No ducts, no problem. Cascadia Comfort installs and services ductless mini-split systems that heat and cool your home efficiently, quietly, and on your schedule. Free in-home estimates with no obligation.
Most older homes in the greater Seattle area were built without central air conditioning. Adding a traditional ducted system to those homes means designing, installing, and paying for an entirely new duct network, which is expensive, invasive, and not always practical depending on your home’s layout.
Ductless mini-split systems solve that problem. They deliver efficient heating and cooling directly to the spaces you want to condition, without any ductwork at all. Installation requires nothing more than a small hole in the wall to run refrigerant lines between the indoor and outdoor units.
Mini-splits aren’t just a workaround for homes without ducts, though. They’re a genuinely superior solution in many situations:
If your home doesn’t have ducts, has a room that never gets comfortable, or you’re finishing a space that isn’t connected to your main system, a mini-split is very likely the right answer.
01
No Ductwork Required
This is the single biggest driver. Retrofitting ductwork into an existing home is costly, disruptive, and sometimes structurally complicated. Mini-splits eliminate that entirely. The indoor unit mounts on a wall or ceiling, refrigerant lines run through a small exterior penetration, and the outdoor compressor sits outside. The installation footprint is minimal, and most jobs are completed in a single day with no major construction.
02
Zone-by-Zone Temperature Control
With a traditional central system, you’re conditioning your entire home to one temperature. Mini-splits let you set different temperatures in different rooms independently. A home office can stay cooler while bedrooms are warmer, and unused rooms don’t get conditioned at all. For homeowners who have always had one family member too warm and another too cold, this alone is a game changer.
03
Year-Round Efficiency for Heating and Cooling
Modern cold-climate mini-splits are heat pumps, meaning they move heat rather than generate it. That makes them significantly more efficient than electric resistance heating, and they perform well even when Seattle temperatures dip into the 30s. Many homeowners use mini-splits as their primary heating and cooling source, reducing reliance on older, less efficient systems and lowering monthly energy costs at the same time.
2-YEAR SATISFACTION GUARANTEE
10-YEAR PARTS & LABOR WARRANTY
Whether you’re finishing a basement, converting a garage, building an ADU, or simply have a room your central system has never kept comfortable, a ductless mini-split installation from Cascadia Comfort starts with a free in-home estimate.
We assess the space, discuss your goals, and recommend the right system size and configuration. Mini-splits are available in single-zone setups (one outdoor unit, one indoor unit) and multi-zone configurations (one outdoor unit connected to multiple indoor units throughout the home). We’ll help you determine which setup makes sense for your situation.
What installation typically includes:
Most single-zone mini-split installations are completed in one day. Multi-zone systems may take longer depending on the number of indoor units and complexity of the layout. Cascadia Comfort handles all permitting so your installation is code-compliant and warranty-protected.
We serve homeowners throughout the greater Seattle area including Bothell, Everett, Lynnwood, Bellevue, and surrounding communities.
Yes. Most modern mini-splits are heat pumps that provide both heating and cooling. Cold-climate models maintain strong efficiency even when outdoor temperatures drop into the 20s and 30s, making them a practical year-round solution in the Pacific Northwest.
Costs vary based on the number of zones, system size, and installation complexity. Our in-home estimates are free and come with no obligation so you’ll have a real number before making any decisions.
Most single-zone installations are completed in one day. Multi-zone systems may take longer. We’ll give you a clear timeline during your estimate.
Many high-efficiency mini-split systems qualify for rebates through Puget Sound Energy or Snohomish PUD, as well as federal tax credits under current energy efficiency incentive programs. We’ll walk you through what’s available during your consultation.
Indoor units typically operate between 19 and 30 decibels, roughly equivalent to a quiet library. Most homeowners barely notice them running.
Ductless mini-splits are reliable systems with fewer moving parts than traditional HVAC equipment, but they still require periodic maintenance and occasional repairs to perform at their best.
Routine Maintenance The most important thing you can do for your mini-split is keep the filters clean. Indoor unit filters should be rinsed every four to six weeks during heavy use seasons. Beyond that, an annual professional tune-up keeps the system running efficiently and catches small issues before they become bigger ones. A standard maintenance visit from Cascadia Comfort includes cleaning the indoor coil and blower, inspecting refrigerant levels, checking electrical connections, clearing the condensate drain, and testing overall system performance.
Common Mini-Split Repairs We Handle
Refrigerant Leaks. Mini-splits are a closed refrigerant system. If the charge drops, cooling and heating performance suffers noticeably. We locate the source of the leak, repair it, and recharge the system to manufacturer specifications.
Drainage Issues. Mini-splits remove humidity from the air, and that moisture exits through a condensate drain. When the drain clogs, water can back up into the unit and cause damage or trigger a shutoff. Clearing and flushing the drain line resolves this quickly.
Error Codes and Communication Failures. Most modern mini-splits display error codes when something isn’t right. These can indicate anything from a sensor fault to a refrigerant issue to a communication problem between the indoor and outdoor units. Our technicians diagnose error codes accurately and resolve the underlying cause rather than just clearing the fault.
Ice Buildup on the Indoor Unit. Ice forming on the indoor air handler usually points to a dirty filter, low refrigerant, or an airflow restriction. Left unaddressed, ice buildup puts strain on the compressor and reduces system life. We identify the cause and correct it.
Remote or Control Board Issues. Mini-splits rely on electronic control boards and remote communication. When these fail, the system may not respond to commands or may behave erratically. We diagnose and replace faulty control components to restore normal operation.
If your mini-split isn’t performing the way it should, don’t ignore it. Small issues caught early are almost always simpler and less expensive to fix than problems that develop over a full season of neglect.
