Monobloc
- Hydronic connections outside
- Simpler refrigerant handling on site
- Freeze protection needs attention
Split
- Refrigerant piping between indoor/outdoor
- Reduced freeze risk in external water lines
- Requires qualified refrigerant work
Monobloc vs Split Heat Pumps: A Clear, Non-Religious Comparison
Both designs can work brilliantly. The “right” choice depends on installation constraints, service access, and freeze risk.