Quality Service at Affordable Prices

We're not comfortable until you are.

About Us

J.P. Dunn Heating and Cooling LLC offers over 20 years of experience. Our goal is to provide honest, professional high quality level of service. We are here to solve all your heating and air conditioning problems, big or small. We can design the perfect heating and/or cooling system for any residential or light commercial building. We cover most of Connecticut .


J.P. Dunn Heating & Cooling can install or service innovative heating and cooling systems for your home. From our high-efficiency air conditioners, furnaces, efficient wall hung on-demand boilers and heat pumps to our industry-leading warranties; you know you're getting top quality heating, cooling and air conditioning services. Our mission is to ensure the comfort of you and your family.

Light Commercial

From small retail locations and offices to larger buildings, JP Dunn Heating & Cooling provides full-service HVAC maintenance and installation services. We supply only the top quality brands and sizes of equipment, so we can assess your needs and give you recommendations on the best equipment for your situation, not what will be easiest for us.


Our friendly and respectful technicians will treat your home or office with the highest level of care. As a family-owned and operated HVAC business, we maintain the highest ethical standards. Our full-service HVAC company will get the job done right the first time. Whether you are in need of residential or light commercial HVAC services, you can count on our team of highly trained technicians.

Fully Qualified

J.P. Dunn Heating and Cooling LLC is fully qualifed, licensed, approved and offers full warranties.

Fully Licensed:

  • Fully Licensed & Insured
  • License # HTG. 0388506 - S1
  • License # SHM. 005747 - SM1

Rated & Approved

Financing & Warranties

  • Financing available through Energize CT Apply online now
  • Financing is also available through Synchrony Bank
  • We honor Manufacturers' Warranties and offer a 1-year Labor/Parts Installation Warranty

Employment Opportunities

Now Hiring:

J.P. Dunn is looking for HVAC Installers / Technicians for a family owned & operated Business. We offer top pay, bonuses & benefits.


  • 5 Years experience in HVAC
  • State of CT B,D, or S license
  • Familiarity with HVAC wiring diagrams
  • Ability to handle physical workload
  • Strong problem solving and critical thinking skills
  • Need be a team player
  • Need clean Connecticut driving record
  • Drug Free

Special Financing Options through Synchrony Bank & Energize CT

J.P. Dunn Heating and Cooling LLC now works with Synchrony Bank as well as Energize CT for financing your home improvement Heating or Cooling project.

We offer the following finance options with approved credit application:

  • 0% APR for 18 months
  • 5.99% APR for 37 months
  • 7.99% APR for 61 months
  • 9.99% APR for 132 months

The Energize Connecticut initiative helps you save energy in your Connecticut home or business.

  • Financing available through Energize CT Apply online now
  • State rebates available with purchase of Energy Star rated units.


J.P. Dunn Heating and Cooling LLC is a full service HVAC contractor and maintenance company that can offer complete design and installation repair and maintenance for your heating and cooling systems. We are your Connecticut HVAC contractor of choice for residential gas heating service or oil heating service covering Litchfield County, Torrington and the Northwest corner of Connecticut. We offer complete light commercial and residential HVAC design, installation, repair, and maintenance services, as well as 24-hour emergency service - 860-283-1167.

Maintenance and Service

J.P. Dunn Heating and Cooling provides all-inclusive HVAC maintenance and repair services, including furnace or boiler repairs, continuing maintenance or emergency services for both residential and light commercial clients. When it comes to fast and affordable heating services, you can trust J.P. Dunn. Our team of experienced, certified technicians can help you keep your critical heating and air conditioning systems in peak operating condition.

We can service most Heating and Cooling products including:

  • Boilers
  • Furnaces
  • Ductless Splits
  • Heat Pumps
  • Hot Water Tanks
  • Oil Tanks
  • Wall Hung On-Demand Boilers
  • Custom Duct Work
  • Radiant Systems
  • Air Purifiers
  • UV Air Purifiers
  • Humidifiers
  • Dehumidifiers
  • HVAC Design Services
  • Oil to Gas Conversions heat systems
  • Hydro-Air Systems
  • Baseboard Hot Water Heat

Design & Installation

J.P. Dunn Heating & Cooling LLC can provide HVAC design, installation, and retrofit services for your residential or light commercial building projects throughout Connecticut. No matter your HVAC application, be it a ductless splits design, a wall hung on-demand boiler or a hot water heater, we can assist you in providing the best air conditioning and heating system using top quality products to ensure the most efficient and effective heating, cooling, and indoor air quality.

Our experienced and trained technicians can design and install your heating or cooling system and stay with you from design, to installation, to service. J.P. Dunn is the Litchfield County, Torrington and the Northwest Connecticut HVAC contractor you should call for furnaces, boilers, air conditioning heat pumps and hot water heaters.

We offer design and installation services for:

  • Cooling systems
  • Heating systems
  • Ductwork & Custom Ducts
  • Exhaust systems
  • Ventilation systems
  • Air Purifier systems
  • Humidity control systems
  • Baseboard hot water heat systems
  • Water Tanks
  • Oil Tanks
  • Gas Lines
  • And related mechanical systems

We Only Sell Top Quality Products

We offer a complete line of the best HVAC products. Whether you need new products focused on heating, air conditioning or indoor air purification, or need furnace repair or air conditioning repair services, you can have confidence that J.P. Dunn Heating & Cooling LLC will deliver high quality and complete satisfaction. We offer Boilers, Furnaces, Heat Pumps, Hot Water Tanks, Humidifiers, Radiant Systems, Air Purifiers, UV Purifiers, Hydro-Air Systems, Air Filtration Systems, Baseboard Hot Water Heating from the top manufacturers like Heil, Rheem, Ruud, Williamson, Regal, Thermo Pride, Peerless, Weil-McLain, Buderus, Viessman, Navien, Everhot, State and Fujitsu.

Our Service Area

We cover Litchfield County, parts of New Haven & Hartford Counties and all of these towns:

  • Bantam
  • Bethlehem
  • Bristol
  • Burlington
  • Cheshire
  • Goshen
  • Harwinton
  • Litchfield
  • Middlebury
  • Morris
  • Naugatuck
  • New Hartford
  • Northfield
  • Oakville
  • Plymouth
  • Prospect
  • Southington
  • Southbury
  • Terryville
  • Thomaston
  • Torrington
  • Washington
  • Watertown
  • Waterbury
  • Winsted
  • Wolcott
  • Woodbury
  • and more...

Our location

Contact Us

J.P. Dunn Heating and Cooling LLC

701 Northfield Rd.
Northfield, CT 06778
Tel: 860-283-1167

24 Hour Emergency Service - 860-601-6080

Hours of Operation
Mon - Fri 7:30-4:00

Office Hours
Mon - Fri 7:30 - 5:00
Sat - 8:00 - 1:00

Fully Licensed:

  • License # HTG. 0388506 - S1
  • License # SHM. 005747 - SM1


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