Two Approaches to Heat Pump Comfort
When shopping for a heat pump, you'll face a fundamental choice: a central ducted system or ductless mini-splits. Both use the same heat pump technology — a refrigerant cycle that moves heat rather than generating it — but they deliver conditioned air very differently. The right choice depends on your home's existing infrastructure, layout, and comfort goals.
Central Ducted Heat Pumps
How They Work
A central heat pump replaces your existing furnace and air conditioner with a single outdoor unit and indoor air handler. Conditioned air is distributed through your home's existing ductwork, just like a traditional HVAC system.
Best For
- Homes with existing, well-maintained ductwork
- Whole-home heating and cooling from a single system
- Homeowners who prefer a "set it and forget it" approach
- Larger homes where consistent temperature throughout is the priority
Pros
- Uses existing ducts — lower installation cost if ducts are in good shape
- One thermostat controls the whole house
- No indoor wall units visible
- Well-understood by most HVAC contractors
Cons
- Duct losses typically waste 15–25% of energy (even more if ducts are in unconditioned spaces)
- Less room-by-room temperature control
- Requires ductwork — expensive to add if your home doesn't have it
- Air handler and ducts need periodic cleaning and sealing
Ductless Mini-Split Heat Pumps
How They Work
Mini-splits connect an outdoor compressor to one or more indoor wall-mounted, ceiling cassette, or floor-mounted units. Each indoor unit conditions its own zone independently. Refrigerant lines run through small holes in the wall — no ductwork required.
Best For
- Homes without ductwork (older homes, radiant heat, etc.)
- Room additions, garages, attics, or bonus rooms
- Homeowners who want zone-by-zone temperature control
- Supplementing an existing system for problem rooms
Pros
- No duct losses — delivers 100% of conditioned air directly
- Individual zone control — heat or cool only occupied rooms
- Easier installation — no ductwork to install or modify
- Extremely quiet operation (modern units as low as 19 dB)
- Higher efficiency ratings (many models exceed 30 SEER2)
Cons
- Indoor wall units are visible (not everyone likes the aesthetics)
- Multi-zone systems can be expensive ($8,000–$15,000+ for 3–4 zones)
- Each zone needs its own indoor unit
- Fewer contractors experienced with installation (compared to central systems)
Cost Comparison
For a typical 2,000 sq ft home:
- Central ducted (with existing ducts): $10,000–$14,000
- Mini-split (3–4 zones): $10,000–$16,000
- Central ducted (new ductwork needed): $14,000–$22,000
When ductwork already exists and is in good condition, central systems are usually cheaper to install. When ducts don't exist or are in poor shape, mini-splits become the more cost-effective choice.
The Hybrid Approach
Many homeowners are choosing a hybrid strategy: a central heat pump for the main living areas (using existing ducts) plus one or two mini-split heads for problem zones like a master bedroom, home office, or bonus room. This combines the convenience of central air with the precision of ductless — and both systems qualify for federal tax credits.