An official website of the United States government
Here's how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Study in which a central heat pump water heater system was monitored in detail and used to create a model for assessing similar systems in various climates.
Study focusing on the installation of a new commercial heat pump water heating system installed as a retrofit in a 100-unit, low-income senior housing building in Seattle, WA.
Study demonstrating the performance of multiple CO 2 heat pump water heaters utilized in a “swing tank” CHPWH system design in a 60-unit low-rise multifamily building in the Pacific Northwest.
Case study describing an effort to research, design, verify, and document a heat pump water heating system for a multifamily building using the building sewage as the heat pump’s heat source.
S V Airtech Pvt.Ltd Comfort & Clean Air Solution Authorized Corporate Sale & Service Dealer HVAC is an acronym that stands for Heating, Ventilation, and Air Conditioning. The term HVAC is used to describe a complete home comfort system that can be used to heat and cool your home, as well as provide...
What this tool does This tool allows you to calculate the annual cost of heating domestic hot water. In addition, you may compare the annual costs of up to three systems to a base system. Four water heating fuel types are available; electricity, natural gas, LPG, and #2 oil. You can use this tool...
What this tool does This tool determines the volume of hot water used given an amount of mixed (hot + cold) water used and the temperatures of the hot, cold, and mixed water. The amount of mixed water can be specified by volume directly, or from a flow rate and duration. Calculated values Hot water...
What this tool does This is a “solve-all” tool that relates the volume of water drawn, the duration of the water draw, and the flow rate. The primary expected use case is determining flow rate using a test container with a known volume and a stopwatch. The tool was developed as an aid in using the...
What this tool does This tool allows you to easily calculate the annual electrical cost of operating a ventilation fan or any other electrical appliance that is set up for continuous or intermittent use. If the fan is set up for intermittent use, you will need to know the operating schedule in order...
What this tool does First, the embedded Google map feature helps you find the closest (TMY) weather station when your location is close to a state/province or national border and the closest station is actually in a different state/province/country. These are the same weather stations that are used...