Rental properties and small commercial buildings along the San Mateo County coast have a particular set of HVAC demands. A unit that stops heating in the middle of a tenancy, a rooftop system on a small retail space that starts short cycling, or a building where one zone never matches the others are all calls we handle. We work with property managers and building operators in Half Moon Bay the same way we work with residential customers: scope the job on the phone, confirm the price before scheduling, and leave the system tested before the visit ends.
Homeowners in the area are a large part of the work too. Many homes here were built before central air conditioning was standard, and the combination of recent heat events and wildfire seasons has changed what people expect from their heating and cooling systems. Whether the need is a first-time cooling install, a heat pump upgrade, a furnace that stopped firing, or an air filtration improvement, we cover it.
We are open every day from 9:00 AM to 8:00 PM, and (650) 955-4592 is the number for both residential and commercial calls.
The price for any HVAC job depends on what the system turns out to be doing, what has to be reached to fix it, and whether repair or replacement is the better answer once the diagnostic is complete. Those three things are the variables. None of them can be settled without a visit, which is why the quote comes after the diagnostic, not before it.
What you get on the phone is the service-call or diagnostic fee, explained before anything is scheduled, and a clear description of what the visit covers. If the diagnostic points to a repair, the repair price is confirmed with you before any work proceeds. If it points toward replacement, that conversation happens on-site with the findings in front of both of you.
A few things that commonly shift a quote: whether the equipment is accessible or tucked into a space that adds time, whether parts need to be sourced, and whether the fault turns out to be in the equipment itself or in the ductwork or controls feeding it. Ask about any of those on the call and you will get a straight answer about how they factor in.
Before calling for a repair visit, check that the thermostat is set to the correct mode and that the temperature setting is where you expect it. A thermostat that has been switched from heat to cool, or one whose batteries have failed, is the whole problem often enough to be worth thirty seconds of your time. If the system is not responding at all, check the circuit breaker serving the unit. A tripped breaker is not always a sign of something deeper, and resetting it costs nothing.
A clogged filter restricts airflow enough to cause a system to short cycle, to freeze the evaporator coil, or to run constantly without satisfying the thermostat. Pull the filter and look at it. If it is visibly blocked, replacing it before the visit is worth doing. It will not always solve the problem, but it removes a variable and can sometimes change the diagnosis.
When you call, have a few things ready: what the system is doing or not doing, how long it has been that way, and whether anything changed before it started. That information lets us scope the visit on the phone and confirm what it covers before anyone comes out.
The call is where the job takes shape. We will ask what the system is doing, what kind of equipment you have if you know it, and whether the problem is affecting the whole property or one area. That conversation is not a formality. It is how we scope the visit so the price we confirm reflects what the work actually involves.
A system check ends with the readings reviewed with you, so you know what condition the equipment is in and what was found before the visit closes. That applies whether the call is a repair, a tune-up, or a diagnostic on a system that has been underperforming. You are not handed a summary after the fact. The findings are part of the visit itself.
Call (650) 955-4592 between 9:00 AM and 8:00 PM any day of the week.
The price is confirmed before scheduling, and the scope is settled before anyone comes out.
Uneven temperatures across a home are one of the most common complaints in older construction, and the fix is rarely the equipment itself. Vent and register rebalancing starts with an airflow assessment to find where the distribution is breaking down. Damper adjustment, register repositioning, and duct sealing often bring rooms that have always been too hot or too cold into line without touching the air handler.
A system that runs continuously and never reaches the set temperature is working harder than it should and costing more than it needs to. The cause could be a refrigerant charge issue, a dirty coil, a failing component, or ductwork that is losing conditioned air before it reaches the room. The diagnostic covers all of those, and the repair is scoped from what is actually found rather than from a guess.
When a room is added or a garage is converted, the existing duct system was not designed to condition it. Ductwork design for an addition starts with a load calculation for the new space, then a plan for how to extend or modify the distribution without starving the rooms the system already serves. Getting the sizing right at the design stage matters more than the equipment choice.
A heat pump that stops heating in cold weather, or one that runs in defrost mode longer than it should, points to a short list of causes: refrigerant charge, reversing valve condition, outdoor coil condition, or a control issue with the defrost board. We diagnose both modes before settling on a repair path, because a heat pump that tests fine in cooling may still have a fault that only shows up in heating.
Rooftop package units on retail spaces and small commercial buildings in Half Moon Bay need the same diagnostic and maintenance work as residential equipment, but access and scheduling around business hours add a layer of planning. We work with building operators to confirm what the visit covers and when it can be done with the least disruption to the people using the space.
Wildfire seasons across the region have made indoor air quality a practical concern rather than an optional upgrade. Standard residential filters are not built to capture the fine particulate matter that smoke carries into a building. Upgrading to MERV-13 or higher filtration addresses that, but the existing air handler needs to be checked for compatibility first, because higher-rated filters restrict airflow more than standard ones. We assess what the system can support before recommending an upgrade, and we install whole-home air purifiers and UV systems where the situation calls for them. Humidifier and dehumidifier installation falls within scope too, for properties where moisture control is part of the comfort picture.
The regional push toward heat pump systems is showing up in Half Moon Bay in two ways: homeowners moving on from older gas furnaces, and homeowners adding cooling to a home that has never had it. A heat pump handles both from a single system, which makes it a practical answer to both needs at once. For homes without existing ductwork, a ductless mini-split installation avoids the cost and disruption of adding duct runs. We assess both paths and explain the tradeoffs before anything is ordered.
Emergency calls, short-notice requests, and planned maintenance appointments are all handled through the same number. If the property has no heat or no cooling at all, call and describe the situation. We take those calls seriously and scope the visit on the phone so the price is confirmed before anyone heads out, even on an urgent call.
For tenanted properties or commercial spaces that have to stay open, scheduling around occupancy is part of the planning conversation. Tell us the constraints when you call and we will work through what the schedule allows. We are open every day from 9:00 AM to 8:00 PM.
Work is carried out to code on every job, and the system is tested before the visit ends, whether the call is a repair, an installation, or a seasonal tune-up.
Half Moon Bay is our primary focus on this page, and we cover the surrounding coastside communities throughout San Mateo County as well. That includes El Granada, Moss Beach, Montara, Highlands, and Baywood Park. If your property is in the area and you are not sure whether we cover your address, a quick call settles it.
The work is the same regardless of which town the property is in: scope the job on the phone, confirm the price before scheduling, and leave the system tested before the visit ends. Anyone sizing up a job in Half Moon Bay may want to read the services page first.
Yes. Rooftop package units on retail spaces and small commercial buildings are within scope. The diagnostic and repair process is the same as for residential equipment, and we work around business hours where the property needs to stay open during the visit.
Call (650) 955-4592 to describe the unit and the situation, and we will confirm what the visit covers before scheduling.
Most residential replacements are completed in a single day. A more involved job, such as a first-time installation where ductwork is also being added, may take longer. The expected timeline is confirmed when the job is scoped, before anything is scheduled.
The marine environment along the San Mateo County coast introduces higher humidity and salt air, both of which can accelerate corrosion on outdoor condenser coils and electrical connections over time. During a maintenance visit, the outdoor unit condition is part of what gets checked, and any early signs of corrosion are noted in the findings reviewed with you before the visit closes.
Call us as soon as you know the date needs to change. We will confirm what the schedule allows and find an alternative. The earlier you call, the more options are available.
Call us and describe the situation. Scheduling service at multiple nearby addresses in a single visit is a conversation about what each property needs and what the schedule allows. It is worth asking about when you call.
Not necessarily. If the home has existing ductwork in good condition, a ducted central air system may be the right path. If there are no ducts, or the existing runs are too undersized or deteriorated to be worth extending, a ductless mini-split system installs without requiring new duct runs at all. We assess both options on the visit and explain what each one involves before anything is quoted.
Tell us what the system is doing, or not doing, and we will take it from there. The price is discussed on the phone before anything is scheduled. The scope is settled before anyone comes out.
Call Los Altos HVAC Company at (650) 955-4592 any day between 9:00 AM and 8:00 PM.
Clear answers. Real pricing. Real fast response.
Other towns where we take heating and cooling work: Hillsborough, Woodside, North Fair Oaks, Atherton, West Menlo Park. View our full service area.
Whether you are dealing with a system that stopped working this morning or planning a seasonal tune-up before temperatures shift, we cover the full range of residential and commercial heating-and-cooling work across Half Moon Bay and San Mateo County. The table below lays out what each service covers, who it fits best, and a practical note to help you decide where to start. Call us with any question and we will scope the job on the phone before anything is scheduled.
| Service Type | What It Covers | Common Needs | Things to Know |
|---|---|---|---|
| Seasonal Maintenance & Tune-Ups | Coil cleaning, Refrigerant level check, Electrical connection inspection, Filter assessment and full system test | Homeowners and property managers who want to catch small issues before they become failures mid-season | Scheduling a spring AC tune-up and a fall furnace check before each season starts means shorter wait times and fewer surprises when the system is needed most. |
| Heat Pump Repair & Service | Refrigerant charge check, Reversing valve inspection, Coil and compressor condition, Repair confirmed before work proceeds | Properties where the heat pump has stopped heating or cooling, or short cycles through both modes | Heat pumps handle both heating and cooling from one system, so a fault in one mode often points to a shared component worth checking in both. |
| Full System Installation & ReplacementMost Popular | Load calculation for the space, Equipment selection based on actual building needs, Full installation scope breakdown, System tested before visit closes | Homes or commercial spaces where repair costs have climbed or efficiency has dropped enough to show up in energy bills | A load calculation sizes the new system to the building rather than matching the old unit. Oversized equipment short-cycles and undersized equipment runs constantly. |
Call us at (650) 955-4592 to talk through your system, get a straight answer on pricing, and schedule service that fits your timeline.
(650) 955-4592