Heating, Cooling & Plumbing Done Right
Knowles Mechanical designs, installs and services the systems that keep Maine homes and businesses comfortable — oil, propane and gas heating, heat pumps, air conditioning, plumbing and commercial mechanical work.
- Licensed & insured
- 24/7 emergency service
- Free estimates
KNOWLES MECHANICAL, INC.
Where craftsmanship meets dependable service.
For two decades our technicians have installed, maintained and repaired mechanical systems across Central and Southern Maine — from family homes that need a furnace replaced before the first hard freeze to commercial buildings running boilers, rooftop units and complex piping. We combine factory-trained technicians, code-compliant workmanship and straight answers about what your system needs.
OurCoreServices
One licensed team for every mechanical system in your building — installed to code, serviced on schedule and backed by written estimates before any work begins.
Heating Systems: Oil, propane and gas furnace installation and repair, boiler service, and cold-climate heat pump solutions sized for Maine winters.
Cooling & Air Conditioning: Central air, ductless mini-splits and commercial cooling — installed, tuned and repaired so summer never catches you off guard.
Plumbing: Leak detection, water heaters, fixture installation and repiping for kitchens, bathrooms and mechanical rooms — clean work, done once.
Commercial Mechanical: Design-build mechanical systems, rooftop units, boilers and controls for offices, retail, schools and new construction.
Solar Contracting: Commercial rooftop arrays, ground-mount systems and battery storage — engineered, permitted and installed by our own crews.
Maintenance Agreements: Seasonal tune-ups, priority scheduling and documented inspections that protect efficiency and extend equipment life.
Mechanical systems for buildings that can't afford downtime.
Our commercial division works with property managers, general contractors and facility teams on projects from a single rooftop replacement to complete mechanical packages for new construction. We coordinate schedule, inspections and commissioning — and we stay available long after the punch list is signed off.
- Design-build mechanical — heating, cooling, ventilation and plumbing scoped as one system.
- Boilers, rooftop units and hydronics installed, retrofitted and serviced.
- Preventive maintenance agreements with priority response and documented service history.
- Code-compliant workmanship permitted and inspected across nine Maine counties.
TheKnowlesDifference
Family owned, locally staffed and accountable for the work we sign. Here's what homeowners and facility managers say they notice first.
Two Decades of Experience: Since 2005 our technicians have worked on nearly every heating, cooling and plumbing configuration found in New England buildings.
Licensed & Fully Insured: Every technician is licensed, insured and trained on current equipment, refrigerant handling and Maine code requirements.
24/7 Emergency Response: No heat at midnight in January? Call the main line and you are connected directly with our on-call technician.
Upfront, Written Pricing: Detailed estimates before any work begins, with options explained clearly — no surprise line items on the invoice.
Local Maine Expertise: We know what a coastal downeast winter or an inland cold snap does to equipment, and we size and insulate for it.
Family Owned & Operated: A local company with local crews — the person who quotes your job is accountable for how it is finished.
What OurCustomersSay
Real feedback from homeowners and facility managers across Central and Southern Maine.
“I am very happy with the installation of my new furnace and oil tank. They were fast, professional and answered every question I had. I highly recommend them.”
“Outstanding service. Everyone listened carefully to what I wanted, explained the pros and cons, and communicated with each other and our other vendors. The bill matched the estimate.”
“The team arrived on time, worked efficiently and kept me informed the whole way through. Clean install, clear communication, and they came back to check on everything.”
Ready for year-round comfort?
Tell us what your building is doing — or not doing — and we'll walk you through the options. Free written estimates for replacements, new installations and commercial projects, plus maintenance plans that keep small issues from becoming emergency calls.