We are a dependable, friendly face 24/7, keeping your family safe and comfortable with quality heating and air conditioning equipment, repair, and maintenance. National Refrigeration was started in 1969 by Jack King, Sr. and is still family-owned today. We are a full-service HVAC and plumbing mechanical contractor that services commercial as well as residential properties in Rhode Island. Our staff and service team can support design-build HVAC services-from permitting to inspection-for light commercial applications, large facilities, and multi-unit housing.

National Refrigeration is a family-owned, full-service HVAC and plumbing mechanical contractor headquartered in Warwick, Rhode Island. Our experienced, factory-trained, licensed, and fully bonded HVAC and plumbing technicians provide installation, maintenance, and repair services for small- and large-scale commercial facilities, residential homes and multi-family housing. Once upon a time, when you called for a heating and cooling or plumbing job, one man showed up-Jack King, Sr.-and he got the job done.

Harsh Rhode Island winters can be the cause of expensive energy bills if you don't have the best heating equipment for your home. Our factory-trained technicians determine the right size furnace or boiler for your home, assess your current heating system, and help you make informed decisions about repairs, upgrades and replacement, including Indoor Air Quality solutions. National Refrigeration offers the lowest prices on top-rated heating equipment and parts through our exclusive relationships with leading HVAC brands.

Whether you need troubleshooting, repair of HVAC problems, installation of humidifiers or air cleaners, zoning systems, or energy saving solutions, we are committed to you.

National Refrigeration is the full-service commercial HVAC and plumbing contractor with which most Rhode Island business owners prefer to do business. Our company culture rewards superior quality work and customer service, continuing education, and pride in a job well done. Our experienced commercial HVAC and plumbing teams provide design assist, constructability evaluations, equipment and material selection, controls, and system performance parameters. Once upon a time, when you did business with National Refrigeration, you shook hands with one man-Jack King, Sr.-and he got the job done.

Water and natural gas needs to be handled by professional plumbing technicians who are trained, licensed, fully bonded and insured to protect your property and family. National Refrigeration has a team of skilled and knowledgeable plumbers to assist you right away. Our factory-trained plumbing technicians will determine the best strategies for plumbing your home; assess your current fresh water, waste water, and natural gas systems; and help you make informed decisions about repairs, upgrades, and replacement.

Preserve the quality of the air your family breathes by cleaning it from outdoor allergens, pet dander, dust mites, and mold, as well as microscopic bacteria, viruses, and similar illness-causing pathogens. Our air quality technicians can determine the best strategies for improving the indoor air in your home and help you make an informed decision about upgrades and replacement. National Refrigeration offers the lowest prices on top-rated indoor air quality equipment and parts through exclusive deals with leading HVAC brands.

What's new?

Spring will be here before we know. Learn more about keeping spring allergies under control by minimizing the amoun… https://t.co/15n7zbRQBF

Posted on Mar 01, 2021  •  Twitter

Jack built National Refrigeration on the foundation of personalized service. Half a century later, and we continue… https://t.co/JXJZcsmMyv

Posted on Feb 05, 2021  •  Twitter

Thank you, Joe! #HVAC #HVAClife #BestCustomers #NHVAC #NationalRefrigeration #reviews https://t.co/YLN8sd0s9l

Posted on Jan 08, 2021  •  Twitter

Reminder to make sure your carbon monoxide detectors are up-to-date and functioning properly! #staysafe https://t.co/CEb7KBhUUZ

Posted on Dec 15, 2020  •  Twitter

How is your #IndoorAirQuality? https://t.co/VSCrUJsvn6

Posted on Dec 15, 2020  •  Twitter

I resemble this. https://t.co/EQtsSMNAXr

Posted on Dec 08, 2020  •  Twitter

In 1942, the @CarrierAtHome centrifugal chiller, the innovation famous for introducing the general public to air co… https://t.co/DwoBsYuUqF

Posted on Nov 17, 2020  •  Twitter

Here's a friendly reminder to change your filter! @CarrierAtHome https://t.co/Ld2nNu7B7O

Posted on Nov 17, 2020  •  Twitter

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