Mount Desert Island · Hancock County, Maine
Warm, efficient, clean air for island homes.
We install cold-climate heat pumps, service heating and cooling systems, and add RGF REME HALO purification so the air you heat is also the air you want to breathe.
- Free estimates
- Local and owner-operated
- Emergency service every day
- Help with Efficiency Maine rebates
Viruses. Wildfire smoke.
Are you protected?
Reduce smoke, odors, pollen, mold, bacteria and viruses in the air you breathe at home and at work.
- Whole-home & building air purification
- Germicidal UV lights
- Air ionization
- Advanced filtration
- Custom solutions to fit your needs
What customers say
5.0 on Google
Real words from a customer who has hired us for several projects.
“On Target Air has completed several projects for us and the workmanship, timeliness and reasonable prices are more than enough to have them back for all our work. When you include Trevor’s professionalism, honest assessments and friendly manner, his company simply can’t be beat! Highly highly recommend giving them a chance. You will not be disappointed.”
What we do
Comfort and air quality, handled by one local crew
Most companies treat heating and indoor air as separate jobs. We plan them together, so your system keeps the house warm in January and keeps the air fresh when the windows stay shut.
Heat pump installation
Ductless mini-splits and ducted cold-climate systems, sized for a Downeast winter, with help on Efficiency Maine rebates.
Heat pumps → Indoor air qualityREME HALO air purification
RGF whole-home purification that works inside your ductwork against odors, smoke, pollen, mold spores, bacteria and viruses.
Air purification → ServiceHeating & cooling
Furnace, boiler and air conditioning service, repair and replacement, plus ventilation for tight, well-insulated homes.
Heating & cooling → Seasonal & rentalsSeasonal home care
Opening, closing and closed-season checks for summer homes and vacation rentals, with photo reports for owners who are away.
Seasonal homes →*Efficiency Maine rebate amounts and eligibility rules change. Figure shown is the standard whole-home rebate as published in 2026; we confirm current rules before you buy.
Who we serve
Find the right fit for your property
Year-round homes
Heat pumps, heating and cooling, and cleaner air for the whole house.
Heat pumps →Summer & seasonal homes
Opening, closing and closed-season checks with photo reports.
Seasonal care →Hotels, inns & restaurants
Fresher guest rooms and dining rooms, PTAC purifiers and cleaner ice.
Hospitality →Offices, shops & restaurants
Purification and filtration built into your building's system.
Commercial →Greenhouses & growers
Element Air systems against airborne mold, bacteria and odor.
Greenhouses →Recent installs
Heat pumps we have put in
Why pair them
A tight Maine house holds onto heat, and onto everything in the air
Insulated, closed-up homes are cheaper to heat. They also trap cooking odors, wood smoke, pet dander and the musty smell of a cottage that sat empty all winter. Adding purification when you upgrade your heating costs less than doing it later, because we are already in the ductwork.
Our systems are designed to reduce
- Viruses and bacteria
- Mold spores
- Pollen and dust
- Smoke and odors
- VOCs from paints, cleaners and furniture
How a job runs
From first call to a warm house
Call or request
Tell us about the house, how you heat it now and what bothers you most.
Home visit
We look at the rooms, insulation and existing equipment and work out the heating load.
Clear quote
A written quote with equipment, options and any rebates you may qualify for.
Install and walkthrough
Clean installation, then we show you how to run the system for best comfort and savings.
Service area
Where we work
Based in Mount Desert, serving the whole island and nearby Hancock County.
- Mount Desert
- Northeast Harbor
- Seal Harbor
- Somesville
- Otter Creek
- Bar Harbor
- Southwest Harbor
- Tremont
- Bass Harbor
- Trenton
- Lamoine
- Ellsworth
- Hancock
- Surry
- Blue Hill
Questions
Common questions
Do you work on Mount Desert Island in winter?
Yes. We are based in Mount Desert and work across the island and Hancock County year-round. Office hours are Monday through Friday, 8am to 4:30pm, and emergency service is available 23½ hours a day, every day.
Can I add air purification to a heat pump install?
Yes. If your heat pump is ducted, a REME HALO unit can go into the ductwork during the same visit. For ductless homes we will talk through the RGF options that fit.
Are there rebates for heat pumps in Maine?
Efficiency Maine offers heat pump rebates, including $3,000 per rebate-eligible outdoor unit for qualifying whole-home installs. Rules change, so call us and we will check what applies to your home.
Ready for warmer, cleaner air?
Call or send a request. Office hours are Monday through Friday, 8am to 4:30pm. Emergency service is available 23½ hours a day, every day.