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RTU HVAC for Commercial Buildings: How to Select, Buy and Maintain a Rooftop Unit
An RTU HVAC system is a facility decision. A commercial rooftop unit must account…
Water-to-Water Heat Pumps: How They Work, Types and Costs
A Water-to-Water Heat Pump system moves heat between a source-water circuit and a building’s…
Heat Pumps vs Boilers in Commercial Hydronic Heating: Supply Temperature, Break-Even COP, and Retrofit Sizing
Legacy commercial non-condensing boilers supply 70°C to 82°C (158°F to 180°F) hot water with…
Cold Climate Heat Pump Guide: How Winter Performance Works
By Cherry · Updated October 2026 A Cold Climate Heat Pump draws heat from…
CO2 Heat Pumps for Commercial Hot Water: Temperature Lift and System Fit
Updated October 2026 CO2 heat pumps use carbon dioxide refrigerant, also called R744, to…
Ground-source Heat Pump Guide: How It Works, Types and Trade-offs
Ground-source Heat Pump: Is It Right for Your Site? A Ground-source Heat Pump uses…
Condenser Water Supply Temperature: Setpoints, Tower Limits and Chiller Protection
Updated October 2026 Quick Specs Application: recirculating, tower-based commercial and industrial chiller plants. Supply…
Commercial Geothermal Systems: Ground-Loop Feasibility Before Equipment Selection
Commercial geothermal systems are viable when the site can accommodate a ground heat exchanger…
AHRI 920 for DOAS: How Buyers Should Read Rated Performance
Updated October 2026 · Commercial equipment selection AHRI 920 establishes methods for rating the…
