03
Oct
R-454B vs R-32 vs R-410A: Which Refrigerant Does Your System Use?
How R-454B, R-32 and R-410A compare on GWP, safety class and service practice, and why new A/C and heat pumps are moving to A2L refrigerants.
Guides
03
Oct
Can You Still Buy R-22 Refrigerant in 2026? What You Need to Know
New R-22 production ended in 2020, but servicing existing systems is still legal. Who can buy R-22, why it costs so much, and when to replace instead.
03
Oct
Condensing vs Non-Condensing Tankless Water Heaters: How to Choose
Condensing or non-condensing tankless water heater? Compare efficiency, venting, installation cost and sizing for Navien and Rinnai models.