Product Announcements: What’s New in the MRCOOL Lineup

The Best Bang for Your Buck: MRCOOL’s New High-Efficiency Electric Water Heaters

The Best Bang for Your Buck: MRCOOL’s New High-...

James Lee

Experience next-level efficiency and performance with the new MRCOOL® Electric Water Heater line — featuring self-cleaning technology, corrosion-resistant design, and a patented rare-earth anode rod. Available in 30-, 40-, and...

The Best Bang for Your Buck: MRCOOL’s New High-...

James Lee

Experience next-level efficiency and performance with the new MRCOOL® Electric Water Heater line — featuring self-cleaning technology, corrosion-resistant design, and a patented rare-earth anode rod. Available in 30-, 40-, and...

Comparison of MRCOOL mini-split systems showing DIY vs Non-DIY models including E Star, EZPRO, Advantage, and Olympus with icons for smart control, energy efficiency, and pre-charged line sets.

MRCOOL Mini-Split Comparison: 5th Gen E Star DI...

James Lee

Thinking about a MRCOOL mini split but not sure which one to buy? This in-depth guide breaks down every difference between DIY and Non-DIY systems — from the E Star...

MRCOOL Mini-Split Comparison: 5th Gen E Star DI...

James Lee

Thinking about a MRCOOL mini split but not sure which one to buy? This in-depth guide breaks down every difference between DIY and Non-DIY systems — from the E Star...

ow MRCOOL Shook Up the HVAC Industry, highlighting DIY HVAC systems, pre-charged mini splits, multi-zone, and central ducted units that save homeowners and contractors thousands

How MRCOOL Shook Up the HVAC Industry: DIY Syst...

Chill Masterson

MRCOOL has disrupted the HVAC industry with DIY-friendly, pre-charged systems that cut out the middleman. Homeowners, contractors, and DIYers can now install mini splits, multi-zone systems, central ducted, and package...

How MRCOOL Shook Up the HVAC Industry: DIY Syst...

Chill Masterson

MRCOOL has disrupted the HVAC industry with DIY-friendly, pre-charged systems that cut out the middleman. Homeowners, contractors, and DIYers can now install mini splits, multi-zone systems, central ducted, and package...

MRCOOL DIY 5th Gen vs 4th Gen multi-zone mini-split comparison showing 18k–55k BTU, up to 6 zones, SEER2 efficiency, pre-charged refrigerant.

MRCOOL DIY 5th Gen vs 4th Gen Multi-Zone: More ...

James Lee

Comparing MRCOOL DIY 4th Gen and 5th Gen multi-zone? The 5th Gen raises zone limits (up to six) and adds a 55k condenser, aligns with SEER2, and ships pre-charged so...

MRCOOL DIY 5th Gen vs 4th Gen Multi-Zone: More ...

James Lee

Comparing MRCOOL DIY 4th Gen and 5th Gen multi-zone? The 5th Gen raises zone limits (up to six) and adds a 55k condenser, aligns with SEER2, and ships pre-charged so...

R-454B refrigerant switchover 2025 guide showing mini split leak sensors and warning about spray foam causing false leak alarms

Understanding R-454B Refrigerant, Leak Sensors,...

Chill Masterson

The HVAC industry officially transitioned from R-410A to R-454B refrigerant in 2025. With this change, new MRCOOL mini split systems include highly sensitive leak detection sensors. While safer and more...

Understanding R-454B Refrigerant, Leak Sensors,...

Chill Masterson

The HVAC industry officially transitioned from R-410A to R-454B refrigerant in 2025. With this change, new MRCOOL mini split systems include highly sensitive leak detection sensors. While safer and more...

Infographic explaining MRCOOL DIY® coupler kits with and without communication wire, showing coupler sizes 3/8×1/4, 1/2×1/4, and 3/8×3/4 for line set extensions.

MRCOOL DIY® Coupler Kits & Line Set Extensions:...

Chill Masterson

Extending your MRCOOL DIY® system beyond the standard 25-foot line set? That’s where coupler kits come in. These Quick Connect fittings let you securely join two pre-charged line sets together...

MRCOOL DIY® Coupler Kits & Line Set Extensions:...

Chill Masterson

Extending your MRCOOL DIY® system beyond the standard 25-foot line set? That’s where coupler kits come in. These Quick Connect fittings let you securely join two pre-charged line sets together...