Question by Dilbert: How much does it cost to install a heat pump to replace a 36-year old HVAC system for a 3-bedroom house?
The existing system uses natural gas for heat and a split indoor/outdoor system for the A/C. The new system would use a heat pump, whose outdoor coil should be underground to avoid being affected by freezing air in winter. The heat pump should be efficient enough to not need any secondary heating system, but just use the heat pump all the time, even on the coldest days, which should be possible because of the underground coil.
Best answer:
Answer by mike1942f
Because of the digging for the sunken coil, add a couple of thousand to the equipment cost, so ,000-10,000. Efficiency has little to do with it – whether it would require secondary would depend on soil conditions, average temperature in your area, etc.
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