Emerson Electric Co. D/B/A Fusite and Emerson Climate Technologies, Inc. v. Clarence Johnson

Texas Supreme Court·Decided April 16, 2021·No. 18-1181·Published

Opinion

IN THE SUPREME COURT OF TEXAS ════════════

NO. 18-1181

════════════

EMERSON ELECTRIC CO. D/B/A FUSITE AND EMERSON CLIMATE TECHNOLOGIES, INC., PETITIONERS,

v.

CLARENCE JOHNSON, RESPONDENT

══════════════════════════════════════════════════ ON PETITION FOR REVIEW FROM THE COURT OF APPEALS FOR THE SECOND DISTRICT OF TEXAS ══════════════════════════════════════════════════

Argued October 6, 2020

JUSTICE BLAND delivered the opinion of the Court.

For over a decade, an electric terminal manufacturer made two functionally identical terminals for essentially the same cost. The difference was that the older of the two designs was significantly more susceptible to catastrophic failure. A corporate affiliate of the terminal maker elected to use the older product in manufacturing new air conditioning compressors.

An experienced heating, venting, and air conditioning technician purchased and installed a compressor containing the older terminal design. Despite his experience in the HVAC industry, the technician could not know that the brand-new compressor incorporated the outdated technology inside the unit; nor did he know that the unusual noise emitting from the new compressor the day after he installed it was a sign of imminent danger. When the compressor

became overheated, the terminal emitted scalding pressurized fluids that ignited and covered the technician, resulting in serious burns.

A jury concluded that the older terminal design was unreasonably dangerous and that the design and the failure to warn of this hazard caused the technician’s injuries. The trial court rendered judgment on the jury’s verdict, and the court of appeals affirmed. The manufacturers seek to overturn the verdict on legal-sufficiency grounds, or to have another trial due to jury charge error. We conclude that legally sufficient evidence supports the jury’s design-defect finding and that the trial court’s jury charge did not result in an improper verdict. We therefore affirm the judgment of the court of appeals.

I

A

Clarence Johnson, the respondent, is an experienced and licensed HVAC technician.

Johnson maintained the air conditioning units on the rooftop of the Miller Food Mart in Fort Worth for two years before the accident. In August 2012, the Miller Food Mart owner called Johnson because the store’s air conditioning was not working. Johnson determined that the HVAC unit’s compressor would have to be replaced. That day, Johnson purchased and installed a new compressor, made and sold by petitioner Emerson Climate Technologies. The compressor incorporated an electric terminal designed by petitioner Emerson Electric Company, sold under the business name of “Fusite.”

The Emerson compressor contains an electric motor that pumps refrigerant fluid through an HVAC unit. To do so, the compressor must keep the fluid under constant high pressure and the unit must remain sealed airtight. Electricity enters the compressor through the terminal to run the

motor. The electricity travels through the terminal to the motor on metal pins encased in insulating glass. In the event of an electrical surge or arcing inside the compressor, the compressor, the pressurized fluids, and the terminal pins can become overheated. Overheated pins weaken the Fusite terminal’s insulating glass. When the insulating glass weakens, it does not hold the terminal pins in place. The heated, pressurized contents inside the compressor can expel the pins, spraying scalding refrigerant and oil through the no-longer-sealed electric terminal.

The unintended release of a compressor’s pressurized contents when the seal breaks on the terminal is known in the industry as “terminal venting.” To mitigate the risk of terminal venting, Fusite places a horizontal groove on at least one terminal pin. In the event of a power surge, this pin snaps at the groove and cuts off power to the motor inside the compressor. The groove prevents the pressurized contents from pushing out the pins and venting.

The electric terminal welded to the compressor in this case was a Fusite 600 series model.

In this model, the horizontal groove on the pin is etched on the lower part of the pin, inside the compressor’s insulating glass. Although the groove eventually cuts off power, it snaps too late to prevent venting when the insulating glass that holds the terminal pins, exposed to high heat, fails before the grooved pin snaps.

For at least fifteen years before Johnson bought the Emerson compressor involved in this accident, Fusite marketed another terminal, the 700 series. Crucially, in this design, Fusite moved the pin groove to just outside the insulating glass. This small change—which cost Fusite nothing 1—interrupts a power surge before it weakens the terminal’s insulating glass. In Fusite’s

1 Though Fusite appears to have charged a ten-cent premium for the 700 series terminal over the 600 series, its corporate representative testified that moving the groove on the pin to its new location resulted in no cost increase.

testing results, the 700 series performed significantly better than the 600 series at preventing terminal venting due to an overloaded electrical current.

Fusite marketed the 700 and the 600 series terminals side-by-side. Its corporate affiliate, Emerson Climate, incorporated the older 600 series terminal into the new compressor that Johnson purchased and installed. Johnson could not know the difference: the groove on the terminal pin is concealed inside the terminal in both models. The only warning suggesting a risk from terminal venting was a pictorial of a directional explosion.

The day after Johnson installed the new compressor, Miller Food Mart called again to report continued air-conditioning problems. Johnson sent his assistant, Antonio Morris, to investigate. Morris reported back that electrical fuses had blown. Johnson joined Morris to replace the fuses and reset the breaker.

When Johnson turned the HVAC unit back on, he heard an unusual noise—“a rumbling”

that “didn’t sound threatening.” He did not know that the noise was consistent with electrical arcing occurring inside the new Emerson compressor or that the noise was a warning sign of imminent terminal venting.

Johnson traced the noise to the new compressor. He disconnected the power and knelt to open the terminal cover to take an electrical reading. At that point, two of the terminal’s three pins shot out, along with the compressor’s pressurized contents. The super-heated, pressurized fluids from inside the compressor ignited and covered Johnson. Johnson suffered second- and third- degree burns over sixty percent of his body. Morris was also splattered with the fluid and suffered small burns.

As Johnson’s expert put it, the compressor experienced “full electrical catastrophic failure.” Emerson’s corporate representative conceded that the most likely explanation for the accident was that a high electrical current had degraded the terminal connection between the pins and the insulation glass, causing the terminal to vent.

B

Johnson sued Emerson and Fusite, claiming that they defectively designed and marketed the terminal and compressor. Johnson relied on expert engineering testimony to show that safer alternative designs existed—namely, among others, Fusite’s 700 series terminal. The 700 series design, Johnson contended, would have prevented the terminal venting in this case. Emerson and Fusite witnesses conceded that they knew of the dangers of terminal venting. They further conceded that they produced the 700 series terminal for essentially the same cost as the 600 series terminal. And, unlike Emerson, one of its direct competitors expressly warns that loud sounds coming from its compressors are a sign of imminent terminal venting.

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Emerson Electric Co. D/B/A Fusite and Emerson Climate Technologies, Inc. v. Clarence Johnson, (Tex. 2021).

Emerson Electric Co. D/B/A Fusite and Emerson Climate Technologies, Inc. v. Clarence Johnson (Emerson Electric Co. D/B/A Fusite and Emerson Climate Technologies, Inc. v. Clarence Johnson) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

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