Coldest temperature they can run?

DIY mini-split systems run most efficiently down to around -5 degrees C. They will continue to work down to around -15 degrees C but become less efficient at extreme temperatures – you can view the tech specs here. MrCool Universal Series can heat effectively...

What’s the warranty?

Ductless Systems Standard Warranty – see HERE Lifetime limited warranty – please see HERE. Central Universal Systems Standard Warranty – see HERE Note: State-certified or licensed HVAC contractors are not required for a warranty on the DIY series...

How do you save me money?

We save you money on installation costs. Our patented pre-charged line sets allow you to install a heat pump yourself with no special tools, equipment or knowledge.  Doing it yourself or appointing a local handyman, will cost a fraction (up to 60% less) of what an...

How is it DIY?

It’s DIY because there’s no handling of refrigerant. Our patented Quick-Connect lines come pre-charged and sealed from the factory with the correct amount of R-410A refrigerant. This means there’s no requirement for an HVAC engineer to vacuum or pressurize the system...