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.
1 Upgrading from an older cooling system with a low SEER rating to a new one with a higher SEER rating can produce significant energy savings year in and year out. 2  The most efficient heat pumps have SEERs of between 14 and 18.f you have electric heat, a heat pump can reduce your electric consumption by as much as 30%â40%. High-efficiency heat pumps also reduce humidity better than standard central air conditioners, resulting in less energy usage and more cooling comfort in summer months.