Frequently Asked Questions about Mini Split Systems

On this page, we’ll cover all your Mini Split FAQ.

General Information

  • A mini-split system, also known as a ductless mini-split or ductless heat pump, is a type of heating and cooling system that consists of an outdoor compressor/condenser unit and one or more indoor air-handling units. These systems are designed to provide targeted climate control in specific areas or zones of a home or building without the need for ductwork.
    • Mini-split systems work by transferring heat between the indoor and outdoor units using refrigerant. In cooling mode, the indoor unit absorbs heat from the indoor air and releases it outside. In heating mode, the process is reversed, with the system extracting heat from the outdoor air and bringing it inside.
  • The main components of a mini-split system include the outdoor compressor/condenser unit, indoor air-handling units, refrigerant lines, a power cable, a condensate drain line, and a remote control or thermostat.
  • The primary difference between a mini-split system and a central HVAC system is that mini-splits do not require ductwork. Central HVAC systems use ducts to distribute air throughout a building, while mini-splits deliver air directly to specific zones or rooms through indoor units. This makes mini-splits more energy-efficient and easier to install, especially in buildings without existing ductwork.

Benefits and Features

  • Mini-split systems offer several benefits, including energy efficiency, zoned heating and cooling, easy installation, quiet operation, and improved indoor air quality.
  • Yes, many mini-split systems are equipped with heat pump technology, allowing them to provide both heating and cooling. These systems can efficiently extract heat from the outside air for heating, even in cold weather conditions.

The SEER (Seasonal Energy Efficiency Ratio) rating measures the cooling efficiency of an air conditioner or heat pump over a typical cooling season. A higher SEER rating indicates greater energy efficiency, leading to lower energy consumption and utility bills.

  • Mini-split systems are known for their high energy efficiency. They typically have higher SEER ratings than traditional central HVAC systems, leading to significant energy savings over time.
  • Mini-split systems often include various operating modes, such as cooling mode, heating mode, dehumidification mode, fan mode, and auto mode. These modes provide flexibility and control over the system’s operation.

Installation and Operation

  • Choosing the right size mini-split system involves considering factors such as the size of the space, insulation levels, local climate, and heat gain/loss calculations. A professional load calculation can help determine the appropriate system size.

The mini-split system installation process typically involves mounting indoor units for efficient airflow, installing the outdoor unit in a suitable location, running refrigerant lines with care, ensuring proper electrical wiring, setting up a condensate drain line, conducting a nitrogen test to check for leaks, applying a vacuum to remove air and moisture, charging the system accurately, testing components, and providing user instructions for maintenance and operation.

  • No, mini-split systems do not require ductwork. This makes them an ideal solution for homes without existing ducts or for adding climate control to specific areas without the need for extensive renovations.

Maintenance and Troubleshooting

  • Regular maintenance for a mini-split system includes cleaning or replacing filters, checking refrigerant levels, inspecting the outdoor unit for debris, and scheduling professional maintenance as needed.
  • Filters in a mini-split system should be cleaned or replaced every 1-3 months, depending on usage and indoor air quality. Clean filters ensure proper airflow and system performance.
  • Common issues with mini-split systems include refrigerant leaks, sensor problems, clogged filters, and drainage issues. These issues can often be resolved through regular maintenance or by contacting a professional for repairs.
  • If your mini-split system is not working properly, you can try troubleshooting steps such as checking the power supply, cleaning or replacing filters, and inspecting the outdoor unit for obstructions. If issues persist, contact a professional for further diagnosis and repair.

Cost and Savings

The cost of a mini-split system can vary depending on factors such as the size and number of indoor units, the SEER rating, and installation complexity. On average, a single-zone system can cost between $3,000 and $5,000, including installation.

  • Mini-split systems can save you money on energy bills in several ways:
    • Energy-efficient operation: Mini-split systems typically have high SEER ratings, meaning they consume less energy to heat or cool your home compared to traditional HVAC systems.
    • Zoned heating and cooling: Mini-splits allow you to heat or cool specific areas of your home as needed, avoiding energy waste in unoccupied rooms.
    • Ductless design: Without ducts, mini-split systems eliminate energy losses associated with ductwork, which can account for up to 30% of energy consumption in central HVAC systems.
    • Programmable features: Many mini-split systems offer programmable thermostats or smart controls, allowing you to schedule heating and cooling cycles to match your lifestyle and save energy when you’re away.

Warranties and Support

  • Warranties for mini-split systems can vary depending on the manufacturer and model. Common warranty components include:
    • Limited parts warranty: Covers defects in materials or workmanship for a specified period, typically ranging from 5 to 12 years.
    • Compressor warranty: Provides additional coverage for the compressor, which is often a critical component of the system.
    • Labor warranty: Some manufacturers or installers may offer labor warranties to cover the cost of labor for repairs or replacements.
  • It’s essential to review the warranty terms carefully and understand what is covered, any exclusions or limitations, and any requirements for warranty registration or maintenance.
  • Warranty coverage can vary depending on the manufacturer and specific terms of the warranty. Common items covered by warranties include defective parts or workmanship, compressor failure, and sometimes limited labor costs for repairs. Exclusions may include damage due to acts of nature, or unauthorized modifications. It’s crucial to review the warranty documentation carefully and contact the manufacturer or installer with any questions about coverage or exclusions.

Warranty Information for brands we install

Daikin is known for its robust warranties on their products:

  • Comprehensive Warranty: Most Daikin mini-split systems include a 12-year limited parts warranty.
  • Labor Warranty: Some Daikin dealers may offer an extended labor warranty, though this varies by dealer and is not typically part of the standard purchase.
  • Compressor Warranty: The compressor, a critical component, typically has a 12-year coverage under the limited parts warranty.

Senville offers competitive warranties to ensure customer satisfaction:

  • Comprehensive Warranty: Senville mini-split systems typically come with a 5-year limited parts warranty.
  • Compressor Warranty: The compressor is generally covered for 7 years, which is a standard offering in the industry.
  • Labor Warranty: Labor warranties are not standard with Senville products but may be available through individual dealers or installers.

Cooper & Hunter also offers substantial warranties on their mini-split systems:

  • Comprehensive Warranty: Cooper & Hunter mini-split systems typically include a 5-year limited parts warranty.
  • Compressor Warranty: The compressor warranty extends for 7 years, providing assurance for major components.
  • Labor Warranty: Like with other brands, labor warranties are generally not included but may be available through certain dealers or installers.
Astello Ductless Mini-Splits & Heat Pumps Serves Upstate New York!

For reliable service and ongoing support, don’t hesitate to reach out to us at (518) 328-1343.

We are based in Troy, but we provide service to the following areas throughout Upstate New York:
  • Albany

  • Altamont

  • Amsterdam
  • Averill Park
  • Ballston Lake
  • Ballston Spa
  • Berne
  • Bethlehem
  • Castleton
  • Chatham
  • Clarksville
  • Clifton Park
  • Cohoes
  • Colonie
  • Cropseyville
  • Coxsackie
  • Delanson
  • Delmar
  • Duanesburg
  • East Greenbush

  • East Schodack
  • Feura Bush
  • Gansevoort
  • Glenville
  • Glenmont
  • Glens Falls
  • Grafton
  • Greenfield
  • Guilderland
  • Johnsonville
  • Kinderhook
  • Knox
  • Latham
  • Loudonville
  • Malden Bridge
  • Nassau
  • New Lebanon
  • Niskayuna
  • Niverville
  • North Chatham
  • Poestenskill
  • Ravena
  • Rensselaer
  • Rotterdam
  • Saratoga

  • Schenectady

  • Schodack Landing
  • Scotia
  • Selkirk
  • Slingerlands
  • Stuyvesant Falls
  • Troy

  • Valatie
  • Voorheesville
  • Watervliet
  • West Sand Lake
  • Westerly
  • Wynantskill