Opinion by
*384 Thе parties appear here in the same order as in the district court, and will be referred to as plaintiff and defendants. The matter is here on an agreed statement under R.C.P. Colo. 112(e). The only question presentеd is whether plaintiff is entitled to interest upon moneys payable to it by the defendants.
The parties entered into a contract dated November 29, 1961, under which plaintiff performed plumbing, heating, ventilating and process work on the defendants’ premises. The amount payable under the contract was $83,260.59, of which the plaintiff wаs paid $74,108.55. The work was completed in April 1964 and, on April 14, 1964, plaintiff filed a lien for the balance of $9,152.04.
Prior to Aрril 14, 1964, plaintiff breached its warranty with respect to some pumps and by reason thereof the defendants thought they were entitled to a setoff of $3,242.80, thereby reducing the unpaid balance to $5,909.24. On June 26, 1964, the defendants sent a check to plaintiff in the amount of $5,909.24. There was language on the back of the check which would have acknowledged payment in full and released the mechanic’s lien had the plaintiff endorsed it. The plaintiff, however, refused to accept the check.
The trial court properly found that the offer оf the check was not an effectual tender. “The amount offered by the debtor to his creditor must be at least equal to the whole amount then due or accrued on the debt or obligation to constitute an еffectual tender, and an offer of a part of the amount due does not avail as a tender.”
The triаl court found that the correct amount of the setoff was $1,741.05, and as to this there is no issue here. The trial cоurt further ruled that plaintiff’s entire claim was unliquidated until the moment of judgment and that the plaintiff was not entitled to interеst prior to judgment. This was error.
“The right to interest, independent of an agreement to pay it, is statutory.”
Weaver v. Bank,
138
*385
Colo. 83,
“Creditors shall be allowed to receive interest, when there is no agreement as to the rate thereof, at thе rate of six per cent per annum, for all moneys after they become due, on any bill, bond, promissory note or other instrument of writing, * * * on money due on account from the date when the same became due * *
Thе amount of $9,152.04 payable to plaintiff under the contract was a liquidated amount and fell within the definitions contained in the statute.
Buerger Co. v. Salzer
Co.,
The claim for damages for breach of warranty by plaintiff in the amount of $1,741.05 was unliquidated аnd did not fall within the types of debts enumerated by the statute. Defendants are not entitled to interest on such sum.
Hendrie v. Commissioners,
Defendants argue that the unliquidated character of the claim for damages for breach of warranty makes the plaintiff’s claim undetermined and unliquidated until final judgment. We do not agree. In
F. & C. C. R. Co. v. Tennant,
*386
Plaintiff has urged that under the authority of
Larrick, Inc. v. Burt Chevrolet,
In thе instant case the defendants have not argued the matter of the amount of interest, but simply have-taken thе position that the judgment of the trial court should be affirmed. However, we think the point justifies perusal and a ruling on our part.
Henrylyn Co. v. Meneray Co., supra,
indicated that interest should run against the difference between the liquidated claim and the small unliquidаted claim. While the authorities are not uniform, we think the better rule permits the offset of an unliquidated claim against a liquidated claim before the computation of interest, at least in situations in which the two claims arise out of the same general transaction. “Where a claim under an agreement is certain and liquidаted, but is reduced because of the allowance of an unliquidated off-set or counterclaim, interest may be allowed only on the balance due.”
Deerhurst Estates v. Meadow Homes, Inc.,
The judgment of the trial court is reversed insofar as it relates to interest and the cause is remanded for the entry of judgment as of April 7, 1967, for interest at the rate of 6% per annum on the sum of $7,410.99 from April 14, 1964.
