Claremont HVAC Company handles heating and cooling work for homes, rental properties, and commercial buildings across Claremont and the surrounding Los Angeles County area. Whether the call is about a system that stopped working, a first-time installation, a seasonal tune-up, or a full replacement, we cover the full range of residential and commercial HVAC service. We're available every day from 6:00 AM to 9:30 PM. Prompt scheduling. Pricing set out up front. Tidy workmanship.
Some homes need a full system replacement. Others just need a tune-up. We handle both, and everything in between.
When an AC stops cooling, the cause is not always obvious from the outside. A diagnostic visit covers the condenser, compressor, and refrigerant charge before any repair is recommended. Warm air blowing from the vents, a system that cycles on and off without cooling the space, or a unit that won't respond at all are all situations where a proper diagnosis comes first. We track down the problem fast.
Furnace problems follow a similar pattern. A furnace blowing cold air or failing to heat the space could point to the ignition system, the heat exchanger, or an airflow restriction. A visit covers each of those before anything is quoted or ordered.
Heat pumps add a layer of complexity because the same unit handles both heating and cooling. A reversing valve fault or a refrigerant issue can show up as either no heat or no cooling depending on the season. We diagnose both sides of the system on the same visit.
For full system installation and replacement, the work matched to the manufacturer's specification is how the equipment performs the way it should from day one. That applies whether the job is a new central AC, a replacement furnace, or a complete heat pump system.
Claremont sits at the foot of the San Gabriel Mountains in the eastern end of Los Angeles County, where summer temperatures push well above what the coast sees and wildfire smoke from the surrounding region arrives with little warning. That combination, hot dry summers, Santa Ana wind events, and increasing smoke days, shapes what heating and cooling work looks like here. The area is also in the middle of a strong regional push toward heat pump electrification, which is changing what replacement jobs involve.
A significant share of older homes in Claremont were built before central air conditioning was standard, and many still rely on window units or nothing at all. Adoption has risen sharply after recent record heat events across the Inland Valley, and first-time cooling installs are now among the most common jobs we handle. A ductless mini-split is often the right answer for a home without existing ductwork: an indoor air handler mounts on the wall or ceiling, connects to an outdoor compressor unit, and delivers cooling without tearing into walls or ceilings. Equipment sizing and installation scope are confirmed on the call before anything is scheduled. Permits handled where the job needs them. We'll take the details and get it scheduled.
During wildfire season, the San Gabriel Valley corridor can see air quality drop to hazardous levels within hours. Standard HVAC filters are not rated to capture the fine particulate matter that wildfire smoke carries. A MERV-13 or higher filter stops a much larger share of those particles before they circulate through the living space. We handle filter upgrades, media filter conversions, and whole-home air purifier and air scrubber installations, including UV air purifier options for an additional layer of protection. Indoor air quality is treated as part of the system, not a separate product category bolted on after the fact.
Los Angeles County has pushed hard on heat pump adoption, driven by utility incentives and air quality rules that are making gas furnace replacements less straightforward than they used to be. A heat pump installation covers equipment sizing, refrigerant line sets, and the air handler or coil replacement, along with a thermostat upgrade to a control that can manage the heat pump's operating modes. The electrical circuit and disconnect are a separate trade. We handle the heating and cooling unit and everything connected to it. A straight answer on repair against replacement is part of the call.
Staying ahead of HVAC problems keeps your home comfortable and keeps repair costs from compounding.
A standard tune-up covers coil cleaning, refrigerant level check, airflow measurement, thermostat calibration, filter inspection, and a visual check of ductwork connections. Ductwork checked when the symptoms point that way is part of how we approach a maintenance visit, not something saved for a separate appointment.
Spring is the right time to service the AC before Claremont's heat builds through June and July. Fall is the right time to confirm the heating system is ready before the first cold nights arrive. Scheduling either visit before the season starts means the system has been checked and confirmed, not just assumed to be working.
Property managers and building owners with multi-unit residential or commercial properties can schedule maintenance visits for rooftop units and commercial systems on a recurring basis. RTU filter service, coil inspection, and system checks for office and retail buildings are all part of what a commercial maintenance visit covers. Pick up the phone and we'll get started.
Your time matters, so we keep the HVAC job moving, and that includes the controls and the ductwork that the system depends on.
A thermostat that reads incorrectly, loses its settings, or fails to communicate with the air handler can make a perfectly functional system behave as though it's broken. We handle thermostat repair and replacement, wiring faults, and full smart thermostat installation and setup. Compatibility and cost are confirmed on the call before the visit is scheduled. Programmable and Wi-Fi-enabled controls are both options depending on what the system supports.
Leaking ductwork is one of the more common reasons a system runs longer than it should without reaching the set temperature. Rooms that are consistently warmer or cooler than the rest of the home, or airflow that feels weak at certain registers, often point to duct leaks or disconnected sections. Duct sealing and duct repair are part of the same visit when the inspection confirms that's where the problem is. We'll take the details and get it scheduled.
If you're not sure your system can keep up, that matters more in a commercial building where a failure affects tenants, customers, or operations.
We handle commercial HVAC work for office buildings, retail spaces, multi-unit residential properties, and light industrial facilities across Claremont and the eastern Los Angeles County area. Commercial AC repair, commercial heating repair, rooftop unit repair, RTU replacement, and commercial heat pump service are all part of the scope. A rooftop unit that stops cooling mid-summer or a commercial furnace that fails in January is an operational problem, not just a comfort issue.
Commercial HVAC quotes are handled on the call. Scope and pricing are confirmed before anything is scheduled, so there is no ambiguity about what the visit covers. Call and we'll get your heat or AC back on.
Keeping a home comfortable starts with a system that runs right, and knowing what the work costs before committing to it.
Repair quotes, replacement estimates, and installation costs are all scoped on the call before anything is scheduled. Diagnostic fees and service call costs are a normal part of the process and are explained up front. The cost of an AC repair depends on what the diagnostic finds. A replacement estimate depends on equipment size, system type, and what the installation involves. A heat pump installation cost is different from a furnace replacement cost. All of those questions get a real answer on the call, not a range so wide it tells you nothing.
Right diagnosis. Right repair. Right parts for your system.
An AC that stops working during a Claremont heat event or a heater that fails on a cold night is not something to wait out. We take emergency calls every day from 6:00 AM to 9:30 PM.
When you call about a system that is down, the call is answered by someone who knows the trade and can scope the fault on the phone. That means the visit is set up with the right information before anyone arrives, not after. Common emergencies include AC not cooling, no heat, a system that won't respond, or a heat pump that has stopped working on either side of its cycle.
We'll take the details and get it scheduled.
We serve Claremont and the communities throughout the eastern Los Angeles County area, including Pomona, La Verne, San Dimas, Glendora, Montclair, Upland, and Rancho Cucamonga. Both residential and commercial properties across the area are covered, from single-family homes to multi-unit buildings and commercial facilities.
We serve Claremont and the surrounding communities across the eastern San Gabriel Valley and Pomona Valley, including Pomona, La Verne, San Dimas, Upland, Montclair, Ontario, Rancho Cucamonga, Glendora, and Diamond Bar. The service area covers parts of both Los Angeles County and adjacent San Bernardino County. If you are outside that list but nearby, call and we will confirm whether the address falls within range.
It helps to know the equipment type, the brand and model if it is visible on the unit, and a description of what the system is doing or not doing. If you know the age of the equipment, that is useful too, though not required to get started. The more detail you can share on the call, the more accurately we can scope the visit and explain what it is likely to involve.
When you call, we go through what the system is doing and confirm the scope and cost of the visit before anything is booked. The visit is then arranged based on availability, and you will know what the visit covers before anyone arrives. There is no ambiguity about what you are agreeing to when the appointment is set.
The price depends on what the job involves: the type of equipment, the fault found during diagnosis, and the parts required. We explain the diagnostic fee and what the visit covers on the call, before anything is scheduled. For replacement or installation jobs, the estimate accounts for equipment size, system type, and installation complexity, and it is confirmed before any work begins.
The call gives you a clear picture of what the visit costs and what it covers. For repair work, the final price depends on what the diagnostic finds, so the confirmed repair cost comes after the technician has assessed the system. For installation and replacement jobs, the scope and price are agreed before the work starts so there is no uncertainty about what you are committing to.
We work across both property types throughout the Claremont area and the wider Los Angeles County region. Residential jobs range from single-room ductless installations to full system replacements in single-family homes. On the commercial side, we handle office buildings, retail spaces, and multi-unit residential properties, including rooftop unit repair and replacement.
A repair that uncovers a secondary fault, ductwork that needs attention alongside the equipment, or a system that requires hard-to-source parts can all add to the original estimate. The technician reports what is found before any additional work is agreed, so you are not surprised by a larger scope mid-visit. Asking what the quote covers and what falls outside it is always a reasonable question to raise on the call.
Someone needs to be present to provide access to the equipment, confirm the scope of the work, and agree to any repair before it starts. If you cannot be there yourself, another adult who can make decisions about the property works fine. If access is complicated, let us know when you call and we can discuss what is needed before the visit is scheduled.
System size and the square footage being conditioned both factor into installation and replacement costs, because the equipment has to be sized to the load. For repair work, the cost depends more on what the fault is and what parts are needed than on the size of the home. Either way, the specifics are worked out on the call before any visit is agreed.
We find the fault. We make the repair. We restore the comfort.
Claremont HVAC Company is available every day from 6:00 AM to 9:30 PM.
Call (909) 929-7895 for a quote on repair, installation, replacement, or maintenance.
Whether the job is a first-time cooling install, a heat pump replacement, a commercial rooftop unit, or a system that stopped working this morning, the call is where it starts.
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. |
Call us to talk through your system, get a price, and get it on the schedule: (909) 929-7895.
(909) 929-7895