Ductless Mini-Split Proposal Template
Detailed proposal scope for zoning additions, finished basements, sunrooms, and whole-home ductless heat pump installations.
Complete Scope of Work
Copy or customize these verbatim specifications into your contractor proposal.
1. Indoor Head Placement & Mounting
Precision installation of indoor wall-mounted or ceiling-cassette air handlers.
- Mount indoor air handler brackets securely into wall studs with level pitch for gravity condensate drainage.
- Core 3-inch wall penetration with protective sleeve, pitched downward to prevent moisture intrusion.
- Hang and secure decorative wall units in designated primary living areas.
2. Outdoor Inverter Condenser & Refrigerant Lines
Outdoor unit placement, line hide channel, and flared piping.
- Mount multi-zone heat pump condenser on heavy-duty cantilever wall bracket or ground stand.
- Run insulated refrigerant lines, condensate drain tube, and communicating wiring through architectural Line-Hide conduit.
- Flare copper connections using eccentric cone flaring tool and torque wrench to manufacturer foot-pound specifications.
3. Electrical & Evacuation
Dedicated circuit wiring, deep vacuum, and pressure testing.
- Install new 240V dedicated branch circuit from main panel to outdoor disconnect switch.
- Pressurize line sets with dry nitrogen to 500 PSI for 24-hour pressure decay test.
- Triple evacuate system to under 300 microns and release factory refrigerant charge.
4. Commissioning & Remote Controls
Zone commissioning, Wi-Fi pairing, and warranties.
- Verify individual zone temperatures, fan speeds, and motorized louver positioning with handheld remote controls.
- 12-Year manufacturer compressor and parts warranty on premium registered ductless brands.
- 2-Year contractor workmanship warranty.
Standard Line-Item Material Allowances
Clear material specifications that protect against ambiguous scope arguments.
| Component / Assembly | Standard Specification | Unit / Allowance |
|---|---|---|
| Multi-Zone Outdoor Condenser | Hyper-Heating Inverter Heat Pump up to -13°F | 1 Unit |
| Indoor Wall Air Handlers | 9,000 to 18,000 BTU whisper-quiet heads | 1–4 Units |
| Slimduct Line-Hide Channel | UV-resistant paintable decorative exterior trunking | Per Run |
| Dedicated 240V Electrical Circuit | THHN in conduit from panel to outdoor disconnect | 1 Circuit |
| Wall Mount Brackets / Stand | Heavy-gauge powder-coated steel bracket with isolation pads | 1 Set |
Scope-Gap Protections: 3 Clauses to Include
These contractual gotchas account for 85% of change-order arguments on ductless mini-split proposal templates.
The Risk: Indoor heads mounted on interior walls cannot drain by gravity through exterior walls.
Protective Clause: Specifies silent electronic condensate removal mini-pumps inside line hide for interior heads.
The Risk: Homeowners or HOAs may object to exposed conduit on the front or visible sides of homes.
Protective Clause: Clearly marks approved routing pathways and specifies paintable UV-rated line-hide covers.
The Risk: Older 100A panels may lack 240V double-pole breaker spaces for the outdoor condenser.
Protective Clause: Notes that breaker space verification was completed or quotes subpanel installation separately.
Governing Building Codes & Standards
Frequently Asked Questions
Do mini-splits work in below-freezing northern winter climates?▾
Yes. Cold-climate hyper-heat mini-splits maintain 100% heating capacity down to 5°F and continue operating reliably down to -13°F without requiring backup electric heat strips.
Can each indoor head be controlled independently?▾
Yes. Each room head has its own thermostat sensor, motorized louvers, and remote control, allowing different temperatures across bedrooms, home offices, and living rooms.
Related HVAC Proposal Scopes
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