There will be wear and tear, as with everything, including the human body. HVAC systems will require tune-ups from time to time, but if it needs an expensive gas furnace/heater repair, it is wiser to invest in new HVAC equipment, especially if it is more than many years old, even if you repair the mechanical problems, bringing aging, for instance, the furnace back to peak efficiency, is almost impossible, the equipment has to work harder, breaking down more often, and you fall into a vicious and expensive cycle, a new heat pump may cost a lot initially, but it will save you money on future repairs as well as your utility bills and help with indoor comfort. You could save a substantial percentage on your energy cost by upgrading to equipment with new HVAC technology. The other thing that may spell out disaster for your equipment is the sounds coming from it. A hum when the plan is running is okay, but when it turns loud as well as aggressive, it could indicate a drastic malfunction. Equipment will often need help to give quality heating. The temperature inconsistency could result from numerous problems such as a damaged or faulty thermostat, low fluid levels, obstructed gas furnace filters, cracked ducts, or drastic motor damage. Another concern is if you are experiencing poor indoor air conditions. All cooling and heating devices need proper HVAC repair done by an HVAC professional to run efficiently, prolong their lifespan, and avoid the problems mentioned above, however if you have noticed some of these problems, contact your HVAC supplier immediately as well as have an HVAC repairman repair the underlying problems, please do not wait too long to repair it because the longer you delay, the worse the issue gets, but when you learn more about heating, you realize that heat pump repair is non-negotiable to achieve a comfortable home.