What Makes a ClimateMaster Geothermal System Green
It does not make heat, it relocates heat already in your yard. Nothing burns. Electricity buys transportation instead of BTUs, and because the ground holds close to 60 degrees all year, the machine never hauls that heat far.
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I am Dave Hartzell, 47 years in this trade, IGSHPA accredited and a ClimateMaster GeoElite dealer. The general case is on why geothermal is considered green energy. This page is the mechanism.
A furnace manufactures heat. This machine buys it a ride.
A furnace can never hand you more energy than the fuel it burned. That wall is real, and it applies to anything that makes heat. A ClimateMaster water source unit manufactures nothing, so the wall does not apply to it. It has more in common with a sump pump: the electricity does not become the warmth at the register, it turns a compressor and a circulator that drag heat uphill, out of ground near 60 degrees into a house near 70, a trip heat will not make on its own.
So a coefficient of performance around 4.5, roughly $4.50 of heat for every $1 of electricity, bends no rules. One unit came out of the wire, 3.5 came out of the dirt where the sun left them free, and the books balance. A ratio above 1 is not an efficiency figure, it is heat delivered divided by work purchased. It only looks impossible when you forget to count the source. See what COP means.
How the box actually forces heat to go uphill
The whole trick is one sentence: the temperature at which a liquid boils depends on the pressure it is under. Water boils at 212 at sea level and lower on a mountain. Refrigerants do the same, over a range that suits a house. Control the pressure and you choose the temperature at which the refrigerant picks heat up or gives it back.
In heating, in order:
- An expansion device drops the pressure on liquid refrigerant, so its boiling point falls below the temperature of the water coming off your loop.
- In the coax heat exchanger the refrigerant is now colder than that loop water, so heat flows the only direction it can, into the refrigerant, and boils it.
- The compressor squeezes that vapor. Raising the pressure raises the temperature at which it will condense, above the air coming back from your house.
- At the air coil the refrigerant is now the hotter of the two, so heat flows out of it into your air and it condenses.
- Back to the expansion device, and around again. In summer the same cycle runs backwards.
Nothing burned and nothing was created. At every stage the machine arranged for one side to be colder than the other, so heat moved in a direction already downhill. The compressor is the only part fighting anything, and what it fights has a name.
Lift, and why the ground is the green part
Lift is the gap the compressor bridges between where it picks heat up and where it drops it off. That gap costs work, and the work climbs with the gap. Lift is the bill.
An air source condenser trades with Oklahoma air, and Oklahoma air is violent: heat pulled out of air in the teens in January, heat shoved into a brutal afternoon in July. The hill is tallest on the day you need the most out of the equipment.
A ClimateMaster water to air unit trades with your loop instead, and a few feet down Oklahoma ground sits close to 60 degrees all year, warmed by the sun and nothing volcanic. Same delivered BTUs, much shorter hill, lower head pressure and fewer amps for the same job.
The ground is not magic, it is boring. It never gets the memo about the weather, so the machine is never asked to do the expensive version of the job. See how a geothermal heat pump works.
ClimateMaster builds these an hour from where I bury the loop
ClimateMaster manufactures water source and geothermal heat pumps and is headquartered in Oklahoma City, in what the company describes as a 510,000 square foot plant supporting over 600 American jobs. The unit going into an Oklahoma mechanical room was built about an hour from the ground it will trade heat with, and parts and support sit in the same state. Options and pricing: ClimateMaster geothermal Oklahoma.
I will not quote a shipping carbon figure I do not have, or read you a spec sheet I have not verified. Ratings and refrigerant charge belong to the model on your quote, and I will hand you that documentation before you sign.
Heat that used to go into your yard can go into your water tank
All summer a geothermal system pushes your house’s heat into the ground. A desuperheater taps the hottest part of the refrigerant line, through a double wall exchanger so nothing can mix with your drinking water, and sends that heat to your water heater.
That is waste heat recovery, not an efficiency claim. The compressor was already running and that heat was headed into the dirt anyway, so capturing it costs nothing. In winter it is a smaller win, because then it competes with heat you wanted. See what a desuperheater is.
This is not a zero emission machine, and I will not sell it as one
Nothing burns at your house. No flame, no flue, no gas or propane on site, and no carbon monoxide from the heating system, because carbon monoxide comes from combustion.
But it runs on electricity, so its footprint is your grid’s footprint. What differs is the direction of travel: a furnace burns the same fuel in year twenty as on day one, while an electric machine inherits whatever the grid becomes. Full case on the green energy page.
Refrigerant matters for one reason: what happens if the charge gets out, not what it does sealed inside. That is why the industry has moved toward lower global warming potential refrigerants under the AIM Act phase down. I am not printing a number, because the rating belongs to the model on your quote. If that quote lands on R-454B, the indoor side has to be matched components, never a reused coil.
Count the hardware, not just the kilowatts
Efficiency arguments count the energy a system burns, almost never the building of the system itself. A ground loop is fused plastic pipe in a sealed circuit, buried once and expected to outlive several generations of equipment. The heat pump lives indoors: no sun, no hail, no ice, no grass clippings in a coil.
Set that against an outdoor condenser in an Oklahoma side yard, replaced, and replaced again. Every one is a compressor, a coil, a fan motor and a cabinet of steel and copper that had to be mined, built, trucked and scrapped. Hardware you never build is the cleanest hardware there is.
Questions about geothermal and the environment
What makes a ClimateMaster geothermal heat pump green in Oklahoma?
It moves heat instead of burning fuel to make it, and it trades with ground near 60 degrees year round instead of Oklahoma air. Nothing combusts at the house, and the short temperature gap means less compressor work per BTU.
How can a heat pump deliver more energy than it uses?
It does not. It delivers more heat than the electricity it buys, because most of that heat came out of the ground, not the wire. At a coefficient of performance near 4.5, one unit of electricity plus 3.5 from the ground equals 4.5 delivered.
Where are ClimateMaster geothermal units made?
ClimateMaster is headquartered in Oklahoma City and manufactures water source and geothermal heat pumps there, about an hour from most of the Oklahoma homes they go into.
Want this checked against your actual house?
Geothermal costs more up front, every time. I sell it as the premium system because that is what it is: it does the cheap version of the job on the days a conventional system does the expensive one.
Tell me what you heat with and bring me your address, and I will check which Oklahoma utility rebates are active where you live. A diagnostic on a geothermal system you already own is $348 flat, any hour. New system estimates are free.
Master HVAC License · NATE Certified · IGSHPA Accredited · ClimateMaster GeoElite. Geothermal is statewide across Oklahoma.