East Palo Alto HVAC Company handles heating, cooling, and air quality work for homes and businesses across East Palo Alto and San Mateo County. Whether a system stopped working overnight or you are planning a full replacement, we scope the job on the call and confirm the price before anything is scheduled. Careful with your home. Clear about the work. Straight on the price.
We work with homeowners, landlords, property managers, and commercial clients. Every call gets the same attention, whatever the job size. From a single-room mini-split to a full commercial system, the work gets the same careful look. Call for a quote and we will go through what the service covers before it is booked.
Whether it is a one-time repair or a full system replacement, we cover the full range of residential and commercial HVAC work. That means AC repair and service, furnace repair and service, heat pump repair and installation, full system replacement, ductwork repair and sealing, thermostat and smart-control installation, seasonal maintenance and tune-ups, and indoor air quality and air filtration.
We work with homeowners, renters, landlords managing single-family rentals, property managers overseeing apartment buildings, and commercial clients running offices and mixed-use spaces. If the system heats or cools a space, we service it. When a repair call comes in, we give honest recommendations on repair versus replacement, never an upsell. The goal is the right answer for your situation, not the more expensive one. Call us and we will handle the rest.
Noticing uneven temperatures or a spike in energy bills? An air conditioner that stops cooling, blows warm air, or shuts down without warning usually has a diagnosable cause. We check refrigerant levels and look for leaks, inspect the condenser and compressor, test capacitors, clean the evaporator coil, and trace airflow problems that leave some rooms warmer than others. The price is confirmed before we schedule, so call for a quote and we will tell you what the visit covers.
A no-heat call in the middle of a cold stretch needs a clear answer fast. We diagnose furnaces that will not fire, air handlers with blower problems, and heat exchangers that need inspection. A furnace tune-up before the heating season can catch a problem before it becomes a no-heat night. We handle both residential heating repair and commercial heating service across East Palo Alto and the surrounding area.
Heat pumps that will not heat or cool often have a refrigerant issue or a reversing valve that is not switching properly. We diagnose the cause before recommending parts, inspect the system for efficiency losses, and handle heat pump replacement when the unit has reached the end of its useful life. Energy-efficiency upgrades are part of the conversation when a replacement makes more sense than another repair.
Don't let a small problem turn into a no-heat night or a no-cool afternoon. A ductless mini-split that stops cooling or heating is often a refrigerant or sensor issue, and catching it early keeps the repair straightforward. We install, repair, and service ductless systems, including multi-zone setups where different rooms need independent temperature control. If you are adding a room or converting a garage, a mini-split is often the cleanest solution.
Leaking duct runs waste conditioned air before it reaches the room and drive up energy bills without any obvious sign of failure. We inspect ductwork for damage and leaks, seal problem sections, and replace runs that are too far gone to patch. When the cause of an uneven house is actually investigated, duct leakage turns out to be the culprit more often than people expect.
A thermostat that reads the wrong temperature or fails to communicate with the system can make a perfectly good unit behave badly. We replace failed thermostats, install programmable and smart thermostats, handle the wiring, and calibrate the new control to the system. If you want zone control across multiple areas of a building, we can walk through what that involves on the call.
We know schedules shift, so we keep your booking flexible, but indoor air quality work is worth planning ahead for. Whole-home filtration systems, air purifier installation, and air quality testing address the particulates and allergens that circulate through a system every time it runs. If a humidifier or dehumidifier fits the situation, we cover that too. Call for a quote and we will explain what the options look like for your setup.
A spring AC tune-up and a fall furnace tune-up each follow a set inspection checklist: refrigerant level check, blower motor inspection, filter condition, electrical connections, and a full system run-through. Preventive maintenance catches the small problems before they become the reason a system goes down on the worst possible day. We offer seasonal maintenance for both residential and commercial HVAC systems.
The Bay Area's mild marine climate, recurring wildfire smoke seasons, and the regional push toward all-electric heating create specific equipment needs in East Palo Alto. The three services below come up regularly here for reasons that are particular to this area.
Many homes in East Palo Alto were built when the marine climate made air conditioning feel unnecessary, and a significant share still have no central cooling. After recent heat events pushed temperatures well past what the area historically saw, first-time AC installation has become one of the most common requests we handle. For homes without existing duct infrastructure, a ductless mini-split is often the most practical path: no duct runs to add, no major construction, and the ability to cool specific rooms or zones rather than the whole house. We size the unit for the space, walk through equipment options on the call, and confirm the full scope before scheduling.
When wildfire smoke moves through the Bay Area, a standard filter does not stop the fine particulates that cause the most respiratory irritation. MERV-13 and higher rated filtration is built to capture particles at that size, and we install and upgrade filtration systems to that standard. The job involves checking compatibility with the existing air handler, selecting the right filter housing, and confirming that the system can move enough air through the denser media without straining the blower. For homes and offices where air quality matters year-round, this is a practical upgrade, not a luxury one.
California's building-code direction and grid-level incentive programs have made heat pump replacement a routine conversation in San Mateo County. When a gas furnace or an older AC reaches the end of its life, replacing it with a heat pump system handles both heating and cooling from a single unit. We size the equipment for the home, discuss the options that fit the existing infrastructure, and handle the full installation. If you are weighing the switch and want to understand what is involved before committing, call for a quote and we will go through it.
No heat on a cold night, no cooling during a heat event, or a system that shuts down entirely and will not restart: these are the calls that cannot wait. Urgent HVAC repair calls are answered, and the job can be scoped on the phone before anything is scheduled. When the technician arrives, the real work begins with a proper diagnosis before any parts are quoted. We treat your home and its system the way we would our own. Call and we will get the air running right.
We work with the full range of property types and client situations. Homeowners dealing with a system that stopped working. Renters whose landlord needs a repair handled quickly. Landlords and property managers keeping rental units and apartment HVAC systems in working order. Office managers and commercial property owners whose tenants need reliable heating and cooling year-round.
Whatever the property type, the diagnosis starts the same way: the cause of an uneven house actually investigated, not assumed. A commercial building with hot and cold zones, an apartment with an AC that keeps tripping, or a rental property with a furnace that will not fire all get the same methodical look. We'll go through what the service covers before it is booked.
When you call, we confirm the price before anything is scheduled and explain what the visit covers. That applies to repair quotes, replacement estimates, and installation cost questions alike. Straight answers on the phone. Real HVAC work. Quick to respond.
We do not quote a final invoice total on this page because the right number depends on what the system actually needs. What we can tell you is that no-pressure estimates, priced up front, are how every job starts. Whether you are asking about AC repair cost, furnace replacement cost, a new heat pump, or a full system replacement, the number is confirmed on the call before we schedule. Call for a quote.
We serve East Palo Alto and the communities around it throughout San Mateo County and the broader South Bay. That includes Menlo Park, Redwood City, Palo Alto, Mountain View, Sunnyvale, San Jose, San Mateo, and Belmont. If you are searching for an HVAC contractor near you in this part of California, we cover the area and can scope the job on the call. Call us and we will handle the rest.
Diagnosis starts with the symptoms you describe on the call, which shape what gets checked during the visit. On-site, the technician works through the system methodically: checking refrigerant levels, testing electrical components, inspecting coils and airflow, and tracing the symptom back to its source. A repair is not recommended until the cause is confirmed.
Common signs include warm air coming from the vents when the system is set to cool, the system cycling on and off more frequently than usual, unusual noise from the indoor or outdoor unit, or a house that simply will not cool down to the set temperature. A spike in energy bills without a change in usage can also point to a system that is working harder than it should. Any of those symptoms is worth a call before the problem develops further.
A furnace that blows cold air, fails to start, makes a banging or rattling noise during operation, or runs continuously without warming the space are all signs that something needs attention. Short cycling, where the furnace fires and shuts off repeatedly in a short period, is another common symptom worth investigating. Catching these early typically means a smaller repair than waiting until the system stops working entirely.
The decision depends on the system's age, the cost of the repair relative to what a replacement would run, and how the system has been performing overall. We go through that assessment on the call and during the visit, giving you an honest read on which direction makes more sense for your situation. If replacement is the better answer, we explain why and what the installation involves.
Replacing a gas furnace with a heat pump involves removing the existing combustion equipment, installing the new air handler and outdoor unit, and connecting the system to the existing duct network or to new ductless zones where ducts are not practical. A site assessment covers duct condition, the air handler location, and what the space requires to be conditioned properly. We go through the full scope on the call before anything is scheduled.
An upgrade to MERV-13 or higher filtration starts with checking whether the existing air handler can move enough air through the denser filter media without straining the blower. From there, the job may involve installing a new filter housing, upgrading the media cabinet in the duct system, or adding a whole-home air scrubber that operates independently of the HVAC system. The right approach depends on the existing equipment and duct layout, which is confirmed during the visit.
For homes without existing duct infrastructure, a ductless mini-split system is typically the most practical path. The installation involves mounting an indoor unit on the wall, running a small conduit to the outdoor compressor, and connecting the refrigerant lines and controls. A site assessment covers the layout of the home, where the outdoor unit can be placed, and how many indoor units the space needs to condition it properly.
For most repair and service work, the system is de-energized before the technician works on internal components. The technician handles that as part of the visit. If there is anything you need to be aware of ahead of time, such as a breaker location or a disconnect that needs to be accessible, we will flag it on the call.
Clear a path to the equipment being serviced: the furnace or air handler, the outdoor unit, and any registers or vents the technician may need to check. If the work involves attic or crawl-space access, make sure those entry points are reachable. Letting us know about any access challenges on the call helps the visit go more smoothly.
Yes. The work area around HVAC equipment involves moving parts, refrigerant lines, and electrical components, and it is safest to keep children and pets in a separate part of the home during the visit. If the work involves outdoor unit access, keep the area around the unit clear as well. The technician will let you know which areas to avoid when they arrive.
East Palo Alto HVAC Company handles heating, cooling, and air quality work for homes and businesses in East Palo Alto and across San Mateo County. We are available every day from 7 AM to 8 PM. Careful with your home. Clear about the work. Straight on the price.
Call (650) 899-6391 for a quote.
We will go through what the service covers before it is booked.
Below is a plain-language look at the heating and cooling work we handle in East Palo Alto and the surrounding area. Each service is described by what it covers, who it fits best, and a practical note worth knowing before you call. If a job does not fit neatly into one row, call us and we will scope it on the phone.
| Service | What's Included | Best For | Things to Know |
|---|---|---|---|
| Thermostat & Smart-Control Installation |
| Homeowners upgrading controls or dealing with a thermostat that reads incorrectly or fails to communicate with the system | A thermostat that is reading the wrong temperature can make a perfectly functional unit behave as though it has a mechanical problem |
| Ductwork Repair & Sealing |
| Homes with uneven temperatures room to room or energy bills that have crept up without an obvious cause | Leaking duct runs waste conditioned air before it reaches the room and can account for a meaningful share of heating and cooling cost |
| Heat Pump Electrification |
| Homeowners replacing a gas furnace or aging AC and moving to an all-electric heating and cooling system | California building-code direction has made heat pump replacement a routine conversation when an older system reaches end of life in San Mateo County |
| Indoor Air Quality & Air Filtration |
| Households dealing with allergens, particulates, or air quality concerns that circulate through the HVAC system | Filtration upgrades work best when sized and matched to the existing air handler, which we confirm before recommending an approach |
| Heat Pump Repair & Service |
| Properties where the heat pump will not heat or cool, or is running but not keeping up | A reversing valve that is not switching properly is one of the more common causes of a heat pump that heats in one mode but not the other |
| AC Repair & Service |
| Homes or offices with an AC that stops cooling, blows warm air, or cycles on and off | A spike in energy bills without a change in usage often points to a system working harder than it should, worth catching before the cooling season peaks |
| Wildfire-Smoke Air Filtration (MERV-13+) |
| Homes and offices where wildfire smoke seasons make fine-particulate filtration a practical priority | MERV-13 and higher filters capture particles that standard filters pass through, but the air handler must be able to move enough air through the denser media without straining the blower |
| Ductless Mini-Split Installation |
| Homes without existing ductwork, room additions, or garage conversions needing independent temperature control | For homes in East Palo Alto built before central AC was common, a ductless system avoids the cost and disruption of adding duct runs |
| Full System Installation & Replacement |
| Homeowners and property managers replacing an aging or failed system with a new unit | When a repair cost approaches a significant share of replacement cost, a full replacement often makes more financial sense over the next several years |
| First-Time AC & Ductless Cooling Installation |
| Homes that have never had air conditioning and are adding cooling for the first time | Recent heat events across the Bay Area have made first-time cooling installation one of the most common requests we handle in this area |
| Seasonal Maintenance & Tune-Ups |
| Homeowners and property managers who want to catch developing problems before they cause a system failure | A spring AC tune-up and a fall furnace tune-up each follow a set checklist, and scheduling before peak season keeps wait times shorter |
| Heating & Furnace Repair |
| Homes and rentals where the furnace will not fire, blows cold air, or short-cycles | A furnace tune-up before the heating season can catch a developing problem before it becomes a no-heat night |
| Emergency HVAC Service |
| Any situation where the system has stopped working entirely and waiting is not an option | Call when the system goes down and a real person answers to scope the problem and get a repair scheduled as quickly as the situation allows. |
How often should I schedule maintenance and tune-ups for my HVAC system?
For most systems, once a year for heating and once a year for cooling is the practical standard. A fall furnace check before the heating season and a spring AC check before summer each follow a set inspection list. Skipping a year or two is common, but a system that has not been serviced in a while tends to surface problems at the worst possible time. Scheduling before peak season also means shorter waits and more flexibility on timing.
Why is one room in my home hotter or colder than the rest?
Uneven temperatures usually trace back to one of a few causes: duct leakage that lets conditioned air escape before it reaches the room, a damper that is partially closed, an undersized or oversized unit for the layout of the home, or an airflow restriction at the register or coil. We look at the actual cause rather than assuming, because the right fix depends on which of those is actually happening. Call us and we will talk through the symptoms on the phone before the visit.
What can strange noises from my HVAC unit mean?
The noise usually points to where the problem is. A banging or rattling sound during startup or operation often means something is loose inside the air handler or furnace cabinet. A grinding noise from the outdoor unit can point to a bearing problem in the compressor or fan motor. A high-pitched squeal from the blower is often a belt or motor issue. None of these are sounds to wait on, because a mechanical problem that is caught early is usually a smaller repair than one that runs until it fails completely.
System Checked Before Parts Are Quoted
When the technician arrives, the diagnosis comes first. A repair recommendation is not made until the cause is confirmed, so you know what you are paying for and why.
How does a dirty filter or coil hurt my system's performance?
A clogged filter restricts the airflow the system needs to move heat effectively, which forces the blower to work harder and can cause the evaporator coil to ice over. A dirty evaporator or condenser coil reduces the system's ability to transfer heat, which shows up as longer run times, higher energy bills, and a house that never quite reaches the set temperature. Changing the filter regularly is the simplest thing a homeowner can do to protect the system between service visits.
What causes a system to short-cycle?
Short-cycling, where the system fires or runs for a short period and then shuts off and starts again repeatedly, usually points to one of a few things. An oversized unit that cools or heats the space too quickly before the thermostat is satisfied is one cause. A refrigerant problem that causes the system to trip a pressure limit is another. Electrical issues at the control board or thermostat can also produce the same symptom. We diagnose the cause before recommending a fix, because the right answer depends on which of those is actually happening.
How do I choose between repairing and replacing an older system?
The decision comes down to a few practical factors: how much the repair costs relative to what a replacement would run, how the system has been performing overall, and whether the equipment is old enough that another repair is likely to be followed by another one in short order. We give an honest read on that during the visit and on the call. If replacement makes more sense, we explain why and what the installation involves. The goal is the right answer for your situation, not the more expensive one.
Transparent Upfront Pricing
We confirm the price before anything is scheduled and explain what the visit covers. No-pressure estimates, priced up front, are how every job starts.
What are the signs of a refrigerant or airflow problem?
A refrigerant issue often shows up as warm air from the vents when the system is set to cool, ice forming on the refrigerant lines or evaporator coil, or a system that runs constantly without reaching the set temperature. An airflow problem tends to produce uneven cooling, weak airflow from certain registers, or a system that struggles to keep up on hot days. Either can drive up energy bills without an obvious single cause. Both are worth a diagnostic call rather than waiting to see if the problem resolves on its own.
How do I know when to call a technician versus trying a fix myself?
Changing a filter, clearing debris from around the outdoor unit, and checking that the thermostat is set correctly are all reasonable first steps a homeowner can take. Anything that involves the refrigerant system, electrical components, the heat exchanger, or the gas supply side of a furnace is work for a technician. Attempting a repair on those components without the right tools and knowledge can turn a manageable problem into a more expensive one. If you are not sure, describe the symptom on the call and we can help you figure out whether it needs a visit.
Emergency No-Heat and No-Cool Calls Handled
Urgent and no-heat calls are handled every day, including weekends, and a real person answers to scope the situation on the phone. Call us and we will get the air running right.
How are emergency no-heat or no-cool calls handled?
Urgent and no-heat calls are taken every day, and a real person answers to scope the situation before anything is scheduled. When you call, describe what the system is doing and we will scope the situation on the phone. The technician who comes out starts with a proper diagnosis before any parts are quoted, so the repair recommendation is based on what the system actually needs. We confirm the price before anything is scheduled.
What does a thermostat or smart-control upgrade actually involve?
The job starts with checking compatibility between the new control and the existing system, because not every smart thermostat works with every type of HVAC equipment. From there, the old thermostat is removed, the wiring is connected to the new unit, and the control is calibrated to the system so it reads and responds accurately. If you are interested in zone control across multiple areas of a building, that involves additional equipment and a different conversation, which we can walk through on the call.
Is it worth repairing older equipment, or does age alone make replacement the better call?
Age alone is not the deciding factor, but it is part of the picture. A system that is fifteen or more years old and needs a significant repair is often close to the point where replacement makes more financial sense, especially if the equipment is an older refrigerant type that is becoming harder to service. A younger system with a straightforward repair is usually worth fixing. We look at the full picture during the visit and give you a straight answer on which direction makes more sense.
Every job starts with a call, and every call gets a straight answer on what the work involves and what it will cost. Call us for a quote and we will go through what the service covers before anything is scheduled.
(650) 899-6391