Henry County · about 10 minutes south on I-75
Heating Installation in McDonough, GA
A heating replacement in McDonough is a better decision in October than in January. We are about ten minutes north on I-75.
Replacing builder-grade heat in McDonough
McDonough grew in waves, and every wave arrived with whatever heat pump was standard that year. If your house went up in the 2000s you are probably on the original outdoor unit or the first replacement, and the first one was very likely the cheapest box that met code. That is worth knowing when you decide what replaces it.
One thing to settle early: outdoor unit only, or the matched set. Pairing a new heat pump with an old air handler is legal, cheaper on the day, and frequently a false economy — the two halves are engineered together. Sometimes a partial replacement genuinely is the right call. We will tell you which one you are looking at.
Auxiliary heat strips are the other conversation. They are the backup, not the heating system. If they have been carrying the house, the install is not just a new box — it is making sure the new one actually heats without leaning on the expensive half all winter.
When a new heating system is the honest call
- The heat pump compressor is gone and the unit is well past ten years old
- Emergency heat has been carrying the house and the bill shows it
- The furnace heat exchanger is cracked or the cabinet is rusting through
- It needs a major repair every winter
- One floor never gets warm, no matter what the thermostat says
From the Google listing
4.9 stars, 18 reviews, owner-operated.
Real reviews, published exactly as they were written. Every one of them is on the Google listing under McGrath Mechanical.
McGrath Mechanical is my go to choice for HVAC repairs and installation. As a property manager of properties all over the Atlanta area, I need a reliable HVAC source that will show up, diagnose the problem correctly, tell me the truth and make the repair at a reasonable cost. McGrath does exactly that! New system installations are efficient and affordable as well. I highly recommend James at McGrath Mechanical!
If he says he will be there then he will. James is fast, reliable, and gets the job done. I thought I needed a new unit but that wasn’t the problem. After about 30 minutes he had us up and running again. Any questions I had he was able to give me an answer. Highly recommend