Claremont HVAC Company handles heating, cooling, installation, repair, replacement, and maintenance for homes and businesses across Claremont and the surrounding Los Angeles County communities. Whether the system stopped working overnight, a new build needs equipment from the ground up, or a rental property is overdue for a tune-up, we take the call and get it scheduled. We are open daily, 6:00 AM to 9:30 PM.
Describe what the system is doing and we can take it from there.
Prompt scheduling. Pricing set out up front. Tidy workmanship.
Call for a quote: (909) 929-7895
Keeping a home comfortable starts with a system that runs right, and that means having someone who can work across the full range of equipment. We handle central air conditioners, gas furnaces, heat pumps, ductless mini-splits, ductwork, thermostats, and indoor air quality systems. The work is matched to the manufacturer's specification on every job, whether that is a straightforward repair or a full system swap.
Call and we'll get your heat or AC back on.
When an air conditioner stops cooling, blows warm air, or won't turn on, the cause could be anywhere from a refrigerant leak to a failed compressor to a clogged evaporator coil. The visit starts with a diagnosis. We check the condenser, the coil, the refrigerant charge, and the electrical controls before quoting any parts. Claremont summers push systems hard, and a unit that is struggling in June will not improve by August on its own.
A furnace that blows cold air, cycles on and off without warming the house, or simply won't turn on needs a proper diagnosis before anything is replaced. We check the air handler, the blower motor, the heat exchanger, and the controls. Winters here are mild, but Claremont's older housing stock runs gas furnaces that have been in place for decades, and a system that sat unused through a warm winter can develop faults before the first cold night of the season.
Heat pump problems often show up as a system that blows cold air in heating mode, runs constantly, or trips the disconnect. We service and repair existing heat pump systems and install new ones. Adoption is growing across the region as homeowners look at year-round efficiency, and the heat pump section further down the page covers new installations in more detail.
A ductless mini-split that stops cooling, makes unusual noise, or loses its ability to hold a set temperature needs the refrigerant circuit, the coil, and the control board checked before any conclusions are drawn. We also install new ductless systems in rooms, additions, and whole properties that have no existing ductwork. Zoning a home with mini-splits gives each space independent control, which matters when one room runs hotter than the rest.
When a system is beyond repair or simply too old to run efficiently, a full replacement is the practical answer. Sizing matters more than most people expect: an oversized unit short-cycles and leaves humidity behind, while an undersized one runs constantly and still can't keep up. We scope the job on the call, confirm what the work involves, and handle permits where the job needs them.
Leaking ducts waste conditioned air before it reaches the room, and the symptom usually shows up as uneven temperatures or a system that runs longer than it should. Ductwork is checked when the symptoms point that way, before assuming the equipment itself is the problem. We repair, seal, and replace ductwork in attics, crawl spaces, and wall cavities.
A thermostat that reads the wrong temperature, fails to trigger the system, or loses its programming is a simple fix that makes a noticeable difference. We install standard replacements and smart controls that let you set schedules, adjust remotely, and track energy use. A properly calibrated thermostat also takes pressure off the equipment by running it only when it needs to run.
Indoor air quality is treated as part of the system, not an add-on. Poor filtration, inadequate ventilation, or a system that recirculates dust and allergens affects the whole house. We install upgraded filtration, air purifiers, and ventilation solutions that work with the existing air handler. This connects directly to the wildfire-smoke filtration work covered in the featured section below.
If you're not sure your system can keep up, a failure in the middle of a heat wave or a cold snap is not the time to wait. We take emergency calls for both no-heat and no-cool situations, and we are available daily from 6:00 AM to 9:30 PM.
Common emergency symptoms include a system that won't turn on, an HVAC unit that short-cycles every few minutes, a furnace that shuts off before the house reaches temperature, or an AC that runs continuously without cooling the space. Landlords and property managers dealing with a unit where the AC stopped working in summer or heat went out mid-winter can call the same number.
We find the fault. We make the repair. We restore the comfort.
Call (909) 929-7895 for emergency HVAC service in Claremont.
We track down the problem fast.
Some homes need a full system replacement. Others just need a tune-up. The cost question depends entirely on what the system needs, and the only way to get an accurate number is to scope the job first.
When you call, we go through what the system is doing, the equipment type, and the scope of the work. The price is confirmed before anything is scheduled. That applies to repairs, new installations, seasonal maintenance, and emergency calls alike. There is no single figure that covers all HVAC work, but you will not be left guessing about what the visit costs before you agree to it.
For replacement jobs, the cost depends on system type, the size of the space, whether ductwork needs attention, and what equipment is going in.
Call for a quote and we will walk through the specifics: (909) 929-7895.
We'll take the details and get it scheduled.
Claremont sits in the Inland Valley, where summer temperatures regularly climb past 90 degrees Fahrenheit and Santa Ana wind events push heat and smoke across the eastern San Gabriel Valley. Historically, a mild climate meant many properties here were built without central air conditioning. That has changed fast after recent record heat, and LA County's push toward electrification is reshaping what equipment people are choosing. The three services below reflect what is actually coming up in this area right now.
Many older Claremont properties were built without central air, and adding a full ducted system is not always practical or cost-effective. A ductless mini-split installation puts cooling exactly where it is needed, with no ductwork required. For homes that can support central air, we size and install a complete system from the air handler out. Either way, the job starts with measuring the space, confirming the load, and selecting equipment that matches the conditions here, not a generic spec.
Standard residential filters are not built to capture the fine particulate matter that comes with wildfire smoke. During fire season, smoke events in Claremont and across the eastern San Gabriel Valley push particulate levels well above safe thresholds, and a filter rated MERV-8 or below passes most of it through. We upgrade filtration to MERV-13 or higher, confirm the air handler can handle the increased resistance, and install air purifiers where the existing system needs support. Indoor air quality is treated as part of the system, and the filtration upgrade is matched to what the equipment can actually support.
Replacing an aging gas furnace or a worn-out AC with a heat pump system makes practical sense in Claremont's climate zone. Mild winters mean a heat pump can handle heating loads efficiently without the backup heat demand that makes the math harder in colder regions. We size the system to the property, handle the installation, and manage permits where the job requires them. The work is scoped on the call so you know what the project involves before anything is scheduled.
Your time matters, so we keep the HVAC job moving, whether the property is a single-family home, a condo, a rental unit, or a commercial building. Homeowners dealing with a system that stopped working get the same response as a property manager with a tenant calling about no heat.
For residential customers, we handle everything from a single-room mini-split to a full central air replacement. Landlords and property managers can call for rental property repairs, apartment AC service, and anything that needs to be resolved before it becomes a tenant complaint.
On the commercial side, we work with small offices, retail spaces, and multi-unit properties. Seasonal maintenance and tune-ups are a recurring need for both property types. An AC tune-up before summer and a furnace check before the first cold stretch keeps the equipment running at the point when it matters most, and it catches small problems before they become emergency calls.
Pick up the phone and we'll get started.
We serve Claremont and the surrounding communities across the eastern San Gabriel Valley and into the Pomona Valley. If you are nearby, we can take the call.
Areas we cover include:
Several of these communities fall within Los Angeles County, and we also serve customers in adjacent areas of San Bernardino County. Call to confirm coverage at your address.
The outdoor unit check covers the condenser coil condition, refrigerant pressure, the capacitor and contactor, fan motor operation, and the refrigerant line connections. A dirty or damaged condenser coil is one of the more common reasons an outdoor unit runs but fails to cool the space effectively in Claremont's summer heat. The findings are reported before any repair is agreed.
The indoor check covers the evaporator coil, the blower motor and wheel, the filter condition, the condensate drain, and the electrical connections at the air handler. A restricted evaporator coil or a failing blower motor can reduce airflow enough to cause the system to short-cycle or fail to reach the set temperature. Both the indoor and outdoor units are checked on the same visit when the symptom could involve either side.
A frozen coil blocks airflow through the system, which means conditioned air cannot reach the living space even though the compressor is running. The two most common causes are a refrigerant charge that is too low and an airflow restriction from a dirty filter or blocked return. Addressing only one without checking the other is how the same fault comes back, so both are confirmed before the repair is closed.
An AC that runs but doesn't cool is usually pointing to a refrigerant issue, a failing compressor, a dirty condenser coil that can't reject heat, or a system that was undersized for the space. In Claremont's inland climate, where summer temperatures regularly push past 90 degrees Fahrenheit, a system that was marginal to begin with will lose the battle by mid-afternoon. The diagnostic visit identifies which of those is the cause before any repair is recommended.
Warm air from the vents, a unit that cycles on and off every few minutes without cooling the space, unusual noise from the outdoor unit, or a system that trips the disconnect and won't restart are all signs that something needs attention. Ice forming on the refrigerant lines or the indoor coil is another indicator that the system is not operating within its normal parameters. Any of those symptoms is worth a diagnostic visit before the situation gets worse.
The technician goes through a systematic check of the components most likely to cause the reported symptom, then works outward from there. Refrigerant pressure, electrical readings, airflow measurements, and a visual inspection of the coil and heat exchanger all feed into the diagnosis. The scope of the repair is confirmed with the customer before any parts are ordered or work begins.
Clear access to the indoor air handler or furnace, the outdoor condenser or heat pump, and any ductwork access points is needed before the visit starts. If the air handler is in an attic or crawl space, the path to it should be open and unobstructed. Letting us know about any access complications on the call helps the visit go more smoothly once the technician is on site.
Permits are handled where the job needs them, and the requirement depends on the job type and the jurisdiction. For a full system replacement or a new ductless installation in Claremont or the surrounding Los Angeles County area, the permit question is addressed when the job is scoped. The customer is not left to manage that process separately.
Equipment installed in a tight attic, a low crawl space, or a rooftop location takes longer to access, inspect, and work on safely. Older systems may also use refrigerants or components that are harder to source or require additional handling steps. Those factors are identified during the scoping conversation and factored into the estimate before the visit is booked.
A pre-season inspection before Claremont's summer heat builds, or before the first cold nights of the heating season, catches small faults before they become failures. A system that sat unused through a mild winter can develop issues that only show up when it is asked to run hard. Scheduling a tune-up in spring for the AC and in early fall for the heating system is the practical way to stay ahead of those problems.
A MERV-13 filter captures a much larger share of the fine particulate matter that wildfire smoke carries compared to a standard residential filter. Before upgrading, the air handler's blower capacity is checked, because a higher-rated filter creates more resistance and not every system can handle it without a corresponding adjustment. We confirm the air handler can support the upgrade and install the right filter housing if the existing one needs to change.
A heat pump installation covers equipment sizing, refrigerant line sets, the air handler or coil replacement, and a thermostat upgrade to a control that can manage the heat pump's operating modes. The electrical circuit and disconnect are handled by a separate trade. We scope the heating and cooling side of the job on the call and handle permits where the installation requires them.
A ductless mini-split uses an indoor air handler mounted on the wall or ceiling connected to an outdoor compressor unit, with no ductwork required. A central AC installation connects to an existing air handler and distributes conditioned air through the duct system. For older Claremont homes without existing ductwork, a mini-split is often the more practical path, and the choice between the two is worked out during the scoping call.
We are open daily, 6:00 AM to 9:30 PM, for repair calls, installation quotes, seasonal maintenance, and emergency service across Claremont and the surrounding area.
Right diagnosis. Right repair. Right parts for your system.
The price is confirmed on the call before anything is scheduled. Whether you need an AC repaired, a furnace looked at, a new system quoted, or an emergency call handled, the process starts the same way.
Call (909) 929-7895 and we will take care of it.
Below is a plain look at the heating and cooling work we handle across Claremont and the surrounding area. Each row covers what the service involves, who it fits best, and one practical detail worth knowing before you call. Read through, find what matches your situation, and give us a call to go over the specifics.
| System Service | Scope of Work | Best For | Good to Know |
|---|---|---|---|
| Ductless Mini-Split Installation |
| Older Claremont homes without existing ductwork, room additions, and spaces where central air is not practical | A mini-split gives each zone independent temperature control, which helps when one room consistently runs hotter than the rest. |
| Heating & Furnace Repair |
| Homeowners with a furnace that blows cold air, short-cycles, or won't start on the first cold night | Older Claremont homes often run gas furnaces that sat unused through a warm winter and can develop faults before the first real cold stretch. |
| Ductwork Repair & Sealing |
| Homes with uneven temperatures, rooms that won't cool or heat, or a system that runs longer than it should | Ductwork is checked when symptoms point that way before the equipment itself is assumed to be the problem. |
| Heat Pump Electrification |
| Homeowners replacing aging gas equipment and looking at year-round efficiency in Claremont's climate zone | Mild winters here mean a heat pump handles heating loads efficiently without the heavy backup-heat demand that complicates the math in colder regions. |
| Heat Pump Repair & Service |
| Properties with an existing heat pump that runs constantly, trips the disconnect, or blows cold air in heating mode | Mild Claremont winters make heat pumps well-suited to this climate zone, and repair is often the right call before replacement is considered. |
| Indoor Air Quality & Air Filtration |
| Households affected by wildfire smoke, allergens, or a system that recirculates dust through the living space | During fire season, fine particulate levels across the eastern San Gabriel Valley can exceed what a standard MERV-8 filter handles. The air handler's blower capacity is checked before any filter upgrade is installed. |
| Full System Installation & Replacement |
| Homeowners replacing an aging or failed system, or properties getting central heating and cooling for the first time | Oversizing is a common mistake. A unit too large for the space short-cycles and leaves humidity behind, so sizing is confirmed before anything is ordered. |
| Seasonal Maintenance & Tune-Ups |
| Homeowners and property managers who want to catch small faults before they become emergency calls | A system that sat unused through a mild Claremont winter can develop issues that only surface when it is asked to run hard on the first hot day. |
| Thermostat & Smart Controls |
| Anyone dealing with a thermostat that misreads temperature, loses programming, or fails to trigger the system reliably | A properly calibrated control takes pressure off the equipment by running it only when conditions actually call for it. |
| Emergency HVAC Service |
| Any situation where the system has stopped working and waiting is not an option | We are available daily from 6:00 AM to 9:30 PM for emergency heating and cooling calls across Claremont and the surrounding area. |
| AC Repair & Service |
| Homes or businesses with an AC that stopped cooling, blows warm air, or won't turn on | Claremont summers push systems hard. A unit struggling in June rarely improves on its own by August. |
How do I know whether to repair or replace my HVAC system?
The age of the equipment, the cost of the repair relative to a replacement, and how the system has been performing all factor into that call. A system that is failing repeatedly or running inefficiently despite recent repairs is often a candidate for replacement. We go through the specifics on the call and give you a straight answer on what makes sense for your situation rather than defaulting to one answer or the other.
What are the signs that a furnace or AC is reaching the end of its useful life?
Frequent repairs, rising energy bills without a change in usage, uneven temperatures across the home, and a system that runs constantly but still can't keep up are all indicators. Equipment that is making new noises, short-cycling, or struggling to start is also worth a closer look. None of those symptoms on their own confirm replacement is needed, but they are worth a diagnostic visit to find out what is actually going on.
What does a seasonal tune-up actually cover?
For an AC tune-up, we check refrigerant pressure, clean the condenser and evaporator coils, inspect the electrical controls and capacitor, confirm airflow through the system, and look at the filter and condensate drain. A heating tune-up covers the heat exchanger, burner operation, blower motor, ignition system, and controls. The goal is to catch anything that would cause a failure when the system is running hard, before it actually fails.
System Checked Before Parts Are Quoted
We diagnose before we recommend. The refrigerant charge, electrical controls, coil condition, and airflow are all checked before any repair or replacement is proposed, so the quote reflects what the system actually needs.
Why is one room in my home consistently hotter or colder than the rest?
Uneven temperatures usually point to a ductwork issue, an airflow restriction, or a zoning problem rather than a failing system. A duct that is leaking, disconnected, or too small for the room it serves can starve that space of conditioned air. In homes without ductwork, a ductless mini-split gives that room its own independent control. We check the ductwork when that is the likely cause before assuming the equipment needs attention.
What do strange noises from an HVAC unit usually mean?
A rattling sound often points to a loose panel or debris in the cabinet. A grinding or squealing noise from the air handler usually involves the blower motor or its bearings. A banging sound from the outdoor unit can mean a loose or broken component in the compressor or fan assembly. Clicking that continues after startup can indicate a control or ignition issue on a furnace. Any new or unusual noise is worth a diagnostic visit before the underlying problem gets worse.
How does a dirty filter or coil affect system performance?
A clogged filter restricts airflow through the system, which forces the blower to work harder and reduces how much conditioned air reaches the living space. A dirty evaporator coil loses its ability to absorb heat efficiently, which can cause the coil to freeze over and block airflow entirely. A dirty condenser coil on the outdoor unit can't reject heat properly, which drives up the refrigerant pressure and puts stress on the compressor. Both are checked during a diagnostic visit when the symptoms suggest an airflow or efficiency problem.
Emergency No-Heat and No-Cool Calls Handled
We take emergency calls daily from 6:00 AM to 9:30 PM for situations where the system has stopped working and waiting is not an option. Landlords and property managers can call the same number.
What causes a system to short-cycle?
Short-cycling, where the system turns on and off every few minutes without completing a full heating or cooling cycle, usually points to one of a few causes. An oversized system will reach the thermostat setpoint too quickly and shut off before the space is properly conditioned. A refrigerant issue, a failing capacitor, or a dirty coil can also cause the system to cut out before the cycle finishes. Overheating from a blocked filter or restricted airflow is another common trigger on furnaces. The diagnostic visit identifies which of those applies before any repair is recommended.
Is older equipment worth repairing, or does age alone mean it should be replaced?
Age alone does not settle the question. A well-maintained system that develops a single straightforward fault is often worth repairing. A system that is failing repeatedly, using a refrigerant that is no longer widely available, or running so inefficiently that energy costs have climbed noticeably is a different situation. We look at what the repair involves and what the equipment's condition suggests before recommending one path or the other.
Code-Compliant Work on Every Job
Permits are handled where the job requires them, and the work is matched to the manufacturer's specification. You are not left to manage the permit process separately.
How does a heat pump compare to a gas furnace for heating in Claremont?
A heat pump moves heat rather than generating it, which makes it efficient in climates where winter temperatures stay moderate. Claremont's mild winters fit that profile well. A gas furnace generates more heat output per cycle, which matters more in colder regions where temperatures regularly drop well below freezing. For most Claremont properties replacing aging gas equipment, a heat pump handles the heating load efficiently and also covers cooling, which means one system does both jobs.
How do duct leaks raise energy bills?
When conditioned air escapes through gaps or disconnected sections in the ductwork before it reaches the living space, the system has to run longer to compensate. That extra runtime shows up directly on the energy bill. In an attic or crawl space, leaking ducts can also pull in unconditioned air from outside and mix it into the supply, which forces the system to work against the outdoor temperature rather than just maintaining the indoor setpoint. Sealing those leaks brings the system back to working as designed.
How long does a full system replacement typically take?
A straightforward replacement of an existing central system usually takes the better part of a day. Jobs that involve ductwork modifications, attic or crawl space access, or permit inspections may take longer. The timeline is worked out when the job is scoped so you know what to expect before anything is scheduled.
Call us to talk through your system, get a price, and get it on the schedule: (909) 929-7895.
(909) 929-7895