Fremont HVAC keeps local homes comfortable with experienced technicians, stocked trucks that finish most repairs in one visit, and upfront, honest pricing on every job.
Sweating upstairs and freezing downstairs is no way to live. Fremont HVAC pairs homeowners with seasoned technicians who respond quickly, diagnose accurately, and know exactly what it takes to keep a home comfortable here.
We take on the full range of comfort problems, from failed capacitors and cracked heat exchangers to ductless installs and commercial rooftop units, with the hands-on experience the job calls for.
Targeted comfort for additions, garages, and rooms the ducts never reached.
Heat pumps sized for your climate, with backup heat set up correctly.
Central air installs with the charge, airflow, and drainage verified.
Cleaner air and better airflow, with the debris actually removed.
New HVAC systems, sized, sealed, and commissioned the right way.
Same-day air conditioner repairs with an upfront price before work starts.
Furnace replacements matched to your home, not the biggest unit on the truck.
Seasonal tune-ups that catch small problems before they strand you.
No heat tonight? We find the failed part and get the furnace running.
Heating and cooling repairs on every major brand, most finished in one visit.
Heating systems of every type repaired and tested before we leave.
System replacements with proper sizing and a full commissioning test.
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Most of the calls we answer come down to two things: a house that won't cool, or a house that won't heat. Here's how we handle both.
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.
Most failures start small and give you clues first. Below are the warning signs local homeowners run into most, and any one of them is reason enough to call us for a closer look.
Warm air from the vents usually traces to a weak capacitor, a refrigerant leak, or a frozen coil, all fixable, and all diagnosable in one visit.
AC repairFrequent on-off cycling is the furnace protecting itself from a real problem. Ignoring it risks the heat exchanger, the most expensive part in the cabinet.
Furnace repairA system that runs constantly but never satisfies the thermostat is burning money. Seasonal maintenance restores the efficiency you paid for.
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 replacementIf some rooms get dusty faster than others, leaky or dirty duct runs are the likely cause. We inspect, clean, and seal what we find.
Air duct cleaningAdditions and bonus rooms rarely get enough duct capacity. A dedicated ductless head fixes the problem permanently.
Mini-split installationMost repair calls are diagnosed and fixed in a single visit because we stock the common parts, capacitors, contactors, igniters, motors, on every truck.
Experience is what separates a lasting fix from a temporary one. Our technicians have spent years reading these systems, refrigerant behavior, combustion, airflow, electrical faults, and matching the repair to the actual cause.
We treat your budget like our own: fix what's fixable, replace what isn't, and size every new system to your home instead of the biggest thing on the truck.
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, Fremont 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.
Call a local HVAC expert. Upfront pricing, no obligation.
We follow a proven, systematic approach to diagnose the problem, fix it right, and keep your home comfortable.
Call (510) 201-4732 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.
Our technician tests the system, capacitors, motors, refrigerant charge, ignition, airflow, safeties, pinpoints the actual fault, and presents your options with clear, upfront pricing.
We complete the approved work on the spot whenever possible: quality parts, code-compliant connections, and no shortcuts hidden behind the air handler.
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 Fremont HVAC for emergency HVAC service.
The first call is where it all starts. Someone on our team picks up, works out how urgent the situation is, and schedules the soonest visit available, while telling you the few simple things to do in the meantime.
There's no waiting around for days. A fully equipped technician pulls up to your home, often same-day, with the parts already on board to diagnose and start fixing right then.
The fault is pinpointed, capacitor, motor, refrigerant leak, control board, or the compressor itself. Then, we fix it there and then whenever parts allow, or quote the replacement with real numbers if the unit is done.
We offer spring and fall tune-up plans, with reminders when you're due, to keep efficiency up and failures down. A maintained system lasts years longer and runs cheaper every month.
"When our old furnace was on its last legs, they walked us through converting to a heat pump instead of just quoting a like-for-like swap. The first winter's bills were noticeably lower, and we got cooling out of the same equipment. Zero regrets on this one."
"The furnace kept short-cycling, kicking on and off every few minutes and never really warming the house. The technician diagnosed an overheating issue in minutes and sorted it in one visit. It runs like new now, and he showed me which filter to buy going forward."
"The AC would run for hours and never hit the set temperature. Their tech found a refrigerant leak at a valve, repaired it, and recharged the system properly instead of just topping it off like the last guy. It has kept up through every heat wave since."
We treat your home the way we'd treat our own: thoroughly, honestly, and with an eye on the long term. Here's the standard you can count on from us every time.
Real experience is a requirement, not a bonus. It means every technician reads refrigerant and electrical faults correctly, installs to local code, and stands behind every repair at a level most companies don't reach.
HVAC sizing is math, not guesswork, and we show ours. Our team calculates the right capacity for your home and explains every option before you commit.
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 approach is one reason we maintain a 4.9-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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