Skip to content
Call Us Today! (860) 535-2552
Call (860) 535-2552
Duncklee Cooling & Heating Logo
  • Home
  • About
    • Our Late Founder

    • Meet The President
    • Our Team
    • Recent Projects
    • Service Areas
    about-menu
    • Payment
    • Service Agreements
    • Environment
    • Refer a Friend
    • Factors to Consider When Selecting a Dealer
    • Inflation Reduction Act
    • Electric Utility Rebate
    about-menu
    • Testimonials
    • Google Reviews
    about-menu
    • Awards
    • Press Release
    • Blog
    • Community Involvement
    • Corporate Photos
    • 45th Anniversary
    • 50th Anniversary
    about-menu
    • Membership & Sponsor
    • Donation Request
    about-menu
    • Careers
    about-menu
    • About Duncklee
      • Our Late Founder
      • Meet The President
      • Our Team
      • Recent Projects
      • Service Areas
    • Customer Resources
      • Payment
      • Service Agreements
      • Environment
      • Refer A Friend
      • Factors To Consider When Selecting A Dealer
      • Inflation Reduction Act
      • Electric Utility Rebate
    • Reviews
    • News
    • Membership & Sponsor
    • Careers
  • Cooling
    • American Standard

    • York®

    • Cost of Central Air Conditioning?

    york
    • Mitsubishi Ductless Mini Split Air Conditioner
    • Mitsubishi Warranty
    • Mitsubishi Ductless Mini Split Heat Pump & Air Conditioning Cost
    • What Is A Mitsubishi Diamond Contractor?
    cooling split aircon
    • American Standard Heat Pumps
    • YORK® Heat Pumps
    • Mitsubishi Ductless Mini Split Air Conditioner & Heat Pump
    cooling heatpumps
    • American Standard – Commercial Air Conditioning
    • York – Commercial Air Conditioning
    • Mitsubishi Ductless Mini Split Air Conditioner
    commercial cooling
    • Service Repair – Cooling
    service repairs
    • Financing Options
    • Electric Utility Rebate
    • Central Air Conditioning
      • American Standard
      • York®
      • Cost of Central Air Conditioning?
    • Mitsubishi Ductless Mini Split Air Conditioner
      • Mitsubishi Ductless Mini Split Air Conditioner
      • Mitsubishi Warranty
      • Mitsubishi Ductless Mini Split Heat Pump & Air Conditioning Cost
      • What Is A Mitsubishi Diamond Contractor?
    • Heat Pumps
      • American Standard Heat Pumps
      • York® Heat Pumps
      • Mitsubishi Ductless Mini Split Air Conditioner & Heat Pump
    • Financing
      • Financing Options
    • Commercial Cooling
      • American Standard – Commercial Air Conditioning
      • York – Commercial Air Conditioning
      • Mitsubishi Ductless Mini Split Air Conditioner
    • Service Repairs
      • Service
  • Heating
    • American Standard – Heating & Furnaces
    • YORK® – Gas Furnaces
    • Heating – Oil Furnaces
    furnaces
    • Heating – Gas Boilers
    • Heating – Oil Boilers
    • Rinnai I-Series Plus Combi Boiler
    tanklessboilers
    • Tankless Water Heaters
    • Rinnai SENSEI® RX Series Tankless Water Heaters
    water-heater
    • Heating & Air – Gas Logs
    • YORK®– Heat Pumps
    • American Standard – Heat Pumps
    heat pump - heating
    • Mitsubishi Ductless Mini Split Heat Pump
    • Mitsubishi Warranty
    • Mitsubishi Ductless Mini Split Heat Pump & Air Conditioning Cost
    • What Is A Mitsubishi Diamond Contractor?
    cooling split aircon
    • American Standard – Commercial Heating
    • York – Commercial Heating
    • Mitsubishi Ductless Mini Split Heat Pump
    commercial heating
    • Service Repairs – Heating
    service repairs
    • Financing Options
    • Electric Utility Rebate
    • Furnaces
      • American Standard – Heating & Furnaces
      • YORK® – Gas Furnaces
      • Heating – Oil Furnaces
    • Tankless Boilers
      • Heating – Gas Boiler
      • Heating – Oil Boilers
    • Tankless Water Heaters
      • Tankless Water Heaters
    • Gas Logs
      • Heating & Air – Gas Logs
    • Heat Pumps
      • YORK® – Heat Pumps
      • American Standard – Heat Pumps
    • Mitsubishi Ductless Mini Split Heat Pump
      • Mitsubishi Ductless Mini Split Heat Pump
      • Mitsubishi Warranty
      • Mitsubishi Ductless Heat Pump & Air Conditioning Cost
      • What Is A Mitsubishi Diamond Contractor?
    • Commercial Heating
      • American Standard – Commercial Heating
      • York – Commercial Heating
      • Mitsubishi Ductless Mini Split Heat Pump
    • Service Repairs
      • Service Repairs – Heating
    • Financing — Rebates & Incentive
      • Financing Options
      • Rebates & Incentives
  • Indoor Air Quality
    • Humidifiers Heating & Cooling
    indoor-air-quality
    • Ductless
    • Ducted
    indoor-air-quality
    • American Standard
    • Honeywell
    indoor-air-quality
    • Reme Halo
    indoor-air-quality
    • Indoor Air Quality
    indoor-air-quality
    • Programmable Thermostats
    indoor-air-quality
    • Treatment System
    indoor-air-quality
    • Humidifiers
      • Humidifiers Heating & Cooling
    • Integrated Zoning Systems
      • Ductless
      • Ducted
    • Air Cleaners
      • Honeywell
      • American Standard
    • Air Purifiers
      • Reme Halo
    • Service Repair
      • Indoor Air Quality
    • Thermostats
      • Programmable Thermostats
    • UV Treatment System
      • Treatment System
  • Contact us
  • HOME
  • ABOUT
    • ABOUT DUNCKLEE
      • OUR LATE FOUNDER
      • MEET THE PRESIDENT
      • OUR TEAM
      • RECENT PROJECTS
    • CUSTOMER RESOURCES
      • PAYMENT
      • SERVICE AGREEMENTS
      • ENVIRONMENT
      • REFER A FRIEND
      • FACTORS TO CONSIDER WHEN SELECTING A DEALER
      • Inflation Reduction Act
      • Electric Utility Rebate
    • REVIEWS
      • TESTIMONIALS
      • GOOGLE REVIEWS
    • NEWS
      • AWARDS
      • PRESS RELEASE
      • BLOG
      • COMMUNITY INVOLVEMENT
      • CORPORATE PHOTOS
      • 45 YEARS ANNIVERSARY
    • MEMBERSHIP & SPONSOR
      • MEMBERSHIP & SPONSOR
      • DONATION REQUEST
  • COOLING
    • Central Air Conditioning
      • American Standard
      • York
      • Cost Of Central Air Conditioning ?
    • Mitsubishi Ductless Mini Split Air Conditioner
      • Mitsubishi Ductless Mini Split Air Conditioner
      • Mitsubishi Warranty
      • Mitsubishi Ductless Mini Split Heat Pump & Air Conditioning Cost
      • What Is A Mitsubishi Diamond Contractor?
    • Heat Pumps
      • American Standard Heat Pumps
      • York Heat Pumps
    • Commercial Cooling
      • American Standard – Commercial Air Conditioning
      • York – Commercial Air Conditioning
      • Mitsubishi Ductless Mini Split Air Conditioner
    • Service Repairs
      • Service Repair – Cooling
    • FINANCING & REBATES
      • FINANCING OPTIONS
      • Electric Utility Rebate
  • HEATING
    • Furnaces
      • American Standard – Heating & Furnaces
      • York – Gas Furnaces
      • Heating – Oil Furnaces
    • Tankless Boilers
      • Heating – Gas Boilers
      • Heating – Oil Boilers
      • Rinnai I-Series Plus Combi Boiler
    • Tankless Water Heaters
      • Tankless Water Heaters
      • Rinnai SENSEI® RX Series Tankless Water Heaters
    • Gas Logs
      • Heating & Air – Gas Logs
    • Heat Pumps
      • York – Heat Pumps
      • American Standard – Heat Pumps
    • Mitsubishi Ductless Mini Split Heat Pump
      • Mitsubishi Ductless Mini Split Heat Pump
      • Mitsubishi Warranty
      • Mitsubishi Ductless Mini Split Heat Pump & Air Conditioning Cost
      • What Is A Mitsubishi Diamond Contractor?
    • Commercial Heating
      • American Standard – Commercial Heating
      • York – Commercial Heating
      • Mitsubishi Ductless Mini Split Heat Pump
    • Service Repairs
      • Service Repairs – Heating
    • FINANCING & REBATES
      • FINANCING OPTIONS
      • Electric Utility Rebate
  • INDOOR AIR QUALITY
    • HUMIDIFIERS
      • Humidifiers Heating & Cooling
    • INTEGRATED ZONING SYSTEMS
      • DUCTLESS
      • DUCTED
    • AIR CLEANERS
      • AMERICAN STANDARD
      • HONEYWELL
    • AIR PURIFIERS
      • REME HALO
    • SERVICE REPAIR
      • INDOOR AIR QUALITY
    • THERMOSTATS
      • PROGRAMMABLE THERMOSTATS
    • UV TREATMENT SYSTEM
      • TREATMENT SYSTEM
  • CONTACT US
SCHEDULE A SERVICE
GET AN ESTIMATE
CONTACT US NOW
GET FINANCED
SCHEDULE A SERVICE
GET AN ESTIMATE
CONTACT US NOW
GET FINANCED
  • Duncklee Cooling & Heating award winner graphic.

Duncklee Cooling & Heating named 2020 Small Business of the year by the Eastern CT Chamber of Commerce

Eastern CT – The Chamber of Commerce of Eastern CT [...]

By dunckleech|2026-03-31T13:20:04-04:00December 14th, 2020|Press|
Read More
  • An award badge for the 6th Annual Readers' Choice Awards "Best of the Best 2020" from The Day and theday.com, recognizing Duncklee Cooling & Heating as a top service provider in Southeastern Connecticut.

Duncklee Wins Readers Choice Best of 2020

Duncklee Cooling 7 Heating was recently awarded the 6th Annual [...]

By dunckleech|2026-03-31T13:44:12-04:00October 20th, 2020|Press|
Read More
  • A professional headshot of Jonathan Duncklee, President of Duncklee Inc. Heating and Cooling, featured in an article discussing his company's history, ductless technology, and commitment to serving HVAC customers in Connecticut.

Jonathan Duncklee Talks about Serving HVAC Customers, Community

Source: Arch News May 8, 2020 Duncklee discusses offering [...]

By dunckleech|2026-03-31T13:46:35-04:00June 29th, 2020|Press|
Read More
  • HVAC professionals reviewing strategies and equipment to stay competitive in the market

HVAC Contractors Prepare for New Competition

Source: Newsbreak 6/25/2020 The HVAC market likely faces changes [...]

By dunckleech|2026-03-31T13:58:24-04:00June 29th, 2020|Press|
Read More
  • Jonathan Duncklee President of Duncklee Cooling and Heating holding Top Performer award plaque with two Connecticut Green Bank representatives at CT Green Bank headquarters Rocky Hill Connecticut

Duncklee Cooling & Heating, Inc. receives Top Performer award from the CT Green Bank for the second year in a row. 2018 & 2019

Source – The News, March 22, 2019 Out of [...]

By dunckleech|2026-04-01T10:59:46-04:00May 5th, 2020|Press|
Read More
  • Jonathan Duncklee and fellow honorees Tom Kazprzak Alison Keating Suzanne Colon Jenny Kitsen Lori Dufficy and Bob Reed posing at BSA 24th Annual Outstanding Leadership Award Dinner at Spa at Norwich Inn Connecticut 2019

24th Annual Boy Scouts of America Outstanding Leadership Award Dinner

Source: Norwich Bulletin: May 7, 2019 at 9:50 pm [...]

By dunckleech|2026-04-01T10:53:52-04:00May 4th, 2020|Press|
Read More
  • VAC technician repairing an outdoor AC unit.

Duncklee Honored

TheDay.com February 23, 2003 Stonington – Les and Jonathan [...]

By dunckleech|2026-03-31T14:09:16-04:00May 2nd, 2020|Press|
Read More
  • Residential home serviced by Duncklee Cooling and Heating.

Duncklee Honored

TheDay.com February 22, 2004 Les and Jonathan Duncklee of [...]

By dunckleech|2026-03-31T14:10:33-04:00May 2nd, 2020|Press|
Read More
  • The Resident - Duncklee Inc 28th Anniversary July 2001 Largest Mitsubishi Dealer New England

The Resident

July 3, 2001 Jonathan Duncklee, Vice President of Duncklee, [...]

By dunckleech|2026-04-01T06:58:59-04:00May 2nd, 2020|Press|
Read More
  • Trane outdoor HVAC condenser unit representing Duncklee Inc 35 years of excellent heating and cooling service in Stonington Connecticut

Stonington Company Honored for 35 years of business excellence

Stonington, CT – First selectman Ed Haberek, Jr. recently [...]

By dunckleech|2026-04-01T07:09:49-04:00May 2nd, 2020|Press|
Read More
12Next

Duncklee Cooling & Heating celebrating over 50 years since 1973

logo

296 Taugwonk Rd 
Stonington, CT 06378

(860)535-2552

CTLic# S1-405511
CT Lic# SM1-3770
RI Lic# 8307

STAY CONNECTED

QUICK LINKS

Home
Areas We Service
Blog
Press Release
Financing Options
Electric Utility Rebate
Contact Us
Privacy

 

Duncklee Inc. celebrating over 50years

SERVICES

Cooling
Heating
Indoor Air Quality

WORKING HOURS

Monday – Friday: 8:00 am to 4:30 pm
Saturday – Sunday: Closed

Call Mystic CT
(860) 536 – 2552
Call Stonington CT
(860) 535 – 2552
Call New London CT
(860) 447 – 8484
Call Norwich CT
(860) 886 – 5000
Call Old Saybrook CT
(860) 388 – 5001
Call Westerly RI
(401) 596 – 6655
Website Design by Stratedia | © Copyright | All Rights Reserved | Duncklee Cooling & Heating | HVAC Company Near Me | HVAC Repair Near Me
Accessibility Adjustments

Powered by OneTap

Accessibility Commitment for Duncklee Cooling & Heating

At Duncklee Cooling & Heating, we are committed to making our digital presence as accessible and inclusive as reasonably possible for all users, including individuals with disabilities. Our goal is to improve the usability of dunckleeinc.com and to support a more accessible experience for everyone, regardless of their abilities or the technologies they use.

Our Approach to Accessibility

We aim to align with the Web Content Accessibility Guidelines (WCAG), which define internationally recognized standards for digital accessibility. While full compliance cannot always be guaranteed, we strive to implement improvements where feasible and regularly review accessibility-related aspects of our website. Accessibility is an ongoing process, and we are committed to improving the experience over time as technologies, standards, and user needs evolve.

Accessibility Features

To support accessibility, dunckleeinc.com may utilize tools such as the OneTap accessibility toolbar. This interface provides users with a range of helpful features, including:
  • Adjustable text size and contrast settings
  • Highlighting of links and text for better visibility
  • Full keyboard navigation of the toolbar interface
  • Quick launch via keyboard shortcut: Alt + . (Windows) or ⌘ + . (Mac)
Please note the following:
  • The availability and effectiveness of these features depend on the website's configuration and ongoing maintenance.
  • While we strive to ensure accessibility, we cannot guarantee that every part of dunckleeinc.com will be fully accessible at all times. Some content may be provided by third parties or affected by technical constraints beyond our immediate control.

Feedback and Contact

We welcome your feedback. If you experience any accessibility barriers or have suggestions for improvement, please contact us: Email: jduncklee@dunckleeinc.com We are committed to reviewing all inquiries and aim to respond within 3–5 business days. If you require assistance accessing any part of this website, we are happy to provide support through alternative channels upon request. Last updated: December 9, 2025
How long do you want to hide the toolbar?
Hide Toolbar Duration
Select your accessibility profile
Vision Impaired Mode
Enhances website's visuals
Seizure Safe Profile
Clear flashes & reduces color
ADHD Friendly Mode
Focused browsing, distraction-free
Blindness Mode
Reduces distractions, improves focus
Epilepsy Safe Mode
Dims colors and stops blinking
Content Modules
Font Size

Default

Line Height

Default

Color Modules
Orientation Modules
Google Rating
4.7
Based on 256 reviews
CALL NOW