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Commission continues 69 Montgomery mini‑split application, urges interior routing and color-matching
Summary
Owners of 69 Montgomery Street presented a proposal for a 4‑head ductless mini‑split and were asked to return with contractor-supplied technical details and options to reduce exterior visibility.
Owners of 69 Montgomery Street on Thursday presented a request for a ductless mini‑split heating and cooling system and were asked by the Historic District Landmark Preservation Commission to return next month with more technical details and options to reduce exterior visual impact.
Connor Naess, who identified himself as the home’s owner, described the proposal as “a ductless mini split, heating and cooling system for the main living areas of the house,” saying the installation would use “a 1, 1 multi head exterior condenser and 4 interior head units.” He said the current steam heat has leaking and cracked radiators and that a mini‑split would provide both heat and summer cooling and reduce use of window units.
Why it matters: Commissioners reviewed placement, vertical versus horizontal exterior runs, potential screening behind existing bushes, and color-matching of line covers to siding and trim. Several commissioners said the least-invasive option is to route as many refrigerant lines as possible inside the building or align exterior lines with existing horizontal features (for example, the window sill) to minimize visual disruption. Commissioners also suggested using slimmer line‑set covers or painted metal for longevity and asked the applicant to verify condenser dimensions; the applicant said the proposed condenser is a Mitsubishi multi‑head unit approximately 36 by 31 inches and about 13 inches deep.
Commission guidance and conditions for the applicant included: explore interior routing for vertical line runs where mechanically feasible; if exterior runs are required, place them at the sill or align them so horizontal runs are painted to match adjacent trim and siding; consider smaller-profile line covers (3‑inch slim options) or painted metal for durability; and ensure condenser placement is screened by existing shrubbery where possible. The commission agreed to continue the application so the contractor can confirm whether interior routing is feasible and supply product dimensions and photos. Staff requested the applicant supplement the application with contractor input before the next meeting.
