Whether it's a sudden breakdown or a planned efficiency upgrade, Walnut Creek 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.
Whatever your system needs, a quick fix, a smart upgrade, or a full replacement, our team covers it start to finish with workmanship that lasts.
New air conditioners sized by load calculation and commissioned properly.
Coils cleaned, charge checked, safeties tested, twice a year.
High-efficiency furnaces sized for your home and vented correctly.
Cleaner air and better airflow, with the debris actually removed.
Heating systems of every type repaired and tested before we leave.
Gas and electric furnace repairs with combustion and safety checks included.
Heating and cooling repairs on every major brand, most finished in one visit.
Heat pumps sized for your climate, with backup heat set up correctly.
Complete heating and cooling systems designed around your home's actual load.
Quiet, efficient ductless systems with clean line-set installs.
Honest repair-or-replace advice, and clean changeouts when it's time.
Same-day air conditioner repairs with an upfront price before work starts.
Available now·Speak with someone about your HVAC needs
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.
Most air conditioner breakdowns trace back to one failed part: a weak capacitor, a burned contactor, a seized fan motor, or a slow refrigerant leak. We diagnose it with gauges and meters, not guesswork. Pricing is upfront, and we'll tell you honestly whether a repair is worth it on an older unit.
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. Every visit includes a safety check of the burners and venting, and you'll know the price before we start.
HVAC trouble rarely announces itself politely. If you're dealing with 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 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-upsWhen repair bills start stacking up, a modern high-efficiency system often costs less per month than keeping the old one alive.
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 cleaningAdditions and bonus rooms rarely get enough duct capacity. A dedicated ductless head fixes the problem permanently.
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.
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.
Walnut Creek HVAC has been keeping homes comfortable in this community and the surrounding CA towns for more than 15 years. We know this area inside and out because this is our home, not just our service area.
Knowing Walnut Creek is half the job. We've learned which neighborhoods run undersized ducts, how the local climate loads systems season to season, and what inspectors here look for on permits, and we put that knowledge to work on every job so it's done right the first time.
Get a price quote from a local team that knows homes like yours.
We follow a proven, systematic approach to diagnose the problem, fix it right, and keep your home comfortable.
Call (925) 205-6535 and we'll get you a price quote, often within a day. A few quick questions, cooling or heating, what the system is doing, how old it is, and we'll book a time that works for you.
We inspect the whole system, not just the obvious symptom, and give you a straight answer: what failed, why, and what repair versus replacement really costs.
From swapping a contactor to setting a new condenser, every job gets the same standard: right parts, right sizing, right 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
The first visit sets the tone. Here's exactly what happens when you call Walnut Creek HVAC for emergency HVAC service.
You call (925) 205-6535. A real person answers, assesses your situation, and sets up fast service for your home.
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.
The technician confirms exactly what failed and why, then fixes it on the spot, and if the system is beyond saving, walks you through right-sized replacement options with real numbers and a realistic timeline.
We don't disappear once the visit is done. We follow up to confirm everything is holding, and for systems in their later years we'll suggest the maintenance rhythm that keeps them reliable instead of surprising you.
"The furnace quit at 11 pm with the temperature dropping fast and a newborn in the house. They picked up immediately and walked me through the basics over the phone, then had a technician out first thing. We had heat again by mid-morning. Absolute pros."
"We put a ductless mini-split in the bonus room over the garage that no vent had ever reached. They sized it for the actual room instead of guessing, and the install was clean and quick. That room is finally usable year-round."
"From the estimate to the final walkthrough, the whole install was smooth and organized. The crew wore shoe covers, put down drop cloths, hauled off the old equipment, and the final bill matched the quote to the penny. The new system is so quiet we barely notice it running. Highly recommend."
Choosing who works on your HVAC system is a real decision. Here's what sets us apart from other local service companies.
Hands-on experience is the real benchmark for HVAC work. Every technician on our team has years of field experience across air conditioners, furnaces, heat pumps, and ductless systems, which means your home gets serviced according to the highest industry standards.
We size 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 believes in keeping systems alive with simple, scheduled care. If you want years more from your current equipment, our spring and fall maintenance visits 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 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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