Three Aging Trane Systems in One Home
Liberty Air and Electric inspected three Trane systems in this home. All three installed around the same time, all three in different shape now.
Unit one was dead. Big refrigerant leak. Not worth fixing on a system that age. The refrigerant alone would have cost more than the unit was worth.
Unit two was still running but in rough shape. Three AC repair calls in the last two seasons. Capacitor, blower motor issue, drain line. The next call was coming.
Unit three was still working fine.
So the question on the call: replace just the dead one, replace the dead one and the limping one, or take the bigger move and replace all three.
Installing Three Daikin DH7TC Systems
All three Trane units came out. Three Daikin DH7TC 2-stage communicating systems went in.
Manual J load calc on each unit before any equipment got ordered. The previous installer had sized them right even if the equipment was past its life, so we matched the same total tonnage on the new units. Existing electrical handled the new equipment with a couple of breaker corrections where the DH7TC's draw landed on the higher side.
The DH7TC pairs a 2-stage compressor with Daikin's communicating control board. Indoor unit, outdoor unit, and thermostat talk to each other. Steadier operation and better fault detection across all three systems. Refrigerant is R-32, which is what Daikin has been running globally for years.
Why Replace All Three AC Systems at Once
Liberty Air and Electric priced all three at once well under doing them one at a time across five years.
Premium-tier AC replacement at this size, with Daikin DH7TC communicating equipment, typically runs $10-12k installed per unit. Three separate replacements over the next five to seven years would mean three trip charges and three install days. Each one carries its own labor and permit costs.
Bundling all three into a single project let us offer a discount that doesn't exist on the staggered path. Total for three Daikin DH7TC systems came in at $27,000 to $30,000 installed.
Why Daikin DH7TC for this home, four reasons:
- 12-year parts warranty. Daikin's standard 12-year parts coverage is two years longer than the industry-standard 10. On equipment that should run 15-20 years, those extra two years matter.
- 2-stage compressor. Modulates between high and low based on demand. In Florida especially, that steadier run pulls more humidity out of the air than equipment that runs flat-out and shuts off.
- Communicating system. Indoor and outdoor units stay synced. Self-tuning behavior and fewer mismatched-component issues.
- R-32 refrigerant. Daikin has been on R-32 longer than most US brands have been on R-454B. Parts are easy to get and techs already know how to work on it.
Lower Power Bills and Better Humidity Control
Three Daikin DH7TC systems running on R-32 with 12 years of parts coverage. The home is on one brand and one equipment generation now.
The bill dropped. That's what the homeowner told us, and we never metered the house before and after to put a number on it. Three 2-stage Daikin systems running steady part-load pull less power than three older single-stage Trane units cycling hard all afternoon.
Humidity got better. The homeowner says the house doesn't feel sticky anymore. 2-stage compressors run longer and slower than single-stage equipment, which is exactly what gets moisture out of the air instead of just dropping the temperature. You want a house sitting between 45 and 55% relative humidity. Past 55% is where it starts feeling sticky.
The communicating system also gives the homeowner real-time visibility into each zone from a single touchscreen, including humidity readings the original Trane equipment never exposed.
When something does need attention years from now, it'll be one playbook across the whole house. Same parts catalog, same diagnostic tools, same warranty terms.
Multi-System AC Replacement in Wedgefield
Plenty of Wedgefield homes have two or three systems instead of one large central unit. The Estate-section homes especially. When the original installer set the equipment up at the same time, the units age together too. One unit failing doesn't mean the other two have years of healthy life left. Usually they're a season or two behind.
That's why we check all three systems on a call like this. Sometimes the answer is one. Sometimes it's all three. We tell you which one this looks like, and we run the numbers both ways so the math is in the open.