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How many zones do you actually need? Single-zone starts at $3,500, multi-zone at $8,000. Clean Heat RI covers 60% of either. The right choice depends on your RI home type — colonial, Victorian, triple-decker, cape, or ranch.
$3.5-$7K
Single Zone
$8-$18K
Multi-Zone
60% off
Clean Heat RI
100% off
Income Eligible
1 Zone
Single room or open plan
Under 800 sq ft, apartment, cottage, one-room addition
2-3 Zones
Medium home, cape, ranch
800-1,500 sq ft, main floor + bedroom(s)
4-5 Zones
Large colonial, Victorian
1,500-3,000+ sq ft, multiple rooms per floor
Both are ductless mini splits with the same heat pump technology. The difference is how many indoor heads share one outdoor condenser.
| Feature | Single Zone | Multi-Zone (2-5 heads) |
|---|---|---|
| Cost range (installed) | $3,500-$7,000 | $8,000-$18,000 |
| Outdoor condensers needed | 1 per zone | 1 total (serves 2-5 heads) |
| Indoor heads | 1 | 2-5 |
| Coverage | 1 room / 300-700 sq ft | Whole home / 800-2,500 sq ft |
| Efficiency per zone | Higher (dedicated compressor) | Slightly lower (shared compressor) |
| SEER2 rating | 20-23 | 18-22 |
| Independent operation | Yes (fully independent) | Each head is independent from others |
| If one unit fails... | Only that room affected | All zones may be affected |
| Outdoor space needed | More (multiple units) | Less (one unit) |
| Installation time | 0.5-1 day per zone | 1-3 days total |
| Clean Heat RI eligible | Yes (60% / 100%) | Yes (60% / 100%) |
| Expandable later | Add zones independently | Must plan upfront |
All prices include installation. Clean Heat RI covers 60% standard, 100% income-eligible. RI Energy utility rebate ($400-$1,250/ton) stacks on top.
9,000-18,000 BTU | 300-700 sq ft
Best for: Studio, apartment, one room, addition
18,000-24,000 BTU | 600-1,200 sq ft
Best for: Cape, small ranch, main floor + bedroom
24,000-36,000 BTU | 1,000-1,800 sq ft
Best for: Medium colonial, large cape, ranch
36,000-60,000 BTU | 1,500-3,000+ sq ft
Best for: Large colonial, Victorian, whole-home
Add $400/ton (replacing oil/gas) or $1,250/ton (replacing electric resistance) from RI Energy on top of Clean Heat RI. A 3-ton multi-zone system replacing oil heating: Clean Heat RI ($8,400) + RI Energy ($1,200) = $9,600 in total rebates on a $14,000 system. Your cost: $4,400. Income-eligible: as low as $0.
Rhode Island has distinctive housing stock dating from the 1700s to today. Here is the ideal mini split setup for each type.
800-1,000 per unit sq ft | 1-2 per unit zone(s)
3-story, 3-unit. Each floor ~800-1,000 sq ft. Built 1870-1930. No ductwork. Radiator or baseboard heat.
Recommended: Single-zone per unit (or 2-zone for larger units)
Living room head (primary zone) + optional bedroom head. Each unit independent.
Landlords: each unit files separately for Clean Heat RI. Tenants control their own system.
Before rebates
$3,500-$9,000 per unit
After Clean Heat RI
$1,400-$3,600 per unit
1,800-2,400 sq ft | 3-4 zone(s)
2-story, center chimney, 4-5 rooms per floor. No ductwork. Plaster walls.
Recommended: Multi-zone (3-4 heads, 1 outdoor unit)
First floor: living room + kitchen. Second floor: primary bedroom + secondary bedroom or hallway.
Multi-zone is best — saves outdoor space vs 3-4 separate condensers. Preserve plaster walls (small 3" line holes only).
Before rebates
$10,000-$16,000
After Clean Heat RI
$4,000-$6,400
2,000-3,500 sq ft | 4-5 zone(s)
High ceilings (9-12 ft), ornate trim, many rooms, complex floor plans. No ductwork.
Recommended: Multi-zone (4-5 heads, 1 large outdoor unit)
Main rooms get dedicated heads. Smaller rooms conditioned through open doors or short-duct cassettes.
High ceilings need higher BTU per room. Floor-mounted or ceiling cassette heads may work better for aesthetics in period rooms.
Before rebates
$14,000-$18,000
After Clean Heat RI
$5,600-$7,200
1,000-1,500 sq ft | 2-3 zone(s)
1-1.5 story, compact layout. Some have partial ductwork. 3-4 rooms.
Recommended: Multi-zone (2-3 heads) or 2 single-zone units
Main floor: open area head. Upper half-story: bedroom head(s). Simple layout, efficient zoning.
Compact homes heat efficiently. 2-zone often sufficient. If partial ducts exist, consider one ducted head downstairs + one ductless head upstairs.
Before rebates
$6,500-$12,000
After Clean Heat RI
$2,600-$4,800
1,200-1,800 sq ft | 1-2 zone(s)
Single story, open floor plan. May have existing ductwork. 1,200-1,800 sq ft.
Recommended: Single-zone (if open plan) or 2-zone
One powerful head in the central living area can condition most of the home. Add a bedroom head for nighttime comfort.
Ranches are the most efficient homes for mini splits. Open layout = fewer zones needed. Consider ducted heat pump if existing ductwork is in good shape.
Before rebates
$3,500-$10,000
After Clean Heat RI
$1,400-$4,000
700-1,200 sq ft | 1-2 zone(s)
Small to medium, seasonal or year-round. 700-1,200 sq ft. Open floor plan.
Recommended: Single-zone (most) or 2-zone
Main living area head. Add bedroom head if converting from seasonal to year-round use.
Salt-air resistant outdoor units essential (Mitsubishi Blue Fin, Fujitsu coated coils). Size up 10-15% for wind exposure.
Before rebates
$3,500-$9,000
After Clean Heat RI
$1,400-$3,600
Cold-climate rated, salt-air resistant, and Clean Heat RI qualified.
Hyper-Heat MSZ-FH / MXZ
Halcyon XLTH / XLTH Multi
RED Series / Multi V S
The same process whether you choose single-zone or multi-zone.
Schedule a free Home Energy Assessment through RI Energy. The assessor evaluates insulation, air sealing, and heating system. Required before Clean Heat RI approval. Takes 2-3 hours.
Address any weatherization recommendations from the assessment. Clean Heat RI requires documentation that weatherization was either completed or appropriately scoped. RI Energy offers 75% weatherization rebates.
Get 2-3 quotes from Clean Heat RI approved installers. They will assess your home, recommend zone configuration, and provide a total project cost. The installer handles the Clean Heat RI paperwork.
The 60% rebate (or 100% income-eligible) is applied directly to your invoice — no waiting for reimbursement. You pay only your portion at installation. ARPA funding deadline: December 31, 2026.
ARPA Funding Deadline
Clean Heat RI is funded by ARPA (American Rescue Plan Act). All funds must be spent by December 31, 2026. Once funds are exhausted or the deadline passes, this program ends. At current pace, funding may be depleted before the deadline. Start your application early.
It depends on your home size and layout. A small home or apartment (under 800 sq ft) typically needs 1 zone. A medium home (800-1,500 sq ft) needs 2-3 zones. A large colonial or Victorian (1,500-2,500 sq ft) needs 3-5 zones. RI triple-deckers typically need 1-2 zones per unit. Each zone is an independently-controlled indoor head serving one room or open area.
For 2 zones, two single-zone systems cost about the same as one multi-zone ($7,000-$14,000). For 3+ zones, a multi-zone system is usually cheaper because you need only one outdoor condenser instead of multiple. However, single-zone systems are more efficient per zone (each has its own optimized compressor) and easier to repair (one unit going down does not affect others). For RI homes, multi-zone is more common for 3+ zone installations due to limited outdoor space.
Yes. Clean Heat RI covers both single-zone and multi-zone systems at the same rate: 60% of total cost up to $11,500 for standard households, 100% up to $18,000 for income-eligible (at or below 150% SMI). The equipment must be ENERGY STAR 6.1 Cold Climate certified regardless of number of zones. RI Energy utility rebates ($400-$1,250/ton) also stack on top.
Yes — this is a common RI approach called "phased installation." Start with a single-zone unit in the room you use most (living room, bedroom, or home office). Add more zones later as budget allows. Each additional zone costs $3,500-$7,000 installed. You would file a separate Clean Heat RI application for each phase. The downside: multiple single-zone units mean multiple outdoor condensers taking up yard space.
A typical RI colonial (2-story, 1,800-2,400 sq ft, no ductwork) works best with a 3-4 zone multi-zone system: one head in the living room, one in the kitchen/dining area, and one in each upstairs bedroom or a shared upstairs hallway head. The outdoor condenser goes on the side of the house. Total cost: $10,000-$16,000 before rebates. After Clean Heat RI (60%): $4,000-$6,400.
Providence triple-deckers (3-story, 3-unit buildings) are ideal for ductless mini splits. Each unit typically gets a single-zone or 2-zone system. For a renter-occupied building, the landlord installs one system per unit, and each tenant controls their own temperature. Clean Heat RI applies per residential address, so each unit can claim its own rebate. Cost per unit: $3,500-$9,000 before rebates.
Indoor heads on multi-zone systems operate at 19-25 dB — quieter than a whisper. The outdoor condenser is louder (45-55 dB) but comparable to a normal conversation. Multi-zone outdoor units are slightly louder than single-zone because they serve multiple heads. For RI homes in close-lot neighborhoods, position the outdoor unit away from neighbor windows. Mitsubishi and Fujitsu are the quietest brands.
Mini splits work in most rooms but are less practical for very small spaces (under 100 sq ft like bathrooms or closets). In RI homes with many small rooms (typical of Victorians and colonials), a common approach is to put heads in the primary rooms and let conditioned air flow through open doors. A single 18,000 BTU head can effectively condition 500-700 sq ft of connected open space.
Clean Heat RI covers 60-100% of your cost whether you choose single or multi-zone. ARPA funding deadline: December 31, 2026.