55 reviews


Great work on my system

Great Service at a Great Price

They came at the appointed time and were courteous, efficient and professional in every respect. We could not have been more pleased.

Carl F. Riedell & Son

Thank You We appreciate the business.

Satisfied Customer

During 2018, I started using Carl F. Riedell & Son for my residential HVAC needs. My experiences, to date,have been extremely positive. Response times, professionalism of technicians and ability to satisfy my requirements have been excellent!

Terrrific - A Benchmark Business

Always reliable, trustworthy, and professional. Relied on them for years. A benchmark business. Thanks

Incredible Technicians

Reidell Aeroseal sent two technicians, Tristan and Isaiah, to my 1880 house yesterday to clean the HVAC ducts and seal them with Aeroseal. Time will tell as far as the effects of the Aerosol, but Tristan and Isaiah were so polite and fun and professional and hardworking, I feel compelled to give them due credit publicly and to let Reidell know they made excellent choices in hiring these two. This was not an easy job in that it involved not only a crawlspace but also me building a walkway which was right in their path of working. They never complained and even continuously assured me that it was not a problem for them (even if it was!). These two alone would have me call Reidell in the future if a need were to arise.


Reidell crew, Justin & Nathan, just installed a mitsubishi mini-split system for us. They arrived on time and went straight to work, diligent and efficient. Justin took care to keep us informed about what they were doing, and was meticulous in respecting our home. They instilled confidence in the work and the product.


Always responsive and knowledgeable,easy to work with!

Cape House

We use Riedell because it’s one phone call and that’s it.

Carl F. Riedell & Son

Thanks for the review! Glad we could make it simple and easy.

Great Winter Turn Off Service

We can always count on Carl Riedell's techs, especially Terry, to take care of our home and cottage when we leave for the winter.

Heating/air conditioning project

In 2016 we bought an old (1840) house in Nantucket. The heat was circulating hot water with enormous old cast iron radiators which had some leakage. Air conditioning was in the form of window units. We decided that the heating/air conditioning should be upgraded. We contacted Guy (who by the way was a friend of a friend of mine on the Cape) to evaluate the situation and come up with a solution including a detailed recommendation. Guy came and after investigating the situation presented us with a plan including an estimate for the work to be done. We agreed to the plan and Guy’s associates put the plan into effect. The workmanship was outstanding in every aspect. The workers were knowledgeable and pleasant to deal with. As could be expected with an old house there were of course a few cliches which were addressed in a timely fashion. We are most pleased with the heating/air conditioning work done by Guy’s firm and would gladly recommend them to anyone needing the type of work we had done or any plumbing, heating or air conditioning project. We would be happy to be used as references.

Carl F. Riedell & Son

We're proud of our workmanship and competency in detailed projects like this. Thank you for the wonderful review!

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4.9 out of 5
based on 55 Reviews
Air Conditioning Contractors of America Member

Air Conditioning Contractors of America Member

National Federation of Independent Business

National Federation of Independent Business

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C.R. Headquarters Carl F. Riedell & Son

  • 778 Main Street Osterville, MA 02655
  • Open Monday-Friday: 7:30am - 4pm - Closed on Weekends
  • (508) 261-5207