Replace a failing Senville mini split in Austin

Updated September 2026 · ATX Mini Split King, Austin and Central Texas

When a Senville mini split in an Austin home stops doing its job, the next question is usually whether to repair it or take it out. ATX Mini Split King is an independent HVAC and electrical contractor in Austin and Central Texas. We remove the equipment you already own and install a new ductless system when that is the better path. Work is done to code by a TDLR licensed contractor. Call (512) 297-7493.

ATX Mini Split King is an independent HVAC and electrical contractor. We are not affiliated with, endorsed by, or a representative of Senville or any manufacturer. The Senville name appears here only to describe equipment that may already be installed in your home and that we can remove and replace. All manufacturer names are the property of their owners.

Flat pricing, everything included

Those are materials and labor together, wired to code by a TDLR licensed contractor. Anything non standard gets quoted first, before a single tool comes out of the truck: a very long line set, an electrical panel that needs work, a difficult mount, a roof or masonry penetration, disposal of the old equipment. You hear the number before we start, not after.

Why Austin homeowners look at replacement

A homeowner usually arrives at this page because the Senville unit already on the wall is not cooling a room the way it used to. In Central Texas that matters. Summers run long and hot, and a bedroom, addition, or converted garage that will not hold temperature is hard to live with. The indoor head may run without much cold air. The outdoor unit may start and stop in short bursts, which is called short cycling. The system may have gotten loud, with rattles, vibration, or a fan that never settles. Age is another reason people call. None of those symptoms, by themselves, prove what the next step should be. They only tell you that the equipment you own is not meeting the load of the space.

A repair quote that came back high is the other common trigger. Someone looked at a board, a fan motor, a leak, or a compressor and the number to keep the existing machine running was larger than expected. That quote can still be the right call. It can also be a signal to stop putting money into hardware that you plan to take down soon anyway. ATX Mini Split King does not sell repairs as a brand story and does not talk down the unit on your wall. We look at the house, the electrical, and the actual fault. Older Austin housing, sun on west walls, and rooms that were never designed for a ductless head all change how a failing unit feels in July. Winters here are short and mild, so heating complaints are less often the reason people replace, though they do happen.

When repair is the smarter money, and when it is not

Repair versus replace is a money and time decision, not a loyalty decision. If the Senville equipment on site has a clear, cheap fault, the indoor coil is clean, the line set is sound, and the outdoor unit is otherwise running, paying for a part and labor can be the cheaper path. That is especially true when the space is small, the homeowner plans to sell soon, or the rest of the house already has working air. A leaking service valve, a failed fan capacitor, a clogged condensate pump, or a control board that can be swapped without opening the refrigeration circuit are examples where repair often wins. ATX Mini Split King will say so when that is the case. Keeping what you have also avoids opening walls, pulling new wire, and living through a changeover day.

Replacement starts to make sense when the repair would consume a large share of a new install, when the indoor and outdoor pieces both need work, or when the layout no longer matches how the house is used. Additions and converted garages in Austin often outgrow a single head that was hung years ago. If you now need two rooms conditioned, or the condenser sits in a bad air path, a new system lets you fix placement instead of chasing the old one. Drawbacks are real. You pay more on day one. You may need a new circuit or a different pad. Dust and noise happen during the swap. A ductless system is also the wrong answer for some houses. If you have a sound ducted system that only needs a new air handler, forcing mini splits into every room is extra cost and extra outdoor units for little gain.

There is a middle case. Recover refrigerant, cap the lines, and leave the hole and pad for later if you are not ready to buy. That is not free, but it is cheaper than a full swap you do not want. We will not push a replacement to fill a calendar. Independent contractors who also pull electrical permits can tell you if the panel even has room for another condenser. If it does not, the true cost of replace includes service work that has nothing to do with the indoor head. Ask for that picture before you decide.

What you can keep from the old install, and what you cannot

People hope the outdoor pad, the hole through the wall, the copper line set, the disconnect, the circuit, the indoor mounting bracket, and the condensate route will all serve the next machine. Some of that is true some of the time. A level concrete pad or a composite pad in good shape can stay if the new condenser footprint fits and the setbacks from the property line and the house still work. The wall penetration can stay if it is the right height, still sealed, and not rotting the sheathing around it. In older Austin houses, that hole often sits in fiber-cement or wood siding that has already been cut once. Reusing it saves patching. If the new head is a different size or you want it in another room, the old hole gets closed and a new one gets drilled with a proper sleeve and exterior seal.

Line sets are the piece homeowners most want to reuse. Copper that is the correct diameters, the correct length, uncollapsed, and clean can sometimes stay after a nitrogen purge, new flare or braze, and a pressure test. Flares that are old, oil-soaked insulation, kinks behind the head, or lines that were buried in a way you cannot inspect are reasons to pull new copper. Mixing leftover oil and debris into a new circuit is a real way to damage a compressor on day one. The disconnect and the circuit are electrical, not refrigeration. If the breaker size, wire gauge, and disconnect rating match the new outdoor unit nameplate, and the run is still in good conduit or cable, they can remain. If the new condenser draws more, or the old whip is cracked, that work is quoted before we start.

The indoor mounting bracket almost never carries over. Head chassis differ. Using the wrong plate leaves the unit unlevel, which ruins condensate drainage. The condensate route is a gravity line or a pump to a standpipe, laundry sink, or exterior. If the old PVC still slopes, is not full of algae, and still reaches a legal dump point, it can stay. Pumps fail and get replaced as their own item. In a converted garage, the drain often was a quick hose out the wall. That may not meet code now and may not be quoted in a flat job if we have to add a pump or a longer pipe run. ATX Mini Split King treats reuse as an inspection result, not a promise. You hear what stays and what goes before tools come out.

What replacement day looks like, and what you decide first

Before anyone arrives, the homeowner decides three things that lock the job. Where each indoor head goes, how many zones the house actually needs, and where the condenser sits. Head placement is about throw of air, wall structure, and condensate. A head over a door can work. A head opposite a bed can be drafty. Zone count is not the same as room count. An open living area may take one head. A closed office and a converted garage are usually two. The condenser needs airflow, a path for the line set, distance from bedrooms if noise bothers you, and a legal location relative to the meter and property lines. Moving a condenser from a side yard to a back pad is a decision, not an afterthought. Get those choices on paper. Changing them at noon costs time and may change the quote.

On the day, the crew recovers refrigerant from the Senville equipment, disconnects power, and takes down the indoor head and outdoor unit. Lines are pulled or reused based on the inspection you already heard. The old bracket comes off. The wall is patched at unused holes or prepped for the new sleeve. New heads go on, lines are flared or brazed, the system is pressure tested with nitrogen, evacuated, and charged to the outdoor nameplate. Electrical is landed at the disconnect and the air handler. Condensate is tied in and tested with water. The old equipment leaves the site. Expect noise outside and dust near the wall chase. Pets and kids need a plan. Work is done to code by a TDLR licensed contractor. If a new circuit is part of the job, that happens in sequence so the condenser is not left unpowered overnight.

Startup is not the end of your involvement. You learn how to set the remote, how to clean the filters, and where the condensate goes if it ever overflows. In a long Austin summer the filters load faster on a dusty lot or a house with dogs. We leave the site swept. We do not leave refrigerant bottles, copper scraps, or the old Senville outdoor unit in the driveway. If a permit was required, inspections happen on the city's schedule, not ours. That wait is a real drawback when you are hot. A window unit or a hotel night is sometimes the honest backup. Call (512) 297-7493 if the sequence needs to be planned around a heat wave.

Flat pricing, what is included, and what is quoted first

ATX Mini Split King prices a standard replacement as a flat figure for materials and labor. One indoor head is $1,500. Two indoor heads are $2,500. Three indoor heads are $3,500. Those numbers assume a straightforward swap on a house we can access, with the condenser on a usable pad, a wall we can penetrate or reuse, and electrical that already matches. Included is recovery and haul off of the existing Senville indoor and outdoor equipment, the new ductless system, line work for a normal run, the indoor heads, the outdoor unit, basic condensate, startup, and the labor to put it on the wall and on the pad. The figure is not a teaser. If the job is standard, that is what you pay.

Anything non standard is quoted before any work starts. That list is longer than people expect. A new circuit from a full panel, a disconnect that must be relocated, a line set that has to travel two stories or across a metal roof, a condensate pump because gravity will not work, stucco or stone drilling, interior soffits, a crane or extra labor for a tight side yard, asbestos or lead paint concerns in older housing, and moving a condenser off a neighbor's setback are all extras. We write those down with a price before we cut. If we cannot see the attic or the panel, we say so and we do not pretend the flat number still holds. Honesty here avoids a fight on the driveway.

Central Texas heat does not change the price table, but it does change scheduling. Mid summer work on a west wall is slower and hotter for the crew. We still do it. We do not add a heat surcharge as a surprise. Permits, if the city of Austin or another Central Texas jurisdiction requires them for the electrical or the mechanical, are discussed up front. Permit fees themselves are not stuffed into the $1,500, $2,500, or $3,500 figures when the city charges them separately. You will know. ATX Mini Split King is an independent HVAC and electrical contractor. There is no factory relationship of any kind with the brand coming off the wall. That independence is why we can tell you to repair instead of replace when the math says so.

Questions to ask an installer, and when to keep what you have

Ask any installer, including us, the same set of questions. Who holds the TDLR license that covers the mechanical and the electrical on this job? Will you pull a permit if the city requires one? What exactly is in the flat number, and what will you quote before you cut the wall? Can the existing pad, line set, disconnect, circuit, penetration, bracket, and drain stay, and how will you test that? Where will the condenser sit, and have you looked at setbacks and airflow? What happens if you open the line set and find contamination? Who is on site, and do they leave the old equipment? If the answer to license or permit is vague, stop. Work done off the books is a problem when a future buyer or an inspector looks at the panel.

Keeping the existing equipment is the better decision when a modest repair restores cooling, when you are months from a move, when the electrical service cannot take another condenser without a panel upgrade you do not want, or when a mini split is not the right fit. Wrong tool means you already have ducts that work, you need even air in a large open plan that one or two heads will not cover well, or you refuse the look of a wall cassette. Window units and portable units are ugly and loud, but they are honest for a spare room you rarely use. A new central system can be the cleaner answer for a whole house, even if it costs more than one ductless head. We will say that. Independent advice only has value if it sometimes talks you out of our own work.

If you do hire ATX Mini Split King, you are hiring an independent contractor in Austin and Central Texas, not a factory channel. We remove the Senville unit you already own. We do not speak for that brand, train under it, or claim any tie to it. The replacement is sized and placed for your rooms, your sun, and your panel. Long summers here mean the outdoor unit will run many hours. Shade, coil cleaning, and a clear pad matter more than slogans. Short winters mean heating is a secondary use for most of these systems, not the reason to buy. Call (512) 297-7493 with the symptoms, the age of what is on the wall, and a photo of the outdoor disconnect. We will tell you if repair, replace, or leave it alone is the straight path.

Questions people actually ask

Can you repair my Senville mini split instead of replacing it?

Yes, when the fault is limited and the rest of the system is sound. A capacitor, a fan motor, a drain, or a board can be the cheaper path. ATX Mini Split King will say so. Replacement makes more sense when both the indoor and outdoor sides need work, when the repair quote is close to a new install, or when you need a different layout. We do not claim anything about that brand as a class. We look at the unit on your wall and the rooms it serves. Call (512) 297-7493 with what you are seeing.

Will you reuse my pad, lines, and electrical?

Sometimes. A sound pad, a clean line set of the right diameters, a matching breaker and disconnect, and a wall hole at the right height can stay after testing. The indoor bracket almost never stays because heads do not share plates. Condensate stays if it still slopes to a legal dump. Contamination in copper, a cracked whip, or a hole in rotting siding means new work, quoted before we start. Reuse is an inspection result. It is not included as a promise inside the flat figure.

What do the $1,500, $2,500, and $3,500 prices cover?

One indoor head is $1,500, two are $2,500, and three are $3,500, materials and labor included for a standard replacement. That covers taking down the old Senville equipment, installing the new ductless system, normal line work, basic condensate, electrical landing on an existing matching circuit, and startup. Non standard items such as a new circuit, a pump, a long line set, or masonry drilling are quoted before work starts. Permit fees charged by a city are discussed separately when they apply. Ask us to put the boundary in writing.

Is a mini split the wrong choice for some Austin houses?

Yes. If you have working ducts and only need a new central air handler or condenser, adding wall heads can be extra hardware you do not need. A large open plan may not feel even with one or two cassettes. A panel with no spare slots can turn a simple swap into a service upgrade you did not budget. Older additions and converted garages are often a good fit. Whole house comfort through existing ducts is often a better fit. We say so when that is the case, even though it is not our install.

How do I start with ATX Mini Split King?

Call (512) 297-7493. Describe the symptoms, the rooms that are hot, and send a photo of the outdoor unit, the disconnect, and the indoor head. We are an independent HVAC and electrical contractor in Austin and Central Texas. Work is done to code by a TDLR licensed contractor. There is no relationship with the brand on your wall. We will tell you if repair is enough, if a flat replacement applies, or if non standard electrical or line work needs its own quote before anyone comes out.

Keep reading

Every replacement guide we have written is listed on the replacement guide hub. Next door to this page: replacing a failing pioneer unit in austin, replacing a failing della unit in austin. Pricing, service area and the quote form all live on the ATX Mini Split King home page, and the Austin mini split cost guide covers what the rest of the market charges.