When a system stops working in Boerne, the call that matters is the one that gets someone out quickly. Magnum Heating & A/C handles heating and cooling work across Boerne and Kendall County, from a repair call on a struggling AC to a full furnace and system replacement. We work with homeowners, rental property owners, and businesses of all sizes. Call (830) 590-9782 for a quote, and we will confirm pricing before anything is scheduled.
A town the size of Boerne carries a real mix of equipment: older homes on systems that have been running for years without a proper look, newer builds with smart controls that need someone who knows them, and commercial spaces that cannot afford a day without climate control. Whatever the property and whatever the system, the job starts the same way: a diagnosis, a clear explanation, and a price you hear before we schedule anything.
Calling an HVAC company doesn't have to be stressful, and the pricing conversation is part of that. When you call, we ask about the system, the symptoms, and the property. From there we give you a rate that reflects what the job actually involves, not a generic starting figure that grows once someone is on site.
A few things move a quote in one direction or another. What the fault turns out to be matters. Whether the equipment is accessible or tucked into a tight space matters. And whether a repair is the right answer or whether the system has reached the point where replacement makes more sense matters too. We walk through that honestly, because a repair that costs more than it saves is not a good outcome for anyone.
The price is confirmed before we schedule. If the scope changes once the technician is on the property, that conversation happens before any additional work begins. You get a straight answer when you ask what a quote covers.
Same-day service is often available, particularly for urgent situations where a system is completely down. Planned installations and non-urgent maintenance visits are scheduled based on what is available when you call. We are here every day from 9:00 AM to 9:00 PM, and that covers both the phone and the work itself.
For properties with no heating or no cooling at all, we treat those calls with the urgency they deserve and move them to the front of the line when same-day appointments are open. If you manage a rental or a commercial space where tenants or staff cannot simply wait, let us know when you call and we will work around what the situation requires.
We protect your home. We service your system. We earn the call.
A rooftop unit handles both the cooling and the heating for a lot of Boerne's smaller commercial buildings, and when one goes down, the whole space feels it. We diagnose rooftop unit failures, handle repairs, and replace units that have reached the end of their useful life. Sizing and installation follow the same standard we apply on every job: HVAC work sized and installed the way the manual calls for.
A cracked heat exchanger is not a visible problem from the outside, but it is one of the more serious things a furnace inspection can turn up. We inspect heat exchangers as part of a seasonal tune-up and as a standalone diagnostic when there is a reason to look more closely. The inspection matters because a compromised exchanger affects both comfort and air quality inside the home.
A standard filter handles the coarser particles that circulate through a duct system. A whole-home air filtration or purification system, installed as part of the HVAC setup, handles the finer material that a basic filter passes through. We install air purifiers, UV air treatment systems, and whole-home filtration that works alongside the existing equipment. In a region where humidity adds to the indoor air challenge, dehumidification is often part of the same conversation.
A brief burning smell at the start of the heating season is usually dust burning off the heat exchanger and clears on its own. A smell that persists, or one that comes back every time the system runs, points to something that needs a proper look: an overheating motor, a component under stress, or a moisture problem somewhere in the system or ductwork. We diagnose both. If the smell is musty rather than burning, moisture in the coil or the duct system is usually the starting point.
When one room in a home runs noticeably warmer or cooler than the rest, the system is not distributing air the way it should. Vent and register rebalancing addresses the delivery side of that problem: adjusting dampers, checking for obstructions, and correcting airflow through the duct system so the conditioned air reaches every part of the property. This work often pairs with duct sealing when leaks are contributing to the imbalance.
If you would rather read than call, our HVAC service guide has the detail.
A town with the housing mix Boerne carries produces a wide range of HVAC situations. An older home on its original equipment is a different call from a newer build with a zoning system and a smart thermostat. Understanding which situation you are in shapes what we do when we arrive. The service page carries the full breakdown of what each type of job involves.
A repair call starts with a diagnosis. The technician checks the system, identifies the fault, and explains what the fix involves before any work is authorized. Common repair situations include an AC that is running but not cooling, a furnace that is not igniting, a heat pump that has lost its heating function, or a blower motor that is moving air without the right force behind it. Condenser and compressor service, evaporator coil cleaning, and air handler checks all fall under this category. The goal is always to find the actual cause rather than address a symptom.
A system that is running fine is still worth a seasonal visit. A tune-up covers the components most likely to cause a problem before they actually do: refrigerant levels, coil condition, ignition, heat exchanger integrity, blower performance, and thermostat calibration. We check the furnace. We check the AC. We leave it running right. Scheduling maintenance before the peak cooling or heating season means any issue gets caught when the calendar is flexible, not when the system is already under load.
When repair costs stop making sense relative to what the system is worth, replacement is the honest answer. We assess the equipment, size the replacement correctly for the space, and handle the installation. In this region, the furnace-and-AC pairing remains the most common replacement scenario, and heat pump installation is an increasingly practical alternative for properties where the heating load stays moderate. We walk through both options when the situation calls for it.
A high-efficiency rating on a piece of equipment is a number measured under controlled conditions. What a property actually sees once the equipment is installed depends on more than the unit itself. Duct leakage, air handler sizing, thermostat placement, and how well the system is matched to the square footage and layout of the building all affect the real-world result.
We size and install equipment to match the property, not to hit a specification sheet number. A system that is too large for the space short-cycles, which means it never runs long enough to manage humidity properly. A system that is too small runs constantly and still does not reach the set temperature. Getting the sizing right is where the efficiency gain actually shows up in practice.
Zoning and comfort-control systems, smart thermostat installation, and energy-efficiency upgrades are part of the same conversation. A well-matched system with the right controls in place performs closer to what the rating promises. Call and we'll handle the furnace, the AC, and the ductwork.
Before calling, a few things are worth a look. None of them require tools, and any one of them can turn out to be the whole problem.
If none of those resolve it, call (830) 590-9782. We will ask a few questions and confirm what the visit will cover before we schedule anything. Your system is in good hands with us.
We provide HVAC service throughout Boerne and across Kendall County, including the surrounding communities of Fair Oaks Ranch, Scenic Oaks, Cross Mountain, Grey Forest, and Helotes. Whether the property is inside Boerne or in one of the neighboring areas, the work and the process are the same: a clear quote before scheduling, qualified technicians on the job, and code-compliant work from start to finish.
If you are in the area and unsure whether we reach your address, call (830) 590-9782 and we will confirm. Local means we care what the neighbors think of our work, and that applies across every community we cover.
Ice on HVAC equipment is almost always a sign of restricted airflow or a refrigerant problem. A clogged filter, a blocked coil, or low refrigerant from a leak can all cause the coil temperature to drop below freezing and ice to form. The system should be shut off and inspected rather than left running with ice on it.
A rattle usually means something is loose, whether that is a panel, a component inside the cabinet, or debris in the outdoor unit. A squeal most often points to a worn blower belt or a motor bearing that is starting to fail. Neither sound should be ignored, because the underlying cause tends to get worse the longer the system runs.
Yes. We can provide documentation of the work performed for a property file. If you manage multiple properties and need records kept for each address, let us know when you call and we will confirm how that is handled.
Humid summers put extra load on a cooling system because the equipment has to manage both temperature and moisture at the same time. A system that is not sized correctly for the space, or one with leaky ductwork, will struggle more noticeably when humidity is high. Whole-home dehumidification, installed alongside the existing HVAC equipment, takes some of that load off the air conditioner and improves how comfortable the space actually feels at a given temperature.
Yes. The scope of the work does not change which locations we serve. Whether the job is a repair call or a complete installation, the service area is the same.
We work with the schedule that fits the property. When you book, let us know the access situation and any constraints around the tenant's availability. We are available every day from 9:00 AM to 9:00 PM, which gives us flexibility to find a window that works.
Older homes in the area tend to arrive at the same crossroads: equipment that has been running for years starts breaking down more often, and the repair-versus-replace conversation becomes unavoidable. AC repairs during the long regional cooling season and furnace diagnostics before the colder months are the most common calls. Heat pump installation is increasingly part of the conversation for homeowners replacing aging furnace-and-AC setups.
Yes. We service and replace rooftop units on small commercial buildings, handle commercial AC and heating repairs, and perform commercial HVAC maintenance. If a business or rental property needs to stay operational while the work happens, let us know when you call and we will work around that requirement.
A system in a vacant property still benefits from a check before it is needed again. Equipment that has been sitting idle can develop issues that are not obvious until the system is asked to run. A pre-occupancy tune-up is a practical step before the property is used again, particularly after an extended vacancy.
Once a year at minimum, and twice a year is better. A fall check before the heating season and a spring check before the cooling season catch problems at the point when they are easiest and least expensive to address. Systems that run hard through long summers benefit from that pre-season attention.
Magnum Heating & A/C handles the full range of heating and cooling work for Boerne homes and businesses, from a diagnostic repair call to a complete system replacement. Pricing is explained before we schedule, and same-day service is often available. We are here every day from 9:00 AM to 9:00 PM.
If the system is down and the property has no heating or no cooling, call (830) 590-9782 now. We will confirm what is available and move your call forward. Affordable rates. Flexible timing. Reliable comfort.
We also take work in: Timberwood Park, Leon Valley, Alamo Heights.
From a fast AC repair to a full system replacement, we handle the complete range of heating and cooling work for homes and businesses in Boerne and across Kendall County. The table below covers what each service includes, who it fits best, and a practical note to help you decide where to start. Call (830) 590-9782 for a quote on any of these services.
| Service Type | Scope of Work | Common Needs | Helpful Details |
|---|---|---|---|
| Furnace & AC System Replacement |
| Homeowners whose repair costs are stacking up or whose system can no longer hold the set temperature | South Texas summers accelerate wear on older equipment, making timely replacement a practical choice |
| Heating & Furnace Repair |
| Any home or building that loses heat during a cold snap | Even mild Boerne winters can make a furnace failure urgent on the coldest nights |
| Seasonal Maintenance & Tune-Ups |
| Any homeowner who wants to prevent breakdowns before the next season arrives | A spring AC tune-up and a fall furnace check are the two visits that prevent the most expensive repairs |
| Indoor Air Quality & Air Filtration |
| Households concerned about dust, allergens, or airborne particles indoors | An air quality upgrade is straightforward to add when the system is already being serviced |
| Ductwork Repair & Sealing |
| Homes where the system runs constantly but comfort is uneven from room to room | Sealing the duct system often makes a bigger difference in comfort than replacing equipment |
| Heat Pump Repair & Service |
| Homes running a heat pump for both heating and cooling | Heat pumps are a common fit in South Texas and benefit from annual inspection of both modes |
| Whole-Home Dehumidification & Humidity Control |
| Kendall County homes where high ambient humidity makes the indoor air feel uncomfortable even at the right temperature | Managing indoor humidity reduces extra load on the cooling system and improves overall comfort |
| Emergency HVAC Service |
| Any home or building where the HVAC system has stopped working and waiting is not an option | We take emergency calls every day from 9:00 AM to 9:00 PM and offer same-day service when available |
| AC Repair & Service |
| Homeowners and property managers whose AC stopped cooling or is underperforming | Same-day service is often available when the system goes down during peak summer heat |
| Thermostat & Smart-Control Installation |
| Anyone who wants better visibility and control over indoor temperature | A thermostat upgrade pairs well with ductwork improvements for room-by-room comfort control |
| Full System Installation & ReplacementMost Popular |
| Homeowners and commercial property owners replacing aging or failing equipment | We go over installation and replacement costs in plain terms before anything is scheduled |
| Heat Pump Installation |
| Homeowners replacing an older system or adding comfort to a new space in a mild-winter climate | Boerne winters are mild enough that a heat pump handles both seasons efficiently from a single system |
Call (830) 590-9782 to talk through your system, get a straight answer on what it needs, and schedule service at a time that works for you.
(830) 590-9782