Mequon is a city where the housing stock leans toward larger single-family homes, many of them on the older side, and where the equipment inside those homes reflects decades of different installation decisions. Some properties are still running the original forced-air gas furnace. Others have had additions built without ductwork to match, or systems that were replaced once and never serviced since. Whatever the situation, the work starts with understanding what is actually in the property before recommending anything.
We cover Mequon for the full range of heating and cooling work: furnace repair and replacement, heat pump installation and service, AC repair, ductwork repair and sealing, thermostat and smart-control upgrades, indoor air quality systems, and emergency calls when the heat or cooling stops entirely. We are open every day from 6:30 AM to 11:00 PM.
Call (414) 451-9289 for a quote.
In a city this size, a meaningful share of the homes we visit are running equipment that has seen more than one Wisconsin winter. That is not automatically a problem. A well-maintained furnace can run reliably for a long time. But age combined with deferred maintenance, original ductwork that was never sealed, or a thermostat that no longer communicates accurately with the system creates a different picture. Getting the diagnosis right is what the visit is for, and that means checking the full system rather than replacing the first component that looks worn.
Larger homes in Mequon often have comfort problems that a single-zone thermostat cannot solve. One end of the house runs warm. A finished basement stays cold. A second floor that gets morning sun overheats by afternoon. Zoning and comfort-control systems address that by dividing the home into independently controlled areas, each with its own temperature setting. The work involves the controls, the dampers in the ductwork, and confirming the equipment is sized to handle what the zoning asks of it.
Sometimes a homeowner calls us after a previous repair did not solve the problem, or after work was started and not completed. We take those calls. The approach is the same as any diagnostic visit: we look at what the system is doing now, not just what was done before. A repair that did not hold is usually pointing at something the first visit did not catch, and finding that thing is the job.
If you have been told the system needs to be replaced and you want another set of eyes on it before committing, that is a reasonable call to make. We scope the system, confirm what the equipment is actually doing, and give you a straight answer about whether replacement is the right move or whether a repair is still viable. The price of the visit is confirmed before anyone comes out. We'll confirm the repair with you before it goes ahead.
A portable air purifier treats one room. A whole-home filtration system integrates with the HVAC airflow and conditions the air as it moves through the house. For larger homes with forced-air systems, that difference is significant. Dust, allergens, and particulates that a standard filter passes through are captured before they recirculate. Installation ties into the existing air handler and ductwork, and the result is consistent across every room the system serves.
Forced-air heating and a long regional winter are a combination that drives indoor humidity very low. The air becomes dry enough to cause discomfort, static buildup, and stress on wood floors, trim, and furniture over time. A whole-home humidifier integrates directly with the furnace and duct system, adding moisture to the circulating air and holding it at a consistent level through the heating season. It is one of the more practical upgrades for a forced-air home in this part of Wisconsin, and the comfort difference through a cold stretch is immediate.
We know schedules shift, so we keep your booking flexible. When you call, the visit is scoped on the phone: what the system is doing, what equipment is involved, and what the rate covers. That conversation happens before anything is scheduled, so there are no unknowns when the technician arrives.
For properties with no heat, the call moves quickly. A no-heat situation in an Ozaukee County winter is not a call that waits. We take short-notice and emergency work every day from 6:30 AM to 11:00 PM, and availability is confirmed when you call. For rental properties or commercial spaces that need to stay occupied and operational, we discuss access and timing on the call and work around what the property requires. One call gets the whole thing moving.
A furnace that starts and then shuts off, or one that attempts to light and fails, is often pointing at the ignition system or the flame sensor. A dirty or failing flame sensor causes the burner to light and then cut out within seconds, because the sensor cannot confirm a stable flame. Ignition faults follow a similar pattern. The diagnostic visit identifies which component is involved before any part is replaced.
A coil that has accumulated enough dust and debris restricts airflow and reduces the system's ability to transfer heat. The result shows up as reduced cooling, higher energy bills, or in colder months, a coil that begins to ice over. Cleaning restores airflow and efficiency. If the coil has developed a refrigerant leak, refrigerant leak diagnosis is part of the same visit, because adding refrigerant without finding the leak means the problem comes back.
A furnace that has stopped heating is the most urgent call we take. The diagnostic covers heat exchanger condition, burner and ignition performance, airflow through the supply and return, and thermostat communication. Each of those components tells a different part of the story. Code-compliant HVAC work is the standard on every furnace job, whether the outcome is a repair or a full replacement.
When one part of the house is comfortable and another is not, the cause is usually in the ductwork, the equipment sizing, or the control setup. Leaking ducts lose conditioned air before it reaches the rooms farthest from the air handler. An undersized system runs constantly and still cannot satisfy the load. Ductwork repair and sealing addresses the distribution side. Zoning addresses the control side. We work through which one applies before recommending a fix.
A system that runs without ever reaching the set temperature is either undersized for the space, losing conditioned air through duct leaks, or has a component that is not performing correctly. Energy-efficiency upgrades sometimes follow from that diagnosis, when the equipment itself is the limiting factor. The visit works through each possibility in order.
Water around the indoor unit is almost always a condensate issue. The drain line has blocked, the drain pan has cracked, or the coil is producing more condensate than the drain can handle. Left unaddressed, standing water causes damage to the equipment and the surrounding structure. The visit identifies where the blockage or the failure is and clears it.
The rate for a visit is confirmed on the call, before anything is scheduled. What can change the total is what the diagnostic actually finds. A straightforward flame sensor replacement is a different job from a heat exchanger that has failed and requires a furnace replacement. The depth of access required, whether a part needs to be sourced, and whether a repair or a replacement is the better answer all factor in.
We give you the scope and the price before any work proceeds. If the diagnostic uncovers something that changes what the job involves, we confirm the updated scope with you before moving forward. Nothing goes ahead without your agreement on what has been agreed. Your home deserves heating and cooling that runs right, and that starts with knowing what the job actually is before committing to it.
Call (414) 451-9289 and ask what it covers. You get a straight answer.
We cover Mequon and the surrounding Ozaukee County area. Homeowners and property managers in Thiensville, Brown Deer, River Hills, Germantown, and Bayside call us for the same heating and cooling work we handle in Mequon. If you are not sure whether your address falls within the area, call and ask. The parts people usually ask about are covered on our page listing every HVAC service.
Often yes. An addition increases the conditioned square footage, which can exceed the capacity of the existing system. Whether the existing equipment can handle the added load, whether the ductwork needs to be extended, or whether a supplemental system such as a mini-split is the right answer depends on the size of the addition and the current system. Call and describe the situation so we can scope the assessment.
Yes. A thermostat upgrade is a standalone job that does not require any other work to be done at the same time. If the current control is not communicating correctly with the system or you want to move to a smart thermostat, call and we will scope the visit and confirm the rate.
A repair that did not last is usually the result of a misdiagnosis, a part that was not the root cause, or a related issue that was not addressed at the same time. When we come out after a previous repair has failed, the diagnostic starts from the beginning rather than assuming the earlier assessment was correct.
Yes. A ductless mini-split system handles both heating and cooling without requiring ductwork, and it can be installed in a single zone or multiple zones depending on the layout of the property. Call and describe the space so we can scope the options.
It depends on the time of year and how long the installation takes. A full system replacement means the heating or cooling is offline for the duration of the work. For replacements scheduled in mild weather, that is rarely an issue. For urgent replacements in the middle of winter or summer, we discuss the timing on the call.
It can be either, and sometimes both. Duct leaks lose conditioned air before it reaches the rooms farthest from the air handler, which shows up as weak airflow at certain registers. Zoning problems show up differently: the airflow is adequate, but the controls cannot direct it where it is needed at the right time. The diagnostic visit works through both possibilities, because treating one without checking the other often leaves part of the problem in place.
Call (414) 451-9289 and describe what the house is doing, and we can scope the visit from there.
We work with property managers and landlords on both reactive repair calls and planned maintenance. When a tenant reports a no-heat or no-cool situation, the rate and scope are confirmed with you before the visit is scheduled, and access arrangements are worked out on the call. We do not require the property owner to be on site, as long as someone can provide access to the equipment.
Call (414) 451-9289 to discuss how the work is handled for your properties.
Reach out to West Allis HVAC Company when the system stops working, when a repair did not hold, or when you want to know what the equipment is actually doing before making a decision. A few questions on the phone, a confirmed rate, and a visit scoped to your property. That is how it starts.
Call (414) 451-9289. We are open every day from 6:30 AM to 11:00 PM.
See our service map. We serve these towns nearby as well: Germantown, Bayside, Cedarburg, Grafton.
We handle the full range of heating and cooling work for homes and commercial properties across Mequon and Ozaukee County. The table below lays out what each service covers, who it fits best, and a practical note to help you decide what to schedule. Call us with any questions and we will scope the job on the call before anything is booked.
| Service | What It Covers | Common Needs | Helpful Details |
|---|---|---|---|
| Seasonal Maintenance & Tune-Ups |
| Homeowners who want to catch small issues before a no-heat or no-cool call | Fall is the right time to tune the furnace before the heating season. Spring is the right time to check the AC before the first hot stretch arrives. |
| Thermostat Installation & Smart Controls |
| Homeowners upgrading controls or troubleshooting a system that behaves erratically | A thermostat that is not reading the system correctly can cause problems that look like equipment failures. We check it as part of every diagnostic. |
| HVAC System Installation & ReplacementMost Popular |
| Homeowners replacing aging equipment or upgrading to a higher-efficiency system | Equipment is sized for the home before installation begins. The thermostat is confirmed as communicating before sign-off so the whole system is verified. |
Call us at (414) 451-9289 to get a quote, ask about a specific service, or schedule a repair. We are available every day from 6:30 AM to 11:00 PM.
(414) 451-9289