01
Room Loads, Measured Not Guessed
Sun exposure, insulation, ceiling height and window glass set each room's load. LiDAR scanning and load calculations size every zone individually.
Residential Mini Split Installation | Greater Boston
Mini Split & Ductless System Installation in Greater Boston
Room-by-room heating and cooling, designed for the house instead of forced onto it.
617 HVAC designs and installs ductless mini split systems across 30 Greater Boston communities, from single-zone condo installs to whole-home multi-zone conversions. Our installers hold factory certifications with Mitsubishi and Daikin and every project starts with zone planning instead of a unit count. Placement, line-set routing, electrical and Mass Save paperwork all live inside one written quote. A single-zone install typically wraps in one day.
Zones Before Units
Zone Planning Comes First.
A mini split installation succeeds or disappoints at the planning stage. The right question is not how many heads fit the budget, but which rooms carry the heating and cooling load. Our assessment maps the zones and sizes each head to its room.
02
Placement That Ages Well
Indoor heads need wall space, airflow reach and a condensate path. Outdoor units need snow clearance and distance from bedroom windows. Line-set routes stay within manufacturer limits.
03
Electrical And Panel Reality
Every outdoor unit needs a circuit and disconnect. The electrical scope is confirmed during assessment and priced inside the written quote.
Unit Types
Four Ductless Unit Types, Matched To Four Kinds Of Rooms.
Most quotes default to a wall-mounted head. The room decides better than the default does.
Wall-Mounted Heads
The most common installation, mounted high on an interior or exterior wall, visible but discreet and the most affordable option. Works well for bedrooms, living rooms and finished basements.
Floor-Mounted Units
Mounted low on a wall like a radiator. Good for rooms with slanted ceilings, low knee walls or window layouts that leave no wall space up high-attic conversions, dormered bedrooms and older homes with unusual geometry.
Ceiling Cassettes
Recessed into the ceiling with a slim grille flush with the surface. It provides even four-way airflow and the most discreet visual footprint-the right choice when the interior design has to stay clean or wall-mounted airflow will not reach every corner.
Concealed Duct Units
Hidden in a ceiling or closet, these units feed two or three rooms through short duct runs when ductless efficiency is wanted without visible equipment.
The Install
Zones Get Planned. Heads Get Mounted. Systems Start Commissioned.
Six steps carry every ductless installation from the zone assessment to documented commissioning.
01
Zone Assessment
LiDAR measurement of the room or rooms, review of electrical capacity and a preliminary discussion of unit types.
02
Equipment Match
Single-zone vs. multi-zone comparison, unit-type recommendations by room, tonnage sized to the Manual J load and the exact price for each path.
03
One Firm Quote
Equipment, mounting, line sets, electrical, permits and rebate math appear in one document.
04
Green Light
You approve the zone plan and the calendar locks.
05
Mounting Day
Heads mount, line sets run and get flared to torque specification, vacuum gets pulled and verified and the circuit lands.
06
Commission And File
Every zone runs through heating and cooling while readings are recorded. We file Mass Save paperwork and walk you through the controls.
Complete Transparency
Typical Project Shapes
One Zone
Single head and outdoor unit, one install day, the classic condo and addition setup.
Multi-Zone
Several heads on one or two outdoor units, covering bedrooms and the main living space.
Full Ductless
Every room zoned, the primary heat source retired and the biggest rebate tier in play.
The zone plan names your project shape and the quote prices it to the last bracket.
Mass Save, Ductless Edition
Mini Split Rebates Follow The Zone Count.
Ductless mini splits are heat pumps in Mass Save's eyes, which puts real money on the table. Whole-home systems that retire the primary heat source earn the top tier and partial installations qualify at reduced levels.
01
Whole-Home Tier
Retiring the primary heating system with ductless zones earns $2,650 per ton, capped at $8,500. The $500 sizing bonus stacks on top.
02
Partial-Home Tier
Adding zones while keeping the furnace or boiler still qualifies at lower per-ton amounts. A single-room installation earns less and still earns.
03
HPIN Requirement
Rebates clear through Mass Save Heat Pump Installer Network contractors and 617 HVAC holds that status.
The rebate math sits inside your quote from the first draft and we file it after commissioning.
Frequently Asked Questions
How much does mini split installation cost in Massachusetts?
Boston market pricing runs roughly $3,000 to $6,500 for a straightforward single zone and multi-zone projects commonly land in five figures. Zone count, line-set lengths, electrical scope and unit types move the number. Our quote prices your plan.
Do I need a permit to install a mini split in Massachusetts?
Yes. Refrigerant work takes a mechanical permit and the new circuit takes an electrical permit, including a single-head installation. We include both in the written scope.
Can you install a mini split system I bought online?
We prefer supplying the equipment because warranty registration, refrigerant matching, parts accountability and one company owning the result depend on it. Bring us the model you researched and we can price it inside a complete installation.
Are DIY mini split kits like MrCool worth it?
Pre-charged kits can work for simple layouts, but shorter warranties, no Mass Save rebate without a licensed installer and fixed line lengths are real tradeoffs. Boston framing and winters punish shortcuts.
Do ductless mini splits heat well in Boston winters?
Cold-climate models hold capacity well below zero. Undersized heads struggle in open plans and closed bedroom doors can starve hallway-mounted heads, which is why zone planning matters.
How many zones can one outdoor unit run?
Multi-zone outdoor units commonly feed two to five indoor heads, with larger equipment available for up to eight. The zone plan balances outdoor space, cost and redundancy.
Do mini splits increase home value in Boston?
Buyers often read permitted ductless zones as solved cooling and heating problems, especially in condos and triple-deckers. Appraisal impact varies, but documented installations carry more value than mystery work.
What maintenance does a new mini split need?
Clean filters monthly in heavy seasons, wash coils and treat drains yearly and keep professional readings on record. Documented maintenance also protects warranty terms.
Service Area
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The Difference Between Ductless Done Right And Done Over Is Decided On Installation Day.
Get the zone plan and firm quote first. One assessment maps your zones, prices the whole project and locks the rebate math in writing. Single-zone installs finish in a day.
1167 Massachusetts Avenue, Arlington, MA 02476(617) 835-8058
Licensed & Insured · Mitsubishi & Daikin Factory Certified · Mass Save® HPIN Contractor · Serving 30 Greater Boston communitiesServing 30 Greater Boston communities