Your Location Ashburn, VA

Get the Best From Your Ductless Mini Splits in Cooler Weather-- Or Anytime -- With These Tips

  • Heating

For high-efficiency heating in cool or frigid temperatures, with versatile installation options to match practically any home-improvement project, ductless mini splits are often the best heating solution for homeowners in most regions of the country. To get the best performance from your Mitsubishi ductless system installation through the heating months -- or anytime-- make sure you or your HVAC contractor use these tips.

Reduce the Heating Load

Ductless mini splits don't produce heat like a fuel-burning furnace. Instead, ductless systems extract existing heat contained in outside air and transfer and release the heat inside your home. For this reason, one of the best ways to get the best performance from your ductless system is to lower the heating load by sealing air leaks and boosting insulation in the home. Ask your contractor to perform a home energy evaluation before you install your ductless system, and make the appropriate home-efficiency upgrades.

Sizing Your New Mitsubishi Ductless System

Mitsubishi ductless mini splits can be sized to heat a small room or area to multiple rooms throughout a home. Correct sizing is an important ingredient for leveraging energy savings and system stability. Ductless systems with advanced technologies are designed to operate with long heating cycles at low speeds. This reduces noise and provides a measurably more comfortable home-comfort experience.

Your Mitsubishi contractor should calculate the heating load of the room or rooms where the air handlers (evaporator and blower) are to be installed. The results of the heating load dictate which size ductless system to install.

Installing for Best Performance

The compressor and condenser of ductless systems are housed in a compact cabinet located outside the home. If the region where your home is located traditionally experiences heavy snowfall, you'll need to take special installation measures to promote optimal performance of the outside components.

If the outside unit is installed on the ground, the top must be protected with an awning or other covering to prevent snow and ice from settling on the unit. Moreover, snow drift must be kept at a distance of four feet or more to promote free airflow.

You may consider mounting the cabinet to the home's exterior several feet off the ground. Whichever installation location and method you select, check the cabinet periodically for ice, snow and other seasonal debris such as leaves and grass clippings.

Space-Saving Air Handlers

Ductless mini splits provide heating at the air handlers directly to the living spaces. The air handlers are typically mounted high on walls. This promotes free airflow and saves space. The air handlers are also easily mounted to the ceiling or hung flush in a drop-ceiling panel.

Installing the Conduit

A thin conduit contains the refrigerant lines necessary to transport refrigerant between the indoor evaporator and outdoor compressor/condenser. The conduit is very flexible, and only needs a small hole in the home's outer wall and a small hole on the inner wall or ceiling space where the air handler is to be installed.

If you're installing an air handler to the interior of an outer wall of the home, it makes sense to locate the outside cabinet on the other side. However, noise is a consideration for installing the indoor air handlers and outdoor cabinet. If the conduit extends less than 15 feet, there will be some noise transmission to the living space. Extend the conduit further than 15 feet if noise is a concern.

Advanced Technologies

Work closely with your Mitsubishi contractor to learn which advanced features of ductless systems would best benefit you. Ductless mini splits with high-efficiency compressors are fully capable of providing ample heating down to single-digit and negative temperatures. You'll also want to consider multi-speed fans and indoor-air quality components if any occupants suffer respiratory issues.

Efficiency Factor

Compare efficiency ratings (HSPF and SEER) of competing ductless models by using the EnergyGuide label. This is an easy way to quickly discern which ductless system gives you the most heating power within your home-improvement budget.

Tidy System, Tidy Bills

One of the simplest ways to keep performance high and energy bills low is to perform light do-it-yourself maintenance for your ductless system. Clean the air filter every two months, or more often if you use the ductless system daily. Professional preventive maintenance is also a necessity for system longevity and efficient heating.

Make sure a licensed Mitsubishi Electric contractor performs annual service on your system, and you'll enjoy many years of heating efficiency at its best.

For more information about leveraging the best performance from ductless mini splits, more maintenance tips or other HVAC questions, contact a Mitsubishi Electric contractor near your home.


Find a Mitsubishi Electric Contractor
for sales, service and installation.