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A suitable heat pump must be sized for a building’s design heating and cooling loads. Learn what to check, compare, and verify before making a decision.

A heat pump transfers heat and its effective efficiency depends on outdoor conditions. Learn what to check, compare, and verify before making a decision.

Indoor unit placement and room heat loads determine whether a mini-split provides even comfort. Learn what to check, compare, and verify before making a decision.

A commercial rooftop unit affects ventilation, tenant comfort, electrical distribution and sometimes roof structure. Learn what to check, compare, and verify before making a decision.

A sudden failure during hot weather may justify emergency service, particularly for vulnerable occupants. Learn what to check, compare, and verify before making a decision.

Poor cooling may result from airflow restrictions, dirty coils, refrigerant leakage, controls or electrical faults. Learn what to check, compare, and verify before making a decision.

Cold-weather performance depends on the unit’s actual heating capacity as temperatures fall. Learn what to check, compare, and verify before making a decision.

Preventive maintenance should identify filters, coils, electrical components, condensate systems and controls appropriate to the equipment. Learn what to check, compare, and verify before making a decision.

A hydronic heat pump can require different flow temperatures from a conventional boiler. Learn what to check, compare, and verify before making a decision.

Indoor pollutants can come from cooking, moisture, smoke or building materials. Learn what to check, compare, and verify before making a decision.