Resource Library

Use this estimator to determine a climate-adjusted coefficient of performance (COP) for the Aegis A CO2 Heat Pump Water Heater. This estimator also includes instructions on modeling storage losses associated with water storage tanks per Lync by WATTS' available products. This estimator is applicable for the 250, 350 and 500 models.

Use this estimator to determine a climate-adjusted coefficient of performance (COP) for the Transom Heat Pump Water Heater. This estimator is applicable for the V105, V210 and V420 models.

Use this estimator to determine a climate-adjusted coefficient of performance (COP) for the ECO2 CO2 Heat Pump Water Heater. This estimator also includes instructions on modeling storage losses associated with water storage tanks and swing tanks per ECO2's available products. This estimator is applicable for Gen 1 through Gen 5.

Use this estimator to determine a climate-adjusted coefficient of performance (COP) for the Daikin Mega-Q Heat Pump Water Heater. This estimator is applicable for the RXHWQ120MQTJA heat source unit model paired with the BWLP120TJU cascade unit model.

Use this estimator to determine a climate-adjusted coefficient of performance (COP) for the Ice Air ccHPWH. This estimator is applicable for the 275-D-B, 275-S-B, 550-D-B and 550-S-B models.

Use this estimator to determine a climate-adjusted coefficient of performance (COP) for the Mitsubishi QAHV CO2 Heat Pump Water Heater. This estimator is applicable for the N136TAU-HPB and N136YAU-HPB models.

This calculator is used to determine project-specific performance criteria for Phius 2024 New Construction projects using WUFI Passive. Projects submitted using METr now have the criteria calculator built into the software directly.

This calculator can be used to determine psi-values for 2-D thermal bridges in combination with THERM.

The Phius Certification Guidebook is the one-stop-shop for all things related to the Phius project certification program.

Use this estimator to determine if a building targeting Phius Certification is required to provide a dedicated make-up air system when using intermittent direct exhaust systems such as exhaust dryers or exhaust kitchen range hoods.