Skip to content

Heating & Air

Ductless Mini-Splits Services in the Puget Sound

Is your ductless system struggling to keep your home comfortable? We expertly diagnose and resolve all your mini-split repair and service needs.

ServingSeattleBellevueKirklandRedmondBothellMercer IslandMedina& the greater Puget Sound

4.9

Rated 4.9 from 2,300+ Google reviews

  • Licensed & Insured
  • Upfront, flat-rate pricing
  • Same-day & emergency service
  • 100% satisfaction guarantee
  • Family-owned since 2012
BBB A+ Rated Google Guaranteed PSE Trade Ally

Is Your Ductless System Failing to Keep Up?

Is your ductless mini-split blowing lukewarm air, leaking water down your drywall, or driving up your power bill while failing to reach the temperature you set? These are clear signs of a mechanical failure, a refrigerant leak, or a clogged drain that won't resolve with a simple filter change. At Eco Electric, Plumbing, Heating and Air, our technicians are ready to diagnose and resolve your ductless issues anywhere across the Puget Sound.

Ductless Repair & Service

When a mini-split stops delivering, the culprit is usually a refrigerant leak, a failing inverter compressor, or a fried control board. We get calls constantly about wall cassettes blowing warm air in cooling mode or turning into an ice block during the winter. Nine times out of ten, that points to an active leak at a flare connection or a faulty thermistor that is confusing the system's brain.

Catching these issues early is the difference between a cheap fix today and a burnt-out compressor next month. When refrigerant leaks out, the system also loses vital lubricating oil, which causes the compressor to grind itself to death. If a unit is too far gone or the repair cost exceeds half the value of a new system, we might suggest pivoting to Ductless Installation & Replacement. However, our primary goal is always to salvage your current equipment whenever it makes financial sense.

Common signs you need immediate repair:

  • Water dripping from the indoor wall cassette or bubbling behind the drywall
  • Grinding, buzzing, or clicking noises from the outdoor condenser
  • The system runs constantly but the room stays uncomfortably warm or cold
  • Error codes flashing via LED lights on the indoor unit's display
  • A sudden, unexplained spike in your monthly electrical usage

Whether your system needs a quick fix or a major component swap, our Ductless Repair & Service team handles every call across Puget Sound.

Ductless Installation & Replacement

Swapping out an aging mini-split or adding a new zone requires precise sizing and strategic placement to actually deliver the efficiency you are paying for. In older Puget Sound homes where traditional ductwork is impossible, ductless systems are the ultimate solution for targeted comfort. But a poorly placed wall cassette or an undersized outdoor unit will leave you with hot spots, short-cycling, and high utility bills.

We assess your home's layout, insulation levels, and electrical capacity before recommending a single-zone or multi-zone setup. We run proper load calculations to ensure the equipment matches the exact heat loss and heat gain of the space. Sometimes, upgrading to a high-capacity multi-zone system requires Panel Upgrades to handle the electrical load safely and up to code.

The Installation Process

We start by mounting the indoor air handlers securely, ensuring they have proper clearance for airflow and maintenance. Our technicians carefully route the refrigerant line sets, communication wires, and condensate drains through a small exterior conduit. We ensure the line sets are perfectly sealed, pressure-tested with nitrogen, and vacuumed down to remove all moisture before releasing the refrigerant. Once the new system is dialed in, setting up a regular Ductless Maintenance & Tune-Up schedule is the best way to protect your investment.

Explore our complete Ductless Installation & Replacement coverage to see how we approach planned upgrades.

Ductless Maintenance & Tune-Up

Neglecting your mini-split is the fastest way to kill its efficiency and invite biological growth into your living space. Because these units constantly cycle room air over a cold, damp indoor coil, they are absolute magnets for dust, pet dander, and airborne particulates. When that debris builds up, your blower wheel struggles to move air, forcing the inverter compressor to ramp up and work overtime.

A neglected system will eventually freeze up, trip a breaker, or start leaking water inside your home when the drain pan overflows. Regular maintenance catches these issues while they are still minor adjustments rather than emergency breakdowns. If we find deep-seated grime or mold during a standard tune-up, we might recommend a full Ductless Cleaning & Commercial Services visit to properly reset the unit.

What we check during a maintenance visit:

  • Refrigerant pressures, temperatures, and overall system charge
  • Condensate drain line flow and the condition of the drain pan
  • Electrical connections, contactors, voltage, and compressor amperage
  • Blower wheel balance and indoor evaporator coil cleanliness
  • Communication signals between the indoor head and outdoor condenser

Lock in proactive care and protect your warranty with our Ductless Maintenance & Tune-Up program.

Ductless Inspection & Testing

An independent, deep-dive evaluation is critical when you are buying a home, selling a property, or trying to track down a persistent performance issue that other companies missed. You would be surprised how many installers hang a mini-split, turn it on, and walk away without verifying the actual airflow or temperature split. If your system is running but your energy bills are unusually high, surface-level troubleshooting simply won't cut it.

We hook up specialized digital gauges to test refrigerant pressures and measure the exact electrical draw of the compressor under load. We also verify that the communication wire between the indoor and outdoor units is transmitting flawlessly without voltage drops. If an inspection reveals a failing component or a poorly made flare joint, we seamlessly transition into Ductless Repair & Service to get it sorted.

Key areas we evaluate during an inspection:

  • Visual assessment of all indoor heads, line set insulation, and the outdoor condenser
  • Performance testing to measure static pressure and temperature differentials
  • Electrical testing of the inverter drive, control boards, and safety limits
  • Verification of multi-zone independent operation and refrigerant metering
  • Code compliance checks for electrical disconnects and equipment clearances

Compare your equipment against our rigorous Ductless Inspection & Testing standards before minor issues become major failures.

Ductless Cleaning & Commercial Services

A mini-split caked in grime doesn't just run poorly—it actively circulates musty, contaminated air throughout your property. In our damp Puget Sound climate, the dark, wet interior of a ductless head is the perfect breeding ground for mildew, mold, and bacteria. Homeowners and business operators often complain about a "dirty sock smell" when the unit kicks on, which is a direct result of this biological buildup.

Standard filter cleaning won't solve this; you have to physically strip the unit down to access the impacted components. For our commercial clients, maintaining these systems is about protecting inventory, meeting health standards, and keeping employees comfortable without disrupting daily operations. If a deep clean reveals a failing blower motor or a cracked drain pan, a Ductless Repair & Service visit is the next step to restore full functionality.

Deep Cleaning Protocol

We use specialized, HVAC-safe biocides and pressurized water systems to flush out the biological growth hiding deep inside the unit. We place a custom catch-bag around the indoor wall cassette or ceiling cassette to protect your walls and flooring while we wash the evaporator coil and blower wheel. Finally, we clear and flush the condensate lines to prevent the clogs and overflows that commonly ruin drywall below the unit.

Reset your system's performance and air quality with a thorough Ductless Cleaning & Commercial Services visit.

How We Work Across Puget Sound

When you call Eco Electric, Plumbing, Heating and Air, you are getting a multi-trade team that understands exactly how your HVAC, electrical, and plumbing systems interact. We arrive in fully stocked trucks, ready to diagnose the root cause of your ductless failure rather than just treating the symptoms. Our technicians bring over 100 years of combined experience to the table, ensuring the job is done right the first time.

We believe in blunt honesty and upfront pricing. Once we diagnose the issue, we lay out your options in plain English, detailing the exact cost of a repair versus a replacement. You won't find hidden fees, vague estimates, or high-pressure sales tactics here—just practical, eco-minded solutions.

From our hubs in Seattle and Everett, we dispatch licensed, bonded, and insured professionals who respect your home. We wear shoe covers, use drop cloths, and clean up our work area before we leave. We are not satisfied until your system is running optimally and you are completely comfortable in your space.

Related Home Systems

Your ductless system relies heavily on your home's electrical infrastructure to run safely and efficiently. If you are adding multiple zones or upgrading an older property, you may need to look into Panel Upgrades to handle the increased amp draw without tripping breakers.

For homeowners looking to improve the air they breathe, pairing a clean mini-split with dedicated Indoor Air Quality solutions can drastically reduce dust and allergens. If you decide to transition to a whole-home ducted setup later, our Heat Pumps team can design a central system that fits your property perfectly.

Stop Living With Inconsistent Comfort

Ignoring a struggling mini-split will only lead to higher utility bills, frozen coils, and eventually, a dead compressor. You need a team that knows exactly how to track down refrigerant leaks, clear biological growth, and restore your system's performance. Don't wait for a total breakdown in the middle of a temperature spike.

Contact us today to get an expert technician out to your home.

Ductless, Simplified

What is a ductless mini-split — and how does it work?

A ductless mini-split is a heat pump — just without the ducts. One outdoor unit connects to wall-mounted indoor heads through slim refrigerant lines, and each head heats and cools its own room. No ductwork, no major construction.

How a ductless mini-split works A compact outdoor heat pump unit connects through a small wall opening to slim refrigerant lines that feed wall-mounted indoor heads in separate rooms. Each head heats or cools its own room independently — one room shown warming in winter, another cooling in summer — with no ductwork anywhere in the home. Bedroom Living room No ductwork anywhere One outdoor unit Slim lines — not ducts Wall head · zone 1 Heating this room Wall head · zone 2 Cooling this room 1 2 3
  1. 1

    One outdoor unit

    A compact outdoor heat pump moves heat in or out of your home — the same technology as a central heat pump, just without ducts.

  2. 2

    Small lines, not ducts

    Slim refrigerant lines run through a small wall opening to each room. No crawlspace ductwork, no attic runs, no major construction.

  3. 3

    A head in each room you choose

    Each wall-mounted indoor head heats or cools its own room with its own thermostat — comfort exactly where you want it.

Slim refrigerant lines Zone set to heat Zone set to cool

Why homeowners go ductless

No ductwork required

Ideal for older Puget Sound homes, additions, garages, and ADUs where adding ducts would be expensive or disruptive. Installation needs only a small wall penetration.

Room-by-room zone control

Every head is its own zone. Heat the bedroom without conditioning the whole house — and stop fighting over one thermostat.

Heating AND cooling in one

Like every heat pump, a mini-split reverses with the seasons: efficient warmth in winter, real air conditioning in summer.

No duct losses

Leaky or uninsulated ducts waste a meaningful share of the energy central systems produce. Ductless delivers comfort straight into the room — nothing lost in a crawlspace.

Quiet in the room

Quality mini-split heads make little more than a soft fan sound, and the outdoor unit is far quieter than older AC condensers.

Rebate-friendly in WA

Replacing electric baseboard or wall heaters with ductless is one of the most commonly incentivized upgrades here — PSE has offered ductless rebates, and we confirm current eligibility for you.

Is ductless right for your home?

If any of these sound like your house, ductless is worth a serious look:

Your home has no existing ducts

Homes built with baseboard, wall heaters, or radiators can get modern heating and cooling without tearing walls open for ductwork.

You added a room, ADU, or converted a garage

A single-zone mini-split conditions the new space independently — no need to stretch (or oversize) your main system.

One room is always too hot or too cold

A dedicated head fixes the upstairs bedroom that bakes in summer or the bonus room that never warms up — without touching the rest of the house.

You're replacing baseboard or wall heaters

Common in WA homes — and one of the biggest efficiency jumps you can make, since resistance heat makes heat instead of moving it.

Want to see the refrigerant loop flip between seasons? Try the interactive how-heat-pumps-work diagram in our Learning Center.

Wondering how many zones your home needs? We size with a real load calculation — get a free, no-pressure ductless estimate.

Call (206) 970-1031

Ready for ductless mini-splits? Let's talk.

Talk to our team — you'll get a clear, upfront price before any work begins, and a job that's done right the first time.

No fine print

The Eco Triple Guarantee

Every electrical, plumbing, and HVAC job is backed by three promises in writing — so you can say yes with total confidence.

Call Now (206) 970-1031 Text Book Online