MEMORANDUM
Defendants Johnson Controls, Inc. and The Trane Company move for summary judgment. Fed.R.Civ.P. 56. 1
This is an action for property damage that occurred on December 31, 1989 when the failure of a heating system manufactured by defendant The Trane Company caused sprinkler pipes to freeze and burst in the cold weather. Plaintiffs are the owners and an insurer of the premises at 1836 Callowhill Street, Philadelphia, and the owners of a neighboring apartment building. The particular mechanism responsible for the breakdown was an ignition control that had been manufactured by defendant Johnson Controls, Inc. The complaint sounds in strict liability and negligence for failure to warn and to test.
I.
Since 1966, Pennsylvania has recognized a cause of action in strict products liability under section 402A of the Restatement (Second) of Torts.
2
See Rogers v. Johnson & Johnson Products, Inc.,
U.
A.
Here, the initial dispute is whether plaintiffs have pointed to a specific defect or are relegated to a malfunction theory. This disagreement focuses on the affidavit of plaintiffs’ expert, Martin M. Van Adelsberg. According to plaintiffs, the affidavit specifically identifies a defect in the ignition control component of the heating unit.
4
Defendants’ initial position is that the affidavit is not worthy of consideration under Rule 56(e) because the affiant has not been qualified as an expert.
5
This argument must be rejected. A nonmoving party may use affidavits in opposition to a summary judgment motion. An expert’s affidavit, although not based on personal knowledge as is generally required under Rule 56(e), is eligible for summary judgment consideration if the affiant would be qualified to give the expert opinion at trial.
See Shaw v. Strackhouse,
Although Van Adelsberg’s report may lack specificity, it raises a triable issue as to the existence of a defect at the time the
B.
Defendant Johnson Controls maintains that plaintiffs should not be permitted to proceed on a malfunction theory because the product was operational for a “prolonged trouble-free” period.
See Woelfel v. Murphy Ford Co.,
We recognize that, as a general rule, “prolonged use of a manufactured article is but one factor, albeit an important one, in the determination of the factual issue whether [a defect in design or] manufacture proximately caused the harm” ... The age of an allegedly defective product must be considered in light of its expected useful life and the stress to which it has been subjected.
Kuisis v. Baldwin-Lima-Hamilton Corp.,
C.
Defendant Trane also asserts that it was merely an end-line assembler: Having not designed the ignition control, it should not be held hable for any defect in that component. A final assembler is not subject to
primary
liability unless, in the assembly process, it substantially changes the part so as to render it defective.
8
Burbage v. Boiler Engineering and Supply Co.,
III.
Plaintiffs’ claims against Trane for negligent failure to warn, under section 388 of the Restatement (Second) of Torts, cannot be sustained.
9
In
Walton v. AVCO Corp.,
The ignition control is similar to a light bulb — it works and then one day, it doesn’t work. There is no way to predict in advance when the control will fail. Plaintiffs’ response of September 17, 1992, at 5. Plaintiffs offered no evidence that Trane knew or should have known that the ignition control was defective.
A failure to warn claim against Johnson Controls is also unsupportable. In a strict products liability case, a duty to warn adheres where the manufacturer has “knowledge, or by the application of reasonable, developed human skill and foresight should have knowledge, of the presence of the ingredient and the danger.” Restatement (Second) of Torts, § 402A (1965), comment j.
See Baldino v. Catagna,
IV.
Plaintiffs’ negligent failure to test claim, to the extent that it is separate and distinct from failure to warn, should also be dismissed. Negligent failure to test is cogni
ORDER
AND NOW, this 28th day of April, 1993, summary judgment as to both defendants The Trane Company and Johnson Controls, Inc. is denied as to the strict products liability claims, and granted as to the negligence claims.
Notes
. Summary Judgment is appropriate if there is no genuine issue of material fact and the moving party is entitled to judgment as a matter of law. Fed.R.Civ.P. 56(c). The movant has the burden of showing that there is no triable issue. The opposing party must point to specific, affirmative evidence in the record — and not simply rely on allegations or denials in the pleadings — in order to defeat a properly supported motion.
Celotex Corp.
v.
Catrett,
. In a diversity action, a federal court applies the choice of law provisions-of the state in which it sits.
Klaxon Co. v. Stentor Elec. Mfg. Co.,
. The Restatement provides in part:
(1) One who sells any product in a defective condition unreasonably dangerous to the user or consumer or to his property is subject to liability for physical harm thereby caused to the ultimate user or consumer, or to his property, if
(a) the seller is engaged in the business of selling such a product, and
(b) it is expected to and does reach the user or consumer without substantial change in the condition in which it is sold ...
Restatement (Second) of Torts, § 402A (1965).
. Van Adelsberg’s report, incorporated by reference in his affidavit, states:
It is apparent that the STFR windings could not maintain their integrity and the insulation on some of the wires of the secondary (high voltage) windings overheated with the resultant damage to the wire insulation. As a result, electrical contact between the wires of the windings occurred thereby physically reducing the number of windings____ It is clear that the cause for this breakdown can be attributed to the circuit design which allowed overheating of the windings due to improper circuit design.
Plaintiffs' supplemental response of February 17, 1993, Exh. A, at 3. The report concludes:
In particular, it is my Professional Engineering opinion that the subject Johnson Ignition Controller (ICO) model G60 PAG-1, was defective in its electronic circuit design which allowed the Spark Transformer to overheat and malfunction. This overheating allowed the insulation of the windings to melt and make contact/electric short between the wires of the windings. As a result, the Turns Ratio of this STFR was drastically reduced and unable to produce the required high voltage at the high voltage (arc) terminal.
Id.
. In diversity cases, the admissibility of expert testimony is governed by the Federal Rules of Evidence.
See Salas v. Wang,
. Plaintiffs identified Van Adelsberg as their expert as early as September 1992. See, e.g., Plaintiffs’ response of September 17, 1992, Exh. A; Defendant Trane’s reply of September 21, 1992, at 2.
. Trane argues that the allegedly defective ignition control has not been shown to be the one installed by Trane in assembling the heating unit. This is not persuasive. It is undisputed that the serial numbers on the ignition control date back to 1983, the year the heating unit was sold. Defendants themselves argue that the heating unit functioned “trouble-free” since purchase, and there is no evidence suggesting that the ignition control was replaced prior to December 31, 1989.
. It is undisputed that the ignition control was a factory-sealed, solid state unit that Trane received from Johnson Controls and installed without modification in the heating unit. For this reason, Trane’s argument that it can not be primarily liable for a defect in the ignition control may have merit. However, that question is not decided here.
. Adopted in Pennsylvania,
see Dauphin Deposit Bank & Trust Co. v. Toyota Motor Corp.,
One who supplies directly or through a third person a chattel for another to use is subject to liability to those whom the supplier should expect to use the chattel with the consent of the other or to be endangered by its probably use, for physical harm caused by the use of the chattel in the manner for which and by a person for whose use it is supplied, if the supplier
(a) knows or has reason to know that the chattel is or is likely to be dangerous for the use for which it is supplied, and
(b) has no reason to believe that those for whose use the chattel is supplied will realize its dangerous condition, and
(c) fails to exercise reasonable care to inform them of its dangerous condition or of the facts which make it likely to be dangerous.
Restatement (Second) of Torts § 388 (1965).
. In light of this decision, it is unnecessary to reach the question whether the absence of warnings was the legal cause of the property damage.
. It is questionable whether plaintiffs have shown any duty on the part of Trane. Plaintiffs admit that because Trane received the ignition control from Johnson Controls as a factory-sealed component with instructions not to disassemble it, its design "prevented testing for component deterioration thereby making it impossible to predict failure of the unit/components.” See Plaintiffs’ answers to expert interrogatories, attached to Plaintiffs’ memorandum of September 17, 1992, Exh. A, at 2.
