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It is common for mechanical systems in residential construction to be oversized which increases installation costs, wastes energy, and reduces comfort and moisture control. Properly sized equipment wi...
Heating and cooling system design loads for the purpose of sizing systems and equipment should be calculated in accordance with generally accepted engineering standards and handbooks such as ASHRAE Ha...
High efficiency equipment costs more than standard models but reducing equipment size through energy improvements to the building envelope offsets this extra cost.
EnergyStar Heat Pumps (71 KB)
Space conditioning is the largest used in energy in a residence, accounting for 40 percent of the average home's energy costs and more in extreme climates.
This article is based on Mechanical questions asked during the August 18, 2005 COMcheck Web-based training session as well as questions received through email.
Air Source Heat Pumps (188 kb)Summary: This fact sheet will provide you with an overview of air-source heat pumps for home heating and cooling.
Heat Pump Water Heaters - Commercial (166 KB)Heat pumps use a wellestablished technology for space heating. The same principal of transferring heat is at work in heat pump water heaters (HPWHs) except that they extract heat from air (indoor, exh...
Heating and Cooling Equipment Selection (139 kb)A typical family may spend 60 percent or more of its annual utility budget on heating and cooling.
Heat Pump Water Heaters- Residential (120 KB)Heat pumps are a wellestablished technology for space heating. The same principal of transferring heat is at work in heat pump water heaters (HPWHs) except that they extract heat from air (indoor, exh...
Right-Size Heating and Cooling Equipment (181 KB)Determining the correct size of residential heating and cooling equipment is key to acheiving comfortable interior conditions-temperature and humidity-and saving on initial and operating costs.