With some maintenance, a Heat Pump should last about 15 years. I usually recommend replacement when a major problem comes up; like a compressor or a coil replacement. I replaced my old 10 SEER Heat Pump last year. It was 16 years old. With the new 15 SEER Heat Pump, I am saving about $100/month on our electric bill. With a new system, you also get a 10 year parts warranty and a one year labor warranty. So, New System, More Efficient, Short Term Payback in Energy Savings, and 10 year warranty; why wouldn’t you replace that broke down old Heat Pump? Call Foothills Mechanical Service for a Heat Pump Replacement today.