Brands · Mitsubishi Diamond Contractor · South Shore MA
Mitsubishi Electric Heat Pumps & Ductless
3R is a Mitsubishi Diamond Contractor — the highest tier of factory-trained Mitsubishi installers. Your system is designed, installed, and commissioned to Mitsubishi’s own standards, and qualifying installations are eligible for the extended 12-year parts and compressor warranty.
3R Plumbing & Mechanical is a Mitsubishi Electric Diamond Contractor — your installation qualifies for the extended 12-year parts and compressor warranty. Explore the full product lineup at mitsubishicomfort.com →
We handle the rebate paperwork and apply it as a discount at signing. Qualifying Mitsubishi heat pump installs are eligible for Mass Save incentives, 0% HEAT Loan financing, and federal tax credits — see current rebates for what applies in 2026.
Built for a South Shore January
Mitsubishi’s Hyper-Heating (H2i®) cold-climate technology delivers full rated heating capacity at 5°F and keeps producing heat well below zero. These are not the underpowered heat pumps of a decade ago — properly sized, a Mitsubishi system carries a home as primary heat, and the documented low-temperature ratings are why we design to your home’s actual load at design temperature instead of promising and hoping. More on how that works in our heat pump FAQ.
Recent Mitsubishi Installs by 3R
Real South Shore homes, installed by our own crews. Note the line-hide covering the refrigerant lines on the exterior runs — it costs a little more, and it is the difference between equipment that looks installed and equipment that looks added on.
12-year warranty
Diamond Contractor installation makes qualifying registered systems eligible for Mitsubishi’s extended 12-year parts and compressor warranty — double what a non-certified install gets.
Hyper-Heating H2i®
Full heating capacity at 5°F, useful heat well below zero. The cold-climate line is why Mitsubishi is our primary recommendation for whole-home conversions here.
Every indoor unit style
Wall units, ceiling cassettes, floor consoles, and concealed ducted air handlers — plus app control on every zone. See the full range on our ductless page.
What We Install
Single-zone and multi-zone ductless systems, concealed ducted air handlers for whole-home conversions, and hybrid setups that pair a Mitsubishi heat pump with your existing boiler as backup. Design is where these projects are won or lost, so every proposal starts with room-by-room load work — not a rule of thumb. Learn more about the equipment at mitsubishicomfort.com, then call us for real options and installed pricing at the visit.
Thinking about a heat pump?
Straight answers on sizing, cost, and rebates — with incentives applied up front.