Quick answer
For most Fort Worth and DFW homes, the right new system is one sized by a Manual J load calculation, rated at or above the current SEER2 minimum for Texas, matched indoors and out, and installed by a licensed contractor who gives you one written price. The installation and sizing matter more to comfort and lifespan than the brand name on the box.
Replacing a heating and cooling system is one of the bigger purchases a homeowner makes, and most people only do it once or twice. The ratings, model numbers, and sales talk can make it hard to compare one quote with another.
This guide walks through what actually matters for a North Texas home, where long, humid summers put far more hours on an air conditioner than the winters put on a furnace.
Step 1: Decide What Kind of System Fits Your Home
- Central AC with a gas furnace: the most common setup in Tarrant County. The furnace heats with natural gas and the outdoor unit cools.
- Heat pump with an air handler: one outdoor unit both cools and heats with electricity. A good fit for all-electric homes and mild DFW winters, usually with backup electric heat for hard freezes.
- Dual-fuel: a heat pump paired with a gas furnace. The heat pump handles most of the heating, and the furnace takes over on the coldest days.
- Ductless mini-split: individual indoor heads with no ductwork. Best for additions, garage conversions, sunrooms, and rooms the main system can't keep comfortable.
Step 2: Understand the Efficiency Ratings
SEER2 measures cooling efficiency. The higher the number, the less electricity the system uses to cool your home. New split-system air conditioners sold in Texas must meet the Department of Energy's minimum for the southern region, and higher-efficiency models go well above it. Because DFW summers are long, the jump to a higher SEER2 pays back faster here than in cooler parts of the country.
AFUE measures how much of the gas a furnace burns becomes heat in your home. An 80% furnace vents the rest up a metal flue; a 95% or higher condensing furnace captures more heat and vents through plastic pipe, which can change what the installation involves.
HSPF2 measures a heat pump's heating efficiency. If you're comparing heat pumps, look at both SEER2 and HSPF2.
- Use our energy savings calculator to estimate what a higher SEER2 rating could save on cooling.
- Compare quotes using the AHRI-matched rating of the full system (outdoor unit, indoor coil, and furnace or air handler together), not the outdoor unit's best-case number.
Step 3: Insist on Proper Sizing
Bigger isn't better. An oversized air conditioner cools the house quickly, shuts off, and never runs long enough to pull humidity out of the air, so the home feels cold and clammy. An undersized system runs nonstop on the hottest afternoons.
The right size comes from a Manual J load calculation, which looks at your home's square footage, insulation, windows, orientation, and ceiling heights. Manual S then picks equipment that matches that load, and Manual D checks that the ductwork can move the air. A quote that sizes a system only by replacing "the same tonnage you have now" skips that work.
Step 4: Know the Refrigerant in a New System
New air conditioners and heat pumps now use lower-impact refrigerants such as R-454B and R-32 in place of R-410A. That's normal, and it's one more reason the indoor coil and outdoor unit should be replaced together as a matched system. If your current system still uses R-22, repair options are limited and replacement is usually the better long-term choice.
Step 5: Choose a Brand, Then Choose the Installer
Most major brands build reliable equipment, and the same brand can perform very differently depending on how it's installed. We install and service all major brands, and Family First Comfort is a Daikin Comfort Pro Dealer, Trane Comfort Specialist, Lennox Premier Dealer, Fujitsu Elite Contractor.
When you compare brands, look at the parts warranty length, whether it requires registration, how easy parts are to get locally, and whether the model's features (variable speed, two-stage heating, smart controls) are worth it for your home.
Step 6: Compare Quotes Line by Line
- Model numbers for every piece of equipment, not just a brand and tonnage.
- Whether a load calculation was done, and the result.
- What's included: new indoor coil, line set, drain pan, float switch, thermostat, pad, permits, haul-away.
- Parts warranty and labor warranty, in writing.
- One total price, with financing terms shown separately.