Bosch Ductless Mini-Splits for Chicago-Area Homes
Pure Comfort installs Bosch ductless mini-splits that heat down to -22°F, a flexible option for additions, finished basements, garages and rooms the ductwork never reached. See our mini-split installation page for pricing and how the install works.
Pure Comfort Heating and Cooling is also a Lennox Premier Dealer for ducted heating and cooling systems.
456 Google Reviews
Your Peace of Mind
Flexible Options
We're Here Anytime
Guaranteed
Thinking About a Mini-Split?
Free in-home replacement estimates from a Lennox Premier Dealer.
- Single-zone systems start at around $4,500 installed
- Bosch ductless heat pumps that heat down to -22 F
- ComEd instant discounts applied where you qualify
- Financing available, including 0% APR on select Lennox systems during Lennox promotions
Mini-Split Not Working?
Fast, honest ductless mini-split repair from a family-owned Streamwood team.
- $75 diagnostic ($99 evenings, weekends & holidays)
- 24/7 emergency service, with same-day appointments available
- Trucks stocked with common mini-split parts, so most repairs are done in one visit
- Upfront, flat-rate pricing before any work starts
Quick Summary
Pure Comfort installs Bosch ductless mini-splits that heat down to -22 F, a flexible option for additions, finished basements, garages and rooms the ductwork never reached. A single-zone system starts at around $4,500 installed. We serve Streamwood and the Northwest and West Suburbs.
Reviewed by Gene Baldassano, owner and NATE- and EPA 608-certified HVAC technician since 2008 · Updated
How a Ductless Mini-Split Works
A mini-split uses an outdoor unit connected by refrigerant and electrical lines to one or more indoor units. Each indoor unit conditions the space it serves without relying on a central network of supply and return ducts.
Many residential mini-splits operate as heat pumps, moving heat outside for cooling and reversing the process for heating. Their flexibility is useful, but proper capacity, placement and cold-weather planning still matter.
Common Mini-Split Configurations
- Single-Zone SystemsOne outdoor unit serves one indoor unit. This is often considered for a specific room, addition, garage conversion or isolated comfort problem.
- Multi-Zone SystemsOne outdoor unit connects to multiple indoor units, allowing several spaces to have individual temperature control. Capacity must be distributed correctly across the connected zones.
- Indoor Unit StylesWall-mounted units are common, while ceiling, floor and compact-duct options may suit different layouts. Availability and compatibility depend on the system selected.
Bosch Climate 5000 Max Performance Ductless
For ductless mini-splits we install the Bosch Climate 5000 Max Performance line. It keeps heating all the way down to -22°F, so it's real year-round comfort for Illinois, not just a summer AC. Here's how we use it.
Single-Zone
One outdoor unit and one indoor unit. Perfect for the room your ductwork never reached.
- Additions, sunrooms and garages
- Finished basements and attic rooms
- Its own thermostat for that space
Multi-Zone
One outdoor unit runs several indoor units, each with its own temperature setting.
- Older homes with no ductwork
- Upstairs bedrooms that run hot
- Separate control in every room
Cold-Climate Heating
The Max Performance models are built for northern winters, so they can be a primary heat source for the rooms they serve.
- Heats down to -22°F outdoors
- Inverter compressor for steady, quiet comfort
- R-454B refrigerant
Bosch Max Performance at a glance
| Feature | What it means for you | Details |
|---|---|---|
| Bosch Climate 5000 Max Performance | ||
| Cold-climate heating | Keeps heating down to -22°F, so the room stays warm on the coldest days. | Bosch.com ↗ |
| Inverter compressor | Speeds up and slows down instead of cycling on and off. Quieter and more efficient. | Bosch.com ↗ |
| Single or multi-zone | Heat and cool one room or several, each with its own setting. | Bosch.com ↗ |
| No ductwork needed | Only a small hole through the wall for the line set. Fast, clean install. | Bosch.com ↗ |
| R-454B refrigerant | Built for the new lower-impact refrigerant required on new systems. | Bosch.com ↗ |
We size each system with a room-by-room load calculation and handle the full install, including line set, electrical and permit if required.
Where Mini-Splits Can Work Well
Ductless systems may fit homes without existing ductwork, additions that are difficult to connect to the central system, finished basements, bonus rooms, sunrooms or spaces with schedules different from the rest of the house.
They can also support room-by-room control. However, a mini-split should not be used to cover up an unresolved insulation, load or building-envelope problem without understanding the cause.
Features to Compare
Placement Matters as Much as Capacity
Choosing the Right Mini-Split Design
Capacity should be based on the load of each space rather than room size alone. Windows, insulation, sun exposure, ceiling height, occupancy and how the room is used all affect performance.
For multi-zone systems, the outdoor unit and connected indoor units must be matched carefully. Pure Comfort also considers where lines can run, where condensate can drain and how the equipment will look and remain serviceable.
Installation Details That Affect Performance
The outdoor unit needs a stable location with suitable clearances and drainage. Indoor units should distribute air effectively without creating drafts or being blocked by furniture. Refrigerant lines, electrical wiring and condensate piping must be installed and protected correctly.
Pure Comfort pressure-tests connections, uses proper evacuation procedures and verifies operation after startup. Each zone should be tested through its available modes and controls.
Why Choose Pure Comfort for Ductless Guidance
Evaluates the actual load and use of each space
Plans indoor-unit placement, line routing and drainage
Uses documented refrigeration and commissioning procedures
Offers practical options instead of assuming ductless is right for every problem
Related Services
Frequently Asked Questions
Can a mini-split heat and cool the same space?
Many residential mini-splits are heat pumps that provide both cooling and heating. Performance at lower outdoor temperatures and any backup-heat needs should be reviewed for the application.
What is the difference between single-zone and multi-zone mini-splits?
A single-zone system connects one outdoor unit to one indoor unit. A multi-zone system connects multiple indoor units to one outdoor unit so several spaces can be controlled separately.
Do mini-splits require ductwork?
Most indoor-unit styles do not require traditional ductwork. Compact-duct configurations are also available for applications where a small concealed duct system makes sense.
Where should the indoor unit be installed?
Placement should support good air distribution, condensate drainage, service access and a practical line route to the outdoor unit. The best location varies with the room layout.
Rebates you may qualify for
2026 utility programs for Northern Illinois homes. Amounts checked October 2026.
| Program | Equipment | Rebate |
|---|---|---|
| ComEd | Ductless mini-split (17+ SEER2, 9+ HSPF2) | Up to $500 / $1,000** |
| ComEd | ENERGY STAR smart thermostat with a heat pump | +$75 |
** Under / over 1.5 tons heating capacity. The federal 25C tax credit ended for systems installed after December 31, 2025. Illinois income-qualified HEAR heat pump rebates (up to $8,000) are not available yet as of October 2026, and projects finished before the program opens will not qualify. We confirm the current status on your written quote. ComEd discounts come off your invoice when a ComEd heat pump-trained contractor installs qualifying equipment. Nicor Gas rebates require qualifying equipment and Nicor’s rebate application. Programs can change, so we confirm what your home qualifies for on your written quote. Programs and amounts can change, so confirm current details on the utility sites before you buy. Official details: Nicor Gas rebates · ComEd heat pump discounts.
Licensed, certified and accredited
- Lennox Premier Dealer
- NATE-certified technicians
- EPA Section 608 certified
- BBB Accredited Business
- Licensed business in the Village of Streamwood
- Registered Illinois LLC
- Fully insured