Ductless Mini-Split Systems
Whether you want to heat and cool a single room, an addition, or your entire home, mini-splits deliver customizable comfort, energy savings, and whisper-quiet operation.
What We Offer
Energy Efficiency
Advanced heat pump technology with inverter-driven compressors that adjust output based on demand, reducing utility bills.
No Ductwork Required
Quick and easy installation without invasive construction. Perfect for older homes, basements, and additions.
Quiet Operation
Whisper-quiet sound levels with sleek, compact wall or ceiling-mounted designs.
Year-Round Performance
Operates efficiently in Maine winters with hyper-heating technology effective down to -13°F.
Superior Air Quality
Multi-stage filtration removes dust and allergens. No ductwork means easier maintenance.

Why Choose Knowles Mechanical
Serving Central & Southern Maine
Augusta, Waterville, Bangor, Lewiston, Portland, Bath, Brunswick, Windham, Auburn, and surrounding areas.
24/7 Emergency Service Available: (207) 445-4092 ext 2
Ready to Get Started?
Contact us today for a free estimate. Our team is standing by to help.
Additional Heating, Cooling & Plumbing Services
Mini-splits pair well with traditional heating systems. If you also have a furnace, Knowles Mechanical offers furnace installation and responsive furnace repair for backup heat during extreme cold. Our technicians also provide expert heat pump repair to keep your system running efficiently.
For central air systems, we deliver fast air conditioner repair so you never have to endure a hot Maine summer without cooling. Our technicians are trained across all major brands and system types.
We also provide comprehensive plumbing services and skilled fixture installation for bathrooms and kitchens. Business owners interested in renewable energy can explore our solar contracting division.
Browse all of our services, visit our homepage, or contact us to schedule a consultation. We're also hiring — view our careers page for current openings.