MRCOOL Frequently Asked Questions (FAQ)

by Pete Lader July 29, 2022

A comprehensive guide and review to the most frequently asked questions from customers about MRCOOL products.

Is the DIY Mini Split Series truly DIY? 

The DIY System will have all the necessary parts for installation by a handy person.
The systems do not come with a power cord and requires 220V. You will need to directly connect an electrical whip to a disconnect box or circuit breaker and then to the breaker box. If you aren't comfortable doing this yourself, you'll need to hire an electrician (here's our preferred Installation Partner, Angi).

What are the biggest advantages of the 4th Generation Series?

Higher SEER for the Single-Zone 18K, 24K and 36K units
Added 18K and 48K Condenser
Improved Warranty
Improved durability of the communication wire

Read more in our 4th Generation Breakdown

What can I do about the excess coil/line set?

It is recommended to leave the remaining/excess line set coiled horizontally near the condenser and wrapped with protective tape. This will not impact performance whatsoever.

How much square feet can the DIY Air Handlers Cover?

9K BTU - 375
12K BTU - 500
18K BTU - 750
24K BTU - 1,000
36K BTU - 1,500


Can I use only one Air Handler with a Multi-Zone Condenser?

Nope! At least two Air Handlers need to be connected to a Multi-Zone Condenser and the total BTUs of the Air Handlers need to be at least 65% of the total BTUs of the Condenser. 

What does the SEER Rating mean?

An air conditioner’s SEER rating is a number value determining its cost-efficiency over an average cooling season. The higher the SEER rating, the less energy it needs to output its cooling capabilities.

Our team has published an amazing article that goes more in-depth that you can read here in our article: What is a SEER Rating?

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