Home Energy

Total steam radiator EDR, convert it to BTU/hr, and compare it with a boiler’s published Net AHRI Steam rating.

Calculate added buffer tank or volumizer water volume from heat pump output, zone load, run time, temperature swing, and manual minimums.

Check ECM circulator flow margin at design head, annual electricity savings, and simple payback using your watts, runtime, rate, and costs.

Calculate minimum hydronic expansion tank size, acceptance volume, and target pre-charge from water volume, temperatures, and pressures.

Estimate annual savings and simple payback for converting steam heating to hot-water heating using bills, quotes, and savings cases.

Compare home-run PEX and trunk-and-branch layouts for hot-water wait time, wasted water, utility expense, and ownership-period cost.

Estimate annual water and sewer usage-charge savings, net PRV project cost after rebate, and simple payback from your bills and quote.

Estimate range hood CFM, compare a candidate hood, and check hood outlet and existing duct opening sizes.

Estimate furnace airflow in CFM from output, supply and return temperatures, then compare temperature rise with the nameplate range.

Convert HSPF, HSPF2, EER, or COP to a comparable energy ratio while keeping seasonal and operating-condition ratings separate.