Geothermal vs Trane 18 SEER Calculator

15+ years • 6,500+ jobs completed • 1,500+ Oklahoma homes served

Straightforward pricing

Geothermal diagnostic: $348 flat. Full performance audit: loop pressure, refrigerant charge, desuperheater, controls, heat exchanger. Written report and quote before I leave. No credit, no refund.
Standard service call: $210 flat ($99 dispatch plus $111 diagnostic). Take a repair estimate within 10 days and I give back the $99 dispatch fee.
New-system estimates are free. No charge to compare geothermal and Trane options for your home.

Call 405-375-4822. 4.8 stars, 300+ Google reviews.

Geothermal vs Trane 18 SEER Calculator
The honest premium-vs-premium comparison, from a dealer who sells both

I install ClimateMaster geothermal and I am also a Trane TCS SELECT dealer, so I am not comparing geothermal against some builder-grade unit to make it look good. This calculator sets my ClimateMaster Tranquility geothermal system, with a water desuperheater, against a Trane 18 SEER air-source heat pump, the best of what I sell on each side. Punch in your numbers and see where they actually land.

Compare Your Home

How this is modeled, plain and up front: electric rate $0.12/kWh. Trane modeled at 18 SEER cooling and 9.5 HSPF heating, a representative premium variable-speed air-source heat pump rating, not a specific published spec for one model. ClimateMaster Tranquility modeled at EER 24 cooling and a heating COP of 4.2 (the line is rated up to 4.5, I use a more conservative number here). Oklahoma heating and cooling load split modeled 45 percent heating, 55 percent cooling. These are estimates. I run a real Manual J load calculation at your house before any number becomes a quote.

Home Size (sq ft)

Your County

Current System

System Size (tons)

Domestic hot water, the desuperheater edge

What ownership actually looks like

Want the real number for your house?
I run a full Manual J load calculation, no guessing, and quote both systems the same visit.
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Or call 405-375-4822, free estimate, no pressure

Example: 2,000 sq. ft. home, Kingfisher County, natural gas furnace now, 4-ton system

JavaScript is off, so here is a fixed example instead of the live calculator. Turn on JavaScript above to run your own numbers.

Item	Trane 18 SEER	ClimateMaster Tranquility
Modeled annual energy cost	$673	$469
Modeled installed cost (4 tons)	$12,000	$22,000
Kingfisher County utility rebate	not applicable	$600 to $4,000
Net cost after rebate	$12,000	$18,000 to $21,400
Monthly at $0 down, 120 months	$100/mo (comparison only)	$183/mo (Palmetto example only; not a quote or approval)

Energy saved vs the Trane: about 30 percent, roughly $204 a year, modeled. Compared to the natural gas furnace this home has now: about 41 percent, roughly $447 a year. Desuperheater hot water offset: roughly $100 to $150 a year, geothermal only. I do not promise a 2026 federal tax credit, check current IRS and ENERGY STAR guidance with your tax professional. Call Dave at 405-375-4822 for the real number from a Manual J at your house.

These are modeled estimates built from published-style SEER, HSPF, EER, and COP ratings and Oklahoma average energy prices, not a quote for your specific equipment. Actual results depend on your home’s insulation, ductwork, orientation, usage, and your utility’s current rate and rebate. A Manual J load calculation, which I include with every free estimate, gives you the real number. Full county-by-county rebate detail: Oklahoma geothermal rebates 2026. General geothermal savings tool: geothermal savings calculator.

Why I Compare Geothermal Against My Own Trane 18 SEER, Not a Cheap Unit

Most geothermal savings pitches compare against whatever is cheapest to beat. I do not need to do that. I am a Trane TCS SELECT dealer and a ClimateMaster GeoElite dealer, so the Trane 18 SEER in this calculator is a system I stand behind and would happily install in my own house. When geothermal still comes out ahead against that, on Oklahoma’s real winters and real summers, it is because the ground stays around 60 degrees year round while outdoor air swings from single digits to over 100. An air-source heat pump, even a very good one, has to fight that swing. Geothermal does not.

The honest tradeoff: geothermal costs more to install because of the ground loop, and there is real disruption in the yard while I drill or trench it in. Utility rebates and the desuperheater’s hot water offset help close that gap, and financing spreads it out further. Whether it pencils out for your house depends on your rate, your usage, and how long you plan to stay. I will tell you straight if a Trane makes more sense for your situation.

How much does a geothermal system save compared to a Trane 18 SEER heat pump in Oklahoma?

In this calculator, modeled savings against my Trane 18 SEER line land around 30 percent on blended heating and cooling energy, because I am comparing two premium systems I actually install, not geothermal against a cheap builder-grade unit. Compared to an older heat pump or a gas furnace, the gap is bigger, often close to half. Run your own numbers above.

Is ClimateMaster Tranquility better than a Trane 18 SEER heat pump?

I sell both and I am a dealer for both, a Trane TCS SELECT dealer and a ClimateMaster GeoElite dealer. Tranquility geothermal draws off stable ground temperature instead of outdoor air, so it holds its efficiency on the coldest Oklahoma nights when an air-source heat pump like the Trane is working hardest. The tradeoff is a higher install cost and a loop dig in the yard.

What does a geothermal desuperheater do for hot water?

It captures heat the system is already rejecting while the compressor runs and uses it to preheat your water heater. Conservatively, that is 20 to 30 percent off a typical $500-a-year electric water heating bill, mostly during cooling season. The Trane 18 SEER has no equivalent, it is a Tranquility-only advantage.

How much does geothermal cost compared to a Trane 18 SEER system in Kingfisher Oklahoma?

Geothermal costs more up front, mainly the ground loop. In the 7 counties I run daily, utility rebates can bring $600 to $4,000 back depending on your utility, and I handle that paperwork. The exact number needs a real in-home estimate, this calculator is a starting point, not a quote.

Can I finance a geothermal system with $0 down in Oklahoma?

For qualified homeowners, Hartzell can review the ClimateMaster Geothermal Comfort Plan powered by Palmetto. Approved examples show $0 upfront and 120 monthly payments, but site numbers are illustrations only, not a quote or approval. Final payment, tax, rebate, buyout, coverage, renewal, and eligibility terms come from Palmetto and the agreement. I also work with Synchrony, Wells Fargo, Wisetack, Klarna, and JB Financing for repairs, PMAs, or a Trane system instead.

Is there a federal tax credit for geothermal in 2026?

No for residential 2026 installs. Current IRS guidance says the residential clean energy credit is not available for property placed in service after December 31, 2025. Oklahoma utility rebates may still apply when the utility and project qualify, and I handle the paperwork I can verify.

Free Geothermal vs Trane Estimate

I will run a real Manual J load calculation, quote both a ClimateMaster Tranquility geothermal system and a Trane 18 SEER heat pump for your house, and tell you honestly which one makes more sense. No pressure.

Call Dave: 405-375-4822

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