The Commonwealth of Massachusetts has issued a “stay at home” order. Starting Wednesday March 25, 2020 we will be forced to shut down and cancel all appointments for the next two weeks. We will be monitoring the office and our phones for emergencies. Once the “stay at home” has ended and we are back to work we will reschedule all appointments. If this is a true emergency please call our office at (508) 261-5207. Thank you for understanding during this difficult time.

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

Nantucket Carl F. Riedell & Son


  • 9 Teasdale Circle Nantucket, MA 02554
  • Open Monday-Friday: 7:30am - 4pm - Closed on Weekends
  • (508) 261-5207

Why Choose Us?

We Offer Professional Services for Your Cape Cod Home or Business. Keep your systems running smoothly with expert installation and repairs from Riedell!

Professional Installation

Our certified crews stay up-to-date on the latest technologies to provide the best possible services to our customers.

Affordable Prices

Our family-owned business has offered fair pricing since we opened in 1932, and we still do!

100% Customer Satisfaction

Our customers are our first priority, and we do whatever it takes to ensure your satisfaction.

Impressive Warranties

In addition to the manufacturer warranties on parts, Riedell provides generous service warranties.