Invictus, meaning unconquerable or undefeated in Latin, is a poem by William Ernest Henley. The poem was written while Henley was in the hospital being treated for tuberculosis of the bone, also known as Pott's disease.
Expect to pay as much as $5,000 to $7,500 for a ground-source heat pump system. Air-source heat pumps can be found for much cheaper, averaging around $1,500 to $4,000, because the units tend to be simpler, and installation is easier. The cost required to run and repair a heat pump varies with the type of system.It's less expensive to run a ground-source heat pump because the ground and water have a relatively constant temperature that allows the heat pump to operate efficiently.Ground-source systems also have the advantage of not being exposed to the outdoor weather, which prevents a lot of wear and tear.xpect to pay as much as $5,000 to $7,500 for a ground-source heat pump system. Air-source heat pumps can be found for much cheaper, averaging around $1,500 to $4,000, because the units tend to be simpler, and installation is easier. The cost required to run and repair a heat pump varies with the type of system.
Using these prices, a heat pump with a COP of 3.5 in moderate climate would cost $0.97 to provide one therm of heat, while a high efficiency gas furnace with 95% efficiency would cost $1.22 to provide one therm of heat. With these average prices, the heat pump costs 20% less to provide the same amount of heat.igher COPs equate to lower operating costs. The COP may exceed 1, because, instead of just converting electricity to heat (which, if 100% efficient, would be a COP of 1), it pumps additional heat from a heat source to where the heat is required.