won't light, you need a technician who finds the real problem and fixes it the same day.
A dead air conditioner on a hot afternoon is the call we run most. The usual culprit is a small electrical part, a capacitor or contactor, that our trucks carry, so most AC repairs are finished in one visit. Every repair comes with an upfront quote and an honest opinion on repair versus replacement.
Most furnace breakdowns come from a handful of parts: flame sensors, igniters, inducer motors, and control boards. We find the one that failed and fix it, usually in a single visit. We also check for the problems that matter for safety, like a cracked heat exchanger, and give you an upfront price before any work begins.
One call handles it all. AC repairs, furnace service, heat pumps, mini-splits, duct cleaning, and emergencies, handled by experienced professionals.
Efficient AC systems, correctly sized and installed to last.
System replacements with proper sizing and a full commissioning test.
Heating and cooling repairs on every major brand, most finished in one visit.
Source-removal duct cleaning, not a quick vacuum and a coupon.
High-efficiency furnaces sized for your home and vented correctly.
No-heat calls handled fast, with a safety check on every visit.
Coils cleaned, charge checked, safeties tested, twice a year.
Warm air, frozen coils, or a unit that won't start, diagnosed and fixed right.
No heat tonight? We find the failed part and get the furnace running.
Quiet, efficient ductless systems with clean line-set installs.
New HVAC systems, sized, sealed, and commissioned the right way.
Year-round heating and cooling from one efficient system.
HVAC trouble shows up in many ways. If you're seeing any of these problems, contact our team right away for prompt help.
Low refrigerant, a failed compressor start, or a dirty condenser can all masquerade as the same symptom. Real diagnosis beats parts-swapping every time.
AC repairIf the blower runs but the air never warms, or the unit clicks without lighting, the failure is diagnosable in minutes with the right tools.
Furnace repairEnergy bills creeping up while comfort drops means the system is working harder than it should, dirty coils, clogged filters, or failing motors are the usual suspects.
Maintenance & tune-upsWe size replacements with a real load calculation, not a guess, so the new system delivers even temperatures and lower bills from day one.
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 cleaningA garage office, a converted attic, or that one bedroom the ducts never reached, a ductless mini-split solves it without tearing open walls.
Mini-split installationAn HVAC system never fails at a convenient time. We schedule fast, show up on time, and arrive with the parts to finish the job.
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.
Installations get the full treatment, real load calculation, correct line sets, sealed and balanced ductwork connections, and a complete commissioning test before we leave.
Year after year, Vallejo HVAC has been the team local families call when the AC quits or the furnace goes cold. We've serviced systems in nearly every neighborhood around town, and that track record shapes how we approach each job, from the first diagnostic to the final test.
Anyone can bolt in a condenser. Lasting comfort comes from understanding the home and the system together, and that's where our years working in this area pay off, fewer callbacks, faster fixes, and installs that pass inspection without drama.
Get a price quote from a local team that knows homes like yours.
Our 4-step process is designed for accuracy, speed, and zero surprises on the invoice.
Pick up the phone and dial (707) 210-0159. A few quick questions later, your appointment is on the calendar, frequently the same day.
A technician evaluates the unit on-site, confirms exactly what's wrong, and lays out a plan and a price before any work begins.
Most repairs finish the same visit, our trucks carry the common parts. Replacements are installed to code with proper sizing, sealed connections, and clean workmanship.
We verify temperatures at the vents, check the charge, confirm the condensate drains clear, and walk you through what was done. Optional maintenance plans keep the system cleaned, inspected, and running efficiently for years.
Upfront pricing · Same-day service available
Acting quickly keeps a small failure from becoming a big one. Here's how we respond when you call Vallejo HVAC for emergency HVAC service.
When you call (707) 210-0159, you reach our local team directly. We listen to what's going on, note the details that matter, and get you on the books, often within hours, with quick guidance on what to do until we arrive.
Your technician shows up ready to work, not just to look. The common failure parts ride on every truck, so the visit moves straight from diagnosis into repair.
This is where the problem actually gets solved. We repair what's repairable immediately, and when replacement is the honest answer, we handle removal, disposal, and a code-compliant install without drama.
We offer spring and fall tune-up plans, so you never have to think about it, to keep efficiency up and failures down. Staying ahead of the problem is how equipment reaches year 15 and beyond.
"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 cracked 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 measured and calculated instead of eyeballing it, 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 calmed way down. They showed us before-and-after photos of everything they pulled out."
Choosing who works on your HVAC system is a real decision. Here's what sets us apart from other local service companies.
Real experience is a requirement, not a bonus. It means every technician understands sizing, airflow, and combustion, installs to local code, and stands behind every repair at a level most companies don't reach.
We match every replacement to your home's real heating and cooling load 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. Most installs are completed in a single day with minimal disruption.
Our team focuses on keeping systems alive with simple, scheduled care. If you want to avoid the emergency replacement, our spring and fall maintenance visits handle the checks that actually extend equipment life. It's that simple. This focus on longevity is one reason we maintain a 4.8-star rating across 150+ 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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Call (707) 210-0159 Now