2026 Cost & Sizing Guide
Whole House Mini Split Systems: 2026 Costs, Zone Counts & Sizing
Can a mini split heat pump heat and cool an entire house?
Yes. A whole-house mini split connects two to six indoor units to one multi-zone outdoor unit, and larger homes can use two outdoor units. On our site, Cooper & Hunter Olivia systems start at $2,407.68 for 2 zones, $3,687.84 for 4 zones, $5,153.76 for 5 zones and around $6,582 for 6 zones. Bravo 2-zone and 3-zone systems start lower, at $1,258.41 and $1,709.42. These are equipment prices before the installation kit, labor and electrical work.
If you are researching a ductless heat pump for a whole house, the useful numbers are what each zone count costs, how much house each outdoor unit is listed to cover, what circuit it needs and how it behaves in winter. This guide uses the specifications on our own product listings, and it shows where you should confirm details with us or with a licensed installer before you order.
You buy the equipment from us, and a licensed HVAC contractor installs it. Send us your room list and we can help you match the outdoor unit, the indoor units and the installation kits.
What a Whole-House Mini Split System Costs (Equipment Only)
The table lists the lowest starting price we found for each zone count in our multi-zone collection. All prices are for 230V wall mount systems in their smallest indoor unit combination, with the installation kit not included. Browse the 2-zone, 3-zone, 4-zone, 5-zone and 6-zone pages for every combination.
| Zones | Outdoor Unit (BTU) | Cooper & Hunter Olivia From | Olivia Hyper From | Olivia SEER2 |
|---|---|---|---|---|
| 2 zones | 18,000 | $2,407.68 | Check collection | 25.1 |
| 3 zones | 18,000 (Hyper: 19,000) | $2,766.24 | $3,099.24 | 24 |
| 4 zones | 28,000 | $3,687.84 | $3,967.54 | 25 |
| 5 zones | 36,000 | $5,153.76 | $5,647.42 | 24 |
| 6 zones | 48,000 | $6,582.24 | Check collection | 22 |
Prices and ratings come from our product listings as of October 2026 and can change. Indoor units and efficiency vary by combination, so check the listing before you order.
Bravo offers lower-priced wall mount options in smaller sizes: 2-zone 18,000 BTU systems from $1,258.41 and 3-zone 24,000 BTU systems from $1,709.42. Bravo systems use R-32 refrigerant. See the Bravo collection for the full range.
Olmo Sierra 2-zone to 4-zone wall mount systems are also listed in our multi-zone collections. Some Olmo listings use R-410A, which is being phased down, so check the refrigerant and the current availability on each listing before you order. Browse the Olmo collection for what is available now.
What Changes the Final Price
- Installation kits are priced per zone. On the Olivia listings we reviewed, a 16 ft kit adds $181.44 per indoor unit, a 25 ft kit adds $227.52 and a 50 ft kit adds $470.88. On a 5-zone system that is $907.20, $1,137.60 or $2,354.40 on top of the base price.
- Indoor unit style. Concealed duct and cassette units cost more than wall mounts. The head types section below shows the difference on one 3-zone system.
- Series. Olivia Hyper models for cold climates start higher than standard Olivia.
- Labor, electrical work and permits. These are not included and vary by region and by home, so request quotes from licensed HVAC contractors near you.
Rebates
The federal Section 25C tax credit expired on December 31, 2025. State home energy rebate programs such as HEEHRA, where your state offers them for qualifying households, and utility rebates may still apply. Eligibility, amounts and equipment requirements vary, so check your state energy office or utility before you buy. Many programs ask for the AHRI certificate for your exact indoor and outdoor combination, so confirm it with us before ordering.
Ready to compare? Shop our multi-zone mini split systems, or call us at (855) 775-4822 and we can help you choose.
Connected Capacity: Why Whole-House Systems Need Margin
A multi-zone outdoor unit has one rated output, and the indoor units you connect can add up to more than that rating. This is normal, because rooms rarely call for peak output at the same moment. These are real combinations from our listings:
| Combination | Outdoor Unit Rated Cooling (BTU) | Indoor Units Total (BTU) | Connected vs. Rated |
|---|---|---|---|
| 5 zones, 6k x 5 | 36,000 | 30,000 | 83% |
| 6 zones, 9k x 6 | 48,000 | 54,000 | 112.5% |
| 5 zones, 9k x 5 | 36,000 | 45,000 | 125% |
| 4 zones, 9k x 4 | 28,000 | 36,000 | 129% |
The listings do not state a maximum connected capacity, so the exact limits come from the manufacturer's combination tables. We can help you check a combination before you order.
What it means in practice: 5 zones, 9k x 5 on a 36,000 BTU outdoor unit
- 1 to 4 rooms running: the outdoor unit can meet the full nameplate output of each head.
- All 5 rooms at full demand: the 36,000 BTU/h is shared across 45,000 BTU of heads, so each head delivers roughly 80% of its nameplate, about 7,200 of 9,000 BTU/h.
- In a cold snap: the outdoor unit's output is also lower than its rated figure, so the shortfall grows.
This is a simple proportional illustration. Real output depends on outdoor temperature and the manufacturer's combination data.
The design rule that follows is to size the outdoor unit for the whole-house load at your winter design temperature, then choose each head for its own room. Do not pick the outdoor unit by adding up head sizes. Square-footage rules of thumb, commonly 20 to 30 BTU per square foot depending on insulation and climate, are only a starting point. A Manual J load calculation from a licensed contractor is the standard method, and our free room-by-room HVAC load calculator gives you a per-room BTU estimate to start from.
How to Design a Whole-Home Mini Split System
A good whole-home layout puts the right indoor unit style in each room. A common approach is a concealed duct unit for an open living area and wall mounted units in the bedrooms, which keeps the main floor clean looking and gives each bedroom its own control. Our multi-zone listings are grouped by indoor unit style, so if you want a mix of styles on one outdoor unit, ask us to confirm the exact combination before you order.
An example of a hybrid whole home mini split layout: a concealed duct unit in the open living area and wall mounted units in the bedrooms.
How Much House One Outdoor Unit Covers
Our listings show approximate coverage of about 1,200 to 1,400 sq ft for the 4-zone 28,000 BTU system, about 1,400 to 1,800 sq ft for the 5-zone 36,000 BTU system and about 1,800 to 2,400 sq ft for the 6-zone 48,000 BTU system. The figures differ between sections of each listing, and climate, insulation and layout can move them in either direction, so treat them as a starting point. For larger homes, a second outdoor unit, for example one system per floor, keeps each system sized to its own floor and lets each floor run in its own mode.
Choosing Your Indoor Unit Types
This is how the styles compare on our 3-zone 18,000 BTU Olivia family with three 6k indoor units:
- Wall mounts: The lowest-cost style and the quickest to install, from $2,766.24 (SEER2 24). A good fit for bedrooms and most living spaces.
- Concealed duct units: Hidden in a ceiling or soffit and supplying air through discreet grilles, from $3,885.12 (SEER2 19). Check the unit's external static pressure rating against your duct design, because a restrictive or long duct run needs a unit rated for it. See our concealed ducted collection.
- One-way cassettes: Recessed into the ceiling for a low-profile look, from $5,683.05 (SEER2 25.1). They need a ceiling cavity to sit in.
- Other styles: Ceiling cassettes, mini floor consoles and floor/ceiling units are listed for special layouts. Ask us if your room does not suit a wall mount.
Electrical Needs and Installation
A multi-zone system needs one dedicated 230V circuit for its outdoor unit. The indoor units are fed through the system wiring. These are the outdoor unit values from our product listings:
| System | Outdoor MCA | Outdoor Max Fuse (MOCP) | Typical Breaker (from MCA/MOCP) |
|---|---|---|---|
| 3-zone Olivia 18,000 BTU | 16A | 20A | 20A double-pole |
| 4-zone Olivia 28,000 BTU | 23A | 25A | 25A double-pole |
| 5-zone Olivia 36,000 BTU | 30.5A | 35A | 35A double-pole |
| 5-zone Olivia Hyper 36,000 BTU | 37A | 40A | 40A double-pole |
| 6-zone Olivia 48,000 BTU | 34A or 40A (listing shows both) | 40A or 45A (listing shows both) | Confirm on the nameplate |
The listings do not state breaker sizes, so the last column is worked out from the MCA and max fuse values: the breaker must be at least the MCA and no larger than the max fuse, and the wire is sized to the MCA. The 6-zone listing shows two sets of values in different sections. Your electrician must confirm the sizing against the unit nameplate, your panel capacity and local code.
Line Sets and Installation
The listings show a maximum total pipe length of 196.8 ft on the 3-zone Olivia and 262.4 ft on the 4-, 5- and 6-zone models, up to 114.8 ft to any single indoor unit on the larger systems and a maximum height difference of 49.2 ft between the outdoor and indoor units. Plan your head locations and line set runs against these limits before you choose a kit length.
Current Cooper & Hunter multi-zone systems use R-454B and Bravo uses R-32, both A2L refrigerants. Some Olmo listings still list R-410A, so check the refrigerant on the listing. Installation and service must be done by a licensed HVAC technician, and warranty coverage depends on licensed installation. You can review the terms on our warranty policy page.
Cold-Climate Heating: What the Listings Say
If you are going full electric, the heating range matters as much as the price. These are the heating operating ranges shown on our multi-zone listings:
- Olivia (3- to 6-zone): heating operation from -13°F to 75°F outdoors.
- Olivia Hyper (3- to 5-zone): heating operation down to -22°F. Find these models in the 3-zone, 4-zone and 5-zone collections.
- Bravo and Olmo Sierra multi-zone: listed for heating down to -13°F.
The operating range is the lowest temperature at which the system runs. It is not the temperature at which the system still delivers its full rated output, because heating capacity falls as it gets colder. If your winter design temperature is near or below your model's limit, choose a Hyper model, and contact us for the manufacturer's capacity data at your temperature before you order.
How to Choose the Right Whole-House System
Getting the most from a whole-house system comes down to matching it to your home. Start with these four decisions:
- Size the outdoor unit to the whole-house load. Add up your room loads, check them against the load at your winter design temperature, and choose the outdoor unit first. Then choose each head for its own room.
- Group rooms by how you use them. All indoor units on one outdoor unit run in the same mode. Putting a floor, or a sunroom, on its own system lets each area heat or cool independently.
- Match the series to your climate. Olivia is listed for heating down to -13°F, and Olivia Hyper is listed down to -22°F for the coldest regions.
- Match the indoor units to your ceilings and ducts. Wall mounts suit most rooms. If you have well-sealed ductwork or a ceiling cavity, ask us about concealed duct or cassette options, and have your installer check the ducts first.
Not sure which combination fits your home? We can help you choose. Call (855) 775-4822 or use our contact page.
Build Your Whole-Home System: Load Calculator and Quote
Start with the load, then match the equipment. Take a few minutes to run a room-by-room load calculation with our free tool. It asks for your climate region, room size, ceiling height and optional factors such as insulation and sun exposure, and it returns a recommended capacity for each room. It is an estimate for general information, so a licensed contractor should confirm the final design.
Once you have your room list, send it to us. We can help you match the outdoor unit, the indoor units and the installation kits. Call (855) 775-4822 (Monday to Friday, 9 AM to 5 PM ET) or use our contact page.
Frequently Asked Questions
On our site, Cooper & Hunter Olivia multi-zone wall mount systems start at $2,407.68 for 2 zones (18,000 BTU), $2,766.24 for 3 zones, $3,687.84 for 4 zones, $5,153.76 for 5 zones and around $6,582 for 6 zones (48,000 BTU). Bravo 2-zone and 3-zone systems start at $1,258.41 and $1,709.42. These are equipment prices without an installation kit, which adds a per-zone charge, and without labor, electrical work or permits. Prices change, so check the listing for the current price.
The number of zones follows your rooms, not just your square footage. Our 6-zone 48,000 BTU Olivia listings show coverage of roughly 1,800 to 2,400 sq ft, so a 2,500 sq ft home sits at the top of what one outdoor unit is listed to cover. Some layouts work better as two systems, for example one per floor, which also lets each floor run in its own heating or cooling mode. Run each room through our load calculator, and we can help you match the equipment.
Yes. Our listings show a heating operating range down to -13°F for Olivia multi-zone systems and down to -22°F for Olivia Hyper models. Heating capacity drops as it gets colder, so if your winter design temperature is near or below those limits, choose a Hyper model and ask us for the manufacturer's capacity data at your temperature.
Sometimes. Concealed duct units and multi-position air handlers can supply air through ducts, but existing ducts must be sized, sealed and suited to the static pressure of the unit. Have a licensed installer evaluate the ducts, and check the external static pressure rating of the unit before you order. Wall mounted and cassette units avoid ductwork entirely.
Not on a single standard multi-zone system. All indoor units connected to one outdoor unit run in the same mode, heating or cooling, at a given time, although each room keeps its own temperature setpoint and can be turned off. If you want opposite modes in different areas, such as a sunroom and the bedrooms, plan separate outdoor units for them.
Each multi-zone system uses one 230V circuit for its outdoor unit. The listings show outdoor unit values from 16A MCA and 20A max fuse on the 3-zone Olivia to 30.5A MCA and 35A max fuse on the 5-zone Olivia. The breaker must be at least the MCA and no larger than the max fuse, and the wire is sized to the MCA. A licensed electrician must confirm the sizing against the nameplate, your panel capacity and local code.
*Disclaimer: A2L refrigerants like R-32 and R-454B require installation by licensed technicians; local codes may vary.*
