Northern Duct Seal, serving Oelwein, IA, since 2014, specializes in Aeroseal residential and commercial duct sealing. Led by a certified team, the company improves comfort, energy efficiency, and indoor air quality while reducing utility costs. They provide professional, reliable duct sealing and IAQ services tailored to each property, balancing airflow, sealing leaks, and preventing dust and allergens. As a local, community-focused company, they deliver lasting results with friendly, customer-first service. Customers are highly satisfied with Northern Duct Seal's vent cleaning service, reporting cleaner homes, improved air quality, and prompt, efficient, and thorough work. They are praised for their courteous technicians, convenient scheduling, and the exceptional quality of their service, which includes filter changes, debris cleanup, and deep cleaning of ducts and vents. Customers recommend Northern Duct Seal as their go-to provider for duct and vent maintenance.
Wonderful 1 day fix to a many years problem! Great team to work with.
November 2024
Really pleased with the vent cleaning service! My house seems cleaner, and the air quality is significantly improved. The technician was prompt, efficient, and cleaned up afterwards. I will absolutely use them again!
November 2024
Very satisfied. Made appointment for time convenient for me, good communication, was prompt and thorough. Happy to have vent cleaned to eliminate fire danger and improve performance of my dryer.
Northern Duct Seal seals duct work from the inside by use of computerized tools and equipment. The process takes one day and our technicians will provide pre-seal and post-seal duct leakage reports on the spot. The basic steps to do a duct seal are: 1) Pre-seal Test is done to measure duct leakage, 2) Registers, returns, and air handler coil are blocked off with foam plugs, 3) A UL-tested and approved aerosol is injected into the pressurized duct system, 4) A Post-Seal Test is performed to measure improvements and 5) A complete Report and Certificate are printed to provide the customer with a record of improvement. Duct sealing provides a solution to high energy bills, air flow/air balance issues, uneven temperatures, hot and cold rooms, excessive humidity, musty odors and fume smells from stored paints, solvents, pesticides, and radon gases. Northern Duct Seal will reduce duct leakage by up to 90%, saving customers an average of $600 - $850 a year, with a 2-3 year return investment, depending on variables such as weather, system usage, energy prices, and home design. Northern Duct Seal offers a 10- year warranty on the seals created by our technicians. The sealant itself has been UL tested and approved and is considered non toxic by OSHA. For a demonstration video of the duct sealing process please see the 'Ask This Old House' Video located under the Media tab on this page.
