Home Energy

Compare current and proposed skylights for peak summer heat gain and estimated yearly heating and cooling cost changes.

Compare washer-dryer combo and separate unit lifetime costs using prices, energy use, utility rates, repairs, and replacement timing.

Compare infrared and traditional electric sauna purchase, setup, and electricity costs over the years you plan to own them.

Estimate HVAC UV light upfront, electricity, lamp replacement, first-year, and 5-year costs from your quote and local power rate.

Estimate yearly heating and cooling cost for outdoor makeup air drawn in by a residential range hood.

Compare high-velocity and conventional HVAC costs for energy, maintenance, replacements, and the first crossover year.

Estimate powered attic fan CFM, fan count, and the outdoor-air intake NFA needed for a confirmed vented attic.

Compare standard and cold-climate heat pump lifetime costs, annual heating costs, break-even year, auxiliary heat, and 5 F capacity.

Estimate wine cellar cooling capacity, monthly electricity use, and operating cost from room size, insulation, unit power, and run time.

Compare two portable AC models by purchase price, power use, seasonal electricity cost, lifetime cost, and dual-hose payback time.