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Mini-Split AC General

Which voltage model should I choose? 115V or 230V?

That will depend on the slot you have open. The 230V systems require a double pole breaker, therefore, it will require two slots in your panel. The 120 V system will require a single slot. Please note that the unit has to be wired to the breaker or c

Do you have another size line set? Can the copper line sets be cut or shortened?

The line set we provide is 16ft long.  There is a 25ft and 50ft long line set available for sale. Please check this link: https://tosotdirect.com/products/mini-split-ac-cooper-line-set-7-5m.  You can shorten the line set but only with professional ha

Is the mini-split AC pre-charged with freon?

Yes, the mini-split AC unit comes pre-charged with refrigerant, sufficient for line sets up to 16 feet in length. Additional refrigerant may be required if your installation exceeds this distance.

Are the coils coated with an anti-corrosion coat?

No, there is no anti-corrosion coat. However, the coils of the evaporator and condenser are made of copper, specifically phosphorus deoxidized copper, which enhances their corrosion resistance.

Why is there condensation at the indoor unit's air outlet of a split air conditioner?

The condensation at the air outlet of the indoor unit in a split air conditioner occurs due to the following reasons:. To minimize condensation at the air outlet of the indoor unit, consider the following measures:

Filter maintenance issues

The filter is a reusable filter. Instructions for cleaning the filter can be found in the user manual. If you prrefer to purchase a brand new filter, please email us via [email protected] for further assistance.

Can the split ac connect to a regular 120V outlet ?

No, our Split ACs [no matter 120V or 230V] can't plug the unit directly into an outlet.

What is the recommended operating range?

The recommended operating temperature range is -13°F -115°F. Performance may be impacted if you are operating the unit outside of this range.

Do you offer professional installation service?

Now offering installation services in Texas and Washington State. To request service and pricing, please fill out the HVAC Installation Service Form. Any local HVAC technician should be willing and able to help you with installation or issues. For

Can I use the GFCI breakers?

These breakers aren't designed to handle the high harmonic currents generated by inverters, which may lead to frequent tripping. A regular breaker paired with an AC disconnect box is usually adequate for maintaining safety.

What type of refrigerant is used in your split AC units?

We are transitioning all our R410A models to R32 refrigerant for both single-zone and multi-zone systems. This shift aligns with updated environmental regulations and compliance standards. Starting January 1, 2025, the U.S. Environmental Protection A

What should I check before buying ERV system?

Confirm that your installation site allows for a hole to be drilled through a wall to route the fresh air pipe outdoors. The pipe is 35 inches (90 cm) long and extension pipes are not available. Ensure your wall’s thickness and layout allow the pipe

Can the ERV system be mounted on any wall?

We recommend installing the ERV on the indoor side of an exterior wall, as the fresh air pipe needs to pass through to the outside. The included pipe is 35 inches (90 cm) long, which may not be sufficient for interior walls or walls with extra thickn

Does the ERV system need to be installed right next to the indoor unit?

Not necessarily. However, it must be connected to the indoor unit using a cable no longer than 3.9 ft (1.2 m). Please ensure the ERV is installed within this distance.

Can the ERV system work with my existing split AC?

No. This ERV system is specifically designed to be used with TOSOT Aoraki mini-split systems and is not compatible with other brands or models.

Can the ERV system work independently?

The ERV system must first be wired to a compatible indoor unit. Once properly connected, it can operate independently to facilitate indoor-outdoor air exchange even when the air conditioner is turned off.

Is it possible to use a MERV 13 rated filter on the mini split units?

We do not recommend using the MERV 13-rated filter. The higher the grade of the filter, the denser the filter, while affecting the airflow, it is more likely to cause clogging. If the filter grade is too high, or dirty clogging is not cleaned in time

How to remove the indoor unit from the mounting plate?

In order to release the indoor unit from the mounting plate, you just need to slightly lift the bottom of the indoor unit and pull it outward.

How to Operate the ERV in Aoraki Systems

Indicator Light The ERV module features a white indicator light. If a fault occurs, the light will flash as an alert. Airflow Levels There are 7 selectable airflow levels. The highest level provides approximately 30 m³/h of fresh air (with similar ex