When something goes wrong with the heating or cooling in a San Lorenzo home, the question is usually the same: how quickly can someone get out here. For a planned installation or a system replacement, booking a few days ahead is typical. For a system that has stopped working entirely, call as soon as you can and we will scope the job on the phone, confirm the price, and get a visit on the calendar. We are open every day from 9:00 AM to 8:00 PM.
San Lorenzo has a mix of older ranch-style homes and mid-century construction, and a lot of that housing stock is still running on equipment that was installed well before cooling became a priority in this part of Alameda County. Whether you own the property, manage it for someone else, or are a tenant who needs to reach whoever handles the building, the process is the same. Call, describe what the system is doing, and we take it from there.
For routine maintenance, a seasonal tune-up, or a system replacement you have been weighing for a while, we schedule visits ahead and confirm what the appointment covers before the day arrives. The price is discussed on the call, not after someone is already at the door. That applies whether it is a first-time AC install, a heat pump replacement, or a ductwork inspection.
When the heat or the AC quits entirely, the visit gets treated differently. A no-heat or no-cool call is an emergency, and we take those calls seriously. The diagnostic is scoped on the phone, the rate is explained before anything is dispatched, and the visit is arranged as quickly as the schedule allows. We are open every day from 9:00 AM to 8:00 PM, including weekends.
A rental unit with no heat is a different kind of pressure than a vacant property. When access has to be arranged around a tenant's schedule, or when a commercial space has to stay open during the visit, we work around that. Confirm the access situation when you call and we will factor it into how the visit is set up.
The price for a visit is not something we hold back until the work is done. When you call, you get the diagnostic or service-call rate explained before anything is scheduled. Once the technician has looked at the system and identified what is wrong, the repair or replacement cost is confirmed before any work proceeds. You agree to the price first.
What moves a quote is the nature of the fault, how accessible the equipment is, and whether a repair is the right answer or a replacement makes more sense given the system's age and condition. None of that can be settled before the visit, which is why the price is confirmed on-site rather than guessed at over the phone. What you will not get is a number that changes after the fact without your agreement.
A system that starts making a sound it did not make before is usually flagging something specific. Banging points toward a mechanical issue inside the air handler or furnace. Rattling often traces to loose panels or debris in the system. Squealing from a blower motor is a different problem from squealing at the compressor. The diagnostic visit identifies which component is producing the sound and why, rather than treating the noise as the problem itself.
A system that runs continuously without bringing the temperature down is one of the more common calls in this area. The causes are usually a refrigerant charge that has dropped due to a slow leak, a condenser coil that is blocked or dirty, or a compressor that is not operating at full capacity. The visit covers all three, and the repair is confirmed before any work proceeds.
A furnace that starts and then shuts off quickly, or one that will not ignite at all, often points to a flame sensor that has accumulated residue or an ignitor that is failing. These are not dramatic failures, but they do mean no heat, and they tend to get worse rather than better if left alone. The visit covers the ignition system, the flame sensor, and the gas valve to identify where the fault actually sits.
Beyond ignition, a furnace that is not heating can involve the heat exchanger, the blower, the control board, or the pressure switches. The diagnostic covers the full sequence the furnace runs through on startup, so the failure point is identified rather than guessed at. If the heat exchanger is cracked, that changes the conversation from repair to replacement, and we explain why before anything is agreed.
A home where one room is always too hot and another is always too cold is often a zoning problem rather than an equipment problem. Zoning systems use dampers and separate thermostats to direct conditioned air where it is actually needed. Installing or repairing a zoning system involves the ductwork, the damper actuators, and the control wiring, and it is a different job from replacing a thermostat. If the issue is uneven comfort across the house, that is worth describing when you call so the visit is scoped correctly.
Hydronic heating systems, which move heated water through radiators or radiant panels to warm the living space, need the same kind of attention as forced-air systems. Circulation pump faults, zone valve failures, pressure issues, and thermostat problems all affect whether the heat reaches the rooms it is supposed to reach. This is space heating, which is our side of the work. Domestic water heaters, the equipment that heats the water you wash with, sit on the plumbing side and are not part of what we do.
If another company has already looked at the system and given you a quote that does not feel right, or recommended a replacement when you expected a repair, calling us for a second opinion is reasonable. We scope the job the same way we would on any other visit: diagnose first, explain what was found, and confirm the price before any work proceeds.
We also take over work that was started by someone else and not completed, or where a previous repair did not hold. The starting point is always the same. You do not need to know what is wrong before you call. Describe what the system is doing and what has already been tried, and we work from there.
For a managed property in San Lorenzo, the call usually comes from the landlord or property manager rather than the tenant. That is fine. We scope the job with whoever calls, confirm the price with whoever is authorizing the work, and arrange access around whoever is at the property. If a tenant needs to be present to let someone in, that gets noted when the visit is booked.
The invoice goes to whoever authorized the work. If the property manager needs clear notes on what was found and what was done, that is part of every visit. A landlord managing several units across Alameda County gets the same documentation on each job, which matters when a repair decision or a replacement decision needs to be explained to an owner.
The visit starts with the technician reviewing what you described on the call and looking at the system before drawing any conclusions. Nothing is quoted until the diagnostic is complete. Once the fault is identified, the repair or replacement option is explained in plain terms, the price is confirmed, and you decide whether to proceed.
Work is carried out to code on every job, and the system is tested before the visit ends. That means running the equipment through its full cycle and confirming the problem is resolved before anyone leaves. If something else is found during the visit that was not part of the original scope, it is explained and priced separately before any additional work begins.
We serve San Lorenzo and the surrounding communities throughout Alameda County. That includes Ashland, Cherryland, San Leandro, Hayward, and Castro Valley. Both residential and commercial properties across the area are within our service range.
If you are not sure whether your address falls within reach, a quick call settles it. We cover the area, and the answer is usually yes. The parts people usually ask about are covered on the HVAC service list.
Clear access to the indoor unit location, the outdoor unit location, and the path between them. That means moving stored items, furniture, or anything that blocks the equipment or the route the installer needs to carry equipment through. We confirm what access is needed when the job is scheduled.
The options are explained clearly on the call and confirmed in the notes from the visit. If the diagnostic turns up a situation where both repair and replacement are reasonable paths, we walk through what each covers, what it costs, and what the tradeoffs are before you decide anything.
During a repair visit, the system may need to be off for a portion of the work, but most repairs do not take long enough to significantly affect indoor temperature. A full replacement involves a longer offline period, and we plan the work to keep that window as short as possible.
Call us directly and describe what the tenant has reported. We scope the job on the phone, explain the diagnostic rate, and arrange the visit around whoever has access to the property. If the tenant needs to be present for access, we factor that into the scheduling. The price is confirmed before the technician heads out, and the invoice goes to whoever authorized the work.
We cannot guarantee the same individual on a follow-up visit, but the notes from the original visit travel with the job so whoever comes out has a clear record of what was found and what was done.
Not always. If the existing thermostat is compatible with the new equipment and functioning correctly, it can stay in place. If the new system requires a different wiring configuration or a more capable control, we explain the options and confirm the decision before anything is ordered.
The first step is understanding what the existing structure can support. Homes without ductwork, or with duct runs that were never designed for cooling loads, are often better served by a ductless mini-split system, which conditions individual rooms without requiring new duct runs through walls and ceilings. If there is existing ductwork in reasonable condition, a ducted central air installation may be the more straightforward path. Call and describe the property and we will scope which direction makes sense before anything is quoted.
Describe what the system is doing, what kind of property it is in, and whether it is a repair or a new install you are thinking about. That is enough to get started.
Call (650) 955-4592. We are open every day from 9:00 AM to 8:00 PM.
You can reach us at (650) 955-4592 or at [email protected].
Just as close, we take heating and cooling work in: Ashland, Dublin, North Fair Oaks, Atherton. There is more on 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 San Lorenzo and Alameda 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 |
|---|---|---|---|
| Heating & Furnace Repair | Heat exchanger inspection, Ignition system and burner check, Airflow path and filter review, Diagnosis before repair is quoted | Homes with no heat, unusual furnace noises, or a system blowing cold air | A burning smell at the start of heating season can be dust on the heat exchanger. A persistent smell points to something that needs a diagnostic visit. |
| Wildfire-Smoke Air Filtration (MERV-13+) | Compatibility check on existing air handler, MERV-13 or higher filter installation, Airflow assessment after upgrade, Review of filter replacement schedule | Alameda County households affected by recurring wildfire smoke seasons who want filtration that goes beyond a standard residential filter | Standard one-inch filters are not rated to capture the fine particulates wildfire smoke carries. MERV-13 and higher addresses that gap, but the air handler needs to handle the added resistance without straining the blower. |
| 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