This is a bill in equity filed on May 22, 1958, by the lessee (Burt) of space on the fifth floor of a building in Springfield (a) to enjoin the defendant (Seven Grand) from collecting rents under the lease, (b) to have the lease “rescinded and declared a nullity,” and (c) to obtain damages for the failure of Seven Grand to perform the terms of *126 the lease. The case was referred to a master who proceeded ex parte when the defendant failed to appear at the hearings.
The following facts were found by the master or established by the pleadings. On July 1, 1955, Burt executed a lease 1 of the space for five years ending June 30, 1960, at a rent of $4,500 per year. Subsequent to the execution of the lease, Seven Grand became assignee of the lessor’s interest in the lease. Beginning on October 18, 1957, monthly payments of rent were made by Burt to Seven Grand. Thereafter, beginning in November, 1957, Seven Grand failed to furnish (a) electric power and current without giving to Burt the three months’ notice called for by art. 27 of the lease, (b) sufficient heat, and (c) elevator service. “[Sj]uch failure was not due to unavoidable causes which would excuse it.” As a consequence, Burt was obliged to provide otherwise for current and elevator service, and Burt’s printing machines sustained $250 damage from cold. Burt had to operate certain diesel engines at a cost of $300, and to provide current by other means at a cost of $1,000. Burt also lost printing profits of $400 because of necessary suspension of operations and sustained damage of $85 from loss of elevator service. Burt’s total damage was $2,035, a little less than six months’ rent.
The master refused to reopen the hearings to hear objections and testimony in behalf of Seven Grand. A motion to *127 recommit the report was denied and the report was confirmed. A final decree (a) provided “that the lease . . . be . . . rescinded as of . . . May 22, 1958,” the day when the bill was filed, and (b) ordered payment by Seven Grand to Burt of $2,035 with costs. Seven Grand appealed.
1. Where tenants lease space on an upper floor of an urban building, as here, to conduct business enterprises, it is unrealistic to say that furnishing light, heat (in our climate), power, and elevator service does not go to the essence of what the landlord is to provide, to substantially the same extent as the term for years in the space itself. Failure to furnish such services, at least if serious in extent and not excusable, deprives the lessee of a vital part of what the landlord knows the lessee must have in order to carry on his business. Such a failure constitutes a breach of the covenant of quiet enjoyment (see
H. W. Robinson Carpet Co.
v.
Fletcher,
The terms of this lease will be construed, so far as the language permits, to produce an equitable agreement between the parties. See
New England Foundation Co. Inc.
v.
Commonwealth,
2. In seeking what it refers to as rescission and that the lease be “declared a nullity” Burt asked little more (see Corbin, Contracts, § 1223, p. 921) than declaratory relief as to its rights. Its prayer, however, that the lease be rescinded, even if it has not abandoned the premises, can reasonably be construed as an election, if its contentions in fact should be sustained, to abandon because of a constructive eviction.
At law the .tenant’s abandonment of the leased premises must take place within a reasonable time (see
Rome
v.
Johnson,
The present record does not reveal whether abandonment of the premises has taken place and, if it has, when that occurred. The bill may imply that Burt’s possession of the premises continued at least through the date of the bill. In view of the absence of findings about abandonment, the decree of unconditional rescission must be modified, after appropriate findings as to abandonment, to declare either (a) that Burt has been constructively evicted, if abandonment has in fact taken place, or (b) that Burt is entitled to abandon the premises within a reasonable time and to treat Seven Grand’s conduct as a constructive eviction.
3. No issue of future damage (cf.
Gromelski
v.
Bruno,
The provisions of the lease are established by the pleadings. Upon the lease and the master’s subsidiary findings, the trial judge could reasonably conclude (a) that the rent
*131
reflected the benefit of what Seven Grand received from Burt during the period of Seven Grand’s defaults and also the fair value of what Burt should have received if Seven Grand had performed its obligations fully, and (b) that the value of what Burt in fact received was less than the rent by at least the amount which Burt was obliged to expend for services not furnished by Seven Grand, viz. the aggregate amount ($1,300) spent by Burt for use of diesel engines to produce electric current and for current from other sources. Nothing in the record suggests that incurring these expenses was unreasonable. See A.
W. Banister Co.
v.
P. J. W. Moodie Lumber Corp.
The master could reasonably conclude that the damage to Burt’s machinery from cold, the loss of profits during suspension of operations, and the damage resulting from Seven Grand’s failure to operate the elevator, reduced the value of what Burt in fact received from Seven Grand. See
Parker
v.
Levin,
Because of the absence of findings about the date of abandonment one further uncertainty must be mentioned. If Burt did not abandon the premises within a reasonable time after the date of the bill, when Burt indicated its election to treat Seven Grand’s defaults as a constructive eviction, Seven Grand is entitled to a further credit of the fair value, if any, of Burt’s occupation of the premises after the date of the bill. If Burt paid any rent after the date of the bill, Burt is entitled to a further recovery of the amount by which that rent exceeded the fair value of its use and occupation during the period after May 22, 1958. Burt must give Seven Grand full credit for the benefits, if any, received . by Burt after the date of the bill, for relief of this character should "be granted [only] upon such equitable conditions as . . . [will] amply protect the rights of the defendant.” See
Bellefeuille
v.
Medeiros,
4. The interlocutory decree confirming the master’s report is affirmed. Solely to permit resolution of the uncertainty *132 caused by absence of findings on the issue of abandonment, the final decree is reversed and the case is remanded to the Superior Court for further proceedings consistent with this opinion.
So ordered.
Notes
Relevant portions of the lease read: “25th. This lease and the obligation of Tenant to . . . perform all of the . . . covenants and agreements hereunder . . . shall in nowise be . . . excused because Landlord is unable to supply or is delayed in supplying any service ... to be supplied . . . if Landlord is prevented or delayed from so doing . . . for any reason not within the control of the Landlord. 26th. ... In respect to the various ‘services’ . . . to be furnished by the Landlord ... it is agreed that there shall be no . . . abatement of the rent ... for interruption ... of such ‘service’ when such interruption . . . shall be due to accident, alterations or repairs desirable ... to be made or to . . . some other cause, not gross negligence on the part of the Landlord. No such interruption ... of any such ‘service’ shall he deemed a constructive eviction . . . [emphasis supplied]. 27th. Landlord may furnish electric current for light and power . . . but no claim shall be made against the Landlord on account of the failure to supply electric current if such failure shall be due to unavoidable causes. Landlord may cease supplying such electric current on three months notice to Tenant. . . . _29th. The Landlord shall furnish heat at all reasonable hours during the heating season .... 32nd. In conjunction with other tenants . . . freight elevator service shall be furnished by Landlord” (at hours specified which need not be listed).
We need not decide whether any other interpretation of the provision would make it so unconscionable as to require disregarding it as against public policy. See analogy of
Quality Fin. Co.
v.
Hurley,
