ERV Services, the Off Duty Way.
The ERV fleet is growing across the corridor’s tight new construction, and it is aging the way all equipment does: filters loading, cores fouling, flows drifting out of balance, controls failing quietly, and the balanced-ventilation promise degrading behind a hum that sounds like everything is fine. ERV service is the discipline that keeps the recovery real.
Indoor Air Quality · Burnet & Central Texas
The Balanced Machine, Kept Balanced
An ERV’s performance is a stack of maintainable conditions: filters on both airstreams clear enough to pass design flow, the enthalpy core’s passages open and its membrane surfaces clean, the two flows actually balanced against each other, condensate paths clear, and controls running the intended schedule, and every one of those degrades on its own quiet clock. The failure signature is subtlety itself, no breakdown, no noise, just a house edging back toward the staleness the machine was bought to cure, recovery efficiency sliding, and in the imbalance cases, the house itself pressurized or depressurized in ways that push moisture into walls or pull attic air through every gap. Service restores the stack, measurably.
The service visit runs the machine’s full physiology: filters replaced on both streams, the core extracted and serviced per its type, enthalpy membranes cleaned gently to their manufacturer’s method, since aggressive washing kills the moisture-transfer surfaces that make the ERV Texas-right, drains verified, both airstreams measured and rebalanced to design, the item casual service always skips and the machine’s entire premise depends on, controls exercised through their schedule and sensors verified, and terminations inspected, the outdoor screens’ insect-and-lint census cleared. Findings land in the file with the flow numbers, so the machine’s aging is data rather than mystery.
Repairs follow where service finds them, fan motors, damper actuators, control boards, core replacements on units whose membranes aged out, quoted plainly with the recovery arithmetic that says whether repair or replacement serves the house better.
Everything about this service gets tuned to where you live. The same failure looks different in a lakefront place at Horseshoe Bay, a nineties ranch house outside Bertram, and a five-year-old build in Leander, because humidity exposure, duct design, and equipment grade differ at each address. Ten years of ERV service calls across Burnet County and the corridor mean we usually know the local pattern before the panel comes off: what the builder-grade systems in the new subdivisions do at year five, what lake air does to outdoor coils, and what a Hill Country attic does to anything asked to work inside it in August.
Indoor Air Quality
The ERV Service Visit
What keeping a balanced ventilator honest actually involves, annually.
- Both filter streams changedIntake and exhaust media replaced on the real schedule, pollen country shortening the intervals honestly.
- Core serviced to its typeEnthalpy membranes cleaned by the manufacturer’s method, the gentle discipline that preserves moisture transfer.
- Flows measured and rebalancedBoth airstreams metered back to design match, the verification that separates service from filter delivery.
- Condensate path provenDrains and pans cleared and tested, the humid-climate item the northern manuals underweight.
- Controls and sensors verifiedSchedules, boost functions, and humidity logic exercised against actual behavior.
- Terminations clearedOutdoor hoods and screens censused and cleaned, where lint, insects, and cottonwood conspire.
Not sure this is your problem?
Call anyway. We name the likely cause on the phone for free, and if it turns out to be something small you can handle yourself, we say exactly that and save you the visit.
Why Off Duty
Repairs, and the Aging-Core Question
The ERV repair catalog concentrates where moving parts and Texas conditions meet: fan motors and their bearings, the workhorses of continuous duty, replaced with amp draws verified; damper actuators that stick in the defrost and recirculation logic; control boards and sensors whose failures scramble schedules quietly; and the condensate-adjacent corrosion that humid-climate duty writes into cabinets over years. The deeper question is the core itself, enthalpy membranes age, their transfer efficiency declining over the years even with gentle service, and the honest assessment reads yours against replacement-core availability and cost, the repair-versus-new-unit arithmetic shown plainly when the machine’s age puts it on the table. Units installed in the corridor’s first tight-construction wave are reaching exactly this conversation, and it deserves numbers rather than momentum.
Orphaned ERVs are their own steady clientele: units installed by builders, never serviced, their owners unaware the machine existed until the assessment found it, filters original, flows unmeasured since commissioning if ever, and the revival service, full physiology plus a baseline file, routinely restores recovery the house had lost without noticing. If your newer house has a ventilation unit humming somewhere you have never touched, this page is its overdue appointment, and the first visit’s findings usually explain several things about the house at once.
Here is how the visit goes. A call to (512) 925-3090 reaches a real tech, not a call center, at any hour. On site, the diagnosis runs on instruments until the cause is certain, and then everything gets laid out in plain English: what failed, what fixes it, and exactly what it costs, before work begins. When the ERV service work is done, it gets verified under load instead of switched on and waved at. If the pattern sounds simple, it is. It is also rare enough in this trade that people write reviews about it.
Money talk, handled the Burnet way: we say the price before the work, every time. The trip cost comes over the phone before we roll, the repair quote comes after diagnosis and before a single part goes in, and if the smart move is to not spend money at all, you will hear that too. Fair pricing shows up in every review we have because it is policy, not luck.
One honest note about timing. Problems in this category rarely improve on their own, and the price of waiting is usually a bigger bill: the weak part takes a healthy one with it, the small leak becomes a stain on a ceiling, the strange noise becomes a seized motor. Calling early is almost always the cheaper version of the same repair, and the phone consult costs nothing: describe what you are seeing and we will tell you honestly whether it can wait.
You will also know exactly who is in your house. This company runs on one standard because it mostly runs on one set of hands: Bryce, second-generation in the trade, with every credential on the about page and every kind of job photographed in the gallery. Small shop, short chain of accountability, no strangers in rotation.
This service runs wherever our trucks do: home base in Burnet, the Highland Lakes from Granite Shoals to Buchanan Dam, down the corridor to Round Rock and Austin, north to Killeen and Temple, and out to the sixteen-county edge at Waco, Boerne, and Fredericksburg. The whole map lives on the service areas page, with drive-time honesty built into every window we quote.
Diamond Contractor
Mitsubishi’s top ductless credential, earned with factory training.
Second Generation
Raised in the trade, ten years on the tools before the name went on a truck.
Warranty Authorized
JB and Mitsubishi warranty work: we file the claim, you skip the fight.
Open 24 Hours
A real person answers the phone at any hour, every day of the year.
The Standard
How This Work Gets Done Here
A job like this is a chain of small decisions nobody watches: which part, which setting, which clearance, which step gets skipped when the attic hits 130 degrees. Our answer to all of them is the same. Do it the way the book says, the way the second generation was taught, the way you would want it done if the address were your own. That means proven diagnosis before parts, correct materials over convenient ones, and procedure followed all the way through the parts of the job that never show.
It also means finishing properly. The system gets verified under working load, the readings get documented, the old components get shown on request, and you get an explanation in plain English rather than trade jargon. The price never moves between the quote and the invoice. If anything about the work ever needs a second look, the phone number on your receipt rings the person who did it. Simple system, kept promises, reviewed in public by the people it was kept to.
ERV Services Questions
Asked Before We Roll a Truck
Real questions from real Central Texas customers, answered the same way we answer them on the phone: straight.
How often does an ERV need service?
Filters quarterly-to-seasonally in pollen country, honestly assessed against your site’s load, and the full service, core, flows, drains, controls, annually, with the humid-climate condensate items deserving their pre-summer timing. Continuous-duty machines age on runtime rather than calendar sympathy, and the fleet pattern is stark: serviced ERVs deliver their rated recovery for years while unserviced ones drift toward expensive fans within a few, the degradation invisible behind normal-sounding operation. The rhythm folds into the standard maintenance program, reminders ours, and the machine’s whole value proposition, ventilation at a fraction of its raw cost, rides on the calendar being kept.
What does rebalancing mean and why does it matter?
The ERV’s premise is matched flows, stale air out equaling fresh air in, and drift breaks it two ways: efficiency, since the core recovers energy between the streams and mismatch starves the exchange, and building physics, since a house pushed positive drives moist indoor air into wall cavities while one pulled negative inhales attic, crawlspace, and every gap’s worth of unfiltered infiltration, both quietly destructive in a humid climate. Filters loading unevenly, fan wear, and damper drift all unbalance the machine over time, which is why real service measures both streams and adjusts them back to design match, documented. A balanced ventilator is the product; an unbalanced one is a slow problem generator.
My new house has an ERV I have never touched. What should I do?
Book its overdue first service and expect revelations: builder-installed units commonly run their commissioning filters years past capacity, cores unserviced, flows never verified since startup, schedules on defaults chosen by nobody, and the revival visit, full physiology, filters, core, flows, drains, controls, plus a baseline file, restores the recovery quietly lost and frequently explains standing house mysteries, the stuffy bedrooms, the condensation pattern, the mystery hum. From there the machine joins the normal rhythm and simply works, which is what the builder’s spec intended before the manual ended up in the junk drawer. Bring the manual if you can find it; we manage fine when you cannot.
Can you repair my ERV or does it need replacing?
Repair, in most of the fleet’s current age range: motors, actuators, boards, sensors, and dampers are all serviceable economics on machines whose cabinets and cores remain sound, quoted plainly per the house rule. The replacement conversation belongs to aging cores whose membranes have genuinely declined, units whose parts channels died with their importers, and cabinets that humid-climate corrosion claimed, and it arrives with arithmetic, repair cost against new-unit cost against the recovery efficiency at stake, plus the honest note that ERV technology’s current generation meaningfully outperforms the first wave. The assessment reads your unit’s position and shows the numbers; the machine’s hum alone tells neither of us anything.
Do you service ERVs you did not install?
Constantly, they are most of the service fleet: builder installs, prior-owner mysteries, and units from outfits that installed and vanished, each getting the baseline treatment, model identified, filters sourced, core type read for its correct service method, flows measured against the nameplate design, and the file started, after which the machine is simply ours to keep honest like everything else on the maintenance rhythm. Brand coverage spans the mainstream platforms, filter and parts sourcing included, and the balanced-ventilation discipline, gentle cores, measured flows, humid-climate drains, is universal. The machine’s origin matters less than its next five years, which is the part we are being hired for.
Related work: ERV Installation · HRV Services · Ventilation System Repair · see real jobs in the gallery
Recovery, Restored and Measured
Cores kept gentle, flows rebalanced to design, and the tight-house breathing machine kept honest. Prefer to write it out? Send the form and we call you back.
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